保溫爐是一臺容量可(ke)達600公(gong)斤的臥(wo)式(shi)有鐵芯工頻感應電(dian)爐(lu),為了(le)便(bian)于控(kong)制爐(lu)內熔融金屬的溫度,可(ke)以采用調壓變壓器進行保溫,但這種(zhong)舊式(shi)設備操作麻煩,二來消(xiao)耗電(dian)力(li)多(duo),設備占用面積也(ye)大(da),采用可(ke)控(kong)硅交流調壓器,操作簡單便(bian)利(li),而且能節約用電(dian),一臺保溫爐(lu)比用調壓變壓器每晝夜可(ke)以節省300度電(dian),又能為生產自動化創(chuang)造了(le)條件。
另外(wai),由于升(sheng)液管(guan)(guan)(guan)(guan)的(de)工作(zuo)條件惡劣,鑄(zhu)造(zao)(zao)科技工作(zuo)者正在(zai)(zai)尋(xun)求更好(hao)的(de)材(cai)料和合理的(de)措施(shi)以提(ti)(ti)高(gao)其壽(shou)命(ming)。現有資料表明:采用(yong)(yong)(yong)含磷(lin)2.7%的(de)鑄(zhu)鐵(tie)(tie)、含銅6.5%的(de)鑄(zhu)鐵(tie)(tie)、高(gao)錳鑄(zhu)鐵(tie)(tie)或(huo)用(yong)(yong)(yong)具(ju)有D型石(shi)墨的(de)珠光體(ti)基體(ti)的(de)孕育(yu)鑄(zhu)鐵(tie)(tie)鑄(zhu)造(zao)(zao)升(sheng)液管(guan)(guan)(guan)(guan),其壽(shou)命(ming)可(ke)能延(yan)長,可(ke)用(yong)(yong)(yong)120h以上;有的(de)采用(yong)(yong)(yong)普通(tong)鑄(zhu)鐵(tie)(tie)管(guan)(guan)(guan)(guan)進(jin)行表面(mian)滲硫處理,在(zai)(zai)鋁(lv)(lv)(lv)液中(zhong)的(de)壽(shou)命(ming)約(yue)可(ke)提(ti)(ti)高(gao)3倍(bei);有的(de)在(zai)(zai)鑄(zhu)鐵(tie)(tie)管(guan)(guan)(guan)(guan)表面(mian)噴鍍(du)一層三氧(yang)化(hua)(hua)二鋁(lv)(lv)(lv)、氧(yang)化(hua)(hua)鋯或(huo)氧(yang)化(hua)(hua)鉻等(deng)材(cai)料,升(sheng)液管(guan)(guan)(guan)(guan)在(zai)(zai)鋁(lv)(lv)(lv)液中(zhong)的(de)壽(shou)命(ming)可(ke)達700h;有的(de)試用(yong)(yong)(yong)氮化(hua)(hua)硅、碳化(hua)(hua)硅或(huo)氧(yang)化(hua)(hua)硼等(deng)耐(nai)熱陶瓷(ci)作(zuo)升(sheng)液管(guan)(guan)(guan)(guan),雖然成本高(gao),但(dan)在(zai)(zai)鋁(lv)(lv)(lv)液中(zhong)可(ke)用(yong)(yong)(yong)半年以上;還有用(yong)(yong)(yong)石(shi)棉耐(nai)熱硅酸鹽作(zuo)升(sheng)液管(guan)(guan)(guan)(guan),在(zai)(zai)三班連(lian)續作(zuo)業的(de)情況(kuang)下,可(ke)使用(yong)(yong)(yong)4~5個月,效(xiao)果良好(hao)。