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According to reports, ultra-precision mirror processing of large metal plane workpieces has been the goal of testing, military, aerospace, equipment manufacturing and other fields. At present, most of the mirror processing equipment that can be inquired internationally can only be used for ultra-precision machining of small parts or by manual polishing and grinding, and the surface roughness of the finished product is difficult to reach ultra-precision level, that is, Ra0.05 or less.
The ultra-precision milling integrated machine tool developed by Huagong Machine Tool for Baosteel is the first milling and grinding process on the surface of ultra-low carbon steel produced by Baosteel. The steel has a low carbon content and also contains materials such as ruthenium, titanium, aluminum, etc. The material of the steel slab is particularly soft, has a large deformation amount, and is very difficult to process. The machine adopts the integrated milling technology. Through milling, rough grinding, semi-finishing and ultra-precision grinding, the mirror processing of the entire billet can be efficiently performed in 3 hours. The experts who came to the inspection said that the feed grinding of 0.01mm (mm) can be achieved on the heavy machine with more than 40 tons and 12 meters long, indicating that the Huagong machine tool has the ability to manufacture ultra-precision machine tools; The mirror effect below Ra0.02 ensures Baosteel's full-end metallographic inspection of the entire billet, providing a reliable guarantee for the production quality of steel materials.
Steel billet "change" mirror as long as three hours
Abstract On the 4th, Qiqihar Huagong Machine Tool Co., Ltd. learned that the company recently delivered a large-scale ultra-precision mirror milling and milling machine to Shanghai Baosteel. The machine can add 230mm × 1900mm (mm) billet surface in 3 hours...
On the 4th, it was learned from Qiqihar Huagong Machine Tool Co., Ltd. that the company recently delivered a large-scale ultra-precision mirror milling and milling machine to Shanghai Baosteel. The machine can machine the surface of a 230mm × 1900mm (mm) billet into a mirror in 3 hours. Baosteel Group's acceptance report shows that the surface roughness has reached Ra0.02-0.013 at any point on the surface of the large billet (that is, the average arithmetic deviation of the contour is between 0.02 and 0.013 microns). This marks that Huagong Machine Tool has overcome a world problem in the field of super-finishing mirrors, and has realized ultra-precision mirror processing of large-scale metal planes in China.