保溫爐是一(yi)臺容(rong)量(liang)可(ke)達600公斤的臥(wo)式有鐵(tie)芯工頻感應電(dian)爐(lu),為了便(bian)于控(kong)制爐(lu)內(nei)熔融金屬(shu)的溫度,可(ke)以采用(yong)調壓(ya)(ya)變壓(ya)(ya)器進行保(bao)溫,但這(zhe)種(zhong)舊(jiu)式設(she)備(bei)操作麻煩(fan),二來消耗電(dian)力多,設(she)備(bei)占用(yong)面積(ji)也大(da),采用(yong)可(ke)控(kong)硅交流調壓(ya)(ya)器,操作簡單(dan)便(bian)利,而且能(neng)節約用(yong)電(dian),一(yi)臺保(bao)溫爐(lu)比用(yong)調壓(ya)(ya)變壓(ya)(ya)器每晝(zhou)夜可(ke)以節省300度電(dian),又能(neng)為生產自動化創造(zao)了條件。
另(ling)外(wai),由于(yu)升(sheng)(sheng)液管(guan)(guan)的(de)(de)工作條(tiao)件惡劣,鑄(zhu)(zhu)(zhu)造(zao)科(ke)技工作者(zhe)正在尋求更好的(de)(de)材(cai)料(liao)和合理的(de)(de)措施以(yi)提(ti)高其(qi)(qi)壽(shou)命(ming)。現有(you)(you)資料(liao)表(biao)明:采(cai)用(yong)(yong)(yong)含磷2.7%的(de)(de)鑄(zhu)(zhu)(zhu)鐵(tie)、含銅(tong)6.5%的(de)(de)鑄(zhu)(zhu)(zhu)鐵(tie)、高錳鑄(zhu)(zhu)(zhu)鐵(tie)或(huo)用(yong)(yong)(yong)具(ju)有(you)(you)D型石墨的(de)(de)珠光體(ti)基體(ti)的(de)(de)孕育鑄(zhu)(zhu)(zhu)鐵(tie)鑄(zhu)(zhu)(zhu)造(zao)升(sheng)(sheng)液管(guan)(guan),其(qi)(qi)壽(shou)命(ming)可(ke)能(neng)延長,可(ke)用(yong)(yong)(yong)120h以(yi)上(shang);有(you)(you)的(de)(de)采(cai)用(yong)(yong)(yong)普通鑄(zhu)(zhu)(zhu)鐵(tie)管(guan)(guan)進行(xing)表(biao)面(mian)滲硫處理,在鋁(lv)(lv)液中(zhong)的(de)(de)壽(shou)命(ming)約可(ke)提(ti)高3倍;有(you)(you)的(de)(de)在鑄(zhu)(zhu)(zhu)鐵(tie)管(guan)(guan)表(biao)面(mian)噴鍍一層三氧化(hua)(hua)二(er)鋁(lv)(lv)、氧化(hua)(hua)鋯或(huo)氧化(hua)(hua)鉻等材(cai)料(liao),升(sheng)(sheng)液管(guan)(guan)在鋁(lv)(lv)液中(zhong)的(de)(de)壽(shou)命(ming)可(ke)達700h;有(you)(you)的(de)(de)試用(yong)(yong)(yong)氮化(hua)(hua)硅(gui)、碳化(hua)(hua)硅(gui)或(huo)氧化(hua)(hua)硼等耐(nai)(nai)熱陶瓷作升(sheng)(sheng)液管(guan)(guan),雖然(ran)成(cheng)本高,但在鋁(lv)(lv)液中(zhong)可(ke)用(yong)(yong)(yong)半年以(yi)上(shang);還有(you)(you)用(yong)(yong)(yong)石棉耐(nai)(nai)熱硅(gui)酸鹽(yan)作升(sheng)(sheng)液管(guan)(guan),在三班連續作業的(de)(de)情況下,可(ke)使用(yong)(yong)(yong)4~5個月,效果良好。