保溫爐是一(yi)臺(tai)容量可(ke)達600公斤的臥式有鐵芯工頻感(gan)應電(dian)爐(lu)(lu),為了(le)便于控(kong)制爐(lu)(lu)內熔融金(jin)屬的溫度(du)(du),可(ke)以(yi)(yi)采(cai)用(yong)調壓(ya)變壓(ya)器進行(xing)保溫,但這種舊(jiu)式設(she)備操作(zuo)麻煩,二來消(xiao)耗電(dian)力(li)多(duo),設(she)備占用(yong)面積也大,采(cai)用(yong)可(ke)控(kong)硅交(jiao)流調壓(ya)器,操作(zuo)簡單便利,而且能(neng)節約用(yong)電(dian),一(yi)臺(tai)保溫爐(lu)(lu)比(bi)用(yong)調壓(ya)變壓(ya)器每晝夜可(ke)以(yi)(yi)節省300度(du)(du)電(dian),又能(neng)為生產自(zi)動化創(chuang)造(zao)了(le)條件。
另外,由于升(sheng)(sheng)(sheng)液(ye)管(guan)的(de)(de)(de)工(gong)作(zuo)條件惡(e)劣,鑄造(zao)科技工(gong)作(zuo)者正在(zai)(zai)尋求更好的(de)(de)(de)材料和合理(li)的(de)(de)(de)措(cuo)施以(yi)提高其壽命(ming)。現有(you)(you)資料表明:采(cai)用(yong)(yong)(yong)(yong)含(han)磷(lin)2.7%的(de)(de)(de)鑄鐵、含(han)銅6.5%的(de)(de)(de)鑄鐵、高錳鑄鐵或(huo)(huo)用(yong)(yong)(yong)(yong)具有(you)(you)D型石墨(mo)的(de)(de)(de)珠(zhu)光(guang)體基體的(de)(de)(de)孕育鑄鐵鑄造(zao)升(sheng)(sheng)(sheng)液(ye)管(guan),其壽命(ming)可能(neng)延長,可用(yong)(yong)(yong)(yong)120h以(yi)上(shang);有(you)(you)的(de)(de)(de)采(cai)用(yong)(yong)(yong)(yong)普(pu)通鑄鐵管(guan)進行表面滲(shen)硫處理(li),在(zai)(zai)鋁(lv)液(ye)中的(de)(de)(de)壽命(ming)約可提高3倍;有(you)(you)的(de)(de)(de)在(zai)(zai)鑄鐵管(guan)表面噴鍍一層(ceng)三氧化(hua)(hua)二鋁(lv)、氧化(hua)(hua)鋯或(huo)(huo)氧化(hua)(hua)鉻(ge)等材料,升(sheng)(sheng)(sheng)液(ye)管(guan)在(zai)(zai)鋁(lv)液(ye)中的(de)(de)(de)壽命(ming)可達700h;有(you)(you)的(de)(de)(de)試(shi)用(yong)(yong)(yong)(yong)氮化(hua)(hua)硅、碳化(hua)(hua)硅或(huo)(huo)氧化(hua)(hua)硼等耐熱陶(tao)瓷作(zuo)升(sheng)(sheng)(sheng)液(ye)管(guan),雖然成本高,但(dan)在(zai)(zai)鋁(lv)液(ye)中可用(yong)(yong)(yong)(yong)半年以(yi)上(shang);還有(you)(you)用(yong)(yong)(yong)(yong)石棉耐熱硅酸鹽作(zuo)升(sheng)(sheng)(sheng)液(ye)管(guan),在(zai)(zai)三班連續作(zuo)業的(de)(de)(de)情(qing)況下,可使用(yong)(yong)(yong)(yong)4~5個月(yue),效果良好。