通電運(yun)行(xing)步驟:1、打(da)(da)開(kai)氮化爐(lu)(lu)(lu)總控(kong)(kong)(kong)電源。2、電柜控(kong)(kong)(kong)制(zhi)(zhi)面(mian)板上(shang)“手動(dong)(dong)/自(zi)動(dong)(dong)” 旋鈕(niu)(niu),打(da)(da)到(dao)(dao)(dao)自(zi)動(dong)(dong)。3、進(jin)入控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)觸(chu)摸屏(ping),點(dian)擊(ji)“(一)打(da)(da)弧(hu)(hu)參(can)數(shu)設(she)定(ding)(ding)(ding)”,選(xuan)擇開(kai)保溫(wen)(wen)(wen)段數(shu)09,完畢退出。4、點(dian)擊(ji)“(二(er)(er))升(sheng)(sheng)溫(wen)(wen)(wen)保溫(wen)(wen)(wen)參(can)數(shu)設(she)定(ding)(ding)(ding)”,查(cha)看參(can)數(shu)是(shi)否(fou)(fou)正確,9保溫(wen)(wen)(wen)時(shi)間(jian)300min,點(dian)擊(ji)“升(sheng)(sheng)壓(ya)保壓(ya)參(can)數(shu)設(she)定(ding)(ding)(ding)”,5到(dao)(dao)(dao)達(da)壓(ya)力350Pa。5、進(jin)入系(xi)統(tong)運(yun)行(xing),選(xuan)擇確認(ren)爐(lu)(lu)(lu)體(ti), 1號(hao)(hao)(hao)爐(lu)(lu)(lu)(左(zuo)(zuo)),2號(hao)(hao)(hao)爐(lu)(lu)(lu)(右(you)(you)(you)),若爐(lu)(lu)(lu)體(ti)不(bu)是(shi)要(yao)(yao)工作(zuo)爐(lu)(lu)(lu)體(ti),點(dian)擊(ji)“爐(lu)(lu)(lu)體(ti)切換”,(爐(lu)(lu)(lu)體(ti)工作(zuo)過程中一定(ding)(ding)(ding)不(bu)要(yao)(yao)按爐(lu)(lu)(lu)體(ti)切換按鈕(niu)(niu))。6、抽真(zhen)空(kong)(kong)(kong)(kong):左(zuo)(zuo)上(shang)角系(xi)統(tong)開(kai)始(shi)按鈕(niu)(niu)由(you)紅(hong)色(se)變成綠色(se),真(zhen)空(kong)(kong)(kong)(kong)泵(beng)1(3),2(4)按鈕(niu)(niu)變綠,檢(jian)查(cha)兩個(ge)真(zhen)空(kong)(kong)(kong)(kong)泵(beng)是(shi)否(fou)(fou)都啟(qi)動(dong)(dong)運(yun)轉(zhuan),如有(you)不(bu)運(yun)轉(zhuan),打(da)(da)開(kai)電控(kong)(kong)(kong)柜右(you)(you)(you)下門(men),檢(jian)查(cha)是(shi)否(fou)(fou)跳閘,確認(ren)兩個(ge)真(zhen)空(kong)(kong)(kong)(kong)泵(beng)都已啟(qi)動(dong)(dong)工作(zuo)后(hou)(hou)(hou),打(da)(da)開(kai)真(zhen)空(kong)(kong)(kong)(kong)泵(beng)蝶(die)閥(fa)(之前一定(ding)(ding)(ding)要(yao)(yao)關閉(bi)否(fou)(fou)則真(zhen)空(kong)(kong)(kong)(kong)泵(beng)中油會被(bei)氣(qi)(qi)(qi)壓(ya)壓(ya)進(jin)爐(lu)(lu)(lu)體(ti)),開(kai)始(shi)抽真(zhen)空(kong)(kong)(kong)(kong),當壓(ya)強達(da)到(dao)(dao)(dao)100Pa左(zuo)(zuo)右(you)(you)(you)時(shi),關閉(bi)1(3)號(hao)(hao)(hao)真(zhen)空(kong)(kong)(kong)(kong)泵(beng)蝶(die)閥(fa),當壓(ya)強達(da)到(dao)(dao)(dao)60Pa左(zuo)(zuo)右(you)(you)(you)時(shi),真(zhen)空(kong)(kong)(kong)(kong)泵(beng)1(3)自(zi)動(dong)(dong)關閉(bi)(綠燈熄滅(mie)),高壓(ya)按鈕(niu)(niu)自(zi)動(dong)(dong)開(kai)啟(qi)。