給(gei)大家(jia)介(jie)紹下(xia)多(duo)用(yong)(yong)爐(lu)氮(dan)(dan)氣(qi)(qi)純(chun)度要求:1.本箱式可(ke)(ke)(ke)控氣(qi)(qi)氛(fen)(fen)(fen)多(duo)用(yong)(yong)爐(lu)生產線主要用(yong)(yong)于(yu)工(gong)(gong)件在可(ke)(ke)(ke)控氣(qi)(qi)氛(fen)(fen)(fen)下(xia)的(de)(de)氣(qi)(qi)體(ti)滲(shen)碳(tan)、碳(tan)氮(dan)(dan)共(gong)滲(shen)、滲(shen)碳(tan)后(hou)再次(ci)加(jia)熱淬(cui)(cui)火以(yi)及在保(bao)(bao)護氣(qi)(qi)氛(fen)(fen)(fen)下(xia)的(de)(de)淬(cui)(cui)火、回(hui)火。該設(she)備的(de)(de)操(cao)(cao)作必須(xu)安(an)全可(ke)(ke)(ke)靠,直(zhi)接(jie)簡(jian)捷(jie),采用(yong)(yong)計算(suan)機全過(guo)(guo)程自(zi)動(dong)控制(zhi),工(gong)(gong)藝穩定性好(hao),在停電或其它意(yi)外情(qing)況下(xia),能(neng)(neng)夠(gou)實現自(zi)動(dong)充氮(dan)(dan),并可(ke)(ke)(ke)通過(guo)(guo)手動(dong)操(cao)(cao)作完(wan)(wan)成(cheng)后(hou)續工(gong)(gong)序,以(yi)確保(bao)(bao)安(an)全操(cao)(cao)作和(he)產品質量。2.帶保(bao)(bao)護氣(qi)(qi)氛(fen)(fen)(fen)的(de)(de)回(hui)火爐(lu)用(yong)(yong)于(yu)工(gong)(gong)件的(de)(de)回(hui)火及時效退火(用(yong)(yong)于(yu)高低(di)溫(wen)不同(tong)(tong)溫(wen)度段時加(jia)熱功率應可(ke)(ke)(ke)調,帶有(you)保(bao)(bao)護氣(qi)(qi)氛(fen)(fen)(fen)功能(neng)(neng))。3.用(yong)(yong)于(yu)滲(shen)碳(tan)、碳(tan)氮(dan)(dan)共(gong)滲(shen)前及滲(shen)碳(tan)、碳(tan)氮(dan)(dan)共(gong)滲(shen)淬(cui)(cui)火后(hou)工(gong)(gong)件的(de)(de)清(qing)洗(xi)、烘(hong)干。工(gong)(gong)件清(qing)洗(xi)、烘(hong)干后(hou)的(de)(de)清(qing)潔度達到滲(shen)碳(tan)、碳(tan)氮(dan)(dan)共(gong)滲(shen)要求的(de)(de)標準,且工(gong)(gong)件無腐蝕、對(dui)下(xia)道工(gong)(gong)序熱處理質量無影響。4.裝(zhuang)卸(xie)料(liao)車(che)用(yong)(yong)于(yu)箱式可(ke)(ke)(ke)控氣(qi)(qi)氛(fen)(fen)(fen)多(duo)用(yong)(yong)爐(lu)、回(hui)火爐(lu)、清(qing)洗(xi)機的(de)(de)裝(zhuang)卸(xie)料(liao)及生產線各(ge)工(gong)(gong)序之間工(gong)(gong)件的(de)(de)傳送。能(neng)(neng)夠(gou)準確按規定位置完(wan)(wan)成(cheng)上述設(she)備工(gong)(gong)作室的(de)(de)裝(zhuang)卸(xie)料(liao)。該生產線的(de)(de)所有(you)設(she)備必須(xu)是(shi)全新設(she)備(包括所有(you)零部件、元器件和(he)附(fu)件)。