保溫爐是一(yi)臺容量可達600公(gong)斤的臥式(shi)有(you)鐵(tie)芯工頻(pin)感應(ying)電(dian)爐，為了便(bian)于控制爐內熔融金屬的溫度，可以(yi)采用(yong)調(diao)(diao)壓(ya)(ya)(ya)變壓(ya)(ya)(ya)器進行保(bao)溫，但這種舊式(shi)設(she)備(bei)操(cao)作麻煩，二(er)來(lai)消耗電(dian)力多，設(she)備(bei)占用(yong)面積也大(da)，采用(yong)可控硅交(jiao)流調(diao)(diao)壓(ya)(ya)(ya)器，操(cao)作簡單便(bian)利(li)，而且能節約(yue)用(yong)電(dian)，一(yi)臺保(bao)溫爐比用(yong)調(diao)(diao)壓(ya)(ya)(ya)變壓(ya)(ya)(ya)器每晝夜可以(yi)節省300度電(dian)，又能為生(sheng)產(chan)自動(dong)化(hua)創造了條件。

        另(ling)外，由(you)于(yu)升液(ye)(ye)(ye)管(guan)的(de)(de)(de)工(gong)作(zuo)條件惡(e)劣，鑄(zhu)(zhu)(zhu)(zhu)造科技工(gong)作(zuo)者正在尋求更好的(de)(de)(de)材料和合理的(de)(de)(de)措施以(yi)提高其壽命。現有資料表明(ming)：采用(yong)(yong)(yong)(yong)含磷2．7%的(de)(de)(de)鑄(zhu)(zhu)(zhu)(zhu)鐵、含銅6．5%的(de)(de)(de)鑄(zhu)(zhu)(zhu)(zhu)鐵、高錳鑄(zhu)(zhu)(zhu)(zhu)鐵或用(yong)(yong)(yong)(yong)具有D型石(shi)墨的(de)(de)(de)珠光體基體的(de)(de)(de)孕育鑄(zhu)(zhu)(zhu)(zhu)鐵鑄(zhu)(zhu)(zhu)(zhu)造升液(ye)(ye)(ye)管(guan)，其壽命可(ke)(ke)能延長，可(ke)(ke)用(yong)(yong)(yong)(yong)120h以(yi)上；有的(de)(de)(de)采用(yong)(yong)(yong)(yong)普通鑄(zhu)(zhu)(zhu)(zhu)鐵管(guan)進(jin)行表面(mian)滲硫(liu)處理，在鋁(lv)液(ye)(ye)(ye)中(zhong)(zhong)的(de)(de)(de)壽命約(yue)可(ke)(ke)提高3倍；有的(de)(de)(de)在鑄(zhu)(zhu)(zhu)(zhu)鐵管(guan)表面(mian)噴鍍一層三氧(yang)(yang)化二(er)鋁(lv)、氧(yang)(yang)化鋯或氧(yang)(yang)化鉻等材料，升液(ye)(ye)(ye)管(guan)在鋁(lv)液(ye)(ye)(ye)中(zhong)(zhong)的(de)(de)(de)壽命可(ke)(ke)達700h；有的(de)(de)(de)試用(yong)(yong)(yong)(yong)氮化硅(gui)、碳化硅(gui)或氧(yang)(yang)化硼(peng)等耐熱陶瓷作(zuo)升液(ye)(ye)(ye)管(guan)，雖然成(cheng)本高，但在鋁(lv)液(ye)(ye)(ye)中(zhong)(zhong)可(ke)(ke)用(yong)(yong)(yong)(yong)半年以(yi)上；還有用(yong)(yong)(yong)(yong)石(shi)棉(mian)耐熱硅(gui)酸鹽(yan)作(zuo)升液(ye)(ye)(ye)管(guan)，在三班連續作(zuo)業的(de)(de)(de)情況下，可(ke)(ke)使用(yong)(yong)(yong)(yong)4～5個月，效果良(liang)好。