價格有(you)高有(you)低(di),接(jie)下來我們來看(kan)一(yi)(yi)(yi)下,氮(dan)(dan)(dan)化(hua)(hua)爐(lu)(lu)(lu)(lu)(lu)的(de)(de)(de)安全(quan)操作步(bu)驟(zou):1.滲(shen)氮(dan)(dan)(dan)前(qian)的(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)氮(dan)(dan)(dan)化(hua)(hua)爐(lu)(lu)(lu)(lu)(lu)必須是先(xian)經過正火(huo)或調(diao)(diao)質處理過的(de)(de)(de)工件。先(xian)用汽油和(he)酒(jiu)精擦洗氣(qi)(qi)(qi)(qi)體(ti)(ti)氮(dan)(dan)(dan)化(hua)(hua)爐(lu)(lu)(lu)(lu)(lu)工件表(biao)面(mian),不(bu)得有(you)銹斑、油污、臟物存在(zai)。裝入爐(lu)(lu)(lu)(lu)(lu)內(nei)后,對稱擰緊(jin)爐(lu)(lu)(lu)(lu)(lu)蓋(gai)壓(ya)(ya)緊(jin)螺栓。2.將爐(lu)(lu)(lu)(lu)(lu)罐(guan)和(he)爐(lu)(lu)(lu)(lu)(lu)蓋(gai)進水(shui)(shui)口(kou)通(tong)入冷卻(que)水(shui)(shui)進行循環水(shui)(shui)冷。爐(lu)(lu)(lu)(lu)(lu)蓋(gai)上(shang)(shang)管道冷卻(que)水(shui)(shui)下端為進水(shui)(shui),上(shang)(shang)端為出水(shui)(shui),爐(lu)(lu)(lu)(lu)(lu)罐(guan)單獨進水(shui)(shui),單獨排(pai)(pai)(pai)水(shui)(shui),氣(qi)(qi)(qi)(qi)體(ti)(ti)氮(dan)(dan)(dan)化(hua)(hua)爐(lu)(lu)(lu)(lu)(lu)爐(lu)(lu)(lu)(lu)(lu)蓋(gai)所(suo)有(you)水(shui)(shui)管可按低(di)進高出原則串(chuan)聯,由一(yi)(yi)(yi)個(ge)口(kou)進水(shui)(shui),一(yi)(yi)(yi)個(ge)口(kou)排(pai)(pai)(pai)水(shui)(shui)。3.升溫(wen)前(qian)應(ying)先(xian)送氮(dan)(dan)(dan)氣(qi)(qi)(qi)(qi)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi),排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)時(shi)(shi)流量(liang)應(ying)比使用時(shi)(shi)大(da)一(yi)(yi)(yi)倍以上(shang)(shang)。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)10分(fen)鐘(zhong)后,將控溫(wen)儀表(biao)設(she)定(ding)到150℃,自動加(jia)熱(re)開關撥向開,氣(qi)(qi)(qi)(qi)體(ti)(ti)氮(dan)(dan)(dan)化(hua)(hua)爐(lu)(lu)(lu)(lu)(lu)邊(bian)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)邊(bian)加(jia)熱(re)150℃保持2h排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi),再將控溫(wen)儀表(biao)設(she)定(ding)到530℃,把氨氣(qi)(qi)(qi)(qi)流量(liang)調(diao)(diao)小(xiao),保持爐(lu)(lu)(lu)(lu)(lu)內(nei)正壓(ya)(ya)。4.排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)口(kou)有(you)較小(xiao)氣(qi)(qi)(qi)(qi)流向上(shang)(shang)的(de)(de)(de)壓(ya)(ya)力(li)(li)(li),當爐(lu)(lu)(lu)(lu)(lu)溫(wen)升到530℃時(shi)(shi),恒溫(wen)恒流滲(shen)氮(dan)(dan)(dan)3-20h,再將氨氣(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)調(diao)(diao)大(da)一(yi)(yi)(yi)點,讓(rang)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)維持適中壓(ya)(ya)力(li)(li)(li),滲(shen)氮(dan)(dan)(dan)4-70h, 再將氨氣(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)調(diao)(diao)小(xiao),退(tui)氮(dan)(dan)(dan)1-2h,切(qie)斷電源,給少量(liang)氨氣(qi)(qi)(qi)(qi),使爐(lu)(lu)(lu)(lu)(lu)內(nei)維持正壓(ya)(ya)。5.