Lecture: A New Breakthrough in the Field of Additive Manufacturing - Progress in Metal Construction Technology
Speaker: Prof. Sun Mingyue
Venue: Meeting Room 320, National Project Center, East Campus
Date: Thursday, September 20, 2018
Prof. Sun Mingyue is a researcher and doctoral supervisor of the Institute of Metal Research, Chinese Academy of Sciences. He has mainly engaged in the basic theory and engineering technology research of hot processing of special steel and large forgings. He was selected as a core member of the “Innovation Team for Key Talents in Innovative Talent Promotion Program” of the Ministry of Science and Technology, “Taishan Industry Leading Talents” in Shandong Province, “Millions of Talent Projects” in Liaoning Province, and Chief Expert of “Innovative Interdisciplinary Team” of Chinese Academy of Sciences. He is currently a standing director of the Youth Committee of the China Society for Materials Research. In 2017, he was selected as an associate member of the Asia Pacific Academy of Materials Science (APAM). Currently, he has presided over more than 20 key projects, published 37 papers, authorized 30 invention patents, won the second prize of National Science and Technology Progress Award, the second prize of Liaoning Science and Technology Progress Award, the China Industry-University-Research Cooperation Innovation and Promotion Award, Dalian City. He has more than 10 scientific and technological awards such as the First Prize of Science and Technology Progress, the Outstanding Science and Technology Achievement Award of the Chinese Academy of Sciences, and the Lu Jiaxi Young Talent Award of the Chinese Academy of Sciences.
Large forgings are the core components of China's energy, power, transportation, aerospace, and weaponry industries. Their manufacturing capabilities are one of the important indicators for measuring a country's industrial level. Contrary to the high quality requirements of large forgings in major projects, the larger the size of the forging, the more serious defects in the internal organization, and the lower the degree of homogenization. The root of this problem is that traditionally, large forgings are manufactured by means of “big-scale”, that is, large ingots are the priority in the manufacture, which leads to the poor homogeneity of the forging, which seriously affects the material performance and has become a worldwide problem.
Therefore, there is an urgent need to develop transformative technologies, solve defects such as macro-segregation of large forgings, and achieve homogenization preparation. Inspired by the construction field, the Chinese Academy of Sciences is the first in the world to propose a new material processing technology: metal construction molding technology. This technology is to process a plurality of homogenized substrates by surface treatment, stacking and blanking, and vacuum packaging. Perform large deformation at high temperatures, fully heal and eliminate the interface to achieve “no trace connection”. The core idea is “primary construction, small system”, which is the original innovation in the field of large component manufacturing that has not been reported internationally. Through five years of basic research, the current metal forming and forming technology has been applied to hydropower engineering runner spindles, UHV transmission tower rings and other products, which are expected to solve ships, fast reactors, Card neck problems in the manufacture of core components such as gas turbines and aerospace.
All are welcome.
National Engineering Research Center for Equipment and Technology of C.S.R
[Translated by Lv Bo]