保溫爐是一臺容量可(ke)(ke)達600公斤(jin)的臥(wo)式有(you)鐵芯工頻(pin)感應(ying)電(dian)(dian)爐(lu),為了便于控制爐(lu)內熔融金屬的溫(wen)(wen)度,可(ke)(ke)以(yi)采(cai)用調(diao)壓(ya)變壓(ya)器(qi)進行(xing)保(bao)溫(wen)(wen),但這種舊式設(she)備(bei)(bei)操(cao)作麻煩(fan),二來(lai)消耗電(dian)(dian)力多,設(she)備(bei)(bei)占用面積(ji)也大,采(cai)用可(ke)(ke)控硅交(jiao)流調(diao)壓(ya)器(qi),操(cao)作簡單(dan)便利,而且(qie)能節(jie)約用電(dian)(dian),一臺保(bao)溫(wen)(wen)爐(lu)比(bi)用調(diao)壓(ya)變壓(ya)器(qi)每(mei)晝夜(ye)可(ke)(ke)以(yi)節(jie)省(sheng)300度電(dian)(dian),又能為生產自動化創造(zao)了條件。
另外,由(you)于升液(ye)管(guan)(guan)的(de)(de)工作條件惡劣,鑄(zhu)(zhu)造科技工作者正在尋求更好(hao)的(de)(de)材料(liao)和合理的(de)(de)措施以(yi)(yi)提高(gao)其壽(shou)(shou)命(ming)。現(xian)有(you)資料(liao)表明:采用(yong)(yong)(yong)(yong)含(han)磷2.7%的(de)(de)鑄(zhu)(zhu)鐵(tie)(tie)、含(han)銅(tong)6.5%的(de)(de)鑄(zhu)(zhu)鐵(tie)(tie)、高(gao)錳鑄(zhu)(zhu)鐵(tie)(tie)或用(yong)(yong)(yong)(yong)具有(you)D型石墨的(de)(de)珠光體(ti)基體(ti)的(de)(de)孕育鑄(zhu)(zhu)鐵(tie)(tie)鑄(zhu)(zhu)造升液(ye)管(guan)(guan),其壽(shou)(shou)命(ming)可(ke)能延(yan)長,可(ke)用(yong)(yong)(yong)(yong)120h以(yi)(yi)上;有(you)的(de)(de)采用(yong)(yong)(yong)(yong)普通(tong)鑄(zhu)(zhu)鐵(tie)(tie)管(guan)(guan)進行表面滲硫處(chu)理,在鋁(lv)(lv)液(ye)中的(de)(de)壽(shou)(shou)命(ming)約可(ke)提高(gao)3倍;有(you)的(de)(de)在鑄(zhu)(zhu)鐵(tie)(tie)管(guan)(guan)表面噴鍍(du)一層三氧(yang)化二鋁(lv)(lv)、氧(yang)化鋯或氧(yang)化鉻(ge)等(deng)(deng)材料(liao),升液(ye)管(guan)(guan)在鋁(lv)(lv)液(ye)中的(de)(de)壽(shou)(shou)命(ming)可(ke)達700h;有(you)的(de)(de)試用(yong)(yong)(yong)(yong)氮化硅(gui)、碳(tan)化硅(gui)或氧(yang)化硼(peng)等(deng)(deng)耐熱陶瓷作升液(ye)管(guan)(guan),雖然成(cheng)本高(gao),但在鋁(lv)(lv)液(ye)中可(ke)用(yong)(yong)(yong)(yong)半年以(yi)(yi)上;還有(you)用(yong)(yong)(yong)(yong)石棉耐熱硅(gui)酸鹽作升液(ye)管(guan)(guan),在三班連續(xu)作業的(de)(de)情(qing)況(kuang)下,可(ke)使用(yong)(yong)(yong)(yong)4~5個月,效(xiao)果良好(hao)。