保溫爐是一臺容量可達600公斤的(de)臥(wo)式有鐵芯工頻(pin)感應電(dian)(dian)(dian)爐(lu),為了(le)便(bian)于控制爐(lu)內熔融金屬(shu)的(de)溫(wen)度,可以(yi)采用(yong)調壓(ya)變(bian)(bian)壓(ya)器(qi)(qi)進行保溫(wen),但這種舊式設備操作(zuo)(zuo)麻煩(fan),二(er)來消(xiao)耗電(dian)(dian)(dian)力多,設備占(zhan)用(yong)面積(ji)也(ye)大,采用(yong)可控硅(gui)交流調壓(ya)器(qi)(qi),操作(zuo)(zuo)簡(jian)單便(bian)利,而且(qie)能(neng)節約用(yong)電(dian)(dian)(dian),一臺保溫(wen)爐(lu)比用(yong)調壓(ya)變(bian)(bian)壓(ya)器(qi)(qi)每晝(zhou)夜(ye)可以(yi)節省300度電(dian)(dian)(dian),又能(neng)為生(sheng)產(chan)自動(dong)化創造了(le)條件。
另外,由于升(sheng)液(ye)管(guan)的(de)工(gong)作條件(jian)惡劣,鑄造科(ke)技工(gong)作者(zhe)正在(zai)(zai)(zai)尋(xun)求更好的(de)材(cai)料(liao)和合理(li)的(de)措(cuo)施以提高其(qi)(qi)壽命(ming)(ming)。現(xian)有(you)資料(liao)表(biao)(biao)明:采(cai)用(yong)(yong)(yong)含(han)磷2.7%的(de)鑄鐵、含(han)銅6.5%的(de)鑄鐵、高錳(meng)鑄鐵或(huo)用(yong)(yong)(yong)具有(you)D型石(shi)墨的(de)珠光體基(ji)體的(de)孕(yun)育(yu)鑄鐵鑄造升(sheng)液(ye)管(guan),其(qi)(qi)壽命(ming)(ming)可(ke)能延(yan)長,可(ke)用(yong)(yong)(yong)120h以上;有(you)的(de)采(cai)用(yong)(yong)(yong)普通鑄鐵管(guan)進(jin)行表(biao)(biao)面(mian)滲硫處理(li),在(zai)(zai)(zai)鋁液(ye)中的(de)壽命(ming)(ming)約(yue)可(ke)提高3倍;有(you)的(de)在(zai)(zai)(zai)鑄鐵管(guan)表(biao)(biao)面(mian)噴鍍一層(ceng)三氧(yang)化(hua)二鋁、氧(yang)化(hua)鋯(gao)或(huo)氧(yang)化(hua)鉻等材(cai)料(liao),升(sheng)液(ye)管(guan)在(zai)(zai)(zai)鋁液(ye)中的(de)壽命(ming)(ming)可(ke)達700h;有(you)的(de)試(shi)用(yong)(yong)(yong)氮化(hua)硅(gui)、碳化(hua)硅(gui)或(huo)氧(yang)化(hua)硼等耐(nai)熱陶(tao)瓷作升(sheng)液(ye)管(guan),雖然成本高,但在(zai)(zai)(zai)鋁液(ye)中可(ke)用(yong)(yong)(yong)半年以上;還有(you)用(yong)(yong)(yong)石(shi)棉耐(nai)熱硅(gui)酸鹽(yan)作升(sheng)液(ye)管(guan),在(zai)(zai)(zai)三班連(lian)續作業的(de)情況下,可(ke)使用(yong)(yong)(yong)4~5個(ge)月(yue),效果良好。