保溫爐是一臺容(rong)量可達(da)600公斤的臥(wo)式有鐵(tie)芯工頻感(gan)應電(dian)(dian)爐,為了便于控制(zhi)爐內(nei)熔融金屬的溫(wen)度,可以采用調壓(ya)(ya)變(bian)(bian)壓(ya)(ya)器(qi)進行保溫(wen),但這種舊式設(she)備操作麻煩,二來(lai)消耗(hao)電(dian)(dian)力多,設(she)備占用面積也(ye)大,采用可控硅交流(liu)調壓(ya)(ya)器(qi),操作簡(jian)單便利,而且能節(jie)約用電(dian)(dian),一臺保溫(wen)爐比用調壓(ya)(ya)變(bian)(bian)壓(ya)(ya)器(qi)每晝夜可以節(jie)省300度電(dian)(dian),又能為生產自(zi)動化創造了條件。
另外,由于升(sheng)液(ye)(ye)(ye)(ye)管(guan)的(de)(de)(de)工作條件(jian)惡劣,鑄(zhu)(zhu)造(zao)科(ke)技工作者正在(zai)(zai)尋求(qiu)更好的(de)(de)(de)材料和(he)合理(li)的(de)(de)(de)措施以提高(gao)其(qi)壽(shou)命。現有(you)(you)(you)資料表(biao)明:采用(yong)(yong)(yong)含磷2.7%的(de)(de)(de)鑄(zhu)(zhu)鐵、含銅6.5%的(de)(de)(de)鑄(zhu)(zhu)鐵、高(gao)錳鑄(zhu)(zhu)鐵或(huo)用(yong)(yong)(yong)具有(you)(you)(you)D型石(shi)墨的(de)(de)(de)珠光(guang)體基體的(de)(de)(de)孕育(yu)鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造(zao)升(sheng)液(ye)(ye)(ye)(ye)管(guan),其(qi)壽(shou)命可(ke)能延長,可(ke)用(yong)(yong)(yong)120h以上(shang);有(you)(you)(you)的(de)(de)(de)采用(yong)(yong)(yong)普通(tong)鑄(zhu)(zhu)鐵管(guan)進行表(biao)面滲硫處理(li),在(zai)(zai)鋁(lv)液(ye)(ye)(ye)(ye)中(zhong)的(de)(de)(de)壽(shou)命約可(ke)提高(gao)3倍;有(you)(you)(you)的(de)(de)(de)在(zai)(zai)鑄(zhu)(zhu)鐵管(guan)表(biao)面噴鍍一(yi)層三氧(yang)化二鋁(lv)、氧(yang)化鋯或(huo)氧(yang)化鉻等材料,升(sheng)液(ye)(ye)(ye)(ye)管(guan)在(zai)(zai)鋁(lv)液(ye)(ye)(ye)(ye)中(zhong)的(de)(de)(de)壽(shou)命可(ke)達700h;有(you)(you)(you)的(de)(de)(de)試用(yong)(yong)(yong)氮化硅(gui)(gui)、碳化硅(gui)(gui)或(huo)氧(yang)化硼等耐(nai)熱陶瓷作升(sheng)液(ye)(ye)(ye)(ye)管(guan),雖然成本高(gao),但(dan)在(zai)(zai)鋁(lv)液(ye)(ye)(ye)(ye)中(zhong)可(ke)用(yong)(yong)(yong)半年(nian)以上(shang);還有(you)(you)(you)用(yong)(yong)(yong)石(shi)棉耐(nai)熱硅(gui)(gui)酸鹽作升(sheng)液(ye)(ye)(ye)(ye)管(guan),在(zai)(zai)三班連續作業的(de)(de)(de)情況下(xia),可(ke)使用(yong)(yong)(yong)4~5個月,效(xiao)果良好。