On February 5, 2012, the research project of Shanghai Major Technical Equipment Development Project completed by the research team of Professor Hu Dejin of the School of Mechanical and Power Engineering of Shanghai Jiaotong University, the research and development of large-scale high-hard spherical CNC precision grinding technology and equipment was adopted by the Ministry of Education. Expert identification of the organization. 
The large-scale high-hard spherical CNC precision grinding technology at the site of the appraisal meeting is the key technology for the manufacture of core components of fluid and gas control devices in national major energy projects such as West-East Gas Transmission, Coal Chemical Industry, Petrochemical, Photovoltaic Power Generation and Nuclear Power. 
After grinding, the large-scale high-hardness spherical surface surrounds this technical problem. After nearly seven years of research and development, the research team invented a new process method for centering and oscillating CNC precision grinding for small and medium-sized high-hard spherical surfaces. The new technology of vertical spherical CNC precision grinding of hard spherical surface, research and development of related technical equipment, these new process methods and technical equipment in Beijing, Shanghai, Jiangsu, Zhejiang and other provinces and cities to promote the application, produced a good Economic and social benefits. The appraisal meeting was held in the academic lecture hall of Qian Xuesen Library. The appraisal committee consisted of experts from Huazhong University of Science and Technology, Dalian University of Technology, Nanjing University of Aeronautics and Astronautics, Huaqiao University, and academicians, professors and chief engineers. The expert group listened carefully to the introduction of the research group, reviewed the technical data in detail, and went to the site to check the actual operation. 
The expert on-site inspection appraisal committee unanimously agreed that the overall technology of the achievement has reached the international advanced level. Among them, the large-scale high-hard spherical vertical vertical CNC precision grinding method is internationally original. After the appraisal meeting, the experts visited the Qianxuesen Library of Shanghai Jiaotong University.
The large-scale high-hard spherical CNC precision grinding technology at the site of the appraisal meeting is the key technology for the manufacture of core components of fluid and gas control devices in national major energy projects such as West-East Gas Transmission, Coal Chemical Industry, Petrochemical, Photovoltaic Power Generation and Nuclear Power. After grinding, the large-scale high-hardness spherical surface surrounds this technical problem. After nearly seven years of research and development, the research team invented a new process method for centering and oscillating CNC precision grinding for small and medium-sized high-hard spherical surfaces. The new technology of vertical spherical CNC precision grinding of hard spherical surface, research and development of related technical equipment, these new process methods and technical equipment in Beijing, Shanghai, Jiangsu, Zhejiang and other provinces and cities to promote the application, produced a good Economic and social benefits. The appraisal meeting was held in the academic lecture hall of Qian Xuesen Library. The appraisal committee consisted of experts from Huazhong University of Science and Technology, Dalian University of Technology, Nanjing University of Aeronautics and Astronautics, Huaqiao University, and academicians, professors and chief engineers. The expert group listened carefully to the introduction of the research group, reviewed the technical data in detail, and went to the site to check the actual operation. The expert on-site inspection appraisal committee unanimously agreed that the overall technology of the achievement has reached the international advanced level. Among them, the large-scale high-hard spherical vertical vertical CNC precision grinding method is internationally original. After the appraisal meeting, the experts visited the Qianxuesen Library of Shanghai Jiaotong University.ASSA ABLOY Style Industrial High Performance Doors
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