On May 8-11, the 21st China International Foundry Expo will be held in Tianjin - National Convention and Exhibition Center. (hereinafter referred to as "SANDI"), a new generation 3D printing equipment and rapid manufacturing service provider, will bring 3D printing green rapid casting solutions to the exhibition.

General Secretary Xi Jinping in the 14th National People's Congress emphasized the need to "promote the high-end, intelligent and green development of manufacturing industry". 2023 April, the Ministry of Industry and Information Technology and other three national ministries and commissions jointly issued the "Guidance on Promoting the High-quality Development of the Casting and Forging Industry" (MIIT Lian Tongzhuang [2023] No. 40) in the It is clearly pointed out that by 2025, no mold casting, sand 3D printing, lightweight and high strength alloy lightweight and other advanced process technologies to achieve industrialization and application. The development of the foundry industry will usher in the structural optimization of the accelerated adjustment period, promote the foundry industry to green, high-end, intelligent transformation and upgrading, has become an important engine to enhance the international competitiveness of the foundry industry, to achieve comprehensive and sustainable development.
SANDI Technology specializes in 3D printing green additive manufacturing equipment and services, has a wealth of experience in 3D printing services and casting experience, based on "process design, 3D printing, casting, machining and testing" and other integrated technology processes, can provide high-quality R & D trial production, small batch multi-species, complex structure of the metal products of the rapid manufacturing services. Manufacturing services. Through its Longyuan molding independent research and development of 3DP inkjet sand molding, SLS selective laser sintering 3D printing equipment, formed 3DP sand casting, SLS sand casting, SLS wax mold precision casting and a full set of process solutions. We can provide rapid manufacturing services for aluminum alloy, copper alloy, cast iron, cast steel, magnesium alloy, high-temperature alloy, titanium alloy, etc. for the users of aerospace, automobile, rail transportation, ship pump valve, engineering machinery, education and scientific research, and art casting industries.

Concurrent Live Events

Live Streaming Topics
Practice of 3DP sand printing technology in green casting application

broadcast time
 May 8, 2023, 14:00 - 15:30

Live Streaming Instructor
 Dr. Zhao Hao, Vice President of Product Technology of SANDY Technology
Mr. Tan Dawei, Director of Green Fast Casting and General Manager of Xinxin Casting, SANDI Technology

Offline Live Streaming Locations
National Convention and Exhibition Center (Tianjin)
Hall S13, Booth D07 SANDI TECHNOLOGY

Online Live Streaming Room

scan the code to watch

Live Streaming Cooperation
Polar Bear 3D Printing

Main content of the live broadcast

This live broadcast will share the successful application cases of 3DP sand printing technology in the green fast casting demonstration plant, and discuss how traditional foundry enterprises can seize the industrial development opportunities through scientific and technological empowerment under the new development pattern, seek progress amidst changes, and realize transformation and upgrading.

On April 1, the 41st China International Rehabilitation Aids Industry and International Well-being Machine Expo hosted by China Association of Rehabilitation Aids opened at Zhumadian International Convention and Exhibition Center in Henan Province. The Expo attracted hundreds of famous enterprises at home and abroad, and tens of thousands of professional visitors.

Ltd., a subsidiary of Beijing SANDI Technology Co., Ltd, brought its self-developed 3D printed titanium alloy in-the-ear hearing aids and other technological recreational products to the exhibition.

According to the World Hearing Report 2021 released by the World Health Organization, there are about 1.5 billion people around the world who are suffering from hearing impairment. According to statistics, there are 72 million hearing impaired people in China, including about 60 million elderly people, but the market coverage of hearing aids is less than 5%. At present, most of the domestic mid- to high-end hearing aid market is monopolized by imported brands, accounting for about 90% of the market share; and most of the local hearing aid companies are difficult to meet the market demand for miniaturized, personalized and intelligent hearing aid products. In addition, most of the hearing aid products in the market are made of UV-cured materials (polymers containing vinyl), which provides a relatively single option and low wearing comfort, while hearing aid products equipped with customized metal shells (e.g., titanium alloy) with better performance have been monopolized by foreign brands for the time being, and the prices are high.

In order to break the monopoly of imported brands, Global Assistive Devices, relying on its parent company's years of experience in 3D printing services, has independently developed the Taiyin-3D Printed Titanium In-the-Ear Hearing Aid, which can provide a full range of customized hearing aid products for hearing impaired people, enabling them to enjoy the high-end exclusive hearing experience that is clearer, more comfortable, more invisible, and safer.
TAIYIN-3D printed titanium alloy hearing aids adopt the technical process of "3D scanning + 3D modeling + 3D printing", and the titanium alloy shell made by the company's self-developed metal 3D printer is customized to fit the ear, with an ultimate wall thickness of 0.15mm, which is more invisible and comfortable to wear; the medical-grade titanium alloy material is safe and non-toxic, non-allergenic, non-skin irritating, and 15 times tougher than the traditional resin material, which is more true to sound; 12K ultra-wide frequency range, 16-20 channels of effective adjustment, 48-64 frequency band precision. Non-allergenic, non-skin irritating, and 15 times stronger than the traditional resin material, sound more fidelity; 12K ultra-wide frequency range, 16-20 channels of effective adjustment, 48-64 frequency band precision modulation, the third generation of feedback suppression technology, can achieve 360-degree full-area listening experience; in many cities in the country to provide professional fitting, customization services and perfect after-sales service.

At present, Taiyin-3D printing titanium alloy in-the-ear hearing aid has obtained two national invention patents, has passed the national calibration verification, and the tested product performance has reached the international advanced level. The successful development of this product not only leads the application of 3D printing technology in the domestic hearing aid field to the same level in the world, but also greatly accelerates the development of 3D printing technology in the field of rehabilitation medicine.

