保溫爐是一(yi)臺容量可(ke)達600公(gong)斤的臥式(shi)(shi)有鐵芯工(gong)頻感應電(dian)(dian)爐(lu),為了便(bian)于控(kong)制爐(lu)內熔融金屬的溫(wen)(wen)度,可(ke)以(yi)采用(yong)(yong)調(diao)壓(ya)變壓(ya)器進行保(bao)溫(wen)(wen),但這種舊式(shi)(shi)設備操作麻煩,二來消耗(hao)電(dian)(dian)力多,設備占用(yong)(yong)面積也大,采用(yong)(yong)可(ke)控(kong)硅(gui)交(jiao)流調(diao)壓(ya)器,操作簡單便(bian)利,而且(qie)能節(jie)約(yue)用(yong)(yong)電(dian)(dian),一(yi)臺保(bao)溫(wen)(wen)爐(lu)比用(yong)(yong)調(diao)壓(ya)變壓(ya)器每晝夜可(ke)以(yi)節(jie)省300度電(dian)(dian),又能為生(sheng)產自動化創(chuang)造了條件。
另外(wai),由于升液(ye)管的(de)(de)(de)(de)工(gong)作(zuo)條件惡劣(lie),鑄(zhu)(zhu)造科(ke)技(ji)工(gong)作(zuo)者正在(zai)尋求更好的(de)(de)(de)(de)材(cai)料(liao)和合理的(de)(de)(de)(de)措施以提高(gao)其壽(shou)命(ming)。現有(you)(you)(you)資(zi)料(liao)表(biao)明:采用(yong)(yong)(yong)含磷2.7%的(de)(de)(de)(de)鑄(zhu)(zhu)鐵、含銅6.5%的(de)(de)(de)(de)鑄(zhu)(zhu)鐵、高(gao)錳鑄(zhu)(zhu)鐵或(huo)用(yong)(yong)(yong)具有(you)(you)(you)D型石墨的(de)(de)(de)(de)珠光體(ti)基體(ti)的(de)(de)(de)(de)孕育鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造升液(ye)管,其壽(shou)命(ming)可(ke)(ke)能延(yan)長,可(ke)(ke)用(yong)(yong)(yong)120h以上(shang);有(you)(you)(you)的(de)(de)(de)(de)采用(yong)(yong)(yong)普通鑄(zhu)(zhu)鐵管進行表(biao)面滲硫處理,在(zai)鋁(lv)(lv)液(ye)中的(de)(de)(de)(de)壽(shou)命(ming)約(yue)可(ke)(ke)提高(gao)3倍;有(you)(you)(you)的(de)(de)(de)(de)在(zai)鑄(zhu)(zhu)鐵管表(biao)面噴(pen)鍍一層三(san)氧化(hua)二鋁(lv)(lv)、氧化(hua)鋯或(huo)氧化(hua)鉻等材(cai)料(liao),升液(ye)管在(zai)鋁(lv)(lv)液(ye)中的(de)(de)(de)(de)壽(shou)命(ming)可(ke)(ke)達700h;有(you)(you)(you)的(de)(de)(de)(de)試用(yong)(yong)(yong)氮化(hua)硅、碳化(hua)硅或(huo)氧化(hua)硼等耐熱陶瓷(ci)作(zuo)升液(ye)管,雖然(ran)成本高(gao),但在(zai)鋁(lv)(lv)液(ye)中可(ke)(ke)用(yong)(yong)(yong)半(ban)年以上(shang);還有(you)(you)(you)用(yong)(yong)(yong)石棉耐熱硅酸鹽作(zuo)升液(ye)管,在(zai)三(san)班連續作(zuo)業的(de)(de)(de)(de)情況下,可(ke)(ke)使用(yong)(yong)(yong)4~5個月,效果良好。