這是一種能夠應用在熱處理的方面并且在近幾年使用的非常廣泛，并且發展的非常好的一種極其，就是因為有了低壓真空滲碳爐之后才能夠讓我們的工作效率有所提高，那么對于低壓真空滲碳爐來說你知道它進行工作時的介質是什么嗎？常州燃氣爐可選用乙炔也可選用丙烷。燃氣爐價格有(you)時采購(gou)不到乙炔就用(yong)(yong)(yong)丙烷代替(ti)。但是在長(chang)時間的(de)(de)(de)(de)生(sheng)產(chan)中發現(xian)，丙烷非(fei)常容易產(chan)生(sheng)焦油，造成工件與(yu)工裝接觸(chu)的(de)(de)(de)(de)區域(yu)沒有(you)硬化(hua)層。對(dui)于其余的(de)(de)(de)(de)區域(yu)沒有(you)問題。停爐對(dui)噴嘴(zui)進行(xing)清理，選(xuan)用(yong)(yong)(yong)乙炔處理再也(ye)沒有(you)出現(xian)類似的(de)(de)(de)(de)情(qing)況。現(xian)在我們(men)(men)已經知道(dao)了(le)(le)低(di)(di)壓真空滲碳(tan)爐的(de)(de)(de)(de)工作介質(zhi)是什(shen)么，這樣的(de)(de)(de)(de)話也(ye)能夠(gou)讓我們(men)(men)更加放心(xin)的(de)(de)(de)(de)進行(xing)使用(yong)(yong)(yong)了(le)(le)，對(dui)于低(di)(di)壓真空滲碳(tan)爐來說也(ye)會分為很(hen)多種(zhong)不同(tong)的(de)(de)(de)(de)類型，我們(men)(men)可以(yi)根(gen)據(ju)使用(yong)(yong)(yong)環境和(he)特(te)點(dian)的(de)(de)(de)(de)不同(tong)進行(xing)選(xuan)擇，只要滿足我們(men)(men)的(de)(de)(de)(de)要求(qiu)就可以(yi)了(le)(le)。

具有處理溫度低(di)，時(shi)間短，工件(jian)變形小的(de)特點，性質：高(gao)疲勞極限和良好的(de)耐磨(mo)性。1.滲氮(dan)(dan)(dan)(dan)前(qian)的(de)氣(qi)(qi)體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)必須是先經過(guo)正火或(huo)調(diao)質處理過(guo)的(de)工件(jian)。2.先用(yong)汽油和酒精擦洗氣(qi)(qi)體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)工件(jian)表(biao)面，不得有銹(xiu)斑、油污、臟物存在。3.裝入(ru)(ru)爐(lu)內后，對稱(cheng)擰緊(jin)爐(lu)蓋(gai)(gai)(gai)壓緊(jin)螺栓。4.將(jiang)爐(lu)罐(guan)和爐(lu)蓋(gai)(gai)(gai)進水(shui)口通入(ru)(ru)冷(leng)卻(que)水(shui)進行循(xun)環水(shui)冷(leng)。爐(lu)蓋(gai)(gai)(gai)上(shang)管道冷(leng)卻(que)水(shui)下端(duan)為進水(shui)，上(shang)端(duan)為出水(shui)，爐(lu)罐(guan)單獨(du)進水(shui)，單獨(du)排(pai)(pai)水(shui)，氣(qi)(qi)體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)爐(lu)蓋(gai)(gai)(gai)所有水(shui)管可按(an)低(di)進高(gao)出原則串聯，由一(yi)(yi)個口進水(shui)，一(yi)(yi)個口排(pai)(pai)水(shui)。5.氣(qi)(qi)體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)升溫前(qian)應先送氮(dan)(dan)(dan)(dan)氣(qi)(qi)排(pai)(pai)氣(qi)(qi)，排(pai)(pai)氣(qi)(qi)時(shi)流(liu)(liu)量(liang)應比使用(yong)時(shi)大(da)一(yi)(yi)倍(bei)以(yi)(yi)上(shang)。