Carburized bearing roller processing technology
A technology of roller processing and carburizing bearings, which is applied in the field of bearing processing, can solve problems such as high carburizing process, coarse grains, and complicated process, and achieve the effects of optimizing comprehensive performance, high contact fatigue life, and high relative purity
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[0014] A kind of carburizing bearing roller processing technology, comprises the following steps:
[0015] c. Forging: The weight percentage of the chemical composition in the forging embryo is: C: 0.95-1.05, N: 0.5-1.2, Mn: 0.3, Ni0.2-0.3, Si: 0.15-0.35, S: B; = 0.020, P : B; = 0.027, Cr: 1.30-1.65, heated to 600-700°C, forged, then heated to 600-800°C, kept for 5-7 hours, cooled to 300°C at 22°C / hour, and then cooled at 20°C / hour, cooled to normal temperature; b, finishing car:
[0016] Forging the blank to the size, leaving a margin of 0.1mm on the outer circle, and using a vibrating head to process the surface of the workpiece to Ra0.4;
[0017] c. The obtained bearing steel is subjected to quenching at 900°C and secondary tempering at 170°C by carburizing heat treatment;
[0018] d. Centerless grinding:
[0019] Grind the product to the required size, the finish is below R0.1, and pack the parts.
[0020] The carburized bearing roller steel obtained by the present i...
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