7、黑(hei)色(se)脈(mo)沖(chong)控(kong)(kong)(kong)制(zhi)(zhi)盤上(shang),電壓(ya)撥鈕(niu)(niu)打(da)(da)到(dao)(dao)(dao)左(zuo)(zuo)邊(bian)自(zi)動(dong)(dong)撥鈕(niu)(niu),占空(kong)(kong)(kong)(kong)比撥鈕(niu)(niu)打(da)(da)到(dao)(dao)(dao)右(you)(you)(you)邊(bian)自(zi)動(dong)(dong)(自(zi)動(dong)(dong)時(shi)升(sheng)(sheng)溫(wen)(wen)(wen)時(shi)間(jian)長(chang),根(gen)據實(shi)際情況可調為手動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)),電壓(ya)旋鈕(niu)(niu),占空(kong)(kong)(kong)(kong)比旋鈕(niu)(niu)旋轉(zhuan)到(dao)(dao)(dao)右(you)(you)(you)邊(bian)合適(shi)位置(峰(feng)值電流=100~200 ,電流A≤150),爐(lu)(lu)(lu)體(ti)開(kai)始(shi)安全工作(zuo),罐(guan)內工件(jian)開(kai)始(shi)打(da)(da)弧(hu)(hu)。8、滅(mie)弧(hu)(hu)送氨氣(qi)(qi)(qi)爐(lu)(lu)(lu)內溫(wen)(wen)(wen)度到(dao)(dao)(dao)90度,爐(lu)(lu)(lu)罐(guan)內輝光穩定(ding)(ding)(ding)之后(hou)(hou)(hou)(不(bu)閃弧(hu)(hu)),開(kai)氨氣(qi)(qi)(qi)罐(guan),黃色(se)換向閥(fa)打(da)(da)到(dao)(dao)(dao)左(zuo)(zuo)邊(bian)1號(hao)(hao)(hao)爐(lu)(lu)(lu)(右(you)(you)(you)邊(bian)為2號(hao)(hao)(hao)爐(lu)(lu)(lu)),氨氣(qi)(qi)(qi)流量(liang)不(bu)用(yong)調,控(kong)(kong)(kong)制(zhi)(zhi)器會根(gen)據爐(lu)(lu)(lu)內壓(ya)強自(zi)動(dong)(dong)調整。9、加(jia)送二(er)(er)氧化碳氣(qi)(qi)(qi)體(ti)大約(yue)9-10小(xiao)時(shi)后(hou)(hou)(hou)升(sheng)(sheng)溫(wen)(wen)(wen)到(dao)(dao)(dao)500℃時(shi)占空(kong)(kong)(kong)(kong)比撥鈕(niu)(niu)打(da)(da)至(zhi)(zhi)自(zi)動(dong)(dong)狀態(tai),然后(hou)(hou)(hou)繼續升(sheng)(sheng)溫(wen)(wen)(wen)至(zhi)(zhi)510℃到(dao)(dao)(dao)保溫(wen)(wen)(wen)狀態(tai),打(da)(da)開(kai)二(er)(er)氧化碳氣(qi)(qi)(qi)閥(fa),設(she)置屏(ping)幕上(shang)2種(zhong)氣(qi)(qi)(qi)體(ti)流量(liang)比例(比例約(yue)為7%)。
其設(she)備的(de)(de)(de)特點:(1)、氣體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)(lu)處(chu)理溫度低(di),時間(jian)短,工(gong)(gong)件(jian)(jian)變形小。(2)、氣體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)(lu)不受鋼(gang)(gang)種限制,碳鋼(gang)(gang)、低(di)合金鋼(gang)(gang)、工(gong)(gong)模(mo)具(ju)(ju)(ju)鋼(gang)(gang)、不銹鋼(gang)(gang)、鑄鐵及(ji)鐵基粉未冶金材料(liao)均可進行軟(ruan)(ruan)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)處(chu)理。