The project, jointly implemented by Donge Steel Ball and Luoyang Bearing Research Institute, has been granted with 1 invention patent and utility model patent for now.
In the practical application process, the efficiency of the high-speed multi-station cold heading method is increased by 4 times compared to conventional methods, and the material utilization is increased by 8%.
A new enhanced-type machine developed in the project has solved current issues occurring in the hardening process such as uneven surface layer depth, hardness and stress which can affect the fitting rate and service life of steel balls.
According to the State Bearing Quality Supervision, Inspection and Testing Center, all test samples made in this project have met the national standard G5 and higher level.
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