Hardness can do 61 — 65hrc maturation process is: annealing, softening after casting machining, machining of air cooling after quenching and low temperature stress tempering.
硬度能做到61——65hrc成熟工艺是：铸造后软化退火，便于加工，加工后空冷淬火加低温去应力回火。
According to the tempering temperature and hardness curve, the redistribution of residual stress is associated with the transformation of residual austenite.
由回火温度与硬度变化曲线证实，残余应力重新分布是与残余奥氏体转变相关联。
You cannot know yourself fully without challenge, stress, distress, and unusual circumstances tempering the good times.
除非经由挑战、压力、沮丧、不寻常的环境调剂好时光，否则你不可能充分认识你自己。
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