排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)口(kou)有(you)較小(xiao)氣(qi)(qi)(qi)(qi)流向上(shang)(shang)的(de)(de)(de)壓(ya)(ya)力(li)(li)(li),當爐(lu)(lu)(lu)(lu)(lu)溫(wen)升到530℃時(shi)(shi),恒溫(wen)恒流滲(shen)氮(dan)(dan)(dan)3-20h,再將氨氣(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)調(diao)(diao)大(da)一(yi)(yi)(yi)點,讓(rang)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)維持適中壓(ya)(ya)力(li)(li)(li),滲(shen)氮(dan)(dan)(dan)4-70h, 再將氨氣(qi)(qi)(qi)(qi)壓(ya)(ya)力(li)(li)(li)調(diao)(diao)小(xiao),退(tui)氮(dan)(dan)(dan)1-2h,切(qie)斷電源。
吹主回保(bao)險怎(zen)么解決:1.滲氮前的模具必(bi)須是先經過(guo)正火或調質處理過(guo)的工(gong)(gong)件。2.先用(yong)汽油和酒精(jing)擦洗工(gong)(gong)件表(biao)(biao)面(mian),不得有銹斑、油污、臟物存(cun)在。3.裝入爐(lu)(lu)(lu)內后,對稱擰緊(jin)爐(lu)(lu)(lu)蓋(gai)(gai)壓(ya)緊(jin)螺栓。4.將(jiang)爐(lu)(lu)(lu)罐和爐(lu)(lu)(lu)蓋(gai)(gai)進(jin)(jin)水(shui)(shui)(shui)口通(tong)入冷卻水(shui)(shui)(shui)進(jin)(jin)行循(xun)環水(shui)(shui)(shui)冷。爐(lu)(lu)(lu)蓋(gai)(gai)上(shang)(shang)管道冷卻水(shui)(shui)(shui)下端(duan)為進(jin)(jin)水(shui)(shui)(shui),上(shang)(shang)端(duan)為出水(shui)(shui)(shui),爐(lu)(lu)(lu)罐單獨進(jin)(jin)水(shui)(shui)(shui),單獨排(pai)(pai)水(shui)(shui)(shui),爐(lu)(lu)(lu)蓋(gai)(gai)所有水(shui)(shui)(shui)管可按(an)低(di)進(jin)(jin)高出原則串聯(lian),由一個口進(jin)(jin)水(shui)(shui)(shui),一個口排(pai)(pai)水(shui)(shui)(shui)。5.升(sheng)溫前應先送氮氣(qi)排(pai)(pai)氣(qi),排(pai)(pai)氣(qi)時(shi)(shi)流量應比使(shi)用(yong)時(shi)(shi)大一倍以上(shang)(shang)。排(pai)(pai)氣(qi)10分(fen)鐘后,將(jiang)控溫儀(yi)表(biao)(biao)設(she)定到150℃,自動加(jia)熱(re)開(kai)關撥向開(kai),邊(bian)排(pai)(pai)氣(qi)邊(bian)加(jia)熱(re)150℃保(bao)持(chi)2h排(pai)(pai)氣(qi),再將(jiang)控溫儀(yi)表(biao)(biao)設(she)定到530℃,把氨氣(qi)流量調小(xiao),保(bao) 持(chi)爐(lu)(lu)(lu)內正壓(ya),排(pai)(pai)氣(qi)口有較小(xiao)氣(qi)流向上(shang)(shang)的壓(ya)力(li),當爐(lu)(lu)(lu)溫升(sheng)到530℃時(shi)(shi),恒溫恒流滲氮3-20h,再將(jiang)氨氣(qi)壓(ya)力(li)調大一點,讓排(pai)(pai)氣(qi)維持(chi)適中(zhong)壓(ya)力(li),滲氮4-70h, 再將(jiang)氨氣(qi)壓(ya)力(li)調小(xiao),退氮1-2h,切斷電(dian)源,停(ting)止加(jia)熱(re),給(gei)少量氨氣(qi),使(shi)爐(lu)(lu)(lu)內維持(chi)正壓(ya),待爐(lu)(lu)(lu)溫降到150℃以下方可停(ting)止供(gong)氨出爐(lu)(lu)(lu)。
給(gei)大(da)(da)家介(jie)紹下多用(yong)(yong)(yong)(yong)(yong)(yong)爐(lu)(lu)(lu)(lu)熱(re)(re)處理的(de)(de)(de)(de)爐(lu)(lu)(lu)(lu)型選(xuan)(xuan)(xuan)擇: 1.對于不能成批(pi)(pi)定型生(sheng)產(chan)(chan)的(de)(de)(de)(de),工件(jian)(jian)(jian)(jian)大(da)(da)小(xiao)(xiao)不相(xiang)等(deng)的(de)(de)(de)(de),種類(lei)較多的(de)(de)(de)(de),要求工藝上具有通用(yong)(yong)(yong)(yong)(yong)(yong)性(xing)、多用(yong)(yong)(yong)(yong)(yong)(yong)性(xing)的(de)(de)(de)(de),可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)箱式(shi)(shi)(shi)多用(yong)(yong)(yong)(yong)(yong)(yong)爐(lu)(lu)(lu)(lu)。2.