1)在(zai)少無氧(yang)化熱(re)(re)處(chu)理技術(shu)的發展趨勢(shi)中，首推(tui)可控氣氛和(he)真空熱(re)(re)處(chu)理的發展迅猛。在(zai)目前少品種、大批量生產中，尤其(qi)是碳(tan)(tan)素鋼(gang)和(he)一(yi)般合金(jin)nm400耐磨鋼(gang)板結構鋼(gang)件的光(guang)亮淬(cui)火(huo)(huo)(huo)(huo)、退火(huo)(huo)(huo)(huo)、滲(shen)碳(tan)(tan)淬(cui)火(huo)(huo)(huo)(huo)、碳(tan)(tan)氮(dan)共滲(shen)淬(cui)火(huo)(huo)(huo)(huo)、氣體氮(dan)碳(tan)(tan)共滲(shen)仍(reng)以應用可控氣氛為主(zhu)要手段。所以可控氣氛熱(re)(re)處(chu)理仍(reng)是先進熱(re)(re)處(chu)理技術(shu)的主(zhu)要組成部分。
2)制備(bei)氣(qi)(qi)氛(fen)(fen)的(de)(de)(de)氣(qi)(qi)源。我國(guo)在掌握和(he)推廣可控氣(qi)(qi)氛(fen)(fen)過程中，在解決氣(qi)(qi)氛(fen)(fen)問題上走過了(le)(le)漫長的(de)(de)(de)道路。最早的(de)(de)(de)吸(xi)熱(re)式(shi)氣(qi)(qi)氛(fen)(fen)發生(sheng)爐主要用(yong)液化(hua)氣(qi)(qi)，即(ji)純度(du)較高的(de)(de)(de)丙烷(wan)或丁烷(wan)。近(jin)幾年已證(zheng)實，我國(guo)的(de)(de)(de)天然(ran)氣(qi)(qi)資(zi)源豐富(fu)，為(wei)用(yong)甲烷(wan)制備(bei)吸(xi)熱(re)式(shi)氣(qi)(qi)氛(fen)(fen)創造了(le)(le)良(liang)好的(de)(de)(de)條件。使用(yong)不用(yong)了(le)(le)生(sheng)爐的(de)(de)(de)直生(sheng)式(shi)氣(qi)(qi)氛(fen)(fen)也是一(yi)條不容忽(hu)視的(de)(de)(de)途徑。
3)加熱設備。密封多用爐和多用爐生(sheng)產線自(zi)動化程(cheng)度高，生(sheng)產柔性大(da)，適用性強，因而發展前途廣，市場(chang)需求也大(da)。
4)可(ke)控氣氛(fen)熱處理(li)(li)工(gong)藝。滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)。高(gao)(gao)溫滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)是滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)技術(shu)發展趨勢之(zhi)一。提(ti)高(gao)(gao)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)溫度可(ke)以(yi)顯(xian)著(zhu)提(ti)高(gao)(gao)生產率(lv)和(he)節(jie)省能(neng)(neng)耗。為此研究開發可(ke)用(yong)于1000℃以(yi)上(shang)的(de)(de)電輻射管材(cai)料是當(dang)務之(zhi)急，低壓滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)技術(shu)的(de)(de)開發和(he)完善為實現(xian)高(gao)(gao)溫滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)（1040℃）創造了條件(jian)。鋼件(jian)的(de)(de)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)層(ceng)深度要求一般都較(jiao)保守(shou)，有(you)(you)(you)時(shi)也很盲目。看來(lai)有(you)(you)(you)必(bi)要研究決定(ding)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)層(ceng)深度的(de)(de)力學因素，探討(tao)減少滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)層(ceng)規定(ding)的(de)(de)可(ke)能(neng)(neng)性。碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)。碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)溫度比(bi)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)低，工(gong)件(jian)畸變小。在(zai)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)層(ceng)深度為0.6mm以(yi)下(xia)時(shi)的(de)(de)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)速接(jie)(jie)近于930℃滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)碳(tan)(tan)(tan)(tan)。鋼碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)時(shi)容易(yi)出現(xian)反常組織，淬(cui)火(huo)后表面硬度有(you)(you)(you)下(xia)降現(xian)象，滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)層(ceng)中有(you)(you)(you)較(jiao)多(duo)的(de)(de)殘留奧氏體。如何合(he)理(li)(li)選擇工(gong)藝，充(chong)分發揮碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)潛力仍是值得(de)探討(tao)的(de)(de)問題(ti)。過(guo)(guo)(guo)去曾有(you)(you)(you)人提(ti)倡過(guo)(guo)(guo)高(gao)(gao)濃度碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)，也曾有(you)(you)(you)過(guo)(guo)(guo)鋼件(jian)碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)時(shi)表面含碳(tan)(tan)(tan)(tan)量在(zai)0.6％，具有(you)(you)(you)最好綜合(he)力學性能(neng)(neng)的(de)(de)報道(dao)，為此眾說紛紜(yun)。看來(lai)有(you)(you)(you)必(bi)要掌握這些(xie)規律，對生產工(gong)藝的(de)(de)優選有(you)(you)(you)所幫助(zhu)。過(guo)(guo)(guo)去和(he)現(xian)在(zai)都有(you)(you)(you)對滾動軸承施行碳(tan)(tan)(tan)(tan)氮(dan)(dan)共(gong)滲(shen)(shen)(shen)(shen)(shen)(shen)(shen)(shen)以(yi)提(ti)高(gao)(gao)接(jie)(jie)觸疲(pi)勞強度的(de)(de)報道(dao)。
耐磨鋼|耐磨鋼板|高強度鋼板| 高強鋼現貨——法鋼特種鋼材（上海）有限公司
//zenggaole.cn