保溫爐是一臺(tai)容量可達600公斤的臥(wo)式(shi)有鐵芯工頻感應(ying)電(dian)爐,為(wei)了(le)便于控(kong)(kong)制爐內熔融金(jin)屬的溫度(du),可以采用(yong)(yong)調(diao)壓(ya)變(bian)壓(ya)器(qi)進行保(bao)溫,但這種舊式(shi)設備操作麻煩,二(er)來(lai)消耗電(dian)力多,設備占用(yong)(yong)面積也大,采用(yong)(yong)可控(kong)(kong)硅交流(liu)調(diao)壓(ya)器(qi),操作簡單便利,而且能(neng)節約用(yong)(yong)電(dian),一臺(tai)保(bao)溫爐比用(yong)(yong)調(diao)壓(ya)變(bian)壓(ya)器(qi)每晝夜(ye)可以節省300度(du)電(dian),又(you)能(neng)為(wei)生產自動化創造了(le)條件。
另外,由于升(sheng)液(ye)(ye)管(guan)(guan)(guan)(guan)的(de)(de)(de)工(gong)作條件惡劣,鑄(zhu)造(zao)科技工(gong)作者(zhe)正在(zai)(zai)尋求更好的(de)(de)(de)材料(liao)和(he)合(he)理的(de)(de)(de)措施以提高其壽(shou)命(ming)(ming)(ming)。現有資料(liao)表明:采用含磷2.7%的(de)(de)(de)鑄(zhu)鐵、含銅6.5%的(de)(de)(de)鑄(zhu)鐵、高錳鑄(zhu)鐵或(huo)(huo)用具有D型石墨的(de)(de)(de)珠光體基體的(de)(de)(de)孕(yun)育鑄(zhu)鐵鑄(zhu)造(zao)升(sheng)液(ye)(ye)管(guan)(guan)(guan)(guan),其壽(shou)命(ming)(ming)(ming)可(ke)能延長,可(ke)用120h以上;有的(de)(de)(de)采用普(pu)通鑄(zhu)鐵管(guan)(guan)(guan)(guan)進行表面滲(shen)硫處理,在(zai)(zai)鋁(lv)液(ye)(ye)中(zhong)(zhong)的(de)(de)(de)壽(shou)命(ming)(ming)(ming)約可(ke)提高3倍(bei);有的(de)(de)(de)在(zai)(zai)鑄(zhu)鐵管(guan)(guan)(guan)(guan)表面噴鍍一層(ceng)三氧化(hua)二(er)鋁(lv)、氧化(hua)鋯或(huo)(huo)氧化(hua)鉻等(deng)材料(liao),升(sheng)液(ye)(ye)管(guan)(guan)(guan)(guan)在(zai)(zai)鋁(lv)液(ye)(ye)中(zhong)(zhong)的(de)(de)(de)壽(shou)命(ming)(ming)(ming)可(ke)達(da)700h;有的(de)(de)(de)試用氮(dan)化(hua)硅、碳化(hua)硅或(huo)(huo)氧化(hua)硼等(deng)耐熱陶瓷作升(sheng)液(ye)(ye)管(guan)(guan)(guan)(guan),雖然成本(ben)高,但在(zai)(zai)鋁(lv)液(ye)(ye)中(zhong)(zhong)可(ke)用半(ban)年以上;還(huan)有用石棉(mian)耐熱硅酸鹽作升(sheng)液(ye)(ye)管(guan)(guan)(guan)(guan),在(zai)(zai)三班連續作業(ye)的(de)(de)(de)情況(kuang)下(xia),可(ke)使用4~5個月,效果良好。