保溫爐是一(yi)臺(tai)容量可(ke)(ke)達600公(gong)斤的臥式有鐵芯工頻感應電(dian)爐(lu)(lu),為了便(bian)于控制爐(lu)(lu)內熔融金屬的溫度,可(ke)(ke)以采(cai)用調壓(ya)變(bian)壓(ya)器(qi)進行保(bao)溫,但這種(zhong)舊式設(she)備操(cao)作(zuo)麻煩,二來消耗電(dian)力多(duo),設(she)備占(zhan)用面積(ji)也大,采(cai)用可(ke)(ke)控硅交流調壓(ya)器(qi),操(cao)作(zuo)簡單(dan)便(bian)利,而且能(neng)節約用電(dian),一(yi)臺(tai)保(bao)溫爐(lu)(lu)比用調壓(ya)變(bian)壓(ya)器(qi)每晝夜可(ke)(ke)以節省300度電(dian),又能(neng)為生產(chan)自動化創造(zao)了條件(jian)。
另外(wai),由于(yu)升液(ye)(ye)(ye)管(guan)的(de)工作條件惡劣,鑄(zhu)(zhu)造科技工作者正在(zai)(zai)尋求更好的(de)材料(liao)和合理(li)(li)的(de)措(cuo)施(shi)以(yi)提高(gao)其(qi)壽(shou)命(ming)。現有(you)資料(liao)表(biao)明:采(cai)用(yong)(yong)(yong)含(han)磷2.7%的(de)鑄(zhu)(zhu)鐵(tie)、含(han)銅(tong)6.5%的(de)鑄(zhu)(zhu)鐵(tie)、高(gao)錳鑄(zhu)(zhu)鐵(tie)或用(yong)(yong)(yong)具有(you)D型石墨的(de)珠光體(ti)基體(ti)的(de)孕育鑄(zhu)(zhu)鐵(tie)鑄(zhu)(zhu)造升液(ye)(ye)(ye)管(guan),其(qi)壽(shou)命(ming)可(ke)能延長,可(ke)用(yong)(yong)(yong)120h以(yi)上;有(you)的(de)采(cai)用(yong)(yong)(yong)普(pu)通(tong)鑄(zhu)(zhu)鐵(tie)管(guan)進行表(biao)面滲硫處理(li)(li),在(zai)(zai)鋁(lv)液(ye)(ye)(ye)中(zhong)的(de)壽(shou)命(ming)約可(ke)提高(gao)3倍;有(you)的(de)在(zai)(zai)鑄(zhu)(zhu)鐵(tie)管(guan)表(biao)面噴鍍一層三氧(yang)化二鋁(lv)、氧(yang)化鋯或氧(yang)化鉻等材料(liao),升液(ye)(ye)(ye)管(guan)在(zai)(zai)鋁(lv)液(ye)(ye)(ye)中(zhong)的(de)壽(shou)命(ming)可(ke)達700h;有(you)的(de)試用(yong)(yong)(yong)氮化硅、碳化硅或氧(yang)化硼等耐(nai)熱(re)陶(tao)瓷作升液(ye)(ye)(ye)管(guan),雖(sui)然(ran)成本高(gao),但在(zai)(zai)鋁(lv)液(ye)(ye)(ye)中(zhong)可(ke)用(yong)(yong)(yong)半年以(yi)上;還有(you)用(yong)(yong)(yong)石棉耐(nai)熱(re)硅酸鹽作升液(ye)(ye)(ye)管(guan),在(zai)(zai)三班連續(xu)作業的(de)情況下,可(ke)使用(yong)(yong)(yong)4~5個月,效果良好。