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Factors Affecting the Service Life of Bearing Steel Ball and Solutions
2022-11-17
① Raw material quality:
Existing problems: inclusion, macrostructure disqualification, titanium content exceeding the standard, decarburization, cracking, etc.
Control measures: strengthen the inspection control of raw material procurement; Select materials from brand steel mills.
② Heat treatment method:
Existing problems: decarburization and metallography exceeding the standard.
Control measures: select automatic control equipment such as temperature, time and gas protection; Strengthen the training of operators to reduce human influence; Strengthen process inspection and control, find out the cause of abnormality in time and take measures.
③ Surface strengthening process:
Existing problems: the depth of steel ball reinforcement layer of steel forged bearing is not enough.
Control measures: strengthen process management, strengthen time selection, automatically control the time controller, regularly check the damage degree of the intensifier blades, and spot check the speed of the intensifier; Regularly check and analyze the depth of steel ball strengthening layer.
④ Surface defects of various steel balls:
Existing problems: surface defects such as scratch, rust, etc.
Control measures: strengthen the tooling control process to avoid the occurrence of defective balls; Improve the accuracy of eddy current or photoelectric equipment to ensure that all defective balls are removed; Analyze the photoelectric or eddy current damaged ball, and scrap the whole batch as long as burrs or cracks are found.
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