As a technological rehabilitation products and services provider, Global Assistive Devices has been plowing into the rehabilitation medical industry for many years, and was wholly acquired by 3D printing leader SANDY Technology in 2013, and began to comprehensively layout the application of 3D printing in rehabilitation medicine. Relying on the parent company's research institute, postdoctoral workstation, engineering and technology team "trinity" of collaborative innovation system, dedicated to "3D printing + rehabilitation health care" R & D and application, the business covers more than one hundred categories of 3D printing hearing aids, orthopedic devices, prosthetic limbs and accessories. The business covers more than 100 categories of 3D printed hearing aids, orthopedic devices, prosthetics and accessories. At present, the company has obtained more than one hundred Class I and Class II rehabilitation medical products for the record, dozens of patents and copyrights, and passed the certification of ISO9001 quality management system and ISO13485 medical device quality management system. The company has led and participated in the formulation of many national and industrial standards for rehabilitation medical care. Our products and services have achieved full coverage of sunshine procurement and centralized purchasing platforms in more than ten provinces across the country. We have also established good cooperative relationships with hospitals, medical institutions, rehabilitation centers, federations of the disabled and other units in many cities in China.

In response to the growing market demand for personalized, intelligent rehabilitation and medical products, Universal Assistive Devices will continue to optimize and improve the product service system, and continue to research and develop more high-tech new products and applications using 3D printing technology and new materials, so that more patients can get personalized and accurate medical services, and promote the development of intelligent rehabilitation and health care for all.

This year's ConExpo will last until April 3, welcome to visit!CT13Global Auxiliary Booth Exchange!

Recently, the project of "Personalized Food Additive Manufacturing and Intelligent Processing Equipment Development" (hereinafter referred to as "the project") led by Beijing Longyuan Automatic Molding System Co. (hereinafter referred to as "the project") was successfully approved by the National Key Research and Development Program "Food Nutrition and Safety Key Technology Research and Development" key special support.

As additive manufacturing technology continues to evolve, the global demand for food additive manufacturing is also on the rise. Statistics show that the global food additive manufacturing market generated revenue of $226.2 million in 2021 and is expected to reach $1,941 million by 2027.

Food additive manufacturing technology has a unique "customization" attribute, not only can achieve the appearance of personalized design molding, but also for special populations to print special purpose and accurate nutritional food, is the main solution to the future of personalized food intelligent manufacturing. However, the current stage of food additive manufacturing technology exists in the processing equipment intelligence, high efficiency, lack of precision and standardization, continuity, automation level is not enough and other issues, seriously restricting the healthy development of the industry.

In order to break the bottleneck of the above problems, Longyuan will join hands with the Institute of Agricultural Products Processing of the Chinese Academy of Agricultural Sciences, give full play to their respective advantages in scientific research, technology, talents and market, and carry out the research on the adaptability of technology and equipment and the integration of equipment based on the independently researched and developed binder jet printing equipment and FDM equipment of Longyuan, develop easy-to-swallow food products made from food hydrogel and special shaped food products made from food-based particles, and evaluate the safety and reliability of such products. Food hydrogel as raw material and food-based particles as raw material for special shaped food, and its safety, reliability and other comprehensive evaluation, and ultimately achieve personalized food additive manufacturing and intelligent processing equipment industrialization demonstration and application, to meet the market's growing demand for diversified, personalized, accurate diet.

The research results of this project will provide technical basis and substrate, equipment, production line support for personalized food additive manufacturing, enrich and develop the basic theory of food additive manufacturing, which has important scientific value; enhance the level of China's food additive manufacturing industry and the scale of the industry, increase employment opportunities, and promote the long-term development of the industry, which has significant social benefits; innovate the existing traditional food additive manufacturing printing raw material preparation process It is also important to innovate the existing traditional food additive manufacturing printing raw material preparation process, and its products are directly used in the market, which significantly improves the economic benefits; enhance the level of industrial standardization and scaling, promote the efficient production of enterprises, reduce the waste of resources and energy, and realize the ecological benefits.

The implementation of this project will accelerate the deep integration of the new generation of information technology, biotechnology, new material technology and manufacturing technology with the food manufacturing industry, enhance the level of domestic automation equipment in the food manufacturing industry, and accumulate energy for the realization of the cause of people's life and health, and the promotion of the strategy of manufacturing a strong country.

[About Ryuen Molding
Beijing Longyuan Automatic Forming System Co.(Longyuan AFS Co., Ltd.(hereinafter referred to as "Lonyuan Molding") is a subsidiary of Beijing 3D Printing Technology, Inc.
Longyuan Molding focuses on 3D printing equipment and rapid manufacturing services, the company has nearly 30 years of experience in 3D printing services and casting experience. Through the self-developed SLS selective laser sintering, SLM selective laser melting, 3DP sand printing, BJ metal printing, DED directional energy deposition and other series of intelligent equipment, through the distribution of the country's manufacturing centers to provide users with sand printing rapid casting, wax printing precision casting, finished parts of the rapid prototyping, gradient metal 3D printing and other rapid manufacturing services. More than 1,000 equipment and processing service users are located in the fields of aerospace, automobile, motorcycle, rail transportation, ship pump valve, machinery manufacturing, art casting, metal processing and so on.

