AN APPROACH TO MAGNETIC PARTICLE DETECTION TECHNOLOGY USED FOR ANGLE WELD JOINT ON SMALL SIZE TUBE SOCKET BASED ON YOKE MAGNETIZATION METHOD

JING Shang-qian; ZHANG Yan-xin; LI Zhong-wei; LIU Chang-fu Hebei Provincial Electric Power Research Institute

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AN APPROACH TO MAGNETIC PARTICLE DETECTION TECHNOLOGY USED FOR ANGLE WELD JOINT ON SMALL SIZE TUBE SOCKET BASED ON YOKE MAGNETIZATION METHOD

更新时间：2025-09-28

- AN APPROACH TO MAGNETIC PARTICLE DETECTION TECHNOLOGY USED FOR ANGLE WELD JOINT ON SMALL SIZE TUBE SOCKET BASED ON YOKE MAGNETIZATION METHOD
- Thermal Power Generation Vol. 38, Issue 9, Pages: 86-88(2009)
- 作者机构：
  
  河北省电力研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG441.7
- Published：2009
- 稿件说明：
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JING Shang-qian, ZHANG Yan-xin, LI Zhong-wei, et al. AN APPROACH TO MAGNETIC PARTICLE DETECTION TECHNOLOGY USED FOR ANGLE WELD JOINT ON SMALL SIZE TUBE SOCKET BASED ON YOKE MAGNETIZATION METHOD[J]. Thermal power generation, 2009, 38(9): 86-88.
DOI：

JING Shang-qian, ZHANG Yan-xin, LI Zhong-wei, et al. AN APPROACH TO MAGNETIC PARTICLE DETECTION TECHNOLOGY USED FOR ANGLE WELD JOINT ON SMALL SIZE TUBE SOCKET BASED ON YOKE MAGNETIZATION METHOD[J]. Thermal power generation, 2009, 38(9): 86-88. DOI：

摘要

磁粉检测作为一种有效的无损检测方法被广泛应用于火力发电厂铁磁性部件表面和近表面缺陷的检测

但在小尺寸管座角焊缝的磁粉检测中

缺陷的检出率受磁化方式、磁化方向、磁化设备、磁化规范等因素的影响。因此

对站立式与跨越式2种磁化方式以及直流磁化法与交流磁化法2种磁化方法进行了试验对比

结果表明跨越法会造成缺陷的漏检

交流磁轭对工件的磁化效果更佳

有利于缺陷的检出。

Abstract

As an effective non-destructive detection method

the magnetic particle detection is widely used for ferromagnetic parts and components in power plants to detect defects on their surface or near the surface

but in magnetic particle detection of angle weld joints on small size tube sockets

the probability of discovered defects is affected by many factors

such as the methods of magnetization

the choise of magnetizing direction

the selection of magnetizing equipment

and the control of magnetizing criterion etc..For this

two kinds of magnetizing mode;i.e.standing mode and striding across mode

and two kinds of magnetizing method

i.e.DC magnetization and AC magnetization

have been tested and compared.It is shown that the striding across mode may result in loss detection of the defects

and the AC Yoke has more better effects to magnetization of the workpieces.A method for enhancing the probability of dicovered defects in magnetic particle detection of angle weld joints on small size tube sockets based on Yoke magnetization has been put forward.

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