Scholarlink

<p>Local thinning of the pipe wall thickness may occur during continuous rolling with a&#xa0;retained mandrel at the rear end of the pipes, which can be detected by ultrasonic testing. The characteristics that classify this local thinning as a&#xa0;surface defect have been identified. Primary factors contributing to these defects include an increased contact area between the metal and the mandrel at the rear end of the pipes, additional tensile stress in the metal, and non-uniform friction conditions at the contact surface between the metal and the mandrel.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Investigating the causes of local thinning in pipe walls

  • 期刊论文

  • 发表日期：

    2025年10月8日

查看全文
  • I. N. Chernykh

摘要

Local thinning of the pipe wall thickness may occur during continuous rolling with a retained mandrel at the rear end of the pipes, which can be detected by ultrasonic testing. The characteristics that classify this local thinning as a surface defect have been identified. Primary factors contributing to these defects include an increased contact area between the metal and the mandrel at the rear end of the pipes, additional tensile stress in the metal, and non-uniform friction conditions at the contact surface between the metal and the mandrel.