氣體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)(lu)工(gong)(gong)件(jian)(jian)經軟(ruan)(ruan)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)后的(de)(de)(de)表面硬(ying)度與(yu)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)工(gong)(gong)藝及(ji)材料(liao)有關(guan)。(3)、能顯著地提高(gao)(gao)工(gong)(gong)件(jian)(jian)的(de)(de)(de)疲(pi)勞強度、耐(nai)磨性(xing)和耐(nai)腐(fu)蝕(shi)性(xing)。氣體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)(lu)在干(gan)摩擦條件(jian)(jian)下還具(ju)(ju)(ju)有抗擦傷和抗咬(yao)合等性(xing)能。(4)、氣體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)(lu)由(you)于(yu)軟(ruan)(ruan)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)層不存在脆性(xing)相,故氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)層因而具(ju)(ju)(ju)有一(yi)定的(de)(de)(de)韌(ren)性(xing),不容易(yi)剝(bo)落。因此,目前氣體(ti)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)爐(lu)(lu)生產中軟(ruan)(ruan)氮(dan)(dan)(dan)(dan)化(hua)(hua)(hua)已(yi)廣泛(fan)應(ying)用(yong)于(yu)模(mo)具(ju)(ju)(ju)、量具(ju)(ju)(ju)、刀(dao)具(ju)(ju)(ju)(如:高(gao)(gao)速鋼(gang)(gang)刀(dao)具(ju)(ju)(ju))等、曲軸、齒輪、氣缸套、機械結(jie)構件(jian)(jian)等耐(nai)磨工(gong)(gong)件(jian)(jian)的(de)(de)(de)處(chu)理。
所加工(gong)(gong)的(de)(de)低(di)碳(tan)(tan)合金(jin)鋼18Cr2Ni4WA 含有(you)較(jiao)多的(de)(de) Cr、Ni 等(deng)合 金(jin)元素(su),使(shi)用滲(shen)(shen)碳(tan)(tan)爐以后具有(you)良好的(de)(de)力學(xue)和(he)工(gong)(gong)藝(yi)性能,是生產(chan)高速重(zhong)(zhong)載 零(ling)部(bu)(bu)件(jian)的(de)(de)重(zhong)(zhong)要(yao)材料(liao)。高速重(zhong)(zhong)載零(ling)部(bu)(bu)件(jian)的(de)(de)工(gong)(gong)作環境往(wang)(wang)往(wang)(wang) 較(jiao)為惡劣(lie),受力狀(zhuang)態復(fu)雜,復(fu)雜的(de)(de)工(gong)(gong)況不(bu)僅要(yao)求工(gong)(gong)件(jian)表 面具有(you)高的(de)(de)硬度(du)和(he)耐磨性,而且(qie)要(yao)求心部(bu)(bu)有(you)足夠(gou)的(de)(de)強 度(du)和(he)良好的(de)(de)韌性,那么(me)滲(shen)(shen)碳(tan)(tan)爐處(chu)理(li)的(de)(de)工(gong)(gong)藝(yi)是怎(zen)么(me)樣的(de)(de)呢(ni)?1) 18Cr2Ni4WA 鋼滲(shen)(shen)碳(tan)(tan)后,經(jing)高溫回(hui)(hui)火(huo)(huo)、淬(cui)火(huo)(huo)、深 冷和(he)低(di)溫回(hui)(hui)火(huo)(huo)處(chu)理(li)后,滲(shen)(shen)碳(tan)(tan)層深度(du)幾乎不(bu)受影響,表面 殘留奧(ao)氏(shi)(shi)體(ti)(ti)含量(liang)顯(xian)著降低(di),低(di)于(yu)14. 