保溫爐是一臺(tai)(tai)容量可(ke)達600公斤的(de)(de)臥式有鐵芯工頻感應電(dian)(dian)爐(lu),為了(le)(le)便于控(kong)制(zhi)爐(lu)內熔融(rong)金(jin)屬的(de)(de)溫度,可(ke)以采用(yong)調(diao)(diao)壓(ya)(ya)變(bian)壓(ya)(ya)器進行保(bao)溫,但這種舊式設備操(cao)作麻煩,二來消(xiao)耗電(dian)(dian)力多(duo),設備占用(yong)面(mian)積(ji)也大,采用(yong)可(ke)控(kong)硅(gui)交流(liu)調(diao)(diao)壓(ya)(ya)器,操(cao)作簡單(dan)便利,而且能(neng)節約用(yong)電(dian)(dian),一臺(tai)(tai)保(bao)溫爐(lu)比用(yong)調(diao)(diao)壓(ya)(ya)變(bian)壓(ya)(ya)器每晝夜可(ke)以節省300度電(dian)(dian),又能(neng)為生產(chan)自(zi)動化(hua)創造了(le)(le)條件。
另(ling)外(wai),由于(yu)升(sheng)液(ye)管(guan)(guan)的(de)(de)工作條(tiao)件惡劣,鑄造科技工作者正在(zai)尋求(qiu)更好的(de)(de)材料(liao)和合理的(de)(de)措(cuo)施(shi)以(yi)提高(gao)其(qi)壽(shou)(shou)命(ming)。現有(you)資料(liao)表明:采用(yong)(yong)含磷2.7%的(de)(de)鑄鐵、含銅6.5%的(de)(de)鑄鐵、高(gao)錳(meng)鑄鐵或(huo)用(yong)(yong)具(ju)有(you)D型石(shi)墨的(de)(de)珠光體基體的(de)(de)孕育鑄鐵鑄造升(sheng)液(ye)管(guan)(guan),其(qi)壽(shou)(shou)命(ming)可(ke)(ke)能延(yan)長,可(ke)(ke)用(yong)(yong)120h以(yi)上(shang);有(you)的(de)(de)采用(yong)(yong)普(pu)通鑄鐵管(guan)(guan)進(jin)行表面滲硫(liu)處理,在(zai)鋁(lv)液(ye)中(zhong)的(de)(de)壽(shou)(shou)命(ming)約(yue)可(ke)(ke)提高(gao)3倍;有(you)的(de)(de)在(zai)鑄鐵管(guan)(guan)表面噴鍍一層三氧(yang)(yang)化(hua)二鋁(lv)、氧(yang)(yang)化(hua)鋯或(huo)氧(yang)(yang)化(hua)鉻等(deng)材料(liao),升(sheng)液(ye)管(guan)(guan)在(zai)鋁(lv)液(ye)中(zhong)的(de)(de)壽(shou)(shou)命(ming)可(ke)(ke)達700h;有(you)的(de)(de)試(shi)用(yong)(yong)氮化(hua)硅、碳(tan)化(hua)硅或(huo)氧(yang)(yang)化(hua)硼等(deng)耐熱(re)陶瓷(ci)作升(sheng)液(ye)管(guan)(guan),雖然(ran)成本高(gao),但(dan)在(zai)鋁(lv)液(ye)中(zhong)可(ke)(ke)用(yong)(yong)半年(nian)以(yi)上(shang);還有(you)用(yong)(yong)石(shi)棉耐熱(re)硅酸鹽(yan)作升(sheng)液(ye)管(guan)(guan),在(zai)三班連續作業(ye)的(de)(de)情況下(xia),可(ke)(ke)使用(yong)(yong)4~5個(ge)月,效(xiao)果良(liang)好。