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    高精度小直徑無縫鋼管生產(chǎn)工藝改進(jìn)

    TECHNOLOGICAL IMPROVEMENT ON MANUFACTURE OF HIGH-PRECISION SMALL-SIZED SEAMLESS STEEL TUBES & PIPES

    • 摘要: 分析了傳統(tǒng)的大直徑定壁冷拔工藝生產(chǎn)高精度小直徑無縫鋼管的弊端,提出了小直徑定壁冷拔新工藝和新頂頭結(jié)構(gòu)。實(shí)踐表明,新工藝生產(chǎn)的高精度小直徑無縫鋼管,其尺寸精度、表面質(zhì)量均達(dá)到技術(shù)要求。

       

      Abstract: Based on the shortcomings of the conventional cold-drawing process using larger sized pipe as stock to produce small high-precision seamless steel pipe with W.T obtained through the first pass,a new cold-drawing process has been introduced,which uses smaller pipes as stock to produce the said high-precision pipe with W.T obtained though the first pass.Accordingly the respective modified plug employed by the new process is described.It is concluded that the related operation practice has proven the new process is capable of producing high-precision small sized tubes and pipes with both geometric tolerances and surface quality satisfactory to related technical criteria.

       

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