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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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