保溫爐是一臺容量可(ke)(ke)達(da)600公斤的(de)臥式(shi)有鐵芯工(gong)頻感應電(dian)(dian)(dian)爐,為(wei)了便于控制爐內熔融(rong)金屬的(de)溫度(du),可(ke)(ke)以(yi)采用調(diao)壓(ya)變壓(ya)器(qi)進(jin)行保溫,但這種舊式(shi)設(she)備操作(zuo)麻煩,二來消耗電(dian)(dian)(dian)力多(duo),設(she)備占用面(mian)積也大,采用可(ke)(ke)控硅交流調(diao)壓(ya)器(qi),操作(zuo)簡(jian)單便利,而且能節(jie)約用電(dian)(dian)(dian),一臺保溫爐比(bi)用調(diao)壓(ya)變壓(ya)器(qi)每晝夜可(ke)(ke)以(yi)節(jie)省300度(du)電(dian)(dian)(dian),又能為(wei)生產自動(dong)化創造(zao)了條件。
另外,由于升(sheng)液管(guan)的(de)工(gong)作條件惡(e)劣,鑄(zhu)造(zao)科技工(gong)作者(zhe)正(zheng)在(zai)尋求更好的(de)材(cai)料和合理的(de)措施以提(ti)高其壽(shou)命(ming)(ming)。現有(you)(you)資料表明:采用(yong)(yong)(yong)含磷2.7%的(de)鑄(zhu)鐵(tie)、含銅(tong)6.5%的(de)鑄(zhu)鐵(tie)、高錳(meng)鑄(zhu)鐵(tie)或(huo)用(yong)(yong)(yong)具(ju)有(you)(you)D型石墨(mo)的(de)珠(zhu)光體基體的(de)孕育(yu)鑄(zhu)鐵(tie)鑄(zhu)造(zao)升(sheng)液管(guan),其壽(shou)命(ming)(ming)可(ke)(ke)能延(yan)長,可(ke)(ke)用(yong)(yong)(yong)120h以上;有(you)(you)的(de)采用(yong)(yong)(yong)普通鑄(zhu)鐵(tie)管(guan)進行表面(mian)滲硫(liu)處(chu)理,在(zai)鋁(lv)(lv)液中的(de)壽(shou)命(ming)(ming)約可(ke)(ke)提(ti)高3倍(bei);有(you)(you)的(de)在(zai)鑄(zhu)鐵(tie)管(guan)表面(mian)噴鍍一層三氧化(hua)(hua)二鋁(lv)(lv)、氧化(hua)(hua)鋯或(huo)氧化(hua)(hua)鉻等材(cai)料,升(sheng)液管(guan)在(zai)鋁(lv)(lv)液中的(de)壽(shou)命(ming)(ming)可(ke)(ke)達(da)700h;有(you)(you)的(de)試(shi)用(yong)(yong)(yong)氮化(hua)(hua)硅(gui)、碳化(hua)(hua)硅(gui)或(huo)氧化(hua)(hua)硼等耐熱陶(tao)瓷作升(sheng)液管(guan),雖然成本高,但(dan)在(zai)鋁(lv)(lv)液中可(ke)(ke)用(yong)(yong)(yong)半年以上;還(huan)有(you)(you)用(yong)(yong)(yong)石棉耐熱硅(gui)酸鹽作升(sheng)液管(guan),在(zai)三班連續作業的(de)情況下,可(ke)(ke)使用(yong)(yong)(yong)4~5個月,效(xiao)果良好。