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Contents and Requirements of Rack Surface Hardening Treatment
- Jan 18, 2019 -

Contents and Requirements of Rack Surface Hardening Treatment


After processing, first of all, the steel pattern should be analyzed. The stress concentration at the root of the rack should be considered. Therefore, after quenching, the center of the root should be checked to meet the requirements. The surface of rack teeth should be inspected to see if there are cracks in the rack teeth. For small batches, all the cracks should be inspected. For large batches, the surface hardness of rack should be inspected according to a certain proportion. The surface hardness of rack should also be inspected. Generally, the hardness of rack should be 45-50 HRC, and the hardness of rack with larger carrying capacity should be 50-55 HRC.