保溫爐是一(yi)臺容量可達600公(gong)斤的臥式有鐵芯工頻感應(ying)電(dian)爐,為了便(bian)于控制爐內熔(rong)融金屬(shu)的溫度(du),可以(yi)采(cai)用(yong)調(diao)壓(ya)變壓(ya)器(qi)進行保溫,但這種舊式設備操作(zuo)麻(ma)煩,二來(lai)消耗(hao)電(dian)力多,設備占用(yong)面積也大(da),采(cai)用(yong)可控硅交(jiao)流調(diao)壓(ya)器(qi),操作(zuo)簡單便(bian)利,而且能節(jie)約(yue)用(yong)電(dian),一(yi)臺保溫爐比用(yong)調(diao)壓(ya)變壓(ya)器(qi)每晝(zhou)夜可以(yi)節(jie)省300度(du)電(dian),又(you)能為生產(chan)自動化創造了條件。
另外(wai),由(you)于(yu)升(sheng)液管(guan)的工作(zuo)條件惡(e)劣,鑄(zhu)(zhu)造科技工作(zuo)者(zhe)正在(zai)尋求更(geng)好的材料和(he)合理(li)的措施以(yi)提高其(qi)壽(shou)命(ming)。現有(you)資料表明:采用(yong)(yong)(yong)(yong)含磷(lin)2.7%的鑄(zhu)(zhu)鐵、含銅6.5%的鑄(zhu)(zhu)鐵、高錳鑄(zhu)(zhu)鐵或用(yong)(yong)(yong)(yong)具有(you)D型石墨的珠光體基體的孕育鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造升(sheng)液管(guan),其(qi)壽(shou)命(ming)可(ke)能延長,可(ke)用(yong)(yong)(yong)(yong)120h以(yi)上(shang);有(you)的采用(yong)(yong)(yong)(yong)普通鑄(zhu)(zhu)鐵管(guan)進行表面(mian)滲硫處理(li),在(zai)鋁液中的壽(shou)命(ming)約(yue)可(ke)提高3倍;有(you)的在(zai)鑄(zhu)(zhu)鐵管(guan)表面(mian)噴(pen)鍍一層三(san)氧(yang)(yang)化(hua)(hua)(hua)二鋁、氧(yang)(yang)化(hua)(hua)(hua)鋯(gao)或氧(yang)(yang)化(hua)(hua)(hua)鉻等材料,升(sheng)液管(guan)在(zai)鋁液中的壽(shou)命(ming)可(ke)達700h;有(you)的試用(yong)(yong)(yong)(yong)氮化(hua)(hua)(hua)硅、碳化(hua)(hua)(hua)硅或氧(yang)(yang)化(hua)(hua)(hua)硼等耐(nai)熱陶瓷作(zuo)升(sheng)液管(guan),雖然成本高,但在(zai)鋁液中可(ke)用(yong)(yong)(yong)(yong)半年以(yi)上(shang);還有(you)用(yong)(yong)(yong)(yong)石棉耐(nai)熱硅酸鹽(yan)作(zuo)升(sheng)液管(guan),在(zai)三(san)班連續作(zuo)業的情況下,可(ke)使用(yong)(yong)(yong)(yong)4~5個(ge)月,效果良好。