保溫爐是一臺容(rong)量可達(da)600公(gong)斤(jin)的(de)臥式有鐵芯工頻感應電爐(lu),為(wei)了便(bian)于控制爐(lu)內(nei)熔融金(jin)屬的(de)溫(wen)度,可以采用(yong)(yong)調壓(ya)變壓(ya)器進行保(bao)溫(wen),但這種舊式設(she)備操作麻煩(fan),二來消耗電力多,設(she)備占用(yong)(yong)面積也大,采用(yong)(yong)可控硅交流調壓(ya)器,操作簡單(dan)便(bian)利,而且能(neng)節(jie)約用(yong)(yong)電,一臺保(bao)溫(wen)爐(lu)比用(yong)(yong)調壓(ya)變壓(ya)器每晝夜可以節(jie)省300度電,又能(neng)為(wei)生產自動化創(chuang)造了條件。
另外,由于升液管的(de)(de)(de)工作條(tiao)件惡劣,鑄(zhu)(zhu)造(zao)科技工作者正在(zai)尋求(qiu)更好(hao)的(de)(de)(de)材(cai)料和(he)合理的(de)(de)(de)措施以提高其壽(shou)(shou)命(ming)。現有(you)資(zi)料表(biao)明:采用(yong)(yong)(yong)含磷(lin)2.7%的(de)(de)(de)鑄(zhu)(zhu)鐵、含銅(tong)6.5%的(de)(de)(de)鑄(zhu)(zhu)鐵、高錳鑄(zhu)(zhu)鐵或用(yong)(yong)(yong)具有(you)D型石墨的(de)(de)(de)珠光體基(ji)體的(de)(de)(de)孕育鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造(zao)升液管,其壽(shou)(shou)命(ming)可(ke)(ke)能延長(chang),可(ke)(ke)用(yong)(yong)(yong)120h以上(shang);有(you)的(de)(de)(de)采用(yong)(yong)(yong)普通鑄(zhu)(zhu)鐵管進行(xing)表(biao)面(mian)滲硫(liu)處理,在(zai)鋁(lv)液中(zhong)(zhong)的(de)(de)(de)壽(shou)(shou)命(ming)約(yue)可(ke)(ke)提高3倍;有(you)的(de)(de)(de)在(zai)鑄(zhu)(zhu)鐵管表(biao)面(mian)噴鍍一層(ceng)三(san)氧(yang)化二(er)鋁(lv)、氧(yang)化鋯或氧(yang)化鉻等(deng)材(cai)料,升液管在(zai)鋁(lv)液中(zhong)(zhong)的(de)(de)(de)壽(shou)(shou)命(ming)可(ke)(ke)達700h;有(you)的(de)(de)(de)試用(yong)(yong)(yong)氮化硅、碳(tan)化硅或氧(yang)化硼(peng)等(deng)耐熱陶瓷作升液管,雖然成本高,但(dan)在(zai)鋁(lv)液中(zhong)(zhong)可(ke)(ke)用(yong)(yong)(yong)半(ban)年以上(shang);還有(you)用(yong)(yong)(yong)石棉耐熱硅酸鹽作升液管,在(zai)三(san)班(ban)連續(xu)作業的(de)(de)(de)情況下(xia),可(ke)(ke)使用(yong)(yong)(yong)4~5個月,效果(guo)良好(hao)。