In order to alleviate the shortage of masks, the US military used 3D printing technology to make masks. Although the efficiency was not high, it once again made people interested in this "magic" technology: put powdered raw materials on the printer, and then you can obtain toys, models, automotive parts and even human organs. How can this dreamy scene not make people imagine? Therefore, 3D printing technology is also known as "will promote the fourth industrial revolution." , unlike people's impression that the United States always dominates, in this field, China is the world's number one: China has become the only country in the world that masters the manufacturing technology of large-scale main bearing components of laser molded titanium alloys and puts it into practical applications.
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 The chief engineer of J-15 Sun Cong once revealed that the manufacturing of J-15 has applied 3D printing technology of titanium alloy and M100 steel, such as the main bearing part such as the front landing gear; Professor Huang Weidong of Northwest Polytechnical University also led a team to use 3D printing technology to create a 3-meter-long titanium alloy component, which has become an important part of the C919 aircraft.
J15
At the same time, Professor Huang Weidong also revealed that China has been developing 3D printing technology for about 20 years and has made considerable achievements in this field. It currently has the technology and ability to use laser to form complex titanium alloy components of more than 12 square meters, which is of great help to the research and development of my country's cutting-edge fighter jets. uses this technology, Shenyang Aircraft Corporation has continuously assembled the J-15, J-16, J-31, etc. within one year and conducted test flights. If the titanium alloy forgings of F22 are made using Chinese 3D printing technology, the weight will be reduced by 40% when the strength is comparable, which will greatly improve the thrust-to-weight ratio and thus improve the overall performance of the fighter. If 3D technology is used on fifth-generation aircraft such as the J-20, it will make up for the relatively backwardness of domestic engine technology, so that it will not be too "stopping". In this way, when the engine technology is also improved, the performance of the J-20 will be comprehensively improved.
J-20 performance will greatly improve
. When it comes to laser forming technology for large and complex whole components of titanium alloy aircraft, we have to mention one person. He led the team to overcome this technical difficulty, and he also won the first prize of the National Technology Invention Award for this. uses this technology to manufacture key structural parts in high-end equipment such as aircraft and aircraft engines, which can avoid the defects of traditional manufacturing methods, and eliminate the need for large-scale forging molds, industrial equipment, etc., and has the advantages of low cost, short cycle, high material utilization, reliable quality, and excellent performance. is Professor Wang Huaming.
Professor Wang Huaming
It is not easy to have such results. Professor Wang Huaming said in an interview that the entire team was divided into two shifts when it was the most nervous, and they worked day and night. Some colleagues who worked night shifts could not see the sun for several months. For example, Liu Dong, who was only in his 30s, had his hair turned white; Fang Yanli was still at work two days before delivery... It was Professor Wang Huaming and other well-known or unknown researchers who worked together and showed the spirit of "ant gnawing bones", so that our country could first study this advanced technology and achieve brilliant results in the fields of fighter jets, aerospace, etc. (Weiqi)