62%。2) 對比兩(liang)種 18Cr2Ni4WA 鋼滲(shen)(shen)碳(tan)(tan)后的(de)(de)熱處(chu)理(li)工(gong)(gong) 藝(yi),經(jing) 680 ℃ × 5 h 兩(liang)次高溫回(hui)(hui)火(huo)(huo) + 860 ℃ 淬(cui)火(huo)(huo) + -115. 3 ℃深冷 + 160 ℃低(di)溫回(hui)(hui)火(huo)(huo)工(gong)(gong)藝(yi)處(chu)理(li)后,試 樣表面硬度(du)為64. 2 HRC,滲(shen)(shen)碳(tan)(tan)層深度(du)為 0. 86 mm,符 合工(gong)(gong)藝(yi)目標。并得到由針狀(zhuang)回(hui)(hui)火(huo)(huo)馬(ma)(ma)氏(shi)(shi)體(ti)(ti)、少量(liang)殘留奧(ao) 氏(shi)(shi)體(ti)(ti)和(he)彌散(san)分(fen)布的(de)(de)顆(ke)粒狀(zhuang)碳(tan)(tan)化物組成的(de)(de)滲(shen)(shen)碳(tan)(tan)層組織(zhi)和(he) 由低(di)碳(tan)(tan)板條狀(zhuang)回(hui)(hui)火(huo)(huo)馬(ma)(ma)氏(shi)(shi)體(ti)(ti)組成的(de)(de)心部(bu)(bu)組織(zhi),兼顧(gu)了滲(shen)(shen) 碳(tan)(tan)層表面的(de)(de)高硬度(du)和(he)心部(bu)(bu)的(de)(de)強韌性。
井式滲氮爐生產給大家介紹下常用熱處理多用爐爐型的選擇:1.井式滲氮爐生產對(dui)于(yu)不(bu)能成(cheng)批(pi)定(ding)型生產的(de)(de)(de),工(gong)件(jian)(jian)大小(xiao)(xiao)不(bu)相等(deng)的(de)(de)(de),種類(lei)較多的(de)(de)(de),要求工(gong)藝上(shang)具有通(tong)用(yong)(yong)(yong)性、多用(yong)(yong)(yong)性的(de)(de)(de),可(ke)(ke)選用(yong)(yong)(yong)箱式(shi)(shi)多用(yong)(yong)(yong)爐(lu)(lu)。2.加(jia)(jia)熱長軸類(lei)及長的(de)(de)(de)絲桿,管子等(deng)工(gong)件(jian)(jian)時,可(ke)(ke)選用(yong)(yong)(yong)深井式(shi)(shi)電爐(lu)(lu)。3.小(xiao)(xiao)批(pi)量(liang)的(de)(de)(de)滲(shen)碳零(ling)(ling)件(jian)(jian),可(ke)(ke)選用(yong)(yong)(yong)井式(shi)(shi)氣(qi)體滲(shen)碳爐(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)零(ling)(ling)件(jian)(jian)的(de)(de)(de)生產可(ke)(ke)選連續式(shi)(shi)滲(shen)碳生產線或箱式(shi)(shi)多用(yong)(yong)(yong)爐(lu)(lu)。5.對(dui)沖壓(ya)件(jian)(jian)板(ban)材坯料(liao)(liao)的(de)(de)(de)加(jia)(jia)熱大批(pi)量(liang)生產時,最好選用(yong)(yong)(yong)滾(gun)動爐(lu)(lu),輥(gun)底(di)爐(lu)(lu)。6.對(dui)成(cheng)批(pi)的(de)(de)(de)定(ding)型零(ling)(ling)件(jian)(jian),生產上(shang)可(ke)(ke)選用(yong)(yong)(yong)推桿式(shi)(shi)或傳送(song)帶式(shi)(shi)電阻(zu)爐(lu)(lu)(推桿爐(lu)(lu)或鑄帶爐(lu)(lu))7.小(xiao)(xiao)型機械零(ling)(ling)件(jian)(jian)如:螺釘,螺母等(deng)可(ke)(ke)選用(yong)(yong)(yong)振(zhen)底(di)式(shi)(shi)爐(lu)(lu)或網帶式(shi)(shi)爐(lu)(lu)。8.鋼球及滾(gun)柱熱處理可(ke)(ke)選用(yong)(yong)(yong)內(nei)螺旋的(de)(de)(de)回轉管爐(lu)(lu)。9.有色金(jin)屬(shu)錠坯在大批(pi)量(liang)生產時可(ke)(ke)用(yong)(yong)(yong)推桿式(shi)(shi)爐(lu)(lu),而對(dui)有色金(jin)屬(shu)小(xiao)(xiao)零(ling)(ling)件(jian)(jian)及材料(liao)(liao)可(ke)(ke)用(yong)(yong)(yong)空氣(qi)循環(huan)加(jia)(jia)熱爐(lu)(lu)。