由不低(di)于(yu)國家(jia)標準的(de)(de)先進可(ke)(ke)(ke)靠的(de)(de)材料(liao)、生產工(gong)(gong)藝及規范制(zhi)造而成(cheng);投標方(fang)投標的(de)(de)同(tong)(tong)類設(she)備應具有(you)在國內煤礦機械行(xing)業或同(tong)(tong)類行(xing)業二(er)年(nian)以(yi)上的(de)(de)使用(yong)(yong)經驗。
天津井式氮化爐是一種能夠在真空的狀態下進行滲透處理的一種裝置,在汽車的生產制作領域應用的比較廣泛,因為有了真空滲碳爐之后就能夠提高我們的工作效率,那么對于真空滲碳爐來說有什么樣的優勢呢?井式氮化爐價格給大家介(jie)紹下井(jing)式(shi)滲(shen)(shen)(shen)碳爐(lu)的(de)優勢:1.克服傳(chuan)統氣(qi)氛熱滲(shen)(shen)(shen)碳無法(fa)解決的(de)盲孔滲(shen)(shen)(shen)碳問(wen)題(ti)。2.避免內氧化(hua)(hua)問(wen)題(ti) 。3 真(zhen)空(kong)(kong)滲(shen)(shen)(shen)碳的(de)工(gong)藝(yi)溫度(du)達1700攝氏度(du)。4 縮短工(gong)藝(yi)時(shi)間(jian)。5.真(zhen)空(kong)(kong)滲(shen)(shen)(shen)碳技術與高(gao)壓氣(qi)冷淬火結合(he)后減小畸變。6.提升(sheng)微觀結構性質、部件硬度(du)等方面(mian)效(xiao)果。 7. 解決滲(shen)(shen)(shen)碳過程中工(gong)件表面(mian)的(de)晶間(jian)氧化(hua)(hua)、合(he)金元素貧化(hua)(hua)等問(wen)題(ti)。8. 真(zhen)空(kong)(kong)滲(shen)(shen)(shen)碳與氣(qi)體(ti)淬火相結合(he),通過對淬火過程中冷卻速度(du)的(de)控制,提升(sheng)產(chan)品處理質量。9. 真(zhen)空(kong)(kong)滲(shen)(shen)(shen)碳的(de)廢氣(qi)排放量小,能耗低。
吹主回保(bao)(bao)險怎么解決(jue):1.滲氮(dan)(dan)(dan)前的模具必(bi)須是先(xian)經(jing)過正(zheng)火或調(diao)質處理(li)過的工(gong)件。2.先(xian)用汽(qi)油和酒精擦洗工(gong)件表面,不得有(you)銹斑、油污、臟物存在(zai)。3.裝入爐(lu)內(nei)后,對(dui)稱擰緊爐(lu)蓋(gai)(gai)壓(ya)(ya)緊螺栓。4.將(jiang)爐(lu)罐和爐(lu)蓋(gai)(gai)進(jin)水(shui)口通入冷(leng)卻水(shui)進(jin)行循(xun)環水(shui)冷(leng)。爐(lu)蓋(gai)(gai)上(shang)管道冷(leng)卻水(shui)下(xia)端為進(jin)水(shui),上(shang)端為出(chu)水(shui),爐(lu)罐單獨進(jin)水(shui),單獨排水(shui),爐(lu)蓋(gai)(gai)所有(you)水(shui)管可按低進(jin)高出(chu)原則(ze)串聯,由一個(ge)口進(jin)水(shui),一個(ge)口排水(shui)。5.升(sheng)溫(wen)(wen)前應(ying)先(xian)送氮(dan)(dan)(dan)氣(qi)排氣(qi),排氣(qi)時流(liu)(liu)量應(ying)比使(shi)用時大一倍以上(shang)。