保溫爐是一(yi)臺容量可達(da)600公斤的臥式有鐵芯工(gong)頻感應電爐,為了(le)便(bian)于控(kong)制(zhi)爐內(nei)熔融金屬的溫(wen)(wen)度,可以(yi)采用(yong)(yong)(yong)(yong)調(diao)(diao)壓變壓器進行保(bao)溫(wen)(wen),但(dan)這種舊(jiu)式設(she)備操(cao)作(zuo)麻煩,二來消耗(hao)電力多,設(she)備占用(yong)(yong)(yong)(yong)面積也大(da),采用(yong)(yong)(yong)(yong)可控(kong)硅交流調(diao)(diao)壓器,操(cao)作(zuo)簡單便(bian)利,而且能(neng)節(jie)約用(yong)(yong)(yong)(yong)電,一(yi)臺保(bao)溫(wen)(wen)爐比用(yong)(yong)(yong)(yong)調(diao)(diao)壓變壓器每晝夜可以(yi)節(jie)省(sheng)300度電,又能(neng)為生產自動化(hua)創(chuang)造了(le)條件。
另外(wai),由于升(sheng)液(ye)(ye)管(guan)(guan)的(de)(de)(de)工(gong)作(zuo)條件惡劣,鑄(zhu)造科技(ji)工(gong)作(zuo)者正在(zai)尋求(qiu)更好(hao)的(de)(de)(de)材料和合理(li)的(de)(de)(de)措(cuo)施以(yi)提(ti)高(gao)(gao)其(qi)壽命(ming)。現(xian)有(you)資料表明:采用(yong)含磷(lin)2.7%的(de)(de)(de)鑄(zhu)鐵、含銅6.5%的(de)(de)(de)鑄(zhu)鐵、高(gao)(gao)錳(meng)鑄(zhu)鐵或用(yong)具有(you)D型石墨的(de)(de)(de)珠光體(ti)基(ji)體(ti)的(de)(de)(de)孕育鑄(zhu)鐵鑄(zhu)造升(sheng)液(ye)(ye)管(guan)(guan),其(qi)壽命(ming)可(ke)(ke)(ke)能延長,可(ke)(ke)(ke)用(yong)120h以(yi)上(shang);有(you)的(de)(de)(de)采用(yong)普通鑄(zhu)鐵管(guan)(guan)進行(xing)表面滲硫處理(li),在(zai)鋁液(ye)(ye)中(zhong)(zhong)的(de)(de)(de)壽命(ming)約可(ke)(ke)(ke)提(ti)高(gao)(gao)3倍;有(you)的(de)(de)(de)在(zai)鑄(zhu)鐵管(guan)(guan)表面噴鍍(du)一層三氧化(hua)(hua)(hua)二鋁、氧化(hua)(hua)(hua)鋯或氧化(hua)(hua)(hua)鉻等(deng)材料,升(sheng)液(ye)(ye)管(guan)(guan)在(zai)鋁液(ye)(ye)中(zhong)(zhong)的(de)(de)(de)壽命(ming)可(ke)(ke)(ke)達(da)700h;有(you)的(de)(de)(de)試用(yong)氮化(hua)(hua)(hua)硅(gui)(gui)、碳化(hua)(hua)(hua)硅(gui)(gui)或氧化(hua)(hua)(hua)硼等(deng)耐熱(re)(re)陶瓷(ci)作(zuo)升(sheng)液(ye)(ye)管(guan)(guan),雖然成本高(gao)(gao),但在(zai)鋁液(ye)(ye)中(zhong)(zhong)可(ke)(ke)(ke)用(yong)半年以(yi)上(shang);還有(you)用(yong)石棉耐熱(re)(re)硅(gui)(gui)酸鹽(yan)作(zuo)升(sheng)液(ye)(ye)管(guan)(guan),在(zai)三班連續作(zuo)業的(de)(de)(de)情(qing)況下,可(ke)(ke)(ke)使用(yong)4~5個月,效(xiao)果良好(hao)。