Creeping wave detection of crack in welding toe of boiler tube slide block

XU Xiongfei; WANG Zhongying; ZHANG Peng

doi:10.19666/j.rlfd.202011273

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Creeping wave detection of crack in welding toe of boiler tube slide block

Thermal Power Generation Vol. 50, Issue 2, Pages: 163-167(2021)

更新时间：2025-09-28

- Creeping wave detection of crack in welding toe of boiler tube slide block
- 作者机构：
  
  1. 广西民族大学数学与物理学院
  2. 华能国际电力股份有限公司邯峰电厂
  3. 浙江华业电力工程股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202011273
  CLC： TM621.2
- Published：2021
- 稿件说明：
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XU Xiongfei, WANG Zhongying, ZHANG Peng. Creeping wave detection of crack in welding toe of boiler tube slide block[J]. Thermal Power Generation, 2021, 50(2): 163-167.
DOI：

XU Xiongfei, WANG Zhongying, ZHANG Peng. Creeping wave detection of crack in welding toe of boiler tube slide block[J]. Thermal Power Generation, 2021, 50(2): 163-167. DOI： 10.19666/j.rlfd.202011273.

摘要

针对电站锅炉过热器和再热器管滑块焊趾裂纹检测工况复杂检测难度大的问题

本文在分析过热器和再热器管滑块焊趾裂纹产生机理的基础上

采用爬波检测技术

开发了爬波检测探头、试块及检测工艺。对某电厂锅炉滑块焊趾裂纹进行实际检测

结果表明

5P(9×16)×2的爬波探头对Φ50.8 mm×8.5 mm锅炉管滑块焊趾裂纹的检测识别效果好

检出率高。该爬波检测技术简便、灵活、适用于现场工况复杂的检测环境

裂纹反射波易识别

消除了滑块焊趾裂纹的不可探区域。

Abstract

The detection condition of the welding toe crack of slide block in superheater and reheater tube of power station boiler is complicate

which makes the detection very difficult. To solve this problem

on the basis of analyzing the formation mechanism of welding toe crack of superheater and reheater tube

the crawling wave detection probe and block as well as the technology are developed by using the crawling wave detection technology. Moreover

the welding toe crack of a boiler slide block was tested

the results show that

the 5 P(9×16)×2 climb wave probe has good identification effect on boiler tube(Φ50.8 mm×8.5 mm) slider weld toe crack detection

and the detection rate is high. This creep wave detection method is simple

flexible and suitable for the detection environment with complex working conditions on site. The crack reflection wave is easy to be identified and the undetectable area of the slide toe crack is eliminated.

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