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H13硬度多少
H13硬度多少
2025-03-16 06:09:39
推荐回答(1个)
回答1:
淬火温度1020~1050℃,油或空气冷却,淬火硬度HRC56~58
回火温度560--580度,淬火硬度HRC:47~49
一般采用两次回火,第二次回火温度比第一次低约20度左右。
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