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1) forging
By forging processing can eliminate the inherent defects of metal metal, improve the organization, so that the metal streamline distribution is reasonable, metal tightness good. Forging molding processing technology is widely applied to the unidirectional bearing NSK molding processing, the processing can be finished products from small diameter ~20mm to 5000mm diameter oversize products. Forging forming method for common are: hot forging and cold forging, warm forging, hot forging in China mainly to.
Hot forging processing because of its molding processing equipment is different and is divided into: free forging processing, press forging process, the forging process of flat forging machine and high speed cold forging machine forging process.
2) cold rolling forming
Cold ring rolling process is a kind of improve the material utilization rate, improve the metal structure compactness, maintain the advanced technique for metallic flow linear, it is a chipless machining method. Theoretically, the cold rolling forming products without turning can be directly used for heat treatment and grinding. At present, the cold rolling technology is mainly applied to the medium and small NSK deep groove ball one-way bearing,