保溫爐是(shi)一(yi)臺容量可(ke)達600公(gong)斤的臥式(shi)有鐵芯工頻感應電(dian)爐,為(wei)了便于控制爐內熔融金屬的溫度,可(ke)以采(cai)(cai)用(yong)(yong)調(diao)(diao)壓變壓器進行保溫,但這種舊式(shi)設(she)備操(cao)作麻煩(fan),二來(lai)消(xiao)耗電(dian)力多,設(she)備占(zhan)用(yong)(yong)面積也大(da),采(cai)(cai)用(yong)(yong)可(ke)控硅交流調(diao)(diao)壓器,操(cao)作簡單便利,而且能(neng)節約用(yong)(yong)電(dian),一(yi)臺保溫爐比(bi)用(yong)(yong)調(diao)(diao)壓變壓器每晝夜可(ke)以節省300度電(dian),又能(neng)為(wei)生(sheng)產(chan)自動化創造了條件。
另外,由于升(sheng)(sheng)液(ye)(ye)管(guan)的(de)(de)工作條件惡劣(lie),鑄(zhu)(zhu)造(zao)科技(ji)工作者正在(zai)(zai)尋求更好(hao)的(de)(de)材(cai)料(liao)(liao)和(he)合理的(de)(de)措施以(yi)提高(gao)其(qi)壽(shou)命(ming)(ming)。現有資料(liao)(liao)表明:采用(yong)(yong)含磷2.7%的(de)(de)鑄(zhu)(zhu)鐵、含銅6.5%的(de)(de)鑄(zhu)(zhu)鐵、高(gao)錳鑄(zhu)(zhu)鐵或用(yong)(yong)具有D型石墨的(de)(de)珠光體基體的(de)(de)孕育鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造(zao)升(sheng)(sheng)液(ye)(ye)管(guan),其(qi)壽(shou)命(ming)(ming)可(ke)(ke)(ke)能(neng)延長,可(ke)(ke)(ke)用(yong)(yong)120h以(yi)上;有的(de)(de)采用(yong)(yong)普通(tong)鑄(zhu)(zhu)鐵管(guan)進行表面(mian)滲硫處理,在(zai)(zai)鋁(lv)液(ye)(ye)中(zhong)的(de)(de)壽(shou)命(ming)(ming)約(yue)可(ke)(ke)(ke)提高(gao)3倍;有的(de)(de)在(zai)(zai)鑄(zhu)(zhu)鐵管(guan)表面(mian)噴鍍一層三(san)氧化二鋁(lv)、氧化鋯或氧化鉻(ge)等材(cai)料(liao)(liao),升(sheng)(sheng)液(ye)(ye)管(guan)在(zai)(zai)鋁(lv)液(ye)(ye)中(zhong)的(de)(de)壽(shou)命(ming)(ming)可(ke)(ke)(ke)達700h;有的(de)(de)試用(yong)(yong)氮化硅(gui)、碳(tan)化硅(gui)或氧化硼等耐(nai)(nai)熱陶瓷作升(sheng)(sheng)液(ye)(ye)管(guan),雖然成本(ben)高(gao),但在(zai)(zai)鋁(lv)液(ye)(ye)中(zhong)可(ke)(ke)(ke)用(yong)(yong)半年以(yi)上;還有用(yong)(yong)石棉耐(nai)(nai)熱硅(gui)酸鹽作升(sheng)(sheng)液(ye)(ye)管(guan),在(zai)(zai)三(san)班連續作業(ye)的(de)(de)情況下,可(ke)(ke)(ke)使用(yong)(yong)4~5個月,效(xiao)果良(liang)好(hao)。