目前國內軸承鋼(gang)管(guan)(guan)的生產(chan)工(gong)藝(yi)未(wei)發生實質性的變化,常(chang)見(jian)的軸承鋼(gang)管(guan)(guan)生產(chan)方法(fa)主要有兩種:(1)穿(chuan)孔(kong)+冷軋(ya)(拔)工(gong)藝(yi);(2)穿(chuan)孔(kong)+三輥軋(ya)管(guan)(guan)(或(huo)(huo)(huo)二輥軋(ya)管(guan)(guan))+定(ding)徑(張減機(ji))或(huo)(huo)(huo)+冷軋(ya)(拔)工(gong)藝(yi)。在(zai)這兩種工(gong)藝(yi)中,坯料采用軋(ya)制坯或(huo)(huo)(huo)連鑄坯,鋼(gang)管(guan)(guan)(從坯料到成品)的壓縮比(bi)應大于15。
其(qi)中(zhong),以穿孔+冷軋(拔)工(gong)藝(yi)生產的軸(zhou)承鋼(gang)管,多為(wei)中(zhong)小直徑精密的軸(zhou)承管,生產規格為(wei)Φ(14~120)mm×(2~15)mm,鋼(gang)管材質為(wei)GCr15或GCr15SiMn。該生產工(gong)藝(yi)相對簡單,裝備少,流程短,投資(zi)少,產量低(di)。
以穿(chuan)孔+三輥軋(ya)(ya)(ya)管(guan)(guan)(或(huo)二輥軋(ya)(ya)(ya)管(guan)(guan))+定徑(張(zhang)減徑)或(huo)+冷軋(ya)(ya)(ya)(拔(ba))工藝生(sheng)(sheng)產(chan)(chan)(chan)的(de)(de)鋼管(guan)(guan),是目前國際上主流的(de)(de)生(sheng)(sheng)產(chan)(chan)(chan)軸(zhou)承(cheng)鋼管(guan)(guan)的(de)(de)熱軋(ya)(ya)(ya)方(fang)法(fa),可實現控溫控軋(ya)(ya)(ya)。其(qi)生(sheng)(sheng)產(chan)(chan)(chan)規(gui)格(ge)為(wei)Φ(48~200)mmx(5~30)mmm,多(duo)為(wei)規(gui)格(ge)范圍較寬(kuan)泛的(de)(de)軸(zhou)承(cheng)鋼管(guan)(guan),鋼管(guan)(guan)材質為(wei)具備(bei)不同(tong)淬透(tou)性的(de)(de)高碳鉻軸(zhou)承(cheng)鋼。該生(sheng)(sheng)產(chan)(chan)(chan)工藝復雜,裝備(bei)多(duo),流程(cheng)長,投資大,但產(chan)(chan)(chan)量高。目前,三輥軋(ya)(ya)(ya)管(guan)(guan)機被公認為(wei)最適宜的(de)(de)軸(zhou)承(cheng)鋼管(guan)(guan)和精密中厚壁鋼管(guan)(guan)生(sheng)(sheng)產(chan)(chan)(chan)機組。

