From a few centimeters to a few tens of centimeters high, a curved metal plate is covered with small lattices with an oblique angle. This metal piece, called “grateâ€, is the part on the plane. The finished product looks simple and the manufacturing is not normal - 3D printing. Because of their curvature and the angle of the small grid can not be completed by the traditional mechanical processing. The design and processing of this special part is a group of young people of the high-energy beam processing technology key laboratory of the Aviation Industry Engineering Research Institute of Beijing Aviation Industry Engineering Institute. The average age is in the early 30s, and the heads of all professional departments are only 35 years old. . A 420-mm-high part they completed was the largest titanium aircraft part ever printed in the world. This "additive manufacturing technology", which is commonly referred to as 3D printing technology, consists in laying a layer of metal alloy powder layer by layer and laser-melting it in accordance with the designed route to make the parts printed one layer at a time. To print tens of thousands of layers. It has been involved in this international cutting-edge technology since more than 10 years ago, and it has reached the international highest point in the same field today. The project leader, Locke Hongbo, said that this is due to the leader of the laboratory—the chief expert of AVIC special processing technology. Water conservancy. In June of this year, Gong Conservancy won the Brooke Prize in 2013. This award, hailed as the Nobel Prize in the international welding industry, was awarded to the Chinese for the second time after he was awarded the Academician Guan Bridge of the Chinese Academy of Engineering nine years ago. The "additive manufacturing technology" for printing titanium alloy aircraft parts was laser welded on the basis of being born out of Gong Shui. "10 years ago, when I was asked by Gong Zhuren to start researching this technology, I still don't understand it because at that time, foreign countries were only at the research stage and there were very few documents." At the beginning of this project, only Lockhei was groping, software and equipment. Everything, such as materials, is zero, and the difficulty can be imagined. Lock Red Wave wanted to give up more than once, but they were all forced by Gong Shui to continue. "The Director Gong asked me to come to the lab for three days and two days." The test is slowly started. Some tests need to be continued for hundreds of hours as long as they are turned on. In this case, the red wave will be locked in the laboratory. The failure of the test is the norm. Sometimes there is a problem in one part, and the whole processing piece will be scrapped. Gong Shui said: "If everything is successful, we must also learn what to do." On September 13, 2009, Xiang Hongbo clearly remembered the day. After three days and three nights of continuous work tests, the first part was printed. However, for technical problems, Lock Red Wave and Gong Shui did not know how many times they had noisy. The biggest disagreement took place in 2010. At that time, the diameter of the internationally produced "Grate" base was 250 mm. Locking Red Wave and its own team members decided to do 280 mm, while Gong Shui required them to do 500 mm locks. Hongbo firmly disagreed and Gong irrigation water was anxious: “If you don’t try to know what you don’t know, you must do the most advanced thing!†After several rounds of disputes, both parties finally made concessions and successfully completed 350 mm, far ahead of their international counterparts. “Without the insistence of Director Gong, we cannot do this.†Lock Hongbo admires Gong Gong’s technical vision. “He often reads the literature and is very sensitive to the frontiers of technology. When he sees one aspect, he tries to achieve it.†In 2003, Gongcong learned that the fuselage of the US Boeing A318 airliner achieved laser welding instead of riveting in the past. This technology reduced the weight of the aircraft body by nearly 20%, and reduced the manufacturing cost by about 20%. “Laser welding technology will promote the transformation and upgrading of the traditional aviation manufacturing industry.†At that time, Gong Shui, who was under 40 years old, had made minor achievements in the welding industry. He was keenly aware of the significance of this information. After that, he quickly applied for a number of pre-research projects, and creatively proposed the idea of ​​dual-beam laser welding. During the basic research phase of the project, the test was repeatedly failed and members of the research team questioned the feasibility of the technology. Gong Shui suffered from pressure, but did not think of giving up: "This is a major innovation in aviation welding, as long as we do a good job of each trial, serious study and analysis, we will be able to succeed." One or two years ago, Gong Shuihui had barely taken a rest. It was common at night to sleep at the test site. Sometimes other colleagues went to work at 8 o'clock in the morning. He just returned from work, went back to rest, and appeared in the laboratory at noon. He led his colleagues to record each test data, observe and study the special phenomena that appeared in the test, and held regular team meetings. Through equal exchanges and extensive discussions, new ideas were generated. At the same time, he would also have to persuade the leaders to obtain financial support because of the high cost of the test pieces. After more than a thousand tests, the pre-research has made a major breakthrough. The superiority of double-beam laser welding is reflected: no deformation, smooth surface, and no defects inside the weld. Later, this technology was applied to a certain type of aircraft, achieving the goals of weight reduction of the fuselage, increase of connection strength, and reduction of smooth surface flight resistance. Afterwards, Gong Shuihui led young colleagues to overcome a number of key technologies and developed a dual-beam laser hybrid welding device. The company established the first high-power dual-beam laser welding platform in China and was successfully applied to the key structure of aviation reinforced siding for the first time. Parts of the welding manufacturing. From a single laser welding a few years ago, the consortium's team has developed a series of technologies that use electron beams, laser beams, and plasma beams as welding heat sources for fusion welding. The international counterpart who had been reluctant to engage in in-depth exchanges with Gong Shui, has now actively invited him to cooperate in depth. Now, Gong Shuihui is paying attention to the next technological frontier: the use of ultra-fast laser technology to complete the integration of aircraft parts manufacturing, not only the structure of complex parts can be processed at one time, they also use lasers to deal with the surface of these parts. “This is actually a bionic technology. After nano-level laser processing, it can make the aircraft form a lotus leaf-like surface without water and the least resistance in the air.†37-year-old Ma Guojia is the head of R&D for this technology. He still remembered how he had just arrived in the museum a few years ago. Gong Ronghui asked him how many papers he had sent for the first time. This made Ma Guojia very touched: “He focused on basic research. I think this is the success of our team. One of the important factors." (Editor)