保溫爐是一(yi)臺容量(liang)可(ke)(ke)達600公斤的臥式有鐵芯工頻感(gan)應電(dian)(dian)爐(lu)，為(wei)了便于控制爐(lu)內熔融金屬的溫度，可(ke)(ke)以(yi)采用(yong)(yong)(yong)調壓(ya)(ya)變壓(ya)(ya)器進(jin)行保溫，但這種舊式設(she)(she)備操作麻煩(fan)，二來消(xiao)耗電(dian)(dian)力多，設(she)(she)備占用(yong)(yong)(yong)面積也大，采用(yong)(yong)(yong)可(ke)(ke)控硅交流(liu)調壓(ya)(ya)器，操作簡單便利，而且能(neng)節約用(yong)(yong)(yong)電(dian)(dian)，一(yi)臺保溫爐(lu)比用(yong)(yong)(yong)調壓(ya)(ya)變壓(ya)(ya)器每晝(zhou)夜可(ke)(ke)以(yi)節省300度電(dian)(dian)，又能(neng)為(wei)生產自(zi)動化(hua)創造了條(tiao)件(jian)。

        另(ling)外，由(you)于升液(ye)(ye)管(guan)(guan)的(de)(de)(de)工作條件(jian)惡劣，鑄(zhu)造科技工作者正在尋求更好的(de)(de)(de)材料(liao)(liao)和合理(li)的(de)(de)(de)措施以(yi)提高其壽命(ming)。現有(you)資料(liao)(liao)表(biao)明：采用(yong)(yong)(yong)(yong)含磷2．7%的(de)(de)(de)鑄(zhu)鐵(tie)、含銅6．5%的(de)(de)(de)鑄(zhu)鐵(tie)、高錳(meng)鑄(zhu)鐵(tie)或用(yong)(yong)(yong)(yong)具有(you)D型(xing)石墨的(de)(de)(de)珠光體基(ji)體的(de)(de)(de)孕育鑄(zhu)鐵(tie)鑄(zhu)造升液(ye)(ye)管(guan)(guan)，其壽命(ming)可能延長，可用(yong)(yong)(yong)(yong)120h以(yi)上；有(you)的(de)(de)(de)采用(yong)(yong)(yong)(yong)普通鑄(zhu)鐵(tie)管(guan)(guan)進行表(biao)面(mian)(mian)滲硫(liu)處(chu)理(li)，在鋁液(ye)(ye)中(zhong)的(de)(de)(de)壽命(ming)約可提高3倍；有(you)的(de)(de)(de)在鑄(zhu)鐵(tie)管(guan)(guan)表(biao)面(mian)(mian)噴(pen)鍍一層三氧(yang)化(hua)(hua)二(er)鋁、氧(yang)化(hua)(hua)鋯或氧(yang)化(hua)(hua)鉻等材料(liao)(liao)，升液(ye)(ye)管(guan)(guan)在鋁液(ye)(ye)中(zhong)的(de)(de)(de)壽命(ming)可達(da)700h；有(you)的(de)(de)(de)試用(yong)(yong)(yong)(yong)氮化(hua)(hua)硅(gui)、碳化(hua)(hua)硅(gui)或氧(yang)化(hua)(hua)硼等耐(nai)(nai)熱(re)陶瓷作升液(ye)(ye)管(guan)(guan)，雖然(ran)成本高，但(dan)在鋁液(ye)(ye)中(zhong)可用(yong)(yong)(yong)(yong)半年以(yi)上；還有(you)用(yong)(yong)(yong)(yong)石棉耐(nai)(nai)熱(re)硅(gui)酸鹽作升液(ye)(ye)管(guan)(guan)，在三班連續作業的(de)(de)(de)情況下，可使用(yong)(yong)(yong)(yong)4～5個(ge)月，效果良(liang)好。