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    Φ508 mm×9.5 mm L450MB鋼級ERW管線管的試制

    Trial Manufacture of Φ508 mm×9.5 mm L450MB ERW Linepipe

    • 摘要: 焊縫沖擊功低且不穩(wěn)定是ERW管線管生產(chǎn)的一大技術(shù)難點。針對高鋼級L450MB焊管存在焊縫沖擊功不穩(wěn)定的情況,寶山鋼鐵股份有限公司寶鋼分公司鋼管廠采取降低焊接速度、調(diào)整熱處理工藝的技術(shù)方案,試制出焊縫沖擊韌性符合標準要求的L450MB鋼級ERW管線管。

       

      Abstract: Low and inconsistent impact energy of the weld seam is regarded as a major technological problem relating to manufacturing of ERW linepipe. Addressing the problem of inconsistent impact energy of the hi-grade L450MB ERW pipe, the Steel Tube Plant, Baogang Co., Baoshan Iron & Steel Co., Ltd. has produced by trial the L450MB ERW linepipe which is up to the impact toughness of weld seam as specified in applicable standard by adopting a technical solution involving such actions as reducing the welding speed and adjusting the heat treatment process.

       

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