目(mu)前國內軸承(cheng)鋼(gang)管(guan)的(de)(de)生產工(gong)藝(yi)未發生實質(zhi)性的(de)(de)變化,常見的(de)(de)軸承(cheng)鋼(gang)管(guan)生產方法主要有(you)兩種:(1)穿孔+冷軋(ya)(拔(ba))工(gong)藝(yi);(2)穿孔+三輥(gun)(gun)軋(ya)管(guan)(或(huo)二輥(gun)(gun)軋(ya)管(guan))+定徑(張減機)或(huo)+冷軋(ya)(拔(ba))工(gong)藝(yi)。在這兩種工(gong)藝(yi)中,坯(pi)料采用軋(ya)制坯(pi)或(huo)連鑄(zhu)坯(pi),鋼(gang)管(guan)(從坯(pi)料到成(cheng)品)的(de)(de)壓(ya)縮(suo)比應大(da)于15。


  其中(zhong),以穿孔(kong)+冷軋(拔)工藝生產(chan)(chan)的軸(zhou)承鋼管(guan),多(duo)為(wei)中(zhong)小(xiao)直(zhi)徑精(jing)密的軸(zhou)承管(guan),生產(chan)(chan)規(gui)格為(wei)Φ(14~120)mm×(2~15)mm,鋼管(guan)材(cai)質為(wei)GCr15或GCr15SiMn。該(gai)生產(chan)(chan)工藝相(xiang)對簡單(dan),裝備少,流(liu)程(cheng)短,投資(zi)少,產(chan)(chan)量低。


  以穿孔+三輥(gun)(gun)軋(ya)(ya)管(guan)(guan)(guan)(guan)(或二輥(gun)(gun)軋(ya)(ya)管(guan)(guan)(guan)(guan))+定徑(張減徑)或+冷軋(ya)(ya)(拔(ba))工(gong)藝生(sheng)產的鋼(gang)管(guan)(guan)(guan)(guan),是目(mu)(mu)前國際上(shang)主流(liu)的生(sheng)產軸(zhou)承(cheng)鋼(gang)管(guan)(guan)(guan)(guan)的熱軋(ya)(ya)方法(fa),可實現控溫控軋(ya)(ya)。其生(sheng)產規(gui)格為(wei)(wei)Φ(48~200)mmx(5~30)mmm,多為(wei)(wei)規(gui)格范圍較寬泛的軸(zhou)承(cheng)鋼(gang)管(guan)(guan)(guan)(guan),鋼(gang)管(guan)(guan)(guan)(guan)材質為(wei)(wei)具(ju)備不同淬透性的高碳鉻軸(zhou)承(cheng)鋼(gang)。該生(sheng)產工(gong)藝復雜(za),裝備多,流(liu)程長,投資大(da),但(dan)產量高。目(mu)(mu)前,三輥(gun)(gun)軋(ya)(ya)管(guan)(guan)(guan)(guan)機被(bei)公認為(wei)(wei)最適宜的軸(zhou)承(cheng)鋼(gang)管(guan)(guan)(guan)(guan)和(he)精密中(zhong)厚(hou)壁鋼(gang)管(guan)(guan)(guan)(guan)生(sheng)產機組。


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