給大家(jia)介紹下(xia)多用(yong)(yong)(yong)爐氮氣純度要(yao)求：1.本(ben)箱(xiang)(xiang)式可(ke)(ke)控(kong)氣氛(fen)(fen)(fen)多用(yong)(yong)(yong)爐生(sheng)產(chan)線主要(yao)用(yong)(yong)(yong)于(yu)(yu)工(gong)(gong)件(jian)(jian)(jian)(jian)在(zai)可(ke)(ke)控(kong)氣氛(fen)(fen)(fen)下(xia)的(de)(de)(de)(de)(de)氣體(ti)滲(shen)(shen)碳(tan)(tan)(tan)、碳(tan)(tan)(tan)氮共(gong)滲(shen)(shen)、滲(shen)(shen)碳(tan)(tan)(tan)后(hou)再次加熱淬火(huo)以(yi)及(ji)(ji)在(zai)保護(hu)氣氛(fen)(fen)(fen)下(xia)的(de)(de)(de)(de)(de)淬火(huo)、回(hui)火(huo)。該設備(bei)的(de)(de)(de)(de)(de)操作必(bi)須(xu)安(an)全可(ke)(ke)靠，直接簡(jian)捷，采(cai)用(yong)(yong)(yong)計(ji)算(suan)機(ji)全過(guo)程自(zi)動(dong)(dong)控(kong)制，工(gong)(gong)藝(yi)穩(wen)定性好，在(zai)停電或其它意外情況(kuang)下(xia)，能(neng)夠(gou)實現自(zi)動(dong)(dong)充氮，并可(ke)(ke)通過(guo)手動(dong)(dong)操作完(wan)成后(hou)續(xu)工(gong)(gong)序，以(yi)確保安(an)全操作和(he)產(chan)品質(zhi)(zhi)量(liang)。2.帶保護(hu)氣氛(fen)(fen)(fen)的(de)(de)(de)(de)(de)回(hui)火(huo)爐用(yong)(yong)(yong)于(yu)(yu)工(gong)(gong)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)回(hui)火(huo)及(ji)(ji)時效退火(huo)（用(yong)(yong)(yong)于(yu)(yu)高低(di)溫不(bu)同(tong)(tong)溫度段時加熱功(gong)(gong)率應可(ke)(ke)調，帶有保護(hu)氣氛(fen)(fen)(fen)功(gong)(gong)能(neng)）。3.用(yong)(yong)(yong)于(yu)(yu)滲(shen)(shen)碳(tan)(tan)(tan)、碳(tan)(tan)(tan)氮共(gong)滲(shen)(shen)前及(ji)(ji)滲(shen)(shen)碳(tan)(tan)(tan)、碳(tan)(tan)(tan)氮共(gong)滲(shen)(shen)淬火(huo)后(hou)工(gong)(gong)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)清(qing)洗(xi)、烘干(gan)。工(gong)(gong)件(jian)(jian)(jian)(jian)清(qing)洗(xi)、烘干(gan)后(hou)的(de)(de)(de)(de)(de)清(qing)潔度達到滲(shen)(shen)碳(tan)(tan)(tan)、碳(tan)(tan)(tan)氮共(gong)滲(shen)(shen)要(yao)求的(de)(de)(de)(de)(de)標準，且工(gong)(gong)件(jian)(jian)(jian)(jian)無腐蝕(shi)、對下(xia)道工(gong)(gong)序熱處(chu)理質(zhi)(zhi)量(liang)無影響。4.裝(zhuang)(zhuang)卸料車用(yong)(yong)(yong)于(yu)(yu)箱(xiang)(xiang)式可(ke)(ke)控(kong)氣氛(fen)(fen)(fen)多用(yong)(yong)(yong)爐、回(hui)火(huo)爐、清(qing)洗(xi)機(ji)的(de)(de)(de)(de)(de)裝(zhuang)(zhuang)卸料及(ji)(ji)生(sheng)產(chan)線各工(gong)(gong)序之間(jian)工(gong)(gong)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)傳送(song)。