真(zhen)空(kong)熔(rong)(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)(lu)冶(ye)煉(lian)(lian)(lian)(lian)的(de)(de)優點(dian)(dian)(dian)是(shi)什么(me)
真(zhen)空(kong)熔(rong)(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)(lu)冶(ye)煉(lian)(lian)(lian)(lian)是(shi)在負壓條件下進(jin)行(xing)(xing)爐(lu)(lu)(lu)料(liao)的(de)(de)加(jia)熱(re)、熔(rong)(rong)化、精煉(lian)(lian)(lian)(lian)、合(he)金化和(he)澆注的(de)(de)煉(lian)(lian)(lian)(lian)鋼(gang)方法(fa)。具(ju)有(you)以(yi)(yi)下優點(dian)(dian)(dian)。
(1)精確的(de)(de)控制合(he)金的(de)(de)化學(xue)成(cheng)(cheng)分(fen)
由(you)于(yu)冶(ye)煉(lian)(lian)(lian)(lian)的(de)(de)全(quan)過(guo)程是(shi)在隔離大(da)氣的(de)(de)真(zhen)空(kong)下進(jin)行(xing)(xing)的(de)(de),因此真(zhen)空(kong)熔(rong)(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)(lu)減(jian)少(shao)了合(he)金元(yuan)素(su)的(de)(de)氧(yang)(yang)化損(sun)失,加(jia)之(zhi)鋼(gang)液中含(han)氧(yang)(yang)量很低(di),大(da)大(da)提高(gao)(gao)了合(he)金元(yuan)素(su)的(de)(de)回收(shou)率。從而可(ke)(ke)以(yi)(yi)精確的(de)(de)控制化學(xue)成(cheng)(cheng)分(fen)。
(2)由(you)于(yu)冶(ye)煉(lian)(lian)(lian)(lian)過(guo)程在真(zhen)空(kong)下進(jin)行(xing)(xing)、冶(ye)煉(lian)(lian)(lian)(lian)合(he)金中氣體含(han)量很低(di)。真(zhen)空(kong)下利(li)用(yong)(yong)碳(tan)對(dui)鋼(gang)液進(jin)行(xing)(xing)脫氧(yang)(yang)和(he)在真(zhen)空(kong)下澆注避免了二次氧(yang)(yang)化。這些優越條件使冶(ye)煉(lian)(lian)(lian)(lian)鋼(gang)中氣體與夾(jia)雜(za)物含(han)量低(di),大(da)大(da)提高(gao)(gao)了鋼(gang)的(de)(de)純凈(jing)度(du)。
(3)降低(di)鋼(gang)中微量有(you)害雜(za)質(zhi)含(han)量
微量雜(za)質(zhi)元(yuan)素(su)鉛(qian)、砷、錫、銻、鉍等(deng),對(dui)高(gao)(gao)溫合(he)金的(de)(de)熱(re)加(jia)工(gong)(gong)塑性和(he)高(gao)(gao)溫強度(du)帶來(lai)極明顯的(de)(de)危(wei)害。利(li)用(yong)(yong)微量雜(za)質(zhi)元(yuan)素(su)高(gao)(gao)蒸汽壓的(de)(de)特(te)點(dian)(dian)(dian),通過(guo)高(gao)(gao)溫和(he)高(gao)(gao)真(zhen)空(kong)可(ke)(ke)以(yi)(yi)有(you)效去除雜(za)質(zhi)元(yuan)素(su),減(jian)弱其危(wei)害作用(yong)(yong)。
(4)真(zhen)空(kong)熔(rong)(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)(lu)冶(ye)煉(lian)(lian)(lian)(lian)的(de)(de)工(gong)(gong)藝參數可(ke)(ke)調性強
通過(guo)對(dui)冶(ye)煉(lian)(lian)(lian)(lian)真(zhen)空(kong)度(du)、溫度(du)、精煉(lian)(lian)(lian)(lian)時間以(yi)(yi)及真(zhen)空(kong)燒(shao)結爐(lu)(lu)(lu)內氣氛等(deng)因素(su)的(de)(de)配合(he)與調節,可(ke)(ke)以(yi)(yi)達(da)到許多(duo)的(de)(de)精煉(lian)(lian)(lian)(lian)目的(de)(de)。這方面其工(gong)(gong)藝靈活(huo)性遠遠超(chao)過(guo)中頻感(gan)應爐(lu)(lu)(lu)冶(ye)煉(lian)(lian)(lian)(lian)。例如(ru),真(zhen)空(kong)熔(rong)(rong)煉(lian)(lian)(lian)(lian)爐(lu)(lu)(lu)冶(ye)煉(lian)(lian)(lian)(lian)在鋼(gang)液脫碳(tan)、脫氧(yang)(yang)、脫氮、揮發去除雜(za)質(zhi)元(yuan)素(su)、減(jian)少(shao)易氧(yang)(yang)化元(yuan)素(su)燒(shao)損(sun)、減(jian)少(shao)夾(jia)雜(za)物含(han)量等(deng)方面均具(ju)有(you)優勢。