JB/T 7363-2002 in English

本标准规定了08、10、15、20等碳素结构钢和15CrMo、20CrMo等合金结构钢制滚动轴承零件碳氮共渗热处理后的技术要求、硬化层深度、硬度的测量、碳氮共渗层显微组织的检查规程。

Scope

This standard specifies the technical requirements, hardened layer depth, and hardness of rolling bearing parts made of carbon structural steels such as 08, 10, 15, and 20 (see Appendix A for foreign brands) and alloy structural steels such as 15CrMo and 20CrMo after carbonitriding heat treatment. Measurement and inspection procedures for the microstructure of carbonitrided layers. This standard is applicable to the above-mentioned carbon structural steel and alloy structural steel as well as low carbon steel cages and needle roller bearing stamped outer rings (thin-walled tensile outer rings) that can meet the requirements of this standard. Carbonitriding heat treatment (effective hardened layer Depth less than or equal to 0.30mm) quality inspection. If the total hardened layer depth is less than or equal to 0.30mm, the quality inspection of carburizing heat treatment for steel cages and stamped outer rings of needle roller bearings (thin-walled stretched outer rings) can also be carried out by reference.