September 2, hosted by the Liaoning 3D Printing Industry Association, Liaoning Juzi Industrial Co. "The inaugural meeting of the Association was held in Shenyang International Convention and Exhibition Center. Leaders from Liaoning province and city, as well as experts, scholars and entrepreneurs in 3D printing industry were invited to attend.

　　In the morning of the Association's founding meeting, the election of the first leadership list, Liaoning Juzi Industrial Co., Ltd. Lu Shengping, Chairman of the Association, the former Deputy Director of the Shenyang municipal people's Congress, Song Tieyu, Chairman of the Board of Directors of the Beijing SANDY Printing Technology Company Limited, Dr. Zong Guisheng Honorary President of the Association.

　　In the future development, the association will coordinate the 3D printing technology and industry-related resources within the scope of Liaoning Province, enhance the level of research, development, manufacturing and service in the field of 3D printing technology-related areas, promote the promotion and application of 3D printing technology standards, protect intellectual property rights and promote industrial development. Unite and lead the members, vigorously carry out cooperation among industries, universities and research institutes, make joint breakthroughs in technological innovation of emerging science and technology industry, form a technological innovation cooperation organization for emerging science and technology industry with joint development, complementary advantages, benefit sharing and risk sharing, drive the technological progress of the industry, and enhance the overall competitiveness of the industry. To make the emerging technology industry bigger and better, and to realize the rise of Liaoning Province's comprehensive strength at a high level.

　　In the afternoon, the "3D Printing and Enterprise Transformation and Upgrading" Summit Forum was hosted by Dr. Zong Guisheng, Chairman and CEO of Beijing SANDI Printing Technology Co.

Zong Guisheng: 3D Printing and Enterprise Transformation and Upgrading

　　Dr. Zong Guisheng firstly analyzed the current situation of China's manufacturing industry. Although China became the world's largest manufacturing country in 2010, there are still many problems such as low level of overcapacity, low management level, low technological content and value-added products, and weak technological innovation ability. Facing the loss of cost advantage, forced mandatory elimination, the Internet impact fierce, the industrial environment has changed dramatically the heavy challenges. The transformation and upgrading of Chinese manufacturing enterprises is imminent.
How to transform? Dr. Zong Guisheng believes that we should start from the integration of "intellectual manufacturing" and the social value chain, the integration of "quality manufacturing" and the civilized development of the ecological chain, the integration of industrial chain extension and industrial integration, the integration of new high-tech industries and traditional industries, etc., and ultimately achieve the transformation to "Light", "refined", "strong" transformation.

　　In recent years, from the U.S. Obama administration will be listed as 3D printing to stimulate the return of the manufacturing industry, accelerate the U.S. economic growth of an important "weapon", to Germany's "Industry 4.0" strategy to support the development of a new generation of revolutionary technologies in the field of industrial R & D and innovation, and then the domestic "Made in China 2025" plan clearly to enhance the overall competitiveness of China's manufacturing sector tasks and goals. Made in China 2025" plan clearly enhances the overall competitiveness of China's manufacturing industry tasks and goals, the global manufacturing countries have introduced competitive strategies. Today, with the escalating challenges of global manufacturing, in order to be undefeated in the competition, we need to improve efficiency, shorten the time to market, and enhance flexibility, and these needs have driven the development of smart manufacturing. 3D printing, as one of the core technologies of smart manufacturing, has the great potential to change the entire production industry, and is expected to become the key link in China's high-end manufacturing industry, and to promote the upgrading of China's manufacturing industry.

　　3D printing creates a new ability to produce items of all shapes and sizes, enabling engineers to design more complex products that were previously unattainable.3D printing is widely used in aerospace, automotive manufacturing, foundry, medical, digital construction, civil, and other fields of rapid prototyping and additive manufacturing due to its advantages of manufacturing complex parts, product diversification at no additional cost, no assembly, cloud-based manufacturing, zero-skill manufacturing, portable manufacturing, and net molding. and other fields of rapid prototyping, rapid manufacturing. However, if you do not change the rules, requirements and expectations, 3D printing compared to traditional manufacturing has many defects, can not be used to replace the traditional mature manufacturing methods; and if you change the rules, requirements and goals, 3D printing as another manufacturing method, incremental development, 3D printing will bring a new era of design, manufacturing. Looking to the future, we should apply 3D printing thinking to design and manufacture products, embrace intelligent manufacturing, use 3D printing thinking to design and manufacture products, and promote enterprise transformation.

Li Shujun: "Electron beam molten metal molding technology in orthopedic implantable device applications".

　　Dr. Shujun Li from Shenyang National (Joint) Laboratory of Materials Science, Institute of Metals, Chinese Academy of Sciences, elaborated and analyzed the Electron Beam Melting Metal Forming (EBM) technology and its application in the field of orthopedic implantable devices. According to the introduction, EBM is a computer program-controlled high-precision rapid manufacturing technology, which can realize the design and manufacture of any structure of metal materials, the comprehensive mechanical properties of its materials are better than the casting process, and the metal powder can be recovered and recycled.

