保溫爐是一(yi)臺容(rong)量可(ke)達600公斤(jin)的(de)臥式(shi)有鐵芯工頻感應電(dian)爐,為(wei)了便于控(kong)制爐內熔融金屬的(de)溫(wen)度,可(ke)以(yi)采用調壓(ya)變壓(ya)器進(jin)行保溫(wen),但這種(zhong)舊式(shi)設(she)(she)備操作(zuo)(zuo)麻煩,二來消耗電(dian)力多,設(she)(she)備占用面積也(ye)大,采用可(ke)控(kong)硅交流調壓(ya)器,操作(zuo)(zuo)簡單便利,而且(qie)能(neng)節(jie)約(yue)用電(dian),一(yi)臺保溫(wen)爐比用調壓(ya)變壓(ya)器每晝(zhou)夜(ye)可(ke)以(yi)節(jie)省(sheng)300度電(dian),又能(neng)為(wei)生(sheng)產自動(dong)化創造了條件。
另外(wai),由于升(sheng)(sheng)液(ye)管(guan)(guan)(guan)的工作(zuo)條件惡(e)劣(lie),鑄(zhu)(zhu)造(zao)科技工作(zuo)者正在(zai)(zai)尋(xun)求更(geng)好的材(cai)(cai)料和合(he)理的措(cuo)施以提高(gao)(gao)其(qi)壽(shou)命。現有(you)資料表(biao)明:采用(yong)(yong)含磷2.7%的鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)、含銅6.5%的鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)、高(gao)(gao)錳鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)或(huo)用(yong)(yong)具有(you)D型石(shi)墨的珠光體基體的孕育(yu)鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)鑄(zhu)(zhu)造(zao)升(sheng)(sheng)液(ye)管(guan)(guan)(guan),其(qi)壽(shou)命可(ke)能延(yan)長,可(ke)用(yong)(yong)120h以上;有(you)的采用(yong)(yong)普(pu)通(tong)鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)管(guan)(guan)(guan)進(jin)行(xing)表(biao)面滲(shen)硫處(chu)理,在(zai)(zai)鋁液(ye)中(zhong)的壽(shou)命約可(ke)提高(gao)(gao)3倍;有(you)的在(zai)(zai)鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)管(guan)(guan)(guan)表(biao)面噴(pen)鍍一層三(san)氧(yang)化(hua)二鋁、氧(yang)化(hua)鋯或(huo)氧(yang)化(hua)鉻(ge)等(deng)材(cai)(cai)料,升(sheng)(sheng)液(ye)管(guan)(guan)(guan)在(zai)(zai)鋁液(ye)中(zhong)的壽(shou)命可(ke)達700h;有(you)的試用(yong)(yong)氮(dan)化(hua)硅(gui)、碳化(hua)硅(gui)或(huo)氧(yang)化(hua)硼(peng)等(deng)耐(nai)熱陶瓷作(zuo)升(sheng)(sheng)液(ye)管(guan)(guan)(guan),雖然(ran)成本高(gao)(gao),但(dan)在(zai)(zai)鋁液(ye)中(zhong)可(ke)用(yong)(yong)半年以上;還(huan)有(you)用(yong)(yong)石(shi)棉耐(nai)熱硅(gui)酸鹽作(zuo)升(sheng)(sheng)液(ye)管(guan)(guan)(guan),在(zai)(zai)三(san)班連(lian)續作(zuo)業(ye)的情況(kuang)下,可(ke)使用(yong)(yong)4~5個月(yue),效(xiao)果良(liang)好。