Abstract

The analysis of the quality of large diameter welded pipes (LDP) was carried out and a method was proposed in the form of algorithms and mathematical models based on the finite-element method (FEM), which allows calculating the boundaries of the deformation zone, the width and radius of the billet to be formed at each step of the step forming press and obtaining profile of “spline” pipe, which, upon subsequent deformation and welding on the equipment of the TESA 1420 line, ensures the production of finished pipes of the required dimensions in accordance with regulatory documents and without defects.

中文翻译：

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使用板坯形状变化过程的建模方法改善大口径焊管的质量

摘要

对大直径焊管（LDP）的质量进行了分析，并基于有限元法（FEM）以算法和数学模型的形式提出了一种方法，该方法可以计算变形区的边界，在逐步成型压力机的每个步骤中要形成的坯料的宽度和半径，并获得“花键”管的轮廓，随后在TESA 1420生产线的设备上进行变形和焊接后，可确保生产成品管。根据监管文件要求的尺寸，无缺陷。