保溫爐是一臺容量可(ke)達600公斤的(de)臥(wo)式有鐵芯(xin)工頻(pin)感應電(dian)爐(lu)(lu),為(wei)了便于(yu)控(kong)制(zhi)爐(lu)(lu)內熔融金屬(shu)的(de)溫(wen)度(du),可(ke)以(yi)采用(yong)調壓(ya)變(bian)壓(ya)器(qi)進行保(bao)溫(wen),但這種舊式設備操作麻煩,二來消耗(hao)電(dian)力多,設備占用(yong)面積也大,采用(yong)可(ke)控(kong)硅(gui)交流調壓(ya)器(qi),操作簡單(dan)便利(li),而且能節(jie)約用(yong)電(dian),一臺保(bao)溫(wen)爐(lu)(lu)比用(yong)調壓(ya)變(bian)壓(ya)器(qi)每晝(zhou)夜可(ke)以(yi)節(jie)省300度(du)電(dian),又能為(wei)生(sheng)產自動化創造了條(tiao)件。
另外,由于升(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan)的工(gong)作(zuo)條件惡劣,鑄(zhu)(zhu)(zhu)造科(ke)技工(gong)作(zuo)者正(zheng)在尋(xun)求更(geng)好(hao)的材料和合理(li)的措(cuo)施以提高(gao)其壽命。現有(you)資料表明:采用(yong)含(han)磷2.7%的鑄(zhu)(zhu)(zhu)鐵(tie)、含(han)銅(tong)6.5%的鑄(zhu)(zhu)(zhu)鐵(tie)、高(gao)錳鑄(zhu)(zhu)(zhu)鐵(tie)或用(yong)具有(you)D型(xing)石(shi)墨的珠光體基體的孕(yun)育鑄(zhu)(zhu)(zhu)鐵(tie)鑄(zhu)(zhu)(zhu)造升(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan),其壽命可能延(yan)長,可用(yong)120h以上;有(you)的采用(yong)普(pu)通鑄(zhu)(zhu)(zhu)鐵(tie)管(guan)(guan)進行表面滲(shen)硫(liu)處理(li),在鋁(lv)(lv)液(ye)(ye)(ye)(ye)中(zhong)的壽命約可提高(gao)3倍;有(you)的在鑄(zhu)(zhu)(zhu)鐵(tie)管(guan)(guan)表面噴鍍一層(ceng)三(san)(san)氧(yang)化(hua)(hua)(hua)(hua)(hua)二鋁(lv)(lv)、氧(yang)化(hua)(hua)(hua)(hua)(hua)鋯或氧(yang)化(hua)(hua)(hua)(hua)(hua)鉻等(deng)材料,升(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan)在鋁(lv)(lv)液(ye)(ye)(ye)(ye)中(zhong)的壽命可達700h;有(you)的試用(yong)氮(dan)化(hua)(hua)(hua)(hua)(hua)硅(gui)、碳化(hua)(hua)(hua)(hua)(hua)硅(gui)或氧(yang)化(hua)(hua)(hua)(hua)(hua)硼等(deng)耐熱(re)陶(tao)瓷作(zuo)升(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan),雖然(ran)成本高(gao),但在鋁(lv)(lv)液(ye)(ye)(ye)(ye)中(zhong)可用(yong)半年(nian)以上;還有(you)用(yong)石(shi)棉耐熱(re)硅(gui)酸鹽作(zuo)升(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan),在三(san)(san)班連續作(zuo)業的情(qing)況(kuang)下(xia),可使(shi)用(yong)4~5個月,效果良好(hao)。