中小直徑精密軸承管的生產(chǎn)工藝
Manufacturing Process of Small/Medium-sized Precision Bearing Steel Tubes
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摘要: 回顧了國內(nèi)外傳統(tǒng)軸承管的生產(chǎn)工藝,介紹了目前國內(nèi)精密軸承管的生產(chǎn)工藝,包括典型生產(chǎn)工序和工藝特征。通過比較可知,采用穿孔+冷拔（軋）生產(chǎn)軸承管的工藝,比國外采用傳統(tǒng)三輥軋管+冷軋（拔）工藝,具有生產(chǎn)裝備簡單,投資少,流程短,成材率高,加工成本低等特點。Abstract: The conventional manufacturing processes for bearing steel tubes employed both abroad and at home are reviewed. The present manufacturing processes for the said tubes domestically adapted are described, covering typical manufacturing steps and technological features. Compared with the foreign-used conventional bearing tube manufacturing process of 3-high rolling plus cold-rolling（drawing）, the process of piercing plus cold-rolling（drawing） features further simplified production equipment, less initial investment, shorter process flow, higher yield and more cost-effectiveness.
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