能(neng)夠(gou)準確按規(gui)定位置完(wan)成上(shang)述設備(bei)工(gong)(gong)作室的(de)(de)(de)(de)(de)裝(zhuang)(zhuang)卸料。該生(sheng)產(chan)線的(de)(de)(de)(de)(de)所(suo)有設備(bei)必(bi)須(xu)是全新設備(bei)（包括所(suo)有零部件(jian)(jian)(jian)(jian)、元器件(jian)(jian)(jian)(jian)和(he)附件(jian)(jian)(jian)(jian)）。由(you)不(bu)低(di)于(yu)(yu)國(guo)(guo)家(jia)標準的(de)(de)(de)(de)(de)先進可(ke)(ke)靠的(de)(de)(de)(de)(de)材料、生(sheng)產(chan)工(gong)(gong)藝(yi)及(ji)(ji)規(gui)范(fan)制造(zao)而成；投標方投標的(de)(de)(de)(de)(de)同(tong)(tong)類設備(bei)應具(ju)有在(zai)國(guo)(guo)內(nei)煤礦機(ji)械(xie)行業(ye)或同(tong)(tong)類行業(ye)二年以(yi)上(shang)的(de)(de)(de)(de)(de)使用(yong)(yong)(yong)經驗(yan)。

給大(da)(da)(da)家介紹下(xia)熱(re)(re)(re)處(chu)理(li)加(jia)熱(re)(re)(re)溫(wen)度(du)(du)(du)三種現象：1、一(yi)(yi)般過(guo)(guo)(guo)熱(re)(re)(re)：熱(re)(re)(re)處(chu)理(li)加(jia)熱(re)(re)(re)溫(wen)度(du)(du)(du)過(guo)(guo)(guo)高(gao)(gao)或(huo)在高(gao)(gao)溫(wen)下(xia)保溫(wen)時(shi)(shi)(shi)間過(guo)(guo)(guo)長(chang)，引起奧(ao)氏(shi)(shi)體(ti)(ti)晶(jing)(jing)(jing)(jing)粒粗(cu)化(hua)(hua)稱為(wei)過(guo)(guo)(guo)熱(re)(re)(re)。粗(cu)大(da)(da)(da)的(de)(de)(de)奧(ao)氏(shi)(shi)體(ti)(ti)晶(jing)(jing)(jing)(jing)粒會(hui)導致鋼(gang)的(de)(de)(de)強韌性(xing)(xing)降低，脆性(xing)(xing)轉(zhuan)變溫(wen)度(du)(du)(du)升高(gao)(gao)，增加(jia)淬(cui)(cui)火(huo)時(shi)(shi)(shi)的(de)(de)(de)變形開裂(lie)(lie)傾向。而導致過(guo)(guo)(guo)熱(re)(re)(re)的(de)(de)(de)原因是爐(lu)溫(wen)儀表失控或(huo)混料（常(chang)為(wei)不懂工(gong)藝發生的(de)(de)(de)）。過(guo)(guo)(guo)熱(re)(re)(re)組(zu)織可經退(tui)火(huo)、正火(huo)或(huo)多(duo)次高(gao)(gao)溫(wen)回(hui)火(huo)后，在正常(chang)情況下(xia)重新奧(ao)氏(shi)(shi)化(hua)(hua)使晶(jing)(jing)(jing)(jing)粒細(xi)化(hua)(hua)。 2、斷(duan)(duan)口(kou)遺(yi)傳：熱(re)(re)(re)處(chu)理(li)有(you)過(guo)(guo)(guo)熱(re)(re)(re)組(zu)織的(de)(de)(de)鋼(gang)材(cai)，重新加(jia)熱(re)(re)(re)淬(cui)(cui)火(huo)后，雖能使奧(ao)氏(shi)(shi)體(ti)(ti)晶(jing)(jing)(jing)(jing)粒細(xi)化(hua)(hua)，但(dan)有(you)時(shi)(shi)(shi)仍出現粗(cu)大(da)(da)(da)顆粒狀斷(duan)(duan)口(kou)。