真空(kong)(kong)(kong)熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)爐(lu)(lu)(lu)在(zai)(zai)(zai)使(shi)用(yong)時要(yao)注(zhu)意什(shen)么
真空(kong)(kong)(kong)熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)爐(lu)(lu)(lu)爐(lu)(lu)(lu)體(ti)上部(bu)(bu)(bu)內的(de)(de)(de)(de)(de)(de)中(zhong)心位(wei)置(zhi)設(she)置(zhi)的(de)(de)(de)(de)(de)(de)一(yi)(yi)(yi)個(ge)(ge)不(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)池通(tong)過密封裝置(zhi)與出(chu)料(liao)(liao)導(dao)槽(cao)固(gu)定連接,出(chu)料(liao)(liao)導(dao)槽(cao)另一(yi)(yi)(yi)端固(gu)定在(zai)(zai)(zai)爐(lu)(lu)(lu)體(ti)的(de)(de)(de)(de)(de)(de)爐(lu)(lu)(lu)壁上;熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)池的(de)(de)(de)(de)(de)(de)上方(fang)的(de)(de)(de)(de)(de)(de)爐(lu)(lu)(lu)蓋上中(zhong)心位(wei)置(zhi)設(she)置(zhi)的(de)(de)(de)(de)(de)(de)卸料(liao)(liao)螺桿(gan),穿過熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)池伸入***出(chu)料(liao)(liao)導(dao)槽(cao),爐(lu)(lu)(lu)蓋上卸料(liao)(liao)螺桿(gan)一(yi)(yi)(yi)側設(she)置(zhi)的(de)(de)(de)(de)(de)(de)煙(yan)囪出(chu)口(kou)與熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)池連通(tong);新(xin)型采用(yong)***燃(ran)氣燒嘴,天然氣為(wei)加熱原(yuan)料(liao)(liao),熱值(zhi)高,熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)速(su)度(du)快,并且能(neng)夠隨意移動生產(chan),填補了硼(peng)砂熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)設(she)備的(de)(de)(de)(de)(de)(de)空(kong)(kong)(kong)白;具有能(neng)耗低(di)、熱利用(yong)率高、體(ti)積小(xiao),結構(gou)合(he)(he)(he)理、維護(hu)檢(jian)修(xiu)方(fang)便、成(cheng)(cheng)本低(di)的(de)(de)(de)(de)(de)(de)特點。使(shi)用(yong)應(ying)注(zhu)意哪些問題:
1.預合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)
向真空(kong)(kong)(kong)熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)爐(lu)(lu)(lu)鋼(gang)(gang)(gang)(gang)(gang)(gang)液加入一(yi)(yi)(yi)種(zhong)或幾種(zhong)合(he)(he)(he)金(jin)(jin)(jin)元素(su),使(shi)其達到(dao)(dao)成(cheng)(cheng)品鋼(gang)(gang)(gang)(gang)(gang)(gang)成(cheng)(cheng)分(fen)(fen)規格要(yao)求的(de)(de)(de)(de)(de)(de)操(cao)(cao)作過程稱為(wei)合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)。多數(shu)情況(kuang)下脫(tuo)氧和合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)是同(tong)(tong)時進行的(de)(de)(de)(de)(de)(de),加入鋼(gang)(gang)(gang)(gang)(gang)(gang)中(zhong)的(de)(de)(de)(de)(de)(de)脫(tuo)氧劑一(yi)(yi)(yi)部(bu)(bu)(bu)分(fen)(fen)消耗于鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)(de)(de)(de)脫(tuo)氧,轉化(hua)(hua)(hua)(hua)為(wei)脫(tuo)氧產(chan)物(wu)排出(chu);另一(yi)(yi)(yi)部(bu)(bu)(bu)則為(wei)鋼(gang)(gang)(gang)(gang)(gang)(gang)水(shui)所(suo)吸收,起(qi)合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)作用(yong)。在(zai)(zai)(zai)脫(tuo)氧操(cao)(cao)作未全部(bu)(bu)(bu)完(wan)成(cheng)(cheng)前(qian),與脫(tuo)氧劑同(tong)(tong)時加入的(de)(de)(de)(de)(de)(de)合(he)(he)(he)金(jin)(jin)(jin)被鋼(gang)(gang)(gang)(gang)(gang)(gang)水(shui)吸收所(suo)起(qi)到(dao)(dao)的(de)(de)(de)(de)(de)(de)合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)作用(yong)稱為(wei)預合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)。