排(pai)(pai)氣(qi)(qi)10分鐘后，將(jiang)控(kong)(kong)溫儀表(biao)設定(ding)到(dao)(dao)150℃，自動加熱(re)開關(guan)撥向開，氣(qi)(qi)體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)邊排(pai)(pai)氣(qi)(qi)邊加熱(re)150℃保持(chi)(chi)2h排(pai)(pai)氣(qi)(qi)，再將(jiang)控(kong)(kong)溫儀表(biao)設定(ding)到(dao)(dao)530℃，把(ba)氨(an)(an)氣(qi)(qi)流(liu)(liu)量(liang)調(diao)小，保持(chi)(chi)爐(lu)內正壓，排(pai)(pai)氣(qi)(qi)口有較小氣(qi)(qi)流(liu)(liu)向上(shang)的(de)壓力(li)(li)，當(dang)爐(lu)溫升到(dao)(dao)530℃時(shi)，恒溫恒流(liu)(liu)滲氮(dan)(dan)(dan)(dan)3-20h，再將(jiang)氨(an)(an)氣(qi)(qi)壓力(li)(li)調(diao)大(da)一(yi)(yi)點，讓排(pai)(pai)氣(qi)(qi)維持(chi)(chi)適中壓力(li)(li)，滲氮(dan)(dan)(dan)(dan)4-70h， 再將(jiang)氨(an)(an)氣(qi)(qi)壓力(li)(li)調(diao)小，退氮(dan)(dan)(dan)(dan)1-2h，切斷電源，給少量(liang)氨(an)(an)氣(qi)(qi)，使爐(lu)內維持(chi)(chi)正壓，待爐(lu)溫降(jiang)到(dao)(dao)150℃以(yi)(yi)下方可停止供(gong)氨(an)(an)出爐(lu)。

為大(da)(da)家介紹一下井式滲碳(tan)爐具有(you)哪些優勢(shi)？產品無(wu)內氧化，變(bian)形(xing)小。滲層控制精度高，計算(suan)機模擬控制精度可(ke)(ke)達±0.05mm;處理后產品表面(mian)呈(cheng)銀(yin)灰色光亮(liang)狀(zhuang)，可(ke)(ke)不(bu)(bu)(bu)經清洗、清理拋(pao)丸工(gong)序；在(zai)低(di)壓(ya)和(he)高溫狀(zhuang)態下，滲碳(tan)過程可(ke)(ke)以大(da)(da)大(da)(da)縮短(duan)，輔(fu)助消耗大(da)(da)為減少(shao)；無(wu)火簾，無(wu)排氣口，無(wu)油煙，無(wu)油槽，加(jia)熱室采用(yong)(yong)(yong)(yong)冷壁型爐體設(she)計，對環境影響小；可(ke)(ke)用(yong)(yong)(yong)(yong)于不(bu)(bu)(bu)同產量(liang)及不(bu)(bu)(bu)同熱處理方式，每個滲碳(tan)室相當于一臺多用(yong)(yong)(yong)(yong)爐。這是(shi)由于具有(you)這樣(yang)的(de)優勢(shi)才(cai)會取代(dai)傳統的(de)設(she)備得到(dao)使用(yong)(yong)(yong)(yong)的(de)廣泛性，而且(qie)低(di)壓(ya)真空滲碳(tan)爐廠家的(de)人可(ke)(ke)以告(gao)訴我們(men)，現(xian)在(zai)這種類型的(de)設(she)備已經是(shi)成為了主流的(de)產品，而且(qie)隨(sui)著低(di)壓(ya)真空滲碳(tan)爐的(de)性能不(bu)(bu)(bu)斷被挖掘，相信以后使用(yong)(yong)(yong)(yong)的(de)領域也是(shi)會不(bu)(bu)(bu)斷的(de)擴大(da)(da)。

