Fabrication and evaluation of electromagnetic defect detector for laser welding joint on stainless steel pipe

2015 9th International Conference on Sensing Technology (ICST) Pub Date : 2015-12-01 DOI:10.1109/ICSENST.2015.7438412

M. Sonehara, Fumiya Nagashima, Toshiro Sato, Kohei Yazaki, N. Aota, S. Shimadu

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引用次数: 1

Abstract

Inline total inspection of the laser welding joint of ultra-fine suction stainless steel pipes for medical apparatus is very important. An electromagnetic defect detector for laser welding joint on stainless steel pipe was proposed. The electromagnetic defect detector consists of a figure-eight detection coil and an exciting coil. The stainless steel pipe with laser welding joint (i.e. “acceptance”) is fixed in a coil of the figure-eight coil. And the pipes of inspection target are passed through another coil. When the “acceptance” is passed through the coil, the output voltage e8 in the figure-eight coil equals zero. It is judged as an acceptance certainly. On the other hand, when a stainless steel pipe excluding the welding joint or the pipe with a defect (i.e. “reject”) are passed through the Coil 2, e8 ≠ 0 is obtained. The authors fabricated and evaluated the electromagnetic defect detector. The detector was able to determine the acceptance of the reject at the laser welding joints on stainless steel pipe.

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不锈钢管激光焊接接头电磁探伤仪的研制与评价

医疗器械用超细吸吸不锈钢管激光焊接接头的在线全面检测是非常重要的。提出了一种用于不锈钢激光焊接接头的电磁探伤仪。电磁探伤仪由一个八字探测线圈和一个励磁线圈组成。带激光焊接接头(即“验收”)的不锈钢管固定在八字线圈的一个线圈中。检测目标的管道通过另一个线圈。当“验收”通过线圈时，数字8线圈中的输出电压e8等于零。它肯定被判定为接受。另一方面，当不含焊接接头的不锈钢管或有缺陷(即“废品”)的管通过线圈2时，则得到e8≠0。作者制作并评价了电磁探伤仪。该探测器能够对不锈钢激光焊接接头处的废品进行验收。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 9th International Conference on Sensing Technology (ICST)

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