加熱(re)(re)長軸(zhou)類(lei)及(ji)長的(de)(de)(de)(de)絲(si)桿,管(guan)子(zi)等(deng)工件(jian)(jian)(jian)(jian)時(shi),可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)深(shen)井式(shi)(shi)(shi)電爐(lu)(lu)(lu)(lu)。3.小(xiao)(xiao)批(pi)(pi)量的(de)(de)(de)(de)滲(shen)碳(tan)零(ling)件(jian)(jian)(jian)(jian),可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)井式(shi)(shi)(shi)氣體滲(shen)碳(tan)爐(lu)(lu)(lu)(lu)。4.對于大(da)(da)批(pi)(pi)量的(de)(de)(de)(de)汽(qi)車、拖拉機(ji)齒輪(lun)等(deng)零(ling)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)生(sheng)產(chan)(chan)可(ke)選(xuan)(xuan)(xuan)連續式(shi)(shi)(shi)滲(shen)碳(tan)生(sheng)產(chan)(chan)線或箱式(shi)(shi)(shi)多用(yong)(yong)(yong)(yong)(yong)(yong)爐(lu)(lu)(lu)(lu)。5.對沖(chong)壓件(jian)(jian)(jian)(jian)板(ban)材坯料的(de)(de)(de)(de)加熱(re)(re)大(da)(da)批(pi)(pi)量生(sheng)產(chan)(chan)時(shi),最(zui)好選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)滾動(dong)爐(lu)(lu)(lu)(lu),輥底爐(lu)(lu)(lu)(lu)。6.對成批(pi)(pi)的(de)(de)(de)(de)定型零(ling)件(jian)(jian)(jian)(jian),生(sheng)產(chan)(chan)上可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)推(tui)桿式(shi)(shi)(shi)或傳送帶(dai)式(shi)(shi)(shi)電阻爐(lu)(lu)(lu)(lu)(推(tui)桿爐(lu)(lu)(lu)(lu)或鑄帶(dai)爐(lu)(lu)(lu)(lu))7.小(xiao)(xiao)型機(ji)械零(ling)件(jian)(jian)(jian)(jian)如(ru):螺釘,螺母等(deng)可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)振底式(shi)(shi)(shi)爐(lu)(lu)(lu)(lu)或網帶(dai)式(shi)(shi)(shi)爐(lu)(lu)(lu)(lu)。8.鋼(gang)球及(ji)滾柱熱(re)(re)處理可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)(yong)(yong)(yong)(yong)內螺旋(xuan)的(de)(de)(de)(de)回轉(zhuan)管(guan)爐(lu)(lu)(lu)(lu)。9.有色(se)金屬錠坯在大(da)(da)批(pi)(pi)量生(sheng)產(chan)(chan)時(shi)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)推(tui)桿式(shi)(shi)(shi)爐(lu)(lu)(lu)(lu),而對有色(se)金屬小(xiao)(xiao)零(ling)件(jian)(jian)(jian)(jian)及(ji)材料可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)空(kong)氣循環加熱(re)(re)爐(lu)(lu)(lu)(lu)。
供應深井爐脈沖電源是全逆變式,頻率可以達到20KHz。頻率高有以下好處:1. 溫度均勻性好,表面電流密度分布的更均勻,有利于改善爐內產品溫度均勻性,尤其是針對一些氮化面積較大的產品效果顯著。2.湖北深井爐滲氮(dan)(dan)(dan)(dan)速度快(kuai),淺滲層(ceng)滲氮(dan)(dan)(dan)(dan)速度快(kuai),因(yin)為(wei)(wei)轟擊頻率高,金屬表(biao)面活化鐵(tie)離子(zi)密(mi)度高,與氮(dan)(dan)(dan)(dan)離子(zi)結(jie)合速度快(kuai),提(ti)高滲速。3. 弱(ruo)化空心陰(yin)極(ji)效應,弱(ruo)化空心陰(yin)極(ji)效應,尤其是針對(dui)一些尖角、孔洞比較多的(de)(de)產(chan)品,有(you)明顯的(de)(de)改(gai)善(shan)效果(guo)。4.降低產(chan)品灼(zhuo)(zhuo)傷風險,增強(qiang)了打弧關斷頻率,減少因(yin)為(wei)(wei)工(gong)件(jian)表(biao)面打弧導致的(de)(de)產(chan)品灼(zhuo)(zhuo)傷風險。5.清(qing)理作用(yong),對(dui)工(gong)件(jian)表(biao)面有(you)較強(qiang)的(de)(de)清(qing)理作用(yong),氮(dan)(dan)(dan)(dan)化后產(chan)品外觀好。6.對(dui)公共電網(wang)沖(chong)擊少,因(yin)為(wei)(wei)開關速度快(kuai),對(dui)電源及電網(wang)的(de)(de)沖(chong)擊少。