December 14, sponsored by the Mechanical Industry Education Development Center, the mechanical industry digital design and additive manufacturing vocational education group, powder metallurgy industry technology innovation strategy alliance 3D printing special committee, Anhui Mechanical and Electrical Vocational and Technical College, Beijing SANDI Technology Co, Ltd, Wugong County Xin Xin non-ferrous metal casting Co., Ltd. hosted by the additive manufacturing field of the benchmark enterprise visit senior training class online conference was successfully held. Attracted thousands of people online learning seminar.
With the theme of "Application of Additive Technology Leads Industrial Transformation and Upgrading, Integration and Development of Industry and Education Promotes Talent Cultivation Innovation", the conference invited Mr. Huang Xiaodong, Director of the Department of Industry and Education Cooperation and the Department of Development and Research of the Center for Development of Mechanical Industry Education, Mr. Yin Shaoqui, Researcher of Shenyang Foundry Research Institute of China General Machinery Manufacturing Institute, Mr. Wei Xiaorong, Deputy General Manager of Baoji Innovation Center and Vice General Manager of Baoji Hi-tech Smart Manufacturing Technology Co. Baoji Innovation Center, Wei Xiaorong, Vice President of Baoji High-tech Intelligent Manufacturing Technology Co., Ltd, Professor Chen Lihua from Changzhou Institute of Mechanical and Electrical Vocational Technology, Dr. Zhao Hao, Expert Member of 3D Printing Special Committee of Powder Metallurgy Alliance, Vice President of Product Technology of Beijing SANDY Science and Technology Co. The meeting was hosted by Li Changqing, Executive Vice General Manager of Beijing SANDY Technology Co.

Huang Xiaodong made a report entitled "Mechanical Industry Vocational Education Composite Talent Cultivation Points of Thought", from the "Composite Technical Skills Talent Policy Lineage" and "Composite Talent Cultivation in Equipment Manufacturing" two aspects of analysis and elaboration. And put forward, the enterprise is in urgent need of both familiar with the actual manufacturing process and understand the corresponding technical theory, both hands-on ability and management innovation ability of composite talents. Composite talents and innovative talents are more and more favored, and it has become an urgent task for the development of modern vocational education. In the new stage of high-quality development, equipment manufacturing composite talents training as a systematic project, the need for government, industry, academia, research and use of synergistic efforts, vocational education related to the construction of new professions, traditional professional upgrading and transformation of the need to classify the policy.

Dr. Zhao Hao, in the report titled "Development and Prospect of Industrial Application of Additive Manufacturing Technology", deeply analyzed the development process of additive manufacturing from the 1.0 era of point scanning to the 2.0 era of line scanning in terms of technology, industry, application, etc. In particular, the 3DP sand casting composite process and the BJM metal binder jetting + sintering process, as the 2.0 technology of additive manufacturing, have great cost and efficiency advantages in the stage of scaled-up application. cost and efficiency advantages in the stage of large-scale application. As a new generation of 3D printing equipment and additive manufacturing service provider, through nearly 30 years of 3D printing service experience and casting experience, SANDI can provide comprehensive, advanced and reliable industrial resources and service support for additive manufacturing vocational education, and jointly promote the industrialization of additive manufacturing and large-scale development.

Director Yin Shaoqui shared the "innovative application of additive manufacturing technology in high-end casting field", which introduced in detail the application of additive manufacturing technology in the national heavy equipment, and the technological innovation of Shenyang Foundry Research Institute in the preparation of materials and molding process. Its self-developed 3D printing materials, related technology and process has reached the international advanced level, and successfully applied in 3D printing fast casting, in aerospace, new energy vehicles, energy equipment and other fields of complex castings preparation has obvious advantages.

Wei Xiaorong, deputy general manager, brought the sharing of "3D printing green rapid intelligent manufacturing to promote the transformation and upgrading of traditional casting industry". Through the traditional single piece, small batch casting blank production process and 3D printing casting process flow of the

Comparative analysis, elaborated the advantages of 3D printing application in the foundry industry. And with the typical case of Xinxin Casting under SanDi Technology, he showed in detail how the traditional casting factory was transformed by 3D printing intelligence, established a green, flexible, high-end casting capacity, and became a local fast casting demonstration enterprise. Finally, he proposed that the school-enterprise cooperation model based on talent demand and supply of teacher training, curriculum system construction, providing technical and product services for the industry, and joint scientific research to develop industry-applicable materials and processes, etc., can be used to cope with the current changes in the demand for talents in the process of promoting technological upgrading of the foundry industry by 3D printing technology.

Prof. Chen Lihua made a report on Talent Cultivation Reform in the New Situation. She pointed out that with the continuous innovation of additive manufacturing technology and application, from additive manufacturing 1.0 characterized by prototyping to additive manufacturing 2.0 nowadays with industrial scale application as the core, it has become imperative to cultivate high-quality technical and skillful talents capable of engaging in additive manufacturing 2.0 application. In professional construction, it is necessary to adapt to industrial transformation and upgrading and high-quality development of the economy, and continuously develop and improve the curriculum standards in accordance with the requirements of the ability of the occupational positions (groups) and the relevant occupational standards. It is necessary to break the original framework of the professional curriculum system and reconstruct it based on the occupational work process.

Finally, Wang Lei, on behalf of the company, released the "trinity" innovation action plan of SANDI Technology, which is based on the three dimensions of industry, academia and research, respectively, from the integration of industry and education and collaborative manufacturing, teacher qualification level enhancement, internship training, teaching resources development, transformation of scientific research results, and technological application of scientific research alliance and how to better support the development of vocational education, elaborated and discussed. SANDI Technology has elaborated and discussed how to better support the development of vocational education in the three dimensions of industry-teaching integration and collaborative manufacturing, teacher level enhancement, internship training, teaching resources development, transformation of scientific research results, and technology application research alliance. He also said that SANDI hopes to promote the integration of industry and education under the guidance of the Center for Mechanical Industry Education and Development and the Vocational Education Group of Digital Design and Additive Manufacturing in the Mechanical Industry, and with the 3D Printing Industrial College of SANDI as an opportunity to promote the integration of industry and education.