2.成(cheng)(cheng)分(fen)(fen)控制(zhi)(zhi)(zhi)
保證(zheng)成(cheng)(cheng)品鋼(gang)(gang)(gang)(gang)(gang)(gang)成(cheng)(cheng)分(fen)(fen)全部(bu)(bu)(bu)符(fu)合(he)(he)(he)標準(zhun)要(yao)求的(de)(de)(de)(de)(de)(de)操(cao)(cao)作。成(cheng)(cheng)分(fen)(fen)控制(zhi)(zhi)(zhi)貫穿于從配料(liao)(liao)到(dao)(dao)出(chu)鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)(de)(de)(de)各個(ge)(ge)環(huan)節,但***是合(he)(he)(he)金(jin)(jin)(jin)化(hua)(hua)(hua)(hua)時對(dui)合(he)(he)(he)金(jin)(jin)(jin)元素(su)成(cheng)(cheng)分(fen)(fen)的(de)(de)(de)(de)(de)(de)控制(zhi)(zhi)(zhi)。對(dui)優質(zhi)鋼(gang)(gang)(gang)(gang)(gang)(gang)往(wang)往(wang)要(yao)求把成(cheng)(cheng)分(fen)(fen)精(jing)確地(di)控制(zhi)(zhi)(zhi)在(zai)(zai)(zai)一(yi)(yi)(yi)個(ge)(ge)狹(xia)窄的(de)(de)(de)(de)(de)(de)范圍內;一(yi)(yi)(yi)般在(zai)(zai)(zai)不(bu)影(ying)響鋼(gang)(gang)(gang)(gang)(gang)(gang)性(xing)能(neng)的(de)(de)(de)(de)(de)(de)前(qian)提下,按中(zhong)、下限(xian)控制(zhi)(zhi)(zhi)。
3.熔(rong)(rong)(rong)(rong)(rong)(rong)化(hua)(hua)(hua)(hua)期(qi)(qi)
煉(lian)(lian)(lian)鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)化(hua)(hua)(hua)(hua)期(qi)(qi)主要(yao)是對(dui)真空(kong)(kong)(kong)熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)爐(lu)(lu)(lu)的(de)(de)(de)(de)(de)(de)平(ping)爐(lu)(lu)(lu)和電爐(lu)(lu)(lu)煉(lian)(lian)(lian)鋼(gang)(gang)(gang)(gang)(gang)(gang)而言。電弧爐(lu)(lu)(lu)煉(lian)(lian)(lian)鋼(gang)(gang)(gang)(gang)(gang)(gang)從通(tong)電開始到(dao)(dao)爐(lu)(lu)(lu)料(liao)(liao)全部(bu)(bu)(bu)熔(rong)(rong)(rong)(rong)(rong)(rong)清為(wei)止、小(xiao)型真空(kong)(kong)(kong)熔(rong)(rong)(rong)(rong)(rong)(rong)煉(lian)(lian)(lian)爐(lu)(lu)(lu)煉(lian)(lian)(lian)鋼(gang)(gang)(gang)(gang)(gang)(gang)從兌(dui)完(wan)鐵水(shui)到(dao)(dao)爐(lu)(lu)(lu)料(liao)(liao)全部(bu)(bu)(bu)化(hua)(hua)(hua)(hua)完(wan)為(wei)止都稱熔(rong)(rong)(rong)(rong)(rong)(rong)化(hua)(hua)(hua)(hua)期(qi)(qi)。熔(rong)(rong)(rong)(rong)(rong)(rong)化(hua)(hua)(hua)(hua)期(qi)(qi)的(de)(de)(de)(de)(de)(de)任(ren)務是盡快將(jiang)爐(lu)(lu)(lu)料(liao)(liao)熔(rong)(rong)(rong)(rong)(rong)(rong)化(hua)(hua)(hua)(hua)及升溫(wen),并造(zao)好熔(rong)(rong)(rong)(rong)(rong)(rong)化(hua)(hua)(hua)(hua)期(qi)(qi)的(de)(de)(de)(de)(de)(de)爐(lu)(lu)(lu)渣(zha)。
4.還(huan)(huan)原(yuan)期(qi)(qi)
普通(tong)功(gong)率真空(kong)(kong)(kong)甩帶爐(lu)(lu)(lu)煉(lian)(lian)(lian)鋼(gang)(gang)(gang)(gang)(gang)(gang)操(cao)(cao)作中(zhong),通(tong)常(chang)把氧化(hua)(hua)(hua)(hua)末期(qi)(qi)扒(ba)渣(zha)完(wan)畢到(dao)(dao)出(chu)鋼(gang)(gang)(gang)(gang)(gang)(gang)這段時間(jian)稱為(wei)還(huan)(huan)原(yuan)期(qi)(qi)。其主要(yao)任(ren)務是造(zao)還(huan)(huan)原(yuan)渣(zha)進行擴散(san)、脫(tuo)氧、脫(tuo)硫、控制(zhi)(zhi)(zhi)化(hua)(hua)(hua)(hua)學成(cheng)(cheng)分(fen)(fen)和調整溫(wen)度(du)。