　　In recent years, the application of EBM orthopedic implantable devices has continued to grow. The main applications are: rapid manufacturing of individualized customized joints. Such as personalized customized knee joints, bone trabecular structure cranial repair implants, individualized customized hip joints, etc.; titanium alloy porous implantable devices. Such as gradient porous femoral head support rod, bone trabecular structure acetabular cup, porous cage implant material, etc..

　　Afterwards, Dr. Li Shujun gave a comprehensive analysis of the preparation process of EBM, mechanical properties of components prepared by EBM, and biocompatibility of components prepared by EBM, etc. He also pointed out that EBM is an advanced metal forming technology developed internationally in recent years. It is also pointed out that electron beam melting metal forming (EBM) is an advanced metal forming technology newly developed internationally in recent years. This technology can efficiently prepare high-performance titanium alloy individualized orthopedic implant devices and porous titanium alloy orthopedic implant devices, which can significantly improve the osseointegration ability of metal implants, and has a broad application prospect in the field of orthopedic implant device applications.

Wang Lianfeng: "Application of Laser Selective Melting in Aerospace

　　Prof. Wang Lianfeng, Director of Shanghai Aerospace Additive Research Laboratory, Distinguished Professor of University of Science and Technology of China (USTC), Vice Chairman of China 3D Printing Technology Industry Alliance and President of Shanghai Additive Manufacturing Association, introduced the laser selective zone melting additive manufacturing technology (SLM) and its application in aerospace. Laser selective melting additive manufacturing technology (SLM) is a technology in which metal powder is selected layer by layer under the thermal action of a laser beam to be completely melted, cooled and solidified and shaped, and its advantages in manufacturing efficiency, manufacturing precision, structural complexity, mechanical properties, etc., have made it the most urgently demanded additive manufacturing technology in the aerospace field. Many countries around the world have widely carried out related research and testing: for example, NASA uses SLM to print rocket nozzles and nozzle ignition tests; Monash University in Australia uses SLM technology to manufacture aero-engines, etc.; GE adopts SLM technology to develop key components of the combustion system of the LEAP engine; Honeywell uses it for the vertical take-off and landing drones to survey the Fukushima nuclear power plant after the leakage; China's related research has been carried out in the past few years. China's relevant research institutions are also targeting the weightlessness, vacuum, large temperature difference, limited power supply and other unique problems in space research, and has been applied to 3D printing technology in the manufacture of some aerospace precision parts. In the future, the application of 3D printing technology in aerospace will develop from ground processing, on-orbit assembly and on-orbit manufacturing to the direction of alien base construction.

Huijun Yi, "Application and Development of Resin Materials in 3D Printing

　　Ms. Yi Huijun, Senior Engineer, Project Manager of Resin Application Research Institute of Beijing Yanshan Petrochemical High-Tech Technology Co., Ltd. and Sinopec Beijing Yanshan Branch, introduced the application of resin materials in 3D printing and its development status. polymer materials used in 3D printing mainly include thermoplastics, photosensitive resins, rubber-like materials, composite materials, etc., and biomaterials, cellular materials, and DNA framework materials, Biomaterials, cellular materials, DNA framework materials, stem cell materials and other materials with great future prospects are also in the research and development stage, and there is a huge space for imagination. From the current application of China's 3D printing market, ordinary materials occupy half of the market, domestic self-developed mid-range material products accounted for about 40%, foreign high-quality imported consumables accounted for 10%. For the future application of 3D printing materials, such as Yanshan Petrochemical Resin Application Research Institute, such as the authoritative scientific research institutions will be committed to the development of more special-purpose consumable products for specific requirements of the development of more functional products, and the development of the future prospects for 3D printing materials. In view of the future application prospect of 3D printing materials, authoritative research institutes such as Yanshan Petrochemical Resin Application Research Institute will be committed to developing more special-purpose consumable products, developing more functional products for specific requirements, and improving the applicability of materials and 3D printing equipment.

Lu Chun: "3D Printing is All Around Us

　　Shenyang University of Aeronautics and Astronautics, Department of Aerospace Engineering, Professor Lu Chun pointed out that in the absence of contact with 3D printing before the processing of molds or parts, we usually habitually consider the use of CNC machining of milling processing, that is, subtractive molding process; and familiar with the 3D printing process, it will be used as a 3D printing technology as a way to solve our problems. For example, 3D printing cell phone case, with 3D printing manufacturing carbon fiber tee tube molding mold, manufacturing composite propeller molding mold and composite elevator rudder molding mold, etc. 3D printing makes our life and work easier.