3D printing technology has been developed for more than thirty years, and its industrialization application global compound annual growth rate in 20% above, China even higher, but due to its relatively small output value base, 3D printing industry, despite its significance, so far it is still a small industry. 3D printing industrialization is slow mainly due to two reasons: one is the low efficiency of the printing, that is, the manufacturing speed is slow; the second is that the printing material is expensive, that is, the Manufacturing cost is high. A slow and expensive technology is difficult to be applied to the production line, which is why most of the main users of 3D printing equipment are research institutes, R&D departments of large companies, schools and 3D printing service organizations.

In order to solve the problem of traditional 3D printing is both slow and expensive, 3D printing 2.0 Binder Jetting (Binder Jetting/3DP, hereinafter referred to as BJ) process has emerged. Compared to 3D printing 1.0, such as PBF, DED and other metal additive manufacturing process is the use of "point scanning" technology, the existence of processing efficiency is low, the cost is several times that of the traditional manufacturing technology, it is difficult to realize the large-scale industrialization of the application of the "line scanning" technology, the 3D printing 2.0 Binder Jetting (BJ) process has emerged. 3D printing 2.0 binder jetting BJ process using "line scanning" technology is a high-efficiency, high-precision additive manufacturing technology, which follows the traditional powder metallurgy industry's material system and sintering process, low cost, high degree of standardization of materials, can provide high-efficiency, high-quality, low-cost metal additive manufacturing solutions for the industrial session can be applied to the production line, for the large-scale application of 3D printing technology to lay a solid foundation. solid foundation. It is expected that 3D printing 2.0 will bring breakthrough and continuous growth for the 3D printing industry.

Internationally, Desktop Metal, HP, Digital Metal, GE and other global technology companies are optimistic about the market potential of BJ metal technology, in the past five years have completed the development of BJ metal technology, and achieved a certain degree of industrialization applications. As a large manufacturing country, China's market demand for BJ metal technology is even more urgent, especially from the MIM (Metal Injection Molding) industry for rapid prototyping and small and medium-sized mass production. Against this background, domestic BJ metal technology has developed rapidly in recent years. In fact, as early as 1994, Dr. Zong Guisheng, the founder of Beijing Longyuan Automatic Forming System Co., Ltd (a subsidiary of SANDI Technology, hereinafter referred to as "Longyuan Forming"), put forward the concept of "line scanning" and declared "Since 2018, through the technological innovation of the postdoctoral team at the postdoctoral workstation and the engineering innovation of the R&D team, Longyuan has successfully developed and produced a series of BJ equipment and 5 series of adhesives applicable to more than 20 materials. of 5 series of bonding agents, and put them on the market.

Based on the synergistic innovation system of the company's Guoqian Science and Technology Research Institute, post-doctoral workstation and product development team, and the foundation of nearly 30 years of development of additive manufacturing equipment, Longyuan Molding has independently mastered a number of key technologies related to the equipment, materials and processes of the binder injection molding technology, and has completed the development of R&D R-series and production P-series series of equipments and the development of systematic material processes, such as iron-based materials, non-ferrous metals, high temperature alloys, refractory metals, ceramic materials, inorganic salts, polymer materials and food materials. Alloys, refractory metals, ceramic materials, inorganic salts, polymer materials, food materials and other systematic material technology development.

Longyuan Molding R series equipment AFS-J120R and AFS-J380R are R&D type equipment for universities, research institutes, enterprise R&D organizations and so on. This series of equipment can realize the highest ±0.2mm printing accuracy, 400~800DPI resolution, 2.5L/h printing speed and 55~62% green blank density. The equipment is easy and quick to operate, with flexible replacement of powder material and binder ink, concise structure, easy maintenance, and effective guarantee of scientific research efficiency and experimental reproducibility. Adopting self-developed industrial control software and data processing software, the process parameters are highly open and independently adjustable, which is not only compatible with a wide range of materials, but also more suitable for exploratory research and rapid preparation of new materials iteration.

P series equipment is production-oriented equipment for MIM, mold, tooling and other industries. This series of equipment adopts the latest top-feeding single-cylinder structure, equipped with V+ precise powder drop system, double-roller composite high-density powder spreading system, automatic nozzle cleaning, built-in air purification system and other devices, easy and quick to operate, flexible replacement of powder materials and binder ink, and effective protection of production efficiency. It can realize printing accuracy of ±0.15mm, resolution of 400~1200DPI (freely adjustable), printing speed of up to 2.5L/h and green blank density of 55~62%. High-end production equipment AFS-J380L is also equipped with a high-precision molding cylinder transfer vehicle, molding cylinder can be quickly transferred and quickly replaced, saving curing waiting time; the highest printing accuracy of up to ± 0.1mm, the highest printing speed of up to 3.6L / h, the relevant technical indicators up to the international advanced level.

In addition, Longyuan Forming has the ability to design binder formulations independently, which can meet the development needs of customers for customized binders for new materials and applications. On the basis of the equipment, it has successfully developed a series of BJ-specific binder formulations, which are applicable to more than 20 kinds of matrix materials, such as iron-based alloys, light metal alloys, organic glass, ceramics and so on. Among them, the degreasing and sintering process of SS316L, SS420, 18Ni300 and many other materials meet the international material standards of MIM industry. In addition, the company has set up professional technical service centers across the country, which can respond quickly to customer needs at all times and provide solid guarantee for the stable operation of the equipment.

BJ metal technology is known as "Additive 2.0" technology because of its high printing efficiency, low material cost, cost-effective equipment, no additional support, suitable for batch, etc. It will be used in automotive, hardware, electronics, tools, molds, cutting tools, medical equipment, sports equipment and other industries to form a large-scale industrial applications, with a vast market space. Has a broad market space, the future market size of more than 100 billion yuan. At the same time, as a direct metal molding technology, the development and application of BJ metal technology is also gradually growing into the core technology trends in the field of metal additive manufacturing, in the production of batch metal parts show a strong vitality. It is believed that, in the future, this technology will profoundly affect the traditional manufacturing industry, and will change the market pattern of the metal additive manufacturing industry.

