保溫爐是一(yi)臺(tai)容量可達(da)600公斤(jin)的臥式(shi)有鐵芯工頻(pin)感(gan)應(ying)電爐,為了(le)便(bian)于控(kong)制爐內(nei)熔融(rong)金(jin)屬的溫(wen)度,可以采用(yong)(yong)(yong)調壓(ya)變壓(ya)器(qi)進行保(bao)溫(wen),但(dan)這種(zhong)舊式(shi)設(she)備操(cao)作麻煩(fan),二來(lai)消耗電力多,設(she)備占用(yong)(yong)(yong)面積(ji)也大,采用(yong)(yong)(yong)可控(kong)硅(gui)交流調壓(ya)器(qi),操(cao)作簡(jian)單便(bian)利,而(er)且能節約(yue)用(yong)(yong)(yong)電,一(yi)臺(tai)保(bao)溫(wen)爐比用(yong)(yong)(yong)調壓(ya)變壓(ya)器(qi)每晝夜可以節省300度電,又能為生(sheng)產(chan)自動化創(chuang)造了(le)條件(jian)。
另外,由于(yu)升(sheng)液(ye)(ye)(ye)(ye)管(guan)的工作條件(jian)惡劣,鑄(zhu)造科技工作者正在尋(xun)求更好(hao)的材(cai)料和合理(li)(li)的措施以(yi)(yi)提高(gao)其壽命(ming)。現有(you)(you)(you)資料表明:采用含(han)磷2.7%的鑄(zhu)鐵(tie)、含(han)銅6.5%的鑄(zhu)鐵(tie)、高(gao)錳鑄(zhu)鐵(tie)或用具有(you)(you)(you)D型(xing)石墨的珠(zhu)光體(ti)基體(ti)的孕育鑄(zhu)鐵(tie)鑄(zhu)造升(sheng)液(ye)(ye)(ye)(ye)管(guan),其壽命(ming)可能延長,可用120h以(yi)(yi)上;有(you)(you)(you)的采用普通(tong)鑄(zhu)鐵(tie)管(guan)進行(xing)表面滲硫處理(li)(li),在鋁(lv)液(ye)(ye)(ye)(ye)中(zhong)的壽命(ming)約可提高(gao)3倍(bei);有(you)(you)(you)的在鑄(zhu)鐵(tie)管(guan)表面噴鍍一層三氧(yang)(yang)化(hua)(hua)(hua)二(er)鋁(lv)、氧(yang)(yang)化(hua)(hua)(hua)鋯或氧(yang)(yang)化(hua)(hua)(hua)鉻等(deng)材(cai)料,升(sheng)液(ye)(ye)(ye)(ye)管(guan)在鋁(lv)液(ye)(ye)(ye)(ye)中(zhong)的壽命(ming)可達700h;有(you)(you)(you)的試用氮化(hua)(hua)(hua)硅、碳化(hua)(hua)(hua)硅或氧(yang)(yang)化(hua)(hua)(hua)硼等(deng)耐(nai)熱(re)陶(tao)瓷作升(sheng)液(ye)(ye)(ye)(ye)管(guan),雖然成本高(gao),但在鋁(lv)液(ye)(ye)(ye)(ye)中(zhong)可用半(ban)年以(yi)(yi)上;還有(you)(you)(you)用石棉(mian)耐(nai)熱(re)硅酸鹽作升(sheng)液(ye)(ye)(ye)(ye)管(guan),在三班連續作業的情況下,可使用4~5個(ge)月,效果良好(hao)。