保溫爐是一臺容量可達600公斤(jin)的臥(wo)式有鐵(tie)芯工頻感應電(dian)(dian)爐,為(wei)了(le)便(bian)于控制爐內熔融(rong)金屬的溫(wen)(wen)度,可以采用(yong)調壓變壓器(qi)進行保溫(wen)(wen),但這種(zhong)舊式設備(bei)操作(zuo)麻煩(fan),二來消耗(hao)電(dian)(dian)力多,設備(bei)占用(yong)面積也大,采用(yong)可控硅交流(liu)調壓器(qi),操作(zuo)簡單(dan)便(bian)利,而且能節約用(yong)電(dian)(dian),一臺保溫(wen)(wen)爐比用(yong)調壓變壓器(qi)每晝夜(ye)可以節省300度電(dian)(dian),又能為(wei)生(sheng)產自(zi)動化創造了(le)條件(jian)。
另外,由(you)于(yu)升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)的(de)工(gong)作(zuo)(zuo)條件(jian)惡劣,鑄(zhu)(zhu)(zhu)造(zao)科技工(gong)作(zuo)(zuo)者正在(zai)(zai)尋求(qiu)更(geng)好的(de)材料(liao)和合(he)理(li)的(de)措施以提(ti)高(gao)其壽(shou)命(ming)。現有資料(liao)表(biao)明:采用(yong)(yong)(yong)(yong)含磷2.7%的(de)鑄(zhu)(zhu)(zhu)鐵、含銅6.5%的(de)鑄(zhu)(zhu)(zhu)鐵、高(gao)錳鑄(zhu)(zhu)(zhu)鐵或(huo)用(yong)(yong)(yong)(yong)具有D型石墨(mo)的(de)珠(zhu)光(guang)體(ti)基體(ti)的(de)孕(yun)育鑄(zhu)(zhu)(zhu)鐵鑄(zhu)(zhu)(zhu)造(zao)升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan),其壽(shou)命(ming)可(ke)能延長,可(ke)用(yong)(yong)(yong)(yong)120h以上;有的(de)采用(yong)(yong)(yong)(yong)普通鑄(zhu)(zhu)(zhu)鐵管(guan)(guan)進行表(biao)面滲(shen)硫(liu)處理(li),在(zai)(zai)鋁液(ye)(ye)中(zhong)(zhong)的(de)壽(shou)命(ming)約可(ke)提(ti)高(gao)3倍;有的(de)在(zai)(zai)鑄(zhu)(zhu)(zhu)鐵管(guan)(guan)表(biao)面噴鍍(du)一層三氧化(hua)二鋁、氧化(hua)鋯或(huo)氧化(hua)鉻等材料(liao),升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan)在(zai)(zai)鋁液(ye)(ye)中(zhong)(zhong)的(de)壽(shou)命(ming)可(ke)達700h;有的(de)試用(yong)(yong)(yong)(yong)氮化(hua)硅、碳(tan)化(hua)硅或(huo)氧化(hua)硼等耐(nai)熱(re)陶瓷作(zuo)(zuo)升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan),雖然成本高(gao),但在(zai)(zai)鋁液(ye)(ye)中(zhong)(zhong)可(ke)用(yong)(yong)(yong)(yong)半年(nian)以上;還有用(yong)(yong)(yong)(yong)石棉耐(nai)熱(re)硅酸(suan)鹽作(zuo)(zuo)升(sheng)(sheng)(sheng)液(ye)(ye)管(guan)(guan),在(zai)(zai)三班(ban)連續作(zuo)(zuo)業的(de)情況下(xia),可(ke)使用(yong)(yong)(yong)(yong)4~5個月,效果良好。