The reporter learned from the domestic 3D printing leader Beijing SANDI Technology Co., Ltd: Recently SANDI Technology independently developed a new type of macrostructure suitable for on-site printing, the macrostructure has a strong absorption, flexible control of the performance of the wave absorption, which can meet the demand for wave absorption protection for both existing and new buildings. At present, the company has applied for a number of patents in the field of concrete 3D printing and cement-based wave-absorbing materials, and seven patents have been authorized.

The rapid development of modern technology and electronic industry for human production and life has brought convenience, but also make the human living environment by excessive electromagnetic wave radiation pollution. It is reported that the wave-absorbing material is the use of materials to electromagnetic wave absorption and reduce the electromagnetic wave energy density of a functional material, can reduce the radar scattering cross-section of the facility or equipment, can be widely used in military and civilian fields, in which the macro-structure of the material has a great influence on the effect of the material wave-absorbing. In order to improve the wave-absorbing properties of the material, the industry has tried a variety of methods, but either will reduce the mechanical properties of the material, or increase the cost of the material and the difficulty of production, or mold cost and wave-absorbing properties of the customized cost is high. Both mold-free production and material savings, the use of 3D printing to prepare cement-based wave-absorbing materials has become a development direction of the industry's attention. However, the 3D printing methods that have been reported can only be prefabricated due to the limitation of structural design, and cannot be directly printed and molded on site.

"The 3D printing-based cement-based wave-absorbing materials independently developed by SANDI Technology, with the help of the research and development of a structure called nested, using the characteristics of 3D printing moldless manufacturing, to solve the problem of previous cement-based macro-structural stealth materials needing molds to be prepared, with low strength and uneven wave-absorbing capacity." The relevant person in charge of SANDI Technology said that the optimized design of the wave-absorbing material, with a thickness of 40mm, has a reflectivity of less than -15dB (decibels) and an average reflectivity of less than -20dB in the frequency band of 1~18GHz, which is equivalent to an average absorption rate of electromagnetic energy of 99%, with a large frequency bandwidth and a balanced absorption capacity. "This macroscopic structure of the wave-absorbing material can be realized by the program control to change the print path so as to adjust the structural wall thickness, spacing, height of the structural layer and other parameters, can be adjusted according to the target band of wave-absorbing performance, without the need to prepare molds, to achieve wave-absorbing performance can be customized.

"Relevant data show that in 2019, the global market size of wave-absorbing materials is about 29.75 billion yuan, it is expected that in 2020-2025, the global market size of wave-absorbing materials will continue to expand at a growth rate of more than 8.0%, and the industry has a broad prospect for development. The person in charge said that cement-based wave-absorbing materials can be widely used in the field of environmental protection-type construction to prevent electromagnetic pollution, in order to mitigate the harm caused by electromagnetic radiation to human beings; used in the construction of buildings, bridges, towers, etc., to prevent radar artifacts; used to improve the quality of communications during the construction of communication bases, such as premises and parabolic antennas; used in the airports, wharves, navigational beacons, television stations and receiving stations near the tall buildings It can be used to eliminate reflection interference; used to make microwave darkroom, can prevent microwave radiation interference and energy leakage, not only can eliminate interference to improve the test accuracy, and also can play a protective role for the operator; in addition, it can be used in the field of military stealth building in combat, scientific research departments of anti-electromagnetic wave interference, precision instrument factories and national confidentiality units to prevent the leakage of information and other departments.

(Source: Economic Times)

On the morning of June 28, the special training on industrial intelligent manufacturing and innovation drive was held in Nanning, where experts from relevant industry societies and organizations in Guangxi spoke on the development trend of industrial intelligent manufacturing, the methods and pitfalls of intelligent upgrading of enterprises as well as the latest intelligent technologies. This special training was organized by Nanning Bureau of Industry and Information Technology and Nanning Federation of Trade Unions, and hosted by Nanning 3D Printing Public Service Platform and Nanning SanDi Technology Co. Dozens of enterprise representatives from machinery industry, automobile, processing manufacturing, equipment manufacturing and other industries attended the training.

"When it comes to industrial upgrading and transformation, not mentioning intelligent manufacturing seems to be failing to catch up with the trend." Liu Zhufeng, director of Guangxi Intelligent Manufacturing Promotion Center, mentioned that some enterprises hurriedly embarked on intelligent transformation without considering their actual needs, but ended up with poor results. A domestic listed company because of the detachment of the actual intelligent transformation, resulting in billions of dollars of losses in a year, and had to stop the relevant business. The intelligent factory of a foreign automobile manufacturer was a typical representative of Industry 4.0, which welcomed countless Chinese guests to visit, but it was eventually closed because the loss did not pay off, and the relevant models have been discontinued.

In the training, Mr. Liu Zhufeng shared the opportunities and challenges of the new era with the theme of "Enterprise Digital Construction in the Context of the New Era", and at the same time, combined with the relevant successful cases implemented in recent years, he elaborated on the key capabilities and paths for the transformation and upgrading of the enterprise's intelligent manufacturing. He reminded that the transformation and upgrading of small and medium-sized enterprises in Guangxi must be conducive to strengthening their core competitiveness, and that intelligent upgrading is not something that can be accomplished by buying a set of intelligent equipment and a set of automation software.

Similar to Liu Zhufeng's point of view, Zhu Jie, Honorary President of Guangxi Society of Industrial Engineers, also proposed that enterprises should not be superstitious about the so-called successful experience of large foreign enterprises. For example, the Toyota Production System, which is regarded as the standard by some industrial enterprises, is not as godly as described in some domestic books and articles, and the system is just the application of industrial engineering in Japanese enterprises.

