保溫爐是一臺容量可達600公(gong)斤的臥式有鐵芯工(gong)頻感應電爐,為了(le)便(bian)于控制爐內熔融金屬的溫(wen)度,可以采(cai)用(yong)調壓(ya)(ya)變(bian)壓(ya)(ya)器(qi)進行保溫(wen),但(dan)這種舊式設(she)備(bei)操(cao)作麻煩,二來消(xiao)耗電力多,設(she)備(bei)占用(yong)面積(ji)也大,采(cai)用(yong)可控硅(gui)交流調壓(ya)(ya)器(qi),操(cao)作簡單便(bian)利,而且能(neng)(neng)節約用(yong)電,一臺保溫(wen)爐比用(yong)調壓(ya)(ya)變(bian)壓(ya)(ya)器(qi)每(mei)晝夜可以節省300度電,又(you)能(neng)(neng)為生產(chan)自(zi)動化創造了(le)條件。
另外,由于升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)的(de)工作(zuo)條件惡劣,鑄(zhu)(zhu)(zhu)造科技工作(zuo)者(zhe)正在(zai)尋求更好的(de)材料和合(he)理的(de)措施以提高(gao)其壽(shou)命(ming)。現有(you)資料表明: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(you)D型石(shi)墨的(de)珠光體基體的(de)孕(yun)育鑄(zhu)(zhu)(zhu)鐵鑄(zhu)(zhu)(zhu)造升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan),其壽(shou)命(ming)可能延長,可用(yong)(yong)(yong)(yong)120h以上(shang);有(you)的(de)采用(yong)(yong)(yong)(yong)普通鑄(zhu)(zhu)(zhu)鐵管(guan)(guan)(guan)進(jin)行表面(mian)滲硫處理,在(zai)鋁液(ye)(ye)(ye)中的(de)壽(shou)命(ming)約可提高(gao)3倍(bei);有(you)的(de)在(zai)鑄(zhu)(zhu)(zhu)鐵管(guan)(guan)(guan)表面(mian)噴鍍一層(ceng)三氧化(hua)(hua)二(er)鋁、氧化(hua)(hua)鋯(gao)或(huo)氧化(hua)(hua)鉻(ge)等材料,升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)在(zai)鋁液(ye)(ye)(ye)中的(de)壽(shou)命(ming)可達700h;有(you)的(de)試用(yong)(yong)(yong)(yong)氮(dan)化(hua)(hua)硅、碳化(hua)(hua)硅或(huo)氧化(hua)(hua)硼等耐熱陶(tao)瓷作(zuo)升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan),雖(sui)然成本高(gao),但在(zai)鋁液(ye)(ye)(ye)中可用(yong)(yong)(yong)(yong)半年以上(shang);還(huan)有(you)用(yong)(yong)(yong)(yong)石(shi)棉耐熱硅酸鹽作(zuo)升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan),在(zai)三班連續作(zuo)業的(de)情況下,可使用(yong)(yong)(yong)(yong)4~5個月(yue),效果良好。