保溫爐是一(yi)臺容量(liang)可達(da)600公斤的臥式有(you)鐵芯工頻感(gan)應電(dian)爐(lu),為(wei)了便于控制爐(lu)內熔融金屬的溫度,可以采用(yong)調(diao)(diao)壓(ya)變壓(ya)器進行保(bao)(bao)溫,但(dan)這種(zhong)舊(jiu)式設(she)備操(cao)作麻煩,二(er)來消(xiao)耗電(dian)力多,設(she)備占用(yong)面積也大,采用(yong)可控硅(gui)交流調(diao)(diao)壓(ya)器,操(cao)作簡單便利,而且能節(jie)約用(yong)電(dian),一(yi)臺保(bao)(bao)溫爐(lu)比用(yong)調(diao)(diao)壓(ya)變壓(ya)器每(mei)晝夜可以節(jie)省300度電(dian),又能為(wei)生產自(zi)動化創造了條件(jian)。
另(ling)外,由于(yu)升(sheng)液(ye)(ye)管(guan)(guan)的工(gong)(gong)作(zuo)條件惡劣(lie),鑄(zhu)造科技工(gong)(gong)作(zuo)者正(zheng)在(zai)(zai)尋求(qiu)更好的材(cai)料和合理(li)(li)的措施以提高(gao)(gao)其(qi)壽命(ming)。現有(you)(you)資料表明(ming):采(cai)用(yong)(yong)含磷(lin)2.7%的鑄(zhu)鐵(tie)、含銅(tong)6.5%的鑄(zhu)鐵(tie)、高(gao)(gao)錳鑄(zhu)鐵(tie)或(huo)用(yong)(yong)具(ju)有(you)(you)D型石墨的珠光體基體的孕育鑄(zhu)鐵(tie)鑄(zhu)造升(sheng)液(ye)(ye)管(guan)(guan),其(qi)壽命(ming)可(ke)(ke)能延長,可(ke)(ke)用(yong)(yong)120h以上;有(you)(you)的采(cai)用(yong)(yong)普(pu)通鑄(zhu)鐵(tie)管(guan)(guan)進行表面滲硫處理(li)(li),在(zai)(zai)鋁(lv)液(ye)(ye)中的壽命(ming)約可(ke)(ke)提高(gao)(gao)3倍;有(you)(you)的在(zai)(zai)鑄(zhu)鐵(tie)管(guan)(guan)表面噴(pen)鍍一層三氧化(hua)二鋁(lv)、氧化(hua)鋯或(huo)氧化(hua)鉻等(deng)材(cai)料,升(sheng)液(ye)(ye)管(guan)(guan)在(zai)(zai)鋁(lv)液(ye)(ye)中的壽命(ming)可(ke)(ke)達(da)700h;有(you)(you)的試用(yong)(yong)氮化(hua)硅、碳化(hua)硅或(huo)氧化(hua)硼等(deng)耐熱(re)陶(tao)瓷作(zuo)升(sheng)液(ye)(ye)管(guan)(guan),雖(sui)然(ran)成本(ben)高(gao)(gao),但在(zai)(zai)鋁(lv)液(ye)(ye)中可(ke)(ke)用(yong)(yong)半(ban)年以上;還有(you)(you)用(yong)(yong)石棉耐熱(re)硅酸(suan)鹽作(zuo)升(sheng)液(ye)(ye)管(guan)(guan),在(zai)(zai)三班(ban)連續作(zuo)業的情況下,可(ke)(ke)使用(yong)(yong)4~5個月,效(xiao)果良好。