By comparing the selling price and sales range of the two dairy companies, Zhu Jie explained the knowledge of delivery management, cost control and quality assurance of industrial engineering in the training. In his opinion, enterprises in Guangxi can take into account their own reality and utilize relevant management knowledge to rationalize the production management process of their factories. With as little investment as possible, they can improve their productivity and efficiency, reduce costs and enhance their competitiveness by improving workflow and operation methods and implementing advanced and reasonable work quotas.

For the current high-tech that has been put into commercial use, Gao Yan, general manager of Nanning SANDI Technology Co., Ltd. explained the development and application of 3D printing technology in China during the training. This additive manufacturing technology emerged in China from the 1990s and has been in commercial use for more than 30 years. From people's mouth, "what you think is what you get" magical future technology, has now been applied to industrial production and civil and other fields, from aerospace engines to automotive parts, from art sculpture to home creations ......3D printing is affecting the manufacturing industry's production methods and people's daily life. The future of 3D printing is affecting the way of manufacturing and people's daily life.

According to Gao Yan introduction, 3D printing sand casting process, for example, compared with the traditional casting process has many advantages, not only can save the cost of mold opening and time, but also significantly improve production efficiency, especially for complex structure, short cycle, high precision, small batch of high value-added products trial production. Automotive engine block, for example, using traditional methods of production takes more than 1 month, and through the 3DP sand printing fast casting process is only 10 days to deliver the finished product, the production cycle shortened by 2/3, the cost of reducing 30%. Currently in Guangxi, a number of automotive and parts enterprises to obtain a wide range of applications.

Mastering the latest technology may not necessarily lead to market gains. Guangxi Rock Technology Co., Ltd. deputy general manager Yang Sunpeng with his own experience, about the importance of industrial value economy. He once served a paper packaging enterprise in Liuzhou, obviously technically more advanced than the international first-class packaging equipment, selling price only half of the other side, but it is difficult to get orders.
At the same time in the narrative, Yang Sunpeng posted the packaging equipment enterprises and competitors of the product pictures, Liuzhou manufacturers of equipment parts bare, and competitors not only add the shell, but also designed a modern pattern, giving people a completely different feeling. After the appearance of the redesign, Liuzhou manufacturers of new products not only add the shell, but also set up the LED data screen and other easy to operate the transformation, the equipment immediately appeared to be high, the sales gradually open, the price of the product is also comparable to competitors, and even received a competitor's OEM order.

After the meeting, the training organizer also invited everyone to visit the production workshop of Nanning SANDI Technology Co., Ltd, so that everyone can witness a piece of product, printed out in the unmanned workshop, so that visitors called out the novelty.

On June 28, the online 3D printing industry college development forum and the depth of mechanical industry vocational education school-enterprise cooperation project promotion meeting was successfully held under the guidance of the Mechanical Industry Education Development Center, hosted by the Mechanical Industry Digital Design and Additive Manufacturing Vocational Education Group, and organized by the 3D Printing Specialized Committee of Powder Metallurgy Industry Technology Innovation Strategy Alliance, Anhui Institute of Mechanical and Electrical Vocational Technology, Chongqing Institute of Industrial Vocational and Technology, and Beijing Sundee Science and Technology Co. The promotion of cooperation projects was successfully held, attracting more than a thousand people to participate and discuss online.

The topic of "Cultivation of Mechanical Industry Education and Development Center" invited Chen Xiaoming, Director of Mechanical Industry Education and Development Center and Director of Education and Training Department of China Machinery Industry Federation, Prof. Xu Chunlin, Vice President of Anhui Institute of Mechanical and Electrical Vocational Technology and Member of Teaching Steering Committee of Mechanical Vocational Education, Pei Jianghong, President of Mechanical Engineering and Automation College of Chongqing Institute of Technology, and Dr. Zhao Hao, Expert Member of 3D Printing Expert Committee of Powder Metallurgy Industry Technology Innovation Strategy Alliance and Deputy General Manager of Research and Development of Beijing SANDY Science and Technology Co.

Director Chen Xiaoming made a report titled "Thinking about building a collaborative development ecology for additive manufacturing industry-university-research-creation", from the strategic height of high-quality development of industry-education synergy, he made an in-depth analysis and elaboration on the development of additive manufacturing technology and optimization of talent cultivation, and the construction of additive manufacturing industry-university-research-creation ecosystem. He puts forward that talent cultivation innovation for the development of additive manufacturing should clarify the main attack direction, focus on solving the outstanding problems of mismatch between talent supply and enterprise demand, low quality of talent cultivation, insufficient talent cultivation capacity and talent loss, optimize the relationship between industry-teaching synergy in the areas of urgency and shortage in the additive manufacturing, and establish a linkage mechanism between talent cultivation and job demand; do a good job of the top-level design, build the synergistic development of industry-academia-run-creation in additive manufacturing Do a good job of top-level design, build a new ecology of additive manufacturing industry-university-research and creation synergistic development, accelerate the improvement of vocational education additive manufacturing professional standard system, and effectively guide the training of talents.

Xu Chunlin made a theme report titled "additive manufacturing technology and skills personnel training system construction", on the industrial development of additive manufacturing, the current situation of the talent team and talent demand for research and analysis, on the current situation in China's colleges and universities, vocational schools within the set of additive manufacturing-related professions, the curriculum system, practical training conditions, school-enterprise cooperation and other situations are introduced in detail, and on the construction of additive manufacturing personnel training system puts forward the He also put forward suggestions and thoughts on the construction of talent training system for additive manufacturing. He pointed out that we should accelerate the vocational education undergraduate specialty setting in view of the characteristics of the additive manufacturing industry's demand for medium- and high-end talents, and build a chain of technical and skilled talents to comprehensively support the development of the industrial chain. Since its establishment, the Vocational Education Group of Digital Design and Additive Manufacturing in Machinery Industry has been actively promoting the deep integration of China's digital design and additive manufacturing industry and vocational education by organizing and carrying out industrial forums, hosting and participating in the development of technical applications and vocational skill level standards.