產生斷(duan)(duan)口(kou)遺(yi)傳的(de)(de)(de)理(li)論爭議較多(duo)，一(yi)(yi)般認為(wei)曾因加(jia)熱(re)(re)(re)溫(wen)度(du)(du)(du)過(guo)(guo)(guo)高(gao)(gao)而使MnS之類的(de)(de)(de)雜物(wu)溶入奧(ao)氏(shi)(shi)體(ti)(ti)并富集于晶(jing)(jing)(jing)(jing)界(jie)面，而冷卻時(shi)(shi)(shi)這(zhe)些夾(jia)雜物(wu)又會(hui)沿晶(jing)(jing)(jing)(jing)界(jie)面析出，受(shou)沖擊(ji)時(shi)(shi)(shi)易沿粗(cu)大(da)(da)(da)奧(ao)氏(shi)(shi)體(ti)(ti)晶(jing)(jing)(jing)(jing)界(jie)斷(duan)(duan)裂(lie)(lie)。 3 粗(cu)大(da)(da)(da)組(zu)織的(de)(de)(de)遺(yi)傳：有(you)粗(cu)大(da)(da)(da)馬氏(shi)(shi)體(ti)(ti)、貝氏(shi)(shi)體(ti)(ti)、魏氏(shi)(shi)體(ti)(ti)組(zu)織的(de)(de)(de)鋼(gang)件重新奧(ao)氏(shi)(shi)化(hua)(hua)時(shi)(shi)(shi)，以(yi)慢速加(jia)熱(re)(re)(re)到(dao)常(chang)規(gui)的(de)(de)(de)淬(cui)(cui)火(huo)溫(wen)度(du)(du)(du)，甚至再低一(yi)(yi)些，其(qi)奧(ao)氏(shi)(shi)體(ti)(ti)晶(jing)(jing)(jing)(jing)粒仍然是粗(cu)大(da)(da)(da)的(de)(de)(de)，這(zhe)種現象稱為(wei)組(zu)織遺(yi)傳性(xing)(xing)。要(yao)消(xiao)除(chu)粗(cu)大(da)(da)(da)組(zu)織的(de)(de)(de)遺(yi)傳性(xing)(xing)，可采(cai)用中(zhong)間退(tui)火(huo)或(huo)多(duo)次高(gao)(gao)溫(wen)回(hui)火(huo)處(chu)理(li)。

無錫燃氣爐價格有高有低，接下來我們來看一下，氮化爐的安全操作步驟：1.滲氮前的氣體氮化爐必須是先經過正火或調質處理過的工件。先用汽油和酒精擦洗氣體氮化爐工件表面，不得有銹斑、油污、臟物存在。裝入爐內后，對稱擰緊爐蓋壓緊螺栓。2.將爐罐和爐蓋進水口通入冷卻水進行循環水冷。爐蓋上管道冷卻水下端為進水，上端為出水，爐罐單獨進水，單獨排水，氣體氮化爐爐蓋所有水管可按低進高出原則串聯，由一個口進水，一個口排水。3.專業燃氣爐升(sheng)溫(wen)(wen)前應先送氮氣(qi)(qi)(qi)排(pai)(pai)(pai)氣(qi)(qi)(qi)，排(pai)(pai)(pai)氣(qi)(qi)(qi)時流(liu)量(liang)(liang)應比使用(yong)時大(da)一(yi)(yi)倍以上。排(pai)(pai)(pai)氣(qi)(qi)(qi)10分鐘后，將控(kong)溫(wen)(wen)儀表設定到150℃，自動(dong)加(jia)熱開(kai)關撥(bo)向(xiang)開(kai)，氣(qi)(qi)(qi)體氮化(hua)爐邊(bian)排(pai)(pai)(pai)氣(qi)(qi)(qi)邊(bian)加(jia)熱150℃保(bao)持(chi)2h排(pai)(pai)(pai)氣(qi)(qi)(qi)，再(zai)將控(kong)溫(wen)(wen)儀表設定到530℃，把氨(an)氣(qi)(qi)(qi)流(liu)量(liang)(liang)調小(xiao)，保(bao)持(chi)爐內正(zheng)壓(ya)。4.