保溫爐是一臺(tai)容量可(ke)達600公斤的臥式有鐵芯工頻感應電(dian)(dian)爐,為了(le)便于(yu)控制(zhi)爐內熔融金屬的溫(wen)度,可(ke)以(yi)采用(yong)(yong)調(diao)壓(ya)變壓(ya)器進行保溫(wen),但(dan)這種舊(jiu)式設備操作(zuo)麻煩,二(er)來消耗電(dian)(dian)力(li)多,設備占用(yong)(yong)面積也大,采用(yong)(yong)可(ke)控硅交流調(diao)壓(ya)器,操作(zuo)簡單便利,而且能節約(yue)用(yong)(yong)電(dian)(dian),一臺(tai)保溫(wen)爐比(bi)用(yong)(yong)調(diao)壓(ya)變壓(ya)器每(mei)晝(zhou)夜可(ke)以(yi)節省300度電(dian)(dian),又能為生產(chan)自動化創造了(le)條件(jian)。
另外(wai),由于升(sheng)液管(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)工(gong)作(zuo)(zuo)條(tiao)件惡劣(lie),鑄(zhu)(zhu)造科(ke)技工(gong)作(zuo)(zuo)者正在(zai)(zai)尋求更好(hao)的(de)(de)(de)(de)(de)(de)材(cai)料和合理(li)的(de)(de)(de)(de)(de)(de)措(cuo)施(shi)以提高其(qi)壽命。現有資(zi)料表明:采(cai)用(yong)(yong)(yong)(yong)含(han)磷(lin)2.7%的(de)(de)(de)(de)(de)(de)鑄(zhu)(zhu)鐵(tie)、含(han)銅6.5%的(de)(de)(de)(de)(de)(de)鑄(zhu)(zhu)鐵(tie)、高錳鑄(zhu)(zhu)鐵(tie)或(huo)(huo)用(yong)(yong)(yong)(yong)具有D型石(shi)墨的(de)(de)(de)(de)(de)(de)珠光體基體的(de)(de)(de)(de)(de)(de)孕(yun)育鑄(zhu)(zhu)鐵(tie)鑄(zhu)(zhu)造升(sheng)液管(guan)(guan)(guan),其(qi)壽命可(ke)能(neng)延(yan)長(chang),可(ke)用(yong)(yong)(yong)(yong)120h以上(shang);有的(de)(de)(de)(de)(de)(de)采(cai)用(yong)(yong)(yong)(yong)普通(tong)鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)進行(xing)表面滲硫處理(li),在(zai)(zai)鋁液中的(de)(de)(de)(de)(de)(de)壽命約可(ke)提高3倍;有的(de)(de)(de)(de)(de)(de)在(zai)(zai)鑄(zhu)(zhu)鐵(tie)管(guan)(guan)(guan)表面噴鍍一層三氧(yang)化二鋁、氧(yang)化鋯或(huo)(huo)氧(yang)化鉻等材(cai)料,升(sheng)液管(guan)(guan)(guan)在(zai)(zai)鋁液中的(de)(de)(de)(de)(de)(de)壽命可(ke)達(da)700h;有的(de)(de)(de)(de)(de)(de)試用(yong)(yong)(yong)(yong)氮(dan)化硅(gui)、碳化硅(gui)或(huo)(huo)氧(yang)化硼(peng)等耐熱(re)陶瓷作(zuo)(zuo)升(sheng)液管(guan)(guan)(guan),雖然成本(ben)高,但在(zai)(zai)鋁液中可(ke)用(yong)(yong)(yong)(yong)半年以上(shang);還(huan)有用(yong)(yong)(yong)(yong)石(shi)棉耐熱(re)硅(gui)酸鹽(yan)作(zuo)(zuo)升(sheng)液管(guan)(guan)(guan),在(zai)(zai)三班(ban)連續作(zuo)(zuo)業(ye)的(de)(de)(de)(de)(de)(de)情況下,可(ke)使用(yong)(yong)(yong)(yong)4~5個(ge)月,效(xiao)果(guo)良好(hao)。