[請益] 58-60HRC 淬火後二次回火間所需之時間
材料:AISI D2 相當於SKD11
用途:沖模之沖頭與刀襯
淬火溫度:1050度C
空冷5.5小時至50-70度C
回火溫度:600度C
可否煩請諸位前輩以溫度-時間圖示表示其二次回火所需之時間
感恩不盡!!
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