Different workpiece cryogenic treatment temperature

2023-07-11 20:34:29

Different workpiece cryogenic treatment temperature

The temperature of cold treatment is mainly based on the martensitic transition termination temperature Mf of the steel, and the influence of cold treatment on mechanical properties and processability are also considered. For GCr15 steel, -70℃ is selected for cold treatment; When the precision requirements are not very high, the cold treatment temperature can be selected as -40 ~ -70℃; Ultra-precision bearings can be cold treated between -70℃ and -80℃. The temperature of supercooling affects bearing impact fatigue and contact life.

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