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T 型(xing)槽(cao)鑄(zhu)鐵(tie)地(di)軌(gui)加(jia)工(gong)過(guo)程(cheng)中(zhong),需(xu)經(jing)過(guo)固(gu)溶(rong)處(chu)理(li)或(huo)淬(cui)火(huo),隨(sui)後(hou)在(zai)室(shi)溫(wen)或(huo)高(gao)於(yu)室(shi)溫(wen)的(de)適(shi)當(dang)溫(wen)度(du)下(xia)保(bao)溫(wen),以(yi)實(shi)現(xian)沉(chen)澱(dian)硬(ying)化(hua),這(zhe)一(yi)過(guo)程(cheng)稱(cheng)為(wei)時(shi)效(xiao)處(chu)理(li)。