床身類鑄(zhu)(zhu)(zhu)件(jian)(jian)(jian)產品作(zuo)為一種大型鑄(zhu)(zhu)(zhu)件(jian)(jian)(jian) 要經過(guo)(guo)熱處理(li)(li)才能(neng)提高(gao)本身的(de)(de)(de)(de)(de)使(shi)用(yong)(yong)性(xing)(xing)(xing)(xing)能(neng),鑄(zhu)(zhu)(zhu)鐵鑄(zhu)(zhu)(zhu)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)內(nei)在質(zhi)(zhi)量。金屬熱處理(li)(li)是(shi)(shi)機械(xie)制(zhi)(zhi)造中(zhong)的(de)(de)(de)(de)(de)重要工(gong)藝(yi)之一,與(yu)其它加工(gong)工(gong)藝(yi)相比,熱處理(li)(li)一般不改(gai)變(bian)工(gong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)形狀和整(zheng)體的(de)(de)(de)(de)(de)化(hua)學(xue)成分,而是(shi)(shi)通(tong)過(guo)(guo)改(gai)變(bian)工(gong)件(jian)(jian)(jian)內(nei)部的(de)(de)(de)(de)(de)顯(xian)微組織(zhi),或改(gai)變(bian)工(gong)件(jian)(jian)(jian)表面的(de)(de)(de)(de)(de)化(hua)學(xue)成分,賦予(yu)或工(gong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)使(shi)用(yong)(yong)性(xing)(xing)(xing)(xing)能(neng)。其特(te)點是(shi)(shi)工(gong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)內(nei)在質(zhi)(zhi)量。為使(shi)金屬工(gong)件(jian)(jian)(jian)具有(you)所需要的(de)(de)(de)(de)(de)力學(xue)性(xing)(xing)(xing)(xing)能(neng)、物理(li)(li)性(xing)(xing)(xing)(xing)能(neng)和化(hua)學(xue)性(xing)(xing)(xing)(xing)能(neng),除合(he)理(li)(li)選用(yong)(yong)材料(liao)(liao)和各種成形工(gong)藝(yi)外(wai),熱處理(li)(li)工(gong)藝(yi)往往是(shi)(shi) 的(de)(de)(de)(de)(de)。鋼鐵是(shi)(shi)機械(xie)工(gong)業(ye)中(zhong)應用(yong)(yong) 廣的(de)(de)(de)(de)(de)材料(liao)(liao),鋼鐵顯(xian)微組織(zhi)復雜,可(ke)以(yi)通(tong)過(guo)(guo)熱處理(li)(li)予(yu)以(yi)控制(zhi)(zhi),所以(yi)鋼鐵的(de)(de)(de)(de)(de)熱處理(li)(li)是(shi)(shi)金屬熱處理(li)(li)的(de)(de)(de)(de)(de)主(zhu)要內(nei)容。另外(wai),鋁、銅、鎂(mei)、鈦等及其合(he)金也都可(ke)以(yi)通(tong)過(guo)(guo)熱處理(li)(li)改(gai)變(bian)其力學(xue)、物理(li)(li)和化(hua)學(xue)性(xing)(xing)(xing)(xing)能(neng),以(yi)獲(huo)得不同(tong)的(de)(de)(de)(de)(de)使(shi)用(yong)(yong)性(xing)(xing)(xing)(xing)能(neng)。
整(zheng)(zheng)(zheng)(zheng)體(ti)熱(re)處(chu)理是對(dui)工件(jian)整(zheng)(zheng)(zheng)(zheng)體(ti)加(jia)熱(re),然后以適(shi)當的速度冷卻,以改變(bian)其整(zheng)(zheng)(zheng)(zheng)體(ti)力學(xue)性能(neng)的金屬熱(re)處(chu)理工藝。鋼鐵(tie)整(zheng)(zheng)(zheng)(zheng)體(ti)熱(re)處(chu)理大致有退火(huo)(huo)、正火(huo)(huo)、淬火(huo)(huo)和(he)回火(huo)(huo)四種基(ji)本工藝。