Characteristics of ball screw ball nut material bearing steel. The quality of ball screw is not only related to its manufacturing process, but also to the raw materials used. Bearing steel is one of the common ball screw ball nut materials now. What are the characteristics of this material?

    The physical properties of bearing steel are mainly based on the inspection of microstructure, decarburization layer, non-metallic inclusions, and macrostructure. Generally, it is delivered by hot rolling annealing and cold drawing annealing. The delivery status should be indicated in the contract. The macrostructure of steel must be free of shrinkage cavities, subcutaneous bubbles, white spots and microscopic pores. The central looseness and general looseness shall not exceed level 1.5, and the segregation shall not exceed level 2. The annealed structure of steel should be evenly distributed fine-grained pearlite. The depth of decarburization layer, non-metallic inclusions and carbide unevenness shall comply with the relevant national standards.

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