President Pei Jianghong made a keynote report on "Construction of Green Rapid Manufacturing Center", focusing on the development of "Chongqing 3D Printing Smart Manufacturing Center", an industry-education fusion project jointly carried out with SANDI Technology. According to reports, the center, through the introduction of SLS laser sintering equipment independently developed by SANDI Technology, provides full-process technology and product services in the field of investment casting of large and complex curved parts for the local aerospace, military equipment, automotive and other high-end equipment manufacturing industries, and obtains rich results in teaching, training and scientific research, realizing the construction of the college's professional level and the enhancement of the quality of talent cultivation, becoming A typical case of integrating scientific research, teaching and production in the industry-education integration program. Finally, President Pei put forward his vision on the future development direction of the center, he said that he hoped to create Chongqing Green Rapid Manufacturing Alliance by combining the development of local pillar industries in Chongqing, and to clarify the development idea of great integration of industry and education through the attempt of the integrated development and construction of middle and high school, and to create a characteristic mode of integration of industry and education.

Dr. Zhao Hao shared a report titled "Industrialized Metal Additive Manufacturing Technology and Application", respectively, gave a detailed and in-depth explanation on the progress and application of several mainline technologies of metal additive manufacturing, shared the mature industrialized application of 3DP/SLS metal parts rapid casting process independently developed by SANDY Technology in aerospace, automotive, industrial machinery and other fields, and analyzed and looked forward to the R&D progress and future development trend of BJ Binder Jet Metal He also analyzed and looked forward to the R&D progress and future development trend of BJ binder jet metal printing technology. He believes that the current metal additive manufacturing is gradually moving towards maturity, with the emergence of high-efficiency, low-cost, mass-production-type technology, the industrialization of the application space continues to broaden, the growth of the demand for talent training will create a broad opportunity for the integration of industry and education, SANDI looks forward to in-depth cooperation with more colleges and universities and scientific research institutes, and work together to promote the innovative development of new technologies and new applications.

At the meeting, Wang Lei, on behalf of the company, released the "trinity" innovation action plan of SANDI Technology, which is based on the three dimensions of industry, academia and research, respectively, from the integration of industry and education and collaborative manufacturing, teacher qualification level enhancement, internship training, teaching resources development, transformation of scientific research results, and technological application of scientific research alliance and other aspects of how to better support the development of vocational education, elaborated and discussed. SANDI Technology has elaborated and discussed how to better support the development of vocational education in the three dimensions of industry-teaching integration and collaborative manufacturing, teacher level enhancement, internship training, teaching resources development, transformation of scientific research results, and technology application research alliance. He also said that SANDI hopes that under the guidance of the Mechanical Industry Education Development Center and the Mechanical Industry Digital Design and Additive Manufacturing Vocational Education Group, SANDI 3D Printing Industry College will be an opportunity to promote the real implementation of the industry-teaching integration project.

China is a foundry country, casting production in 2021 reached 51.3 million tons, the industry scale ranks first in the world. China Foundry Association data statistics show that the existing 26,000 domestic foundries, including sand castings market size of about 120 billion yuan. However, in recent years, the development of the industry is facing difficulties, energy saving and emission reduction pressure, shortage of skilled workers, serious homogenization of competition and other issues come to the fore. In order to get out of the dilemma, enterprises have invested a lot of money in new product development and technological transformation, and with the slowdown in the growth rate of economic development, attenuation of the demographic dividend and rising comprehensive costs, the casting industry, the overall reduction in the value-added products, industrial transformation and upgrading of the pace of slowing down the urgent need to explore a new road of transformation and development. Traditional technology has been unable to change the situation, there is an urgent need for many foundry enterprises "innovation and empowerment" of the new technology - at a lower cost, predictable returns, build enterprise product technology from low-end to high-end conversion of the "Green Channel".

In this context, 3DP sand printing technology (also known as "binder jet sand 3D printing technology") into the people's field of vision, after years of development and maturity, has been very competitive. In this paper, we can see the domestic sand 3D printing equipment appeared in the production line of a private casting enterprise in Xianyang City, Shaanxi Province, for their casting products to give the "asymmetric competition" technical advantages, and successfully enter the high-end casting market.

Sand casting and forging, extrusion, welding, milling and other metal processing technology, compared with the most simple and efficient metal molding technology, so it is widely used. Traditional sand casting is mainly used in mold turning sand or core box way modeling, need to make wooden molds or metal molds, manufacturing molds is time-consuming, costly and risky, so that many foundry companies in the early stages of new product development is faced with the dilemma of choice - if the molds are opened and can not get the order, it will be a loss of mold fees for nothing. In this case, in addition to new product development, some small quantities of parts, complex parts of the demand is also difficult to meet. On the other hand, the mold sand itself has many process shortcomings, such as mold assembly and demolding for the assembly margin reserved for mold assembly and demolding tilt margin, resulting in sand casting products processing removal of a larger amount of high dimensional error, casting surface finish is poor and other issues. Therefore, the higher quality requirements of complex castings have to give up the sand casting process, and turn to other more costly alternative processes, such as pressure casting, precision casting, etc..

