目前(qian)國內軸承鋼管的(de)(de)生(sheng)產工(gong)藝(yi)未(wei)發(fa)生(sheng)實質性的(de)(de)變化,常見的(de)(de)軸承鋼管生(sheng)產方(fang)法主(zhu)要有兩種(zhong):(1)穿孔+冷軋(拔)工(gong)藝(yi);(2)穿孔+三輥軋管(或(huo)(huo)二輥軋管)+定(ding)徑(jing)(張減機)或(huo)(huo)+冷軋(拔)工(gong)藝(yi)。在這(zhe)兩種(zhong)工(gong)藝(yi)中,坯(pi)料采用軋制坯(pi)或(huo)(huo)連鑄坯(pi),鋼管(從坯(pi)料到成品(pin))的(de)(de)壓縮比(bi)應大(da)于(yu)15。


  其(qi)中,以穿孔+冷軋(ya)(拔)工藝生產(chan)的(de)軸(zhou)(zhou)承(cheng)鋼(gang)管,多為中小直徑精密(mi)的(de)軸(zhou)(zhou)承(cheng)管,生產(chan)規格(ge)為Φ(14~120)mm×(2~15)mm,鋼(gang)管材質為GCr15或GCr15SiMn。該生產(chan)工藝相對簡(jian)單,裝備少,流程短,投資少,產(chan)量低。


  以穿孔+三輥軋(ya)管(guan)(guan)(guan)(或二輥軋(ya)管(guan)(guan)(guan))+定徑(jing)(jing)(張減徑(jing)(jing))或+冷軋(ya)(拔(ba))工(gong)藝生(sheng)產(chan)(chan)(chan)的鋼(gang)管(guan)(guan)(guan),是目前國際上主流(liu)(liu)的生(sheng)產(chan)(chan)(chan)軸承鋼(gang)管(guan)(guan)(guan)的熱軋(ya)方法,可實(shi)現控(kong)溫控(kong)軋(ya)。其生(sheng)產(chan)(chan)(chan)規(gui)格(ge)為(wei)(wei)Φ(48~200)mmx(5~30)mmm,多為(wei)(wei)規(gui)格(ge)范圍(wei)較寬泛的軸承鋼(gang)管(guan)(guan)(guan),鋼(gang)管(guan)(guan)(guan)材質(zhi)為(wei)(wei)具備不(bu)同淬透性(xing)的高碳鉻軸承鋼(gang)。該生(sheng)產(chan)(chan)(chan)工(gong)藝復雜,裝(zhuang)備多,流(liu)(liu)程(cheng)長,投資大,但(dan)產(chan)(chan)(chan)量(liang)高。目前,三輥軋(ya)管(guan)(guan)(guan)機(ji)被公認為(wei)(wei)最適(shi)宜的軸承鋼(gang)管(guan)(guan)(guan)和(he)精密(mi)中(zhong)厚壁鋼(gang)管(guan)(guan)(guan)生(sheng)產(chan)(chan)(chan)機(ji)組。


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