　　For the future development of 3D printing, Prof. Lu Chun put forward several expectations:

　　Can have more excellent mechanical properties and heat resistance. Currently based on resin (plastic)-based 3D printing technology, more than low mechanical properties of PLA, ABS, PS and other resins as a printing material, low mechanical properties, poor temperature resistance, usually only used at room temperature, the ambient temperature is higher than 80 ℃ workpiece of the complete loss of mechanical properties. Many researchers have tried to modify the resin matrix. Such as through the addition of short-cut carbon fiber in the ABS material, the use of carbon fiber reinforced ABS resin, the mechanical properties of the prepared workpiece for the ABS material 30 times; in the resin to add ceramic materials, the use of resin as a carrier, after the row of glue, sintering, glazing and other processes, you can print the workpiece's temperature resistance to more than 1,000 ° C. At present, we and the domestic research institutes are also carrying out the study of this technology. Some progress has been made.

　　Have faster molding speed and higher molding precision. Have the functionality of sound, light, electricity, magnetism and so on. People's 3D printing materials will not only meet the needs of the molding process, but also put forward requirements for the functionality of the material. At present, the research results in this field are beginning to come out one after another. For example, the United States Northwestern University's research team developed a high graphene content can be 3D printing graphite, graphene content can reach 60% or more, it will be given to the printing material thermal conductivity, electrical conductivity. At present, the research and development of printable functional materials is in an accelerated stage of development, and I believe that more products will be available soon.

　　Finally, Prof. Lu shared the current research progress of his team. Its research and development of 3D printer and control software, the use of TCP control communication protocol, and high-precision servo motor closed-loop control, to effectively ensure that the printing process does not lose steps, the printer is currently working continuously and stably for more than 140 hours, there is no model misalignment, filament breakage problems. Its self-developed high-speed printer printing accuracy of 0.025mm, the fastest molding speed of 60mm / hour.

Liu Jianrong: "Research Progress on Titanium Alloys for Electron Beam Fused Wire Deposition".

　　Dr. Liu Jianrong from Institute of Metals, Chinese Academy of Sciences, introduced the research progress of titanium alloy wire for electron beam fusion deposition (EBRM). He pointed out that the metal material 3D printing technology needs to solve the four control problems: control "shape", that is, the shape, dimensional accuracy, equipment, process; control "sex", that is, the performance of the parts, material composition and heat treatment; control defects, that is, pores, porosity, cracking; control costs, that is, materials, processes, equipment, its technological advantages will eventually be realized. That is, material, process, equipment, its technical advantages can eventually be manifested.

　　Electron beam fused deposition is one of the four typical 3D printing technologies for metallic materials. It can realize rapid manufacturing of large structural blanks, filaments, and space in-orbit manufacturing in a vacuum environment. Domestic electron beam fused filament deposition technology has been developed relatively quickly since 2010, and the current technology chain is relatively complete, with balanced development and greater progress in equipment, materials, and process research, and preliminary applications in the aviation field. Titanium alloy is a more ideal 3D printing material, its weldability is good, low tendency of biocrystallization and segregation, cold cracking, thermal cracking phenomenon is not obvious, wide range of uses, physical properties of active, but the cost is high. titanium alloy filaments for EBRM, with the advantages of simple process and low cost. At present, several strength levels of titanium alloy wire have been developed in China to meet the needs of the current stage of development and application of EBRM technology. Domestic EBRM technology is at a relatively advanced level in the research and application of aerospace structural components.

　　For the current equipment "short board" problem, Dr. Liu Jianrong believes that we should actively support the breakthrough of the core technology of the equipment to occupy the strategic high point of the 3D printing industry. At the same time, we should promote the synergistic and rolling development of equipment, materials and processes, improve the equipment (functionality, stability) through the process, improve the overall technical level through the integration of materials, highlighting the advantages of 3D printing technology, and improve the competitiveness of the industry. The government, the association should also focus on the development of the industry, resource integration and effective use, and ultimately achieve win-win cooperation.

　　Fu Xinliang: "Innovation and Development of China's Body-in-White Equipment Industry in 2015

　　FAW Mould Manufacturing Co., Ltd. enterprise management and information technology room director, senior engineer Dr. Fu Xinliang shared the innovation and development of China's body-in-white equipment industry, and combined with the application of 3D printing in the field of automotive mold manufacturing proposed direction. According to the introduction, the current rapid development of China's body equipment manufacturing industry, thanks to years of technical cooperation with international advanced enterprises. The strong growth of China's body equipment manufacturing industry also makes the world's automotive equipment industry presents new vitality, for the world automotive industry to get rid of the financial crisis, re-entering the development track has made an important contribution. Now "Made in China 2025", "the new two integration" and other information technology and manufacturing in-depth integration of the main line of the new round of manufacturing upgrading has been kicked off. In the future, China's body equipment manufacturing will be deeply integrated into the global trend of manufacturing upgrading.

　　Dr. Fu Xinliang believes that 3D printing in the field of automotive mold manufacturing can be applied to mold inserts, mold foam solid type, small batch, trial mold or product parts, welding or rolling support block, checking fixture resin support block and other fields. For example, the application of mold inserts. The advantage is that the processing of small amount of retention, low processing costs, good surface quality, can be molded into complex shapes, the mechanical properties of the material to meet the use of requirements, but the printing cost is higher, longer cycle time, less batch.