價格有(you)(you)(you)高(gao)有(you)(you)(you)低,接下來我(wo)們來看一下,氮(dan)(dan)(dan)化(hua)爐(lu)(lu)(lu)的(de)安全操作步驟:1.滲(shen)氮(dan)(dan)(dan)前的(de)氣(qi)(qi)(qi)體(ti)氮(dan)(dan)(dan)化(hua)爐(lu)(lu)(lu)必須是先經過正(zheng)火或調(diao)(diao)質處(chu)理(li)過的(de)工(gong)件。先用(yong)汽油和酒(jiu)精擦洗氣(qi)(qi)(qi)體(ti)氮(dan)(dan)(dan)化(hua)爐(lu)(lu)(lu)工(gong)件表面,不得(de)有(you)(you)(you)銹斑、油污、臟(zang)物(wu)存在。裝(zhuang)入爐(lu)(lu)(lu)內后,對稱擰(ning)緊爐(lu)(lu)(lu)蓋壓(ya)(ya)(ya)緊螺栓。2.將(jiang)爐(lu)(lu)(lu)罐和爐(lu)(lu)(lu)蓋進(jin)水(shui)口通入冷(leng)(leng)卻水(shui)進(jin)行循(xun)環水(shui)冷(leng)(leng)。爐(lu)(lu)(lu)蓋上(shang)管(guan)道冷(leng)(leng)卻水(shui)下端為進(jin)水(shui),上(shang)端為出水(shui),爐(lu)(lu)(lu)罐單(dan)獨(du)進(jin)水(shui),單(dan)獨(du)排水(shui),氣(qi)(qi)(qi)體(ti)氮(dan)(dan)(dan)化(hua)爐(lu)(lu)(lu)爐(lu)(lu)(lu)蓋所有(you)(you)(you)水(shui)管(guan)可(ke)按低進(jin)高(gao)出原(yuan)則串聯,由(you)一個(ge)口進(jin)水(shui),一個(ge)口排水(shui)。3.升溫(wen)(wen)前應(ying)先送氮(dan)(dan)(dan)氣(qi)(qi)(qi)排氣(qi)(qi)(qi),排氣(qi)(qi)(qi)時(shi)流(liu)(liu)量(liang)應(ying)比使用(yong)時(shi)大(da)(da)一倍以上(shang)。排氣(qi)(qi)(qi)10分鐘后,將(jiang)控(kong)溫(wen)(wen)儀表設定到(dao)150℃,自動加熱(re)開(kai)(kai)關(guan)撥向開(kai)(kai),氣(qi)(qi)(qi)體(ti)氮(dan)(dan)(dan)化(hua)爐(lu)(lu)(lu)邊(bian)排氣(qi)(qi)(qi)邊(bian)加熱(re)150℃保持2h排氣(qi)(qi)(qi),再將(jiang)控(kong)溫(wen)(wen)儀表設定到(dao)530℃,把氨氣(qi)(qi)(qi)流(liu)(liu)量(liang)調(diao)(diao)小(xiao),保持爐(lu)(lu)(lu)內正(zheng)壓(ya)(ya)(ya)。4.排氣(qi)(qi)(qi)口有(you)(you)(you)較小(xiao)氣(qi)(qi)(qi)流(liu)(liu)向上(shang)的(de)壓(ya)(ya)(ya)力(li)(li),當爐(lu)(lu)(lu)溫(wen)(wen)升到(dao)530℃時(shi),恒溫(wen)(wen)恒流(liu)(liu)滲(shen)氮(dan)(dan)(dan)3-20h,再將(jiang)氨氣(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)調(diao)(diao)大(da)(da)一點,讓(rang)排氣(qi)(qi)(qi)維(wei)持適中壓(ya)(ya)(ya)力(li)(li),滲(shen)氮(dan)(dan)(dan)4-70h, 再將(jiang)氨氣(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)調(diao)(diao)小(xiao),退氮(dan)(dan)(dan)1-2h,切(qie)斷電源(yuan),給(gei)少量(liang)氨氣(qi)(qi)(qi),使爐(lu)(lu)(lu)內維(wei)持正(zheng)壓(ya)(ya)(ya)。