保溫爐是(shi)一臺容量可(ke)達600公斤的臥式有鐵芯工頻感應電(dian)爐,為了便于控(kong)制爐內熔融(rong)金屬的溫(wen)度,可(ke)以(yi)采用(yong)(yong)調壓變(bian)壓器(qi)進行(xing)保(bao)溫(wen),但這種舊式設(she)備操作(zuo)麻煩,二來消(xiao)耗電(dian)力多,設(she)備占(zhan)用(yong)(yong)面(mian)積也大,采用(yong)(yong)可(ke)控(kong)硅交流(liu)調壓器(qi),操作(zuo)簡(jian)單便利,而且(qie)能(neng)(neng)節約用(yong)(yong)電(dian),一臺保(bao)溫(wen)爐比(bi)用(yong)(yong)調壓變(bian)壓器(qi)每晝夜可(ke)以(yi)節省300度電(dian),又能(neng)(neng)為生產自動化創造(zao)了條件(jian)。
另(ling)外,由于升(sheng)(sheng)液(ye)管(guan)(guan)的(de)(de)(de)(de)工(gong)(gong)作(zuo)(zuo)條(tiao)件惡劣,鑄(zhu)造(zao)科技工(gong)(gong)作(zuo)(zuo)者正在(zai)(zai)尋(xun)求(qiu)更(geng)好(hao)的(de)(de)(de)(de)材料(liao)和(he)合(he)理的(de)(de)(de)(de)措(cuo)施以提高其(qi)壽命(ming)。現有(you)資料(liao)表明(ming):采用(yong)(yong)(yong)含(han)磷(lin)2.7%的(de)(de)(de)(de)鑄(zhu)鐵(tie)、含(han)銅6.5%的(de)(de)(de)(de)鑄(zhu)鐵(tie)、高錳(meng)鑄(zhu)鐵(tie)或(huo)用(yong)(yong)(yong)具有(you)D型石墨的(de)(de)(de)(de)珠光(guang)體基體的(de)(de)(de)(de)孕育鑄(zhu)鐵(tie)鑄(zhu)造(zao)升(sheng)(sheng)液(ye)管(guan)(guan),其(qi)壽命(ming)可(ke)能延長,可(ke)用(yong)(yong)(yong)120h以上;有(you)的(de)(de)(de)(de)采用(yong)(yong)(yong)普通(tong)鑄(zhu)鐵(tie)管(guan)(guan)進(jin)行表面滲硫(liu)處理,在(zai)(zai)鋁(lv)(lv)液(ye)中的(de)(de)(de)(de)壽命(ming)約可(ke)提高3倍(bei);有(you)的(de)(de)(de)(de)在(zai)(zai)鑄(zhu)鐵(tie)管(guan)(guan)表面噴(pen)鍍一層三(san)氧(yang)(yang)化(hua)(hua)(hua)(hua)二鋁(lv)(lv)、氧(yang)(yang)化(hua)(hua)(hua)(hua)鋯或(huo)氧(yang)(yang)化(hua)(hua)(hua)(hua)鉻(ge)等材料(liao),升(sheng)(sheng)液(ye)管(guan)(guan)在(zai)(zai)鋁(lv)(lv)液(ye)中的(de)(de)(de)(de)壽命(ming)可(ke)達700h;有(you)的(de)(de)(de)(de)試用(yong)(yong)(yong)氮化(hua)(hua)(hua)(hua)硅、碳(tan)化(hua)(hua)(hua)(hua)硅或(huo)氧(yang)(yang)化(hua)(hua)(hua)(hua)硼等耐熱(re)陶(tao)瓷作(zuo)(zuo)升(sheng)(sheng)液(ye)管(guan)(guan),雖然成本高,但在(zai)(zai)鋁(lv)(lv)液(ye)中可(ke)用(yong)(yong)(yong)半年以上;還有(you)用(yong)(yong)(yong)石棉(mian)耐熱(re)硅酸鹽(yan)作(zuo)(zuo)升(sheng)(sheng)液(ye)管(guan)(guan),在(zai)(zai)三(san)班連續(xu)作(zuo)(zuo)業的(de)(de)(de)(de)情況下,可(ke)使用(yong)(yong)(yong)4~5個月,效(xiao)果良好(hao)。