保溫爐是一臺容(rong)量可(ke)達600公斤的(de)臥式有鐵芯工頻感應電(dian)爐,為(wei)了便于控制爐內(nei)熔融(rong)金屬的(de)溫(wen)(wen)度,可(ke)以采(cai)用調(diao)壓(ya)變壓(ya)器進行保溫(wen)(wen),但這種舊式設備操作麻煩,二(er)來消耗電(dian)力多,設備占(zhan)用面積也大,采(cai)用可(ke)控硅(gui)交流調(diao)壓(ya)器,操作簡單(dan)便利,而(er)且能節約用電(dian),一臺保溫(wen)(wen)爐比(bi)用調(diao)壓(ya)變壓(ya)器每晝夜可(ke)以節省300度電(dian),又能為(wei)生產(chan)自動化創造(zao)了條件。
另外,由于升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)(guan)的(de)工(gong)作(zuo)(zuo)條件惡劣,鑄(zhu)(zhu)(zhu)造科(ke)技(ji)工(gong)作(zuo)(zuo)者正在(zai)尋求(qiu)更好的(de)材料和合理(li)的(de)措(cuo)施(shi)以提高(gao)其(qi)壽(shou)(shou)命(ming)(ming)。現(xian)有(you)(you)資料表(biao)明(ming):采用(yong)(yong)含磷2.7%的(de)鑄(zhu)(zhu)(zhu)鐵(tie)、含銅(tong)6.5%的(de)鑄(zhu)(zhu)(zhu)鐵(tie)、高(gao)錳鑄(zhu)(zhu)(zhu)鐵(tie)或用(yong)(yong)具有(you)(you)D型石墨的(de)珠光(guang)體基體的(de)孕(yun)育鑄(zhu)(zhu)(zhu)鐵(tie)鑄(zhu)(zhu)(zhu)造升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)(guan),其(qi)壽(shou)(shou)命(ming)(ming)可(ke)(ke)能延長,可(ke)(ke)用(yong)(yong)120h以上(shang)(shang);有(you)(you)的(de)采用(yong)(yong)普通鑄(zhu)(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)進行表(biao)面滲硫處理(li),在(zai)鋁液(ye)(ye)中(zhong)(zhong)的(de)壽(shou)(shou)命(ming)(ming)約可(ke)(ke)提高(gao)3倍;有(you)(you)的(de)在(zai)鑄(zhu)(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)表(biao)面噴鍍一層三氧化二鋁、氧化鋯或氧化鉻等(deng)材料,升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)(guan)在(zai)鋁液(ye)(ye)中(zhong)(zhong)的(de)壽(shou)(shou)命(ming)(ming)可(ke)(ke)達(da)700h;有(you)(you)的(de)試用(yong)(yong)氮(dan)化硅、碳化硅或氧化硼等(deng)耐熱(re)陶瓷(ci)作(zuo)(zuo)升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)(guan),雖然(ran)成本高(gao),但在(zai)鋁液(ye)(ye)中(zhong)(zhong)可(ke)(ke)用(yong)(yong)半年以上(shang)(shang);還有(you)(you)用(yong)(yong)石棉耐熱(re)硅酸鹽作(zuo)(zuo)升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)(guan),在(zai)三班連續作(zuo)(zuo)業的(de)情況下,可(ke)(ke)使用(yong)(yong)4~5個月,效果良(liang)好。