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See Chinese contents: GB/T 34891-2017 GB/T 34891-2017: Rolling bearings -- Parts made from high-carbon chromium bearing steels -- Specifications for heat treatment
This Standard specifies the technical requirements and test methods for annealing, quenching and tempering of G8Cr15, GCr15, GCr15SiMn, GCr15SiMo, GCr18Mo steel rolling bearing rings and rolling elements (hereinafter referred to as bearing parts) in accordance with GB/T 18254. This Standard is applicable to the heat treatment quality inspection of the above-mentioned steel bearing parts process and finished parts, and also to the heat treatment quality inspection of other high-carbon chromium steel bearing parts. For bearing parts with special requirements, perform according to the specifications of corresponding product drawings.