The emergence of 3DP sand printing technology can largely change the unfavorable situation that sand casting is in. The use of 3DP sand printing technology does not require molds, direct printing of sand, can be completed with the minimum time and minimum cost of new product development and delivery of small and medium volume products. After 3DP process validation, the casting process can be perfected, the contract was successfully signed, and then invested in opening molds for large-volume manufacturing, which can save a lot of investment in molds. In terms of quality, 3DP sand type is not subject to the constraints of the mold sand turning process, with 10 micron level of high precision, complex structure of one free molding, part of the cast aluminum casting surface accuracy can be comparable to the precision casting, but also reduces the assembly errors caused by the scrap rate, reducing the labor of workers, the overall economic benefits are very significant.

In recent years, driven by both technology and market demand, China's 3DP sand printing technology has developed rapidly. Beijing Longyuan Automatic Forming System Co., Ltd (a subsidiary of SANDI Technology, referred to as "Longyuan Forming"), a leading domestic 3D printing equipment and manufacturing service provider, has independently developed and launched AFS-J1600 and AFS-J2100 series of mass production equipment, which has realized a printing speed of less than 15s/layer and passed the 1000-hour equipment stability test, with good printing accuracy and intrinsic quality. The equipment has passed the 1000-hour stability test, has good printing accuracy and inherent quality, and is designed to meet the needs of aluminum, iron, magnesium, steel and other applications, with a wide range of abrasive systems and binder materials.

Ltd. introduced two sets of Longyuan Molding 3DP sand printers for sand production in 2021, which have now completely replaced the wooden mold sand turning process. It not only saves the cost and time of mold opening, but also avoids the risk caused by unreasonable mold design and mold repair. The production efficiency has been greatly improved, especially for the trial production of high value-added products with short cycle time, high precision and small batch, which can be delivered with high quality and high efficiency with greater ease, and has become a major competitive advantage.

Xinxin casting through Longyuan molding 3DP sand printer using sand rapid casting process for a car factory trial production of engine block, due to the complexity of the cylinder structure, and wall thickness is small, if the traditional method of production cycle takes more than 1 month. 3DP sand printing equipment produced by the sand, precision and strength than the traditional process have been greatly improved, the tensile strength of up to 2MPa, the surface roughness of the casting below Ra12.5, defects are well controlled, no succulent, porosity, cracks, slag entrapment, no surface defects and defects. It only took 10 days to deliver the finished castings of gray cast iron (HT250), the production cycle was shortened by 2/3, and the cost was reduced by 30%.

Xinxin Casting adopts sand rapid casting process through Longyuan molding 3DP sand printer to try to produce lightweight frame for a new energy vehicle enterprise, if the traditional method is used to produce, the production cycle will take 40 days. By using 3DP sand printing rapid casting, the dimensional accuracy of the final molded casting reaches CT7 level, the surface roughness is lower than Ra12.5μm, the surface of the casting is free of porosity and cracks, the shape of the casting is complete and the structure is clear. The final aluminum alloy (ZL101) finished castings were delivered in 6 days, shortening the production cycle by 85% and reducing the cost by 32%.

Xin Xin casting responsible person Tan Dawei said, now more orders to do over, two 3DP sand printer 24 hours on continuous operation, the current monthly printing capacity of 20 tons of sand has been far from meeting the huge market demand. Xinxin Casting will introduce more 3DP sand printers next, to achieve the monthly production capacity of nearly 100 tons, the annual output value of nearly 100 million yuan of the goal. "Nowadays, we can produce all kinds of complex structures, the efficiency has been improved by two times, and the cost has been reduced by half. At the same time, because the delivery cycle has been significantly shortened, the profitability of the product has also been greatly improved, we get a real benefit." In many traditional casting enterprises are still due to high energy consumption, high pollution, product precision can not meet the requirements and face the transition dilemma, Xinxin casting has been riding on the 3D printing green casting of the express car successfully realized the breakthrough.

In summary, 3DP sand printing technology for sand performance, processing speed, molding size and other optimization to enhance the obvious advantages, has been maturely applied to the casting production, especially for new product development, complex products and small batch product production. With the progress of the market and the gradual increase in the speed and quality of new product development requirements, I believe that in the next few years, in the face of hundreds of billions of dollars of sand casting market, 3DP sand printing will occupy an increasing share to help China's foundry high-quality development.

[About Ryuen Molding
Longyuan AFS Co., Ltd. is a subsidiary of 3D Printing Technology, Inc. and is one of the earliest enterprises in China to realize the industrialization and servicing of industrial 3D printing, and is a national high-tech enterprise, Zhongguancun high-tech enterprise, Haidian District innovation enterprise, and Beijing Municipal Innovation Enterprise. In 1994, it developed the first commercialized industrial 3D printing equipment with independent intellectual property rights in China - Selective Area Laser Powder Sintering Rapid Prototyping Machine, and is one of the earliest enterprises in China to realize the industrialization and servicing of industrial 3D printing, and it is a National High-tech Enterprise, a High-tech Enterprise in Zhongguancun, an Innovative Enterprise in Haidian District, a Specialized Specialty Enterprise in Beijing, and an Intelligent Manufacturing Key Technology and Equipment Supplier.
Lonmold focuses on 3D printing equipment and manufacturing services, the company has nearly 30 years of experience in 3D printing services, through the research institute, postdoctoral workstations, engineering technology centers "trinity" synergistic innovation system, to provide a solid technical guarantee. Through the self-developed SLS selective laser sintering, SLM selective laser melting, 3DP sand printing, BJ inkjet metal printing, DED directional energy deposition and other series of intelligent equipment, and through the distribution of the country's manufacturing centers to provide users with sand printing rapid casting, wax printing precision casting, finished parts rapid prototyping, gradient metal 3D printing and other rapid manufacturing services. More than 1,000 equipment and processing service users are located in the fields of aerospace, automobile, motorcycle, rail transportation, ship pump valve, machinery manufacturing, art casting, metal processing and so on.