排(pai)(pai)(pai)氣(qi)(qi)(qi)口有較(jiao)小(xiao)氣(qi)(qi)(qi)流(liu)向(xiang)上的壓(ya)力，當爐溫(wen)(wen)升(sheng)到530℃時，恒(heng)溫(wen)(wen)恒(heng)流(liu)滲氮3-20h，再(zai)將氨(an)氣(qi)(qi)(qi)壓(ya)力調大(da)一(yi)(yi)點(dian)，讓(rang)排(pai)(pai)(pai)氣(qi)(qi)(qi)維(wei)(wei)持(chi)適(shi)(shi)中(zhong)(zhong)壓(ya)力，滲氮4-70h， 再(zai)將氨(an)氣(qi)(qi)(qi)壓(ya)力調小(xiao)，退氮1-2h，切斷電(dian)源(yuan)，給少(shao)量(liang)(liang)氨(an)氣(qi)(qi)(qi)，使爐內維(wei)(wei)持(chi)正(zheng)壓(ya)。5.排(pai)(pai)(pai)氣(qi)(qi)(qi)口有較(jiao)小(xiao)氣(qi)(qi)(qi)流(liu)向(xiang)上的壓(ya)力，當爐溫(wen)(wen)升(sheng)到530℃時，恒(heng)溫(wen)(wen)恒(heng)流(liu)滲氮3-20h，再(zai)將氨(an)氣(qi)(qi)(qi)壓(ya)力調大(da)一(yi)(yi)點(dian)，讓(rang)排(pai)(pai)(pai)氣(qi)(qi)(qi)維(wei)(wei)持(chi)適(shi)(shi)中(zhong)(zhong)壓(ya)力，滲氮4-70h， 再(zai)將氨(an)氣(qi)(qi)(qi)壓(ya)力調小(xiao)，退氮1-2h，切斷電(dian)源(yuan)。

裝爐(lu)要(yao)求(qiu)：1、裝爐(lu)前必(bi)(bi)(bi)須(xu)對(dui)爐(lu)內灰(hui)塵，雜質清理干凈。2、工(gong)(gong)(gong)件(jian)必(bi)(bi)(bi)須(xu)從底層向(xiang)(xiang)上(shang)層的順序裝爐(lu)（以(yi)防工(gong)(gong)(gong)件(jian)掉落危險）。3、工(gong)(gong)(gong)件(jian)短(duan)頭放(fang)在(zai)(zai)圓(yuan)形(xing)墊塊后(hou)(hou)再(zai)推進工(gong)(gong)(gong)作圓(yuan)盤(pan)內，有小孔的面朝里。4、工(gong)(gong)(gong)件(jian)的位(wei)置以(yi)前一(yi)次裝爐(lu)位(wei)置相同（大約200支/爐(lu)）。5、工(gong)(gong)(gong)件(jian)裝爐(lu)完(wan)成后(hou)(hou)，必(bi)(bi)(bi)須(xu)用(yong)酒精對(dui)白色密封圈(quan)擦洗(xi)干凈。6、用(yong)行車將爐(lu)罐小心(xin)吊(diao)起(qi)，到達安全高度后(hou)(hou)，移動至(zhi)爐(lu)體(ti)正上(shang)方，待穩定后(hou)(hou)緩慢(man)下降，裝爐(lu)完(wan)成。二、開(kai)爐(lu)接通電源前必(bi)(bi)(bi)須(xu)檢查(cha)事項：1、爐(lu)體(ti)冷卻(que)水循(xun)環(huan)必(bi)(bi)(bi)須(xu)開(kai)啟（閥(fa)在(zai)(zai)水平(ping)狀態(tai)為開(kai)，垂(chui)直狀態(tai)為關(guan)）。2、真空泵蝶閥(fa)必(bi)(bi)(bi)須(xu)在(zai)(zai)關(guan)閉狀態(tai)。3、氨氣罐，二氧化碳罐要(yao)在(zai)(zai)關(guan)閉狀態(tai)。4、陽(yang)極快速(su)接頭要(yao)連接在(zai)(zai)爐(lu)體(ti)上(shang)（和水冷卻(que)管在(zai)(zai)一(yi)起(qi)的綠線接頭）。5、黑色脈(mo)沖控制盤(pan)上(shang) “電壓(ya)”旋鈕，“占空比”旋鈕要(yao)旋轉(zhuan)到左邊最小值。6、黃色氨氣換向(xiang)(xiang)閥(fa)手柄在(zai)(zai)中間（向(xiang)(xiang)上(shang)）位(wei)置。