Maintains a material and heat treatment - bearing knowledge

When bearing work, especially the high speed rotates, cage to bear a lot of centrifugal force, impact and vibration, large sliding friction, and generate a lot of heat. Required materials, therefore, good thermal conductivity, good wear resistance, small friction coefficient, the proportion of small, a certain strength, and the expansion coefficient of rolling body close, and good processing performance. Special purpose bearing cage and special requirements, such as high temperature resistance, etc. At present there are high quality low carbon steel (commonly used material of cage 08年10 10 08 f, f) , brass, stainless steel, spring steel, alloy steel tube, phenolic adhesive, plastic, etc. Maintains a heat treatment is mainly used for punching cage, mostly between heat treatment process, make to regain the plastic property of the materials, because of the cage processing will produce serious work hardening and internal stress. This kind of heat treatment are: high quality carbon steel plate cold stamping maintains a recrystallization annealing ( Heated to a temperature of about 600 ℃, 2 ~ 3 h, furnace cold) ; Brass with cold stamping maintains a recrystallization annealing ( Heating to 600 ~ 650 ℃, 30 min insulation, air cooling or water cooling) ; Stainless steel with cold stamping softening treatment etc.