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    簡析直縫埋弧焊管焊接接頭常見缺陷

    Analysis on Common Defects of SAWL Pipe Weld Joint

    • 摘要: 介紹了直縫埋弧焊管焊接接頭的常見缺陷(焊接咬邊、氣孔、未熔合、未焊透、焊瘤、燒穿、焊接裂紋),分析了各缺陷的產(chǎn)生原因,并提出有效的焊接前和焊接中質(zhì)量控制措施。分析認(rèn)為:通過選取合適的焊接材料、徹底清除焊接坡口面及焊絲上的污物、控制坡口幾何尺寸等可預(yù)防焊接缺陷的產(chǎn)生,提高焊接質(zhì)量。

       

      Abstract: Described in the article are the common defects of the SAWL pipe weld joint,including undercut,weld porosity,lack of fusion in weld,lack of penetration,overlap,burn through and weld flaw,etc. The causes for such defects are investigated,and accordingly,actions for quality control to be taken before and during the welding operation are put forwarded. Based on the analysis,it is concluded that the above mentioned defects could be prevented,and the welding quality improved,providing that proper welding material is selected,the welding bevel surface and the welding wire are completely cleared of any dirt,and the bevel geometric dimensions are properly controlled.

       

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