保溫爐是一臺容量(liang)可達600公斤(jin)的臥式(shi)有鐵芯工頻感應電(dian)(dian)爐,為了(le)便于(yu)控制(zhi)爐內熔融(rong)金屬的溫度(du),可以(yi)采用(yong)調壓(ya)(ya)(ya)變壓(ya)(ya)(ya)器(qi)進行保溫,但這種舊式(shi)設備操(cao)作麻煩,二來消(xiao)耗電(dian)(dian)力多,設備占用(yong)面積(ji)也大,采用(yong)可控硅交流(liu)調壓(ya)(ya)(ya)器(qi),操(cao)作簡單便利,而(er)且能節(jie)約用(yong)電(dian)(dian),一臺保溫爐比用(yong)調壓(ya)(ya)(ya)變壓(ya)(ya)(ya)器(qi)每晝夜可以(yi)節(jie)省(sheng)300度(du)電(dian)(dian),又能為生產自(zi)動(dong)化創造了(le)條件。
另外,由于升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)工(gong)作條件惡劣,鑄(zhu)(zhu)造科(ke)技工(gong)作者正在(zai)尋(xun)求(qiu)更好(hao)的(de)(de)(de)(de)(de)材(cai)料和合理(li)的(de)(de)(de)(de)(de)措施以(yi)(yi)提(ti)高其壽命(ming)。現有資料表(biao)明:采用(yong)(yong)含磷(lin)2.7%的(de)(de)(de)(de)(de)鑄(zhu)(zhu)鐵、含銅(tong)6.5%的(de)(de)(de)(de)(de)鑄(zhu)(zhu)鐵、高錳鑄(zhu)(zhu)鐵或用(yong)(yong)具有D型石(shi)墨的(de)(de)(de)(de)(de)珠光體(ti)基體(ti)的(de)(de)(de)(de)(de)孕(yun)育鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)(guan),其壽命(ming)可能延長,可用(yong)(yong)120h以(yi)(yi)上(shang)(shang);有的(de)(de)(de)(de)(de)采用(yong)(yong)普(pu)通鑄(zhu)(zhu)鐵管(guan)(guan)(guan)(guan)進行(xing)表(biao)面滲硫處理(li),在(zai)鋁(lv)(lv)(lv)液(ye)(ye)(ye)中(zhong)的(de)(de)(de)(de)(de)壽命(ming)約可提(ti)高3倍(bei);有的(de)(de)(de)(de)(de)在(zai)鑄(zhu)(zhu)鐵管(guan)(guan)(guan)(guan)表(biao)面噴鍍一層(ceng)三氧化(hua)(hua)二鋁(lv)(lv)(lv)、氧化(hua)(hua)鋯或氧化(hua)(hua)鉻等(deng)材(cai)料,升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)(guan)在(zai)鋁(lv)(lv)(lv)液(ye)(ye)(ye)中(zhong)的(de)(de)(de)(de)(de)壽命(ming)可達700h;有的(de)(de)(de)(de)(de)試用(yong)(yong)氮化(hua)(hua)硅、碳化(hua)(hua)硅或氧化(hua)(hua)硼等(deng)耐熱(re)陶瓷作升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)(guan),雖(sui)然(ran)成本高,但在(zai)鋁(lv)(lv)(lv)液(ye)(ye)(ye)中(zhong)可用(yong)(yong)半年以(yi)(yi)上(shang)(shang);還有用(yong)(yong)石(shi)棉耐熱(re)硅酸鹽作升(sheng)液(ye)(ye)(ye)管(guan)(guan)(guan)(guan),在(zai)三班連續作業的(de)(de)(de)(de)(de)情況下,可使用(yong)(yong)4~5個月,效果良(liang)好(hao)。