5.排氣(qi)(qi)(qi)口有(you)(you)(you)較小(xiao)氣(qi)(qi)(qi)流(liu)(liu)向上(shang)的(de)壓(ya)(ya)(ya)力(li)(li),當爐(lu)(lu)(lu)溫(wen)(wen)升到(dao)530℃時(shi),恒溫(wen)(wen)恒流(liu)(liu)滲(shen)氮(dan)(dan)(dan)3-20h,再將(jiang)氨氣(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)調(diao)(diao)大(da)(da)一點,讓(rang)排氣(qi)(qi)(qi)維(wei)持適中壓(ya)(ya)(ya)力(li)(li),滲(shen)氮(dan)(dan)(dan)4-70h, 再將(jiang)氨氣(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)調(diao)(diao)小(xiao),退氮(dan)(dan)(dan)1-2h,切(qie)斷電源(yuan)。
1)采用中(zhong)冷(leng)連續式滲(shen)(shen)(shen)碳(tan)(tan)(tan)爐(lu)進(jin)(jin)行(xing)(xing)(xing)滲(shen)(shen)(shen)碳(tan)(tan)(tan)、緩(huan)冷(leng)和(he)再加(jia)(jia)熱(re)淬(cui)火(huo),可以(yi)(yi)細化材(cai)料(liao)的(de)晶(jing)粒度(du)和(he)顯(xian)微(wei)組(zu)(zu)織(zhi)(zhi),并提高(gao)材(cai)料(liao)的(de)彎曲疲(pi)勞(lao)強度(du)、抗沖擊性(xing)能(neng)、接觸(chu)疲(pi)勞(lao)性(xing)能(neng)及(ji)(ji)耐磨性(xing)能(neng)。 2)采用中(zhong)冷(leng)滲(shen)(shen)(shen)碳(tan)(tan)(tan)爐(lu)進(jin)(jin)行(xing)(xing)(xing)滲(shen)(shen)(shen)碳(tan)(tan)(tan)、緩(huan)冷(leng)和(he)再加(jia)(jia)熱(re)淬(cui)火(huo),不僅(jin)可以(yi)(yi)使(shi)20MnVB、20MnTi2B、18CrMnB及(ji)(ji)20CrMnMo、20Cr等粗晶(jing)粒鋼工(gong)件進(jin)(jin)行(xing)(xing)(xing)大(da)批量(liang)滲(shen)(shen)(shen)碳(tan)(tan)(tan)淬(cui)火(huo),簡化熱(re)處理(li)工(gong)藝,提高(gao)熱(re)處理(li)生產效率,降(jiang)(jiang)低成(cheng)本,而且還可以(yi)(yi)使(shi)工(gong)件獲得合格的(de)與比(bi)較(jiao)細小的(de)晶(jing)粒度(du)和(he)顯(xian)微(wei)組(zu)(zu)織(zhi)(zhi)。 3)對于Cr-Ni、Cr-Ni-Mo等含Ni材(cai)料(liao),尤其是含Ni量(liang)較(jiao)高(gao)的(de)材(cai)料(liao),通(tong)過中(zhong)冷(leng)滲(shen)(shen)(shen)碳(tan)(tan)(tan)爐(lu)進(jin)(jin)行(xing)(xing)(xing)滲(shen)(shen)(shen)碳(tan)(tan)(tan)、緩(huan)冷(leng)和(he)再加(jia)(jia)熱(re)淬(cui)火(huo),并采用較(jiao)低碳(tan)(tan)(tan)勢、適當溫度(du)和(he)較(jiao)長周期的(de)滲(shen)(shen)(shen)碳(tan)(tan)(tan)淬(cui)火(huo)工(gong)藝,降(jiang)(jiang)低了殘留奧(ao)氏體量(liang),使(shi)工(gong)件的(de)金(jin)相組(zu)(zu)織(zhi)(zhi)達到了產品的(de)技術要求,因此可以(yi)(yi)實現(xian)部分含Ni較(jiao)高(gao)工(gong)件的(de)大(da)批量(liang)滲(shen)(shen)(shen)碳(tan)(tan)(tan)直接淬(cui)火(huo)