給大家介紹下常用(yong)(yong)(yong)(yong)熱處(chu)(chu)理多(duo)(duo)用(yong)(yong)(yong)(yong)爐(lu)(lu)(lu)爐(lu)(lu)(lu)型的(de)(de)(de)選擇：1．對(dui)于(yu)不能(neng)成批(pi)定(ding)型生產(chan)(chan)的(de)(de)(de)，工件(jian)(jian)(jian)大小(xiao)(xiao)不相等(deng)(deng)(deng)的(de)(de)(de)，種類(lei)較多(duo)(duo)的(de)(de)(de)，要求工藝(yi)上具有通用(yong)(yong)(yong)(yong)性、多(duo)(duo)用(yong)(yong)(yong)(yong)性的(de)(de)(de)，可選用(yong)(yong)(yong)(yong)箱式(shi)(shi)(shi)多(duo)(duo)用(yong)(yong)(yong)(yong)爐(lu)(lu)(lu)。2．加熱長軸類(lei)及長的(de)(de)(de)絲桿，管子等(deng)(deng)(deng)工件(jian)(jian)(jian)時，可選用(yong)(yong)(yong)(yong)深井(jing)式(shi)(shi)(shi)電(dian)爐(lu)(lu)(lu)。3．小(xiao)(xiao)批(pi)量(liang)的(de)(de)(de)滲(shen)碳零(ling)(ling)(ling)件(jian)(jian)(jian)，可選用(yong)(yong)(yong)(yong)井(jing)式(shi)(shi)(shi)氣(qi)體滲(shen)碳爐(lu)(lu)(lu)。4．對(dui)于(yu)大批(pi)量(liang)的(de)(de)(de)汽車、拖拉機齒輪等(deng)(deng)(deng)零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)生產(chan)(chan)可選連(lian)續式(shi)(shi)(shi)滲(shen)碳生產(chan)(chan)線(xian)或箱式(shi)(shi)(shi)多(duo)(duo)用(yong)(yong)(yong)(yong)爐(lu)(lu)(lu)。5．對(dui)沖壓件(jian)(jian)(jian)板(ban)材坯(pi)料的(de)(de)(de)加熱大批(pi)量(liang)生產(chan)(chan)時，最好選用(yong)(yong)(yong)(yong)滾動(dong)爐(lu)(lu)(lu)，輥(gun)底爐(lu)(lu)(lu)。6．對(dui)成批(pi)的(de)(de)(de)定(ding)型零(ling)(ling)(ling)件(jian)(jian)(jian)，生產(chan)(chan)上可選用(yong)(yong)(yong)(yong)推(tui)桿式(shi)(shi)(shi)或傳(chuan)送帶式(shi)(shi)(shi)電(dian)阻爐(lu)(lu)(lu)（推(tui)桿爐(lu)(lu)(lu)或鑄帶爐(lu)(lu)(lu)）7．小(xiao)(xiao)型機械零(ling)(ling)(ling)件(jian)(jian)(jian)如(ru)：螺(luo)(luo)釘，螺(luo)(luo)母等(deng)(deng)(deng)可選用(yong)(yong)(yong)(yong)振底式(shi)(shi)(shi)爐(lu)(lu)(lu)或網帶式(shi)(shi)(shi)爐(lu)(lu)(lu)。8．鋼(gang)球及滾柱熱處(chu)(chu)理可選用(yong)(yong)(yong)(yong)內螺(luo)(luo)旋(xuan)的(de)(de)(de)回轉(zhuan)管爐(lu)(lu)(lu)。9．有色(se)(se)金(jin)屬(shu)(shu)錠坯(pi)在大批(pi)量(liang)生產(chan)(chan)時可用(yong)(yong)(yong)(yong)推(tui)桿式(shi)(shi)(shi)爐(lu)(lu)(lu)，而(er)對(dui)有色(se)(se)金(jin)屬(shu)(shu)小(xiao)(xiao)零(ling)(ling)(ling)件(jian)(jian)(jian)及材料可用(yong)(yong)(yong)(yong)空氣(qi)循環加熱爐(lu)(lu)(lu)。