保溫爐是一臺容量可達(da)600公斤的臥(wo)式有鐵芯工頻(pin)感應電爐(lu),為了便(bian)于控制爐(lu)內熔融金屬的溫度,可以(yi)采(cai)用(yong)(yong)調(diao)(diao)壓(ya)變(bian)壓(ya)器進行保溫,但(dan)這種舊式設(she)備操(cao)作麻煩(fan),二來消耗電力多(duo),設(she)備占(zhan)用(yong)(yong)面(mian)積也(ye)大,采(cai)用(yong)(yong)可控硅交流調(diao)(diao)壓(ya)器,操(cao)作簡(jian)單(dan)便(bian)利,而且能節約用(yong)(yong)電,一臺保溫爐(lu)比(bi)用(yong)(yong)調(diao)(diao)壓(ya)變(bian)壓(ya)器每晝(zhou)夜可以(yi)節省300度電,又能為生產自動化(hua)創(chuang)造了條件。
另外,由于升(sheng)液(ye)管(guan)的(de)(de)工(gong)作(zuo)(zuo)條件惡劣,鑄(zhu)造科技工(gong)作(zuo)(zuo)者正(zheng)在(zai)(zai)尋求更(geng)好(hao)的(de)(de)材料(liao)和(he)合(he)理的(de)(de)措施(shi)以(yi)(yi)提(ti)高其壽(shou)(shou)命。現有資料(liao)表明:采用(yong)(yong)含磷2.7%的(de)(de)鑄(zhu)鐵、含銅(tong)6.5%的(de)(de)鑄(zhu)鐵、高錳鑄(zhu)鐵或用(yong)(yong)具有D型石(shi)墨的(de)(de)珠光(guang)體(ti)基體(ti)的(de)(de)孕育鑄(zhu)鐵鑄(zhu)造升(sheng)液(ye)管(guan),其壽(shou)(shou)命可能延長(chang),可用(yong)(yong)120h以(yi)(yi)上;有的(de)(de)采用(yong)(yong)普通(tong)鑄(zhu)鐵管(guan)進(jin)行表面滲(shen)硫處(chu)理,在(zai)(zai)鋁液(ye)中(zhong)的(de)(de)壽(shou)(shou)命約可提(ti)高3倍;有的(de)(de)在(zai)(zai)鑄(zhu)鐵管(guan)表面噴(pen)鍍一層三氧(yang)(yang)化(hua)(hua)(hua)(hua)二鋁、氧(yang)(yang)化(hua)(hua)(hua)(hua)鋯或氧(yang)(yang)化(hua)(hua)(hua)(hua)鉻等(deng)材料(liao),升(sheng)液(ye)管(guan)在(zai)(zai)鋁液(ye)中(zhong)的(de)(de)壽(shou)(shou)命可達(da)700h;有的(de)(de)試用(yong)(yong)氮(dan)化(hua)(hua)(hua)(hua)硅、碳化(hua)(hua)(hua)(hua)硅或氧(yang)(yang)化(hua)(hua)(hua)(hua)硼(peng)等(deng)耐熱(re)陶(tao)瓷(ci)作(zuo)(zuo)升(sheng)液(ye)管(guan),雖然成本高,但在(zai)(zai)鋁液(ye)中(zhong)可用(yong)(yong)半年以(yi)(yi)上;還有用(yong)(yong)石(shi)棉耐熱(re)硅酸(suan)鹽(yan)作(zuo)(zuo)升(sheng)液(ye)管(guan),在(zai)(zai)三班連續作(zuo)(zuo)業的(de)(de)情況下(xia),可使用(yong)(yong)4~5個月(yue),效果(guo)良好(hao)。