Six key heat treatment technology problems in bearing manufacture

If the improper heat treatment, bearing heat treatment is the core of the bearing manufacturer, one of the key technology of heat treatment process and the physical properties of raw materials determines the bearing the final hardness, uniformity of hardness, abrasion resistance and contact fatigue life.What problems will arise?

Heat treatment deformation
Bearing parts in heat treatment, there is the thermal stress and organization stress, the internal stress can overlay or partially offset each other, is complex and changeable, because it can as the heating temperature, heating rate, cooling, cooling speed, parts of the change of the shape and size changes, so the heat treatment deformation is inevitable. Understanding and mastering the change rule of bearing parts can make the deformation of bearing parts (such as the ellipse of the ring, the size increase, etc.) in a controllable range, which is conducive to the production. Of course, mechanical collision during heat treatment will also cause deformation of parts, but such deformation can be reduced and avoided by improved operation.