通化硕抠家具有限公司

    高級(jí)檢索

    厚壁無(wú)縫鋼管縱向內(nèi)壁缺陷超聲波探傷方法的研究

    Study on Ultrasonic Testing Method for Longitudinal Inner Surface Flaw of Heavy-wall Seamless Steel Tube

    • 摘要: 針對(duì)超聲波檢測(cè)時(shí)純橫波無(wú)法同時(shí)實(shí)現(xiàn)厚壁無(wú)縫鋼管縱向內(nèi)、外壁缺陷的檢測(cè)，對(duì)無(wú)縫鋼管超聲波探傷入射角的允許范圍進(jìn)行計(jì)算，理論分析純橫波和變形橫波探傷時(shí)所能檢測(cè)的無(wú)縫鋼管t/D范圍，并給出純橫波和變形橫波檢測(cè)常規(guī)外徑無(wú)縫鋼管時(shí)的壁厚范圍。分析認(rèn)為：無(wú)縫鋼管t/D≤0.20時(shí)采用純橫波對(duì)內(nèi)、外表面進(jìn)行探傷；0.20 ∧t/D≤0.26時(shí)，應(yīng)使用變型橫波進(jìn)行表面探傷，可解決厚壁無(wú)縫鋼管縱向內(nèi)壁缺陷檢測(cè)的難題。

       

      Abstract: Addressing the problem that in case of the ultrasonic testing,using the pure transverse wave can not at the same time perform detecting longitudinal flaws on both inner and outer surfaces of the heavy-wall seamless steel pipe,permissible range of the UT incidence angle is calculated,and the seamless steel pipe t/D ranges as detected by the pure transverse wave and the deformed transverse wave are theoretically analyzed,and also the wall thickness range of seamless steel pipes with regular O.D.as detected with the pure transverse wave and the deformed transverse wave is presented.Based on the analysis result,it is concluded that for pipes with t/D ≤ 0.20,the pure transverse wave should be used for detecting both inner and outer surface flaws,and for pipes with 0.20 ∧t/D ≤ 0.26,the deformed transverse wave should be used for surface detection so as to realize detection of longitudinal inner surface flaw of the heavy-wall seamless steel pipe.

       

      • HTML全文

    /

    返回文章
    返回