保溫爐是一臺(tai)容(rong)量可達600公斤的臥式有(you)鐵(tie)芯工頻感應電(dian)(dian)爐,為(wei)了(le)便(bian)于控制爐內熔融(rong)金屬的溫度,可以采用(yong)調(diao)壓(ya)(ya)變壓(ya)(ya)器進(jin)行保(bao)溫,但這種舊式設備(bei)操作(zuo)(zuo)麻煩,二來消耗電(dian)(dian)力多(duo),設備(bei)占(zhan)用(yong)面積也大(da),采用(yong)可控硅交流(liu)調(diao)壓(ya)(ya)器,操作(zuo)(zuo)簡(jian)單便(bian)利,而(er)且能節(jie)約(yue)用(yong)電(dian)(dian),一臺(tai)保(bao)溫爐比用(yong)調(diao)壓(ya)(ya)變壓(ya)(ya)器每晝(zhou)夜(ye)可以節(jie)省300度電(dian)(dian),又能為(wei)生產(chan)自動化創造了(le)條件。
另(ling)外,由(you)于升(sheng)(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan)的(de)(de)工(gong)作(zuo)條件惡劣(lie),鑄(zhu)(zhu)造科技(ji)工(gong)作(zuo)者正在尋(xun)求更好的(de)(de)材料和合理的(de)(de)措施以提高其壽(shou)命。現有(you)資料表(biao)明(ming):采用(yong)含(han)磷2.7%的(de)(de)鑄(zhu)(zhu)鐵、含(han)銅(tong)6.5%的(de)(de)鑄(zhu)(zhu)鐵、高錳(meng)鑄(zhu)(zhu)鐵或(huo)用(yong)具有(you)D型(xing)石(shi)墨的(de)(de)珠光體基體的(de)(de)孕育(yu)鑄(zhu)(zhu)鐵鑄(zhu)(zhu)造升(sheng)(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan),其壽(shou)命可(ke)能(neng)延長,可(ke)用(yong)120h以上;有(you)的(de)(de)采用(yong)普(pu)通鑄(zhu)(zhu)鐵管(guan)(guan)進行表(biao)面(mian)滲硫處理,在鋁液(ye)(ye)(ye)(ye)中(zhong)的(de)(de)壽(shou)命約可(ke)提高3倍;有(you)的(de)(de)在鑄(zhu)(zhu)鐵管(guan)(guan)表(biao)面(mian)噴(pen)鍍一層(ceng)三(san)氧(yang)化二鋁、氧(yang)化鋯或(huo)氧(yang)化鉻等(deng)(deng)材料,升(sheng)(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan)在鋁液(ye)(ye)(ye)(ye)中(zhong)的(de)(de)壽(shou)命可(ke)達700h;有(you)的(de)(de)試(shi)用(yong)氮化硅(gui)(gui)、碳化硅(gui)(gui)或(huo)氧(yang)化硼等(deng)(deng)耐(nai)(nai)熱陶瓷作(zuo)升(sheng)(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan),雖然成本高,但在鋁液(ye)(ye)(ye)(ye)中(zhong)可(ke)用(yong)半年以上;還有(you)用(yong)石(shi)棉耐(nai)(nai)熱硅(gui)(gui)酸鹽作(zuo)升(sheng)(sheng)液(ye)(ye)(ye)(ye)管(guan)(guan),在三(san)班連續作(zuo)業的(de)(de)情況下,可(ke)使用(yong)4~5個月,效果(guo)良好。