冷拔方鋼定做 |
關鍵詞: |
對冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)進行熱(re)(re)處理,冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)淬硬(ying):是(shi)(shi)將(jiang)金屬均勻地(di)加(jia)熱(re)(re)至恰當溫度(du),然(ran)后迅速浸(jin)入水或油中(zhong)急冷(leng)(leng)(leng)(leng)(leng),或在空氣(qi)中(zhong)或冷(leng)(leng)(leng)(leng)(leng)凍區中(zhong)冷(leng)(leng)(leng)(leng)(leng)卻,使(shi)金冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)取(qu)得所需要的(de)(de)硬(ying)度(du)。冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)回(hui)火(huo)(huo):冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)淬硬(ying)后會變(bian)脆,一(yi)起由(you)淬火(huo)(huo)急冷(leng)(leng)(leng)(leng)(leng)而(er)引致的(de)(de)應力,可使(shi)冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)件遭到輕擊(ji)而(er)斷裂(lie)。冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)要消除脆性(xing)(xing),可用(yong)回(hui)火(huo)(huo)處理法(fa)(fa)。回(hui)火(huo)(huo)就是(shi)(shi)將(jiang)鋼(gang)(gang)(gang)(gang)(gang)件從頭加(jia)熱(re)(re)至恰當的(de)(de)溫度(du)或色(se)彩(cai),然(ran)后予(yu)以急冷(leng)(leng)(leng)(leng)(leng)。回(hui)火(huo)(huo)盡管使(shi)冷(leng)(leng)(leng)(leng)(leng)拉方(fang)鋼(gang)(gang)(gang)(gang)(gang)的(de)(de)硬(ying)度(du)略為削減(jian),但可添加(jia)冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)的(de)(de)韌性(xing)(xing)而(er)降低其脆性(xing)(xing)。冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)退(tui)火(huo)(huo):冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)退(tui)火(huo)(huo)是(shi)(shi)消除冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)件的(de)(de)內涵(han)應力和勒(le)化鋼(gang)(gang)(gang)(gang)(gang)件的(de)(de)辦(ban)法(fa)(fa)。冷(leng)(leng)(leng)(leng)(leng)拔(ba)(ba)(ba)(ba)方(fang)鋼(gang)(gang)(gang)(gang)(gang)定(ding)(ding)(ding)做(zuo)(zuo)(zuo)(zuo)退(tui)火(huo)(huo)法(fa)(fa)是(shi)(shi)將(jiang)鋼(gang)(gang)(gang)(gang)(gang)件加(jia)熱(re)(re)至高于(yu)臨界溫度(du),然(ran)后放入干灰,石灰,石棉或封閉在爐(lu)內,令它(ta)漸(jian)漸(jian)冷(leng)(leng)(leng)(leng)(leng)卻。 |
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