執(zhí)行器IC20-15W3T芯科技，芯創(chuàng)新；85311040
一種方法是淬火，單純提高硬度，但是韌性差，易斷裂；二是淬火后退火，提高硬度同時不降低韌性；三是滲碳或滲氮或碳氮共滲，提高表面硬度，內(nèi)部不變。號鋼淬火后沒有回火之前，硬度大于HRC55（可達HRC62）為合格。實際應(yīng)用的硬度為HRC55（高頻淬火HRC58）。GB/T699-1999標準規(guī)定45鋼抗拉強度為6MPa，屈服強度為355MPa，伸長率為16%，斷面收縮率為4%，沖擊功為39J硬度：未熱處理≤229HB；退火鋼≤197HB，淬火后表面硬度可達45～52HRC。
福建鴻飛達自動化科技有限公司
創(chuàng)立于：2011年03月03日
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