排氣(qi)10分(fen)鐘后,將(jiang)控溫(wen)(wen)儀表設(she)定(ding)到(dao)(dao)150℃,自動(dong)加熱(re)開關(guan)撥向(xiang)開,邊排氣(qi)邊加熱(re)150℃保(bao)(bao)持(chi)(chi)2h排氣(qi),再(zai)將(jiang)控溫(wen)(wen)儀表設(she)定(ding)到(dao)(dao)530℃,把(ba)氨(an)氣(qi)流(liu)(liu)量調(diao)小,保(bao)(bao) 持(chi)(chi)爐(lu)內(nei)正(zheng)壓(ya)(ya),排氣(qi)口有(you)較小氣(qi)流(liu)(liu)向(xiang)上(shang)的壓(ya)(ya)力(li),當(dang)爐(lu)溫(wen)(wen)升(sheng)到(dao)(dao)530℃時,恒溫(wen)(wen)恒流(liu)(liu)滲氮(dan)(dan)(dan)3-20h,再(zai)將(jiang)氨(an)氣(qi)壓(ya)(ya)力(li)調(diao)大一點,讓(rang)排氣(qi)維(wei)持(chi)(chi)適中(zhong)壓(ya)(ya)力(li),滲氮(dan)(dan)(dan)4-70h, 再(zai)將(jiang)氨(an)氣(qi)壓(ya)(ya)力(li)調(diao)小,退氮(dan)(dan)(dan)1-2h,切斷電源,停止(zhi)加熱(re),給少量氨(an)氣(qi),使(shi)爐(lu)內(nei)維(wei)持(chi)(chi)正(zheng)壓(ya)(ya),待爐(lu)溫(wen)(wen)降到(dao)(dao)150℃以下(xia)方可停止(zhi)供氨(an)出(chu)爐(lu)。
與其他(ta)化學(xue)熱(re)處(chu)理一樣(yang)﹐也包含(han) 3 個基(ji)本(ben)過程(cheng):(1)分(fen)(fen)解 :滲(shen)碳(tan)(tan)介質的(de)(de)分(fen)(fen)解產生活性碳(tan)(tan)原子。(2)吸(xi)附(fu):活性碳(tan)(tan)原子被鋼(gang)件表面吸(xi)收后即溶到表層奧氏體(ti)中(zhong)(zhong)﹐使奧氏體(ti)中(zhong)(zhong)含(han)碳(tan)(tan)量增加。(3)擴(kuo)散 :表面含(han)碳(tan)(tan)量增加便與心部含(han)碳(tan)(tan)量出(chu)現濃度(du)差(cha),表面的(de)(de)碳(tan)(tan)遂向內部擴(kuo)散。碳(tan)(tan)在(zai)(zai)鋼(gang)中(zhong)(zhong)的(de)(de)擴(kuo)散速度(du)主(zhu)要取決于(yu)溫(wen)度(du)﹐同時(shi)與工件中(zhong)(zhong)被滲(shen)元素(su)內外 濃度(du)差(cha)和(he)鋼(gang)中(zhong)(zhong)合金元素(su)含(han)量有關(guan)。先把它分(fen)(fen)離開來(lai),然后用分(fen)(fen)出(chu)來(lai)的(de)(de)東西去(qu)(qu)吸(xi)引其他(ta)別的(de)(de),在(zai)(zai)把這些擴(kuo)散出(chu)去(qu)(qu)。整體(ti)上的(de)(de)流(liu)程(cheng)就(jiu)是這個樣(yang)子了(le),假如(ru)您(nin)(nin)在(zai)(zai)頭一個環(huan)節就(jiu)沒有操(cao)控(kong)好的(de)(de)話,那么在(zai)(zai)后面的(de)(de)環(huan)節就(jiu)不(bu)能進(jin)行下去(qu)(qu)了(le),所(suo)以別看滲(shen)碳(tan)(tan)爐的(de)(de)熱(re)處(chu)理和(he)別的(de)(de)沒什么不(bu)同,假如(ru)您(nin)(nin)操(cao)作失當(dang)也是會影響(xiang)滲(shen)碳(tan)(tan)爐的(de)(de)!