Scholarlink

In order to investigate the leakage failure reasons of water-cooled wall tubes in a certain power plant boiler, this study conducted an analysis using macroscopic morphology observation, hardness measurement, and metallographic examination. The results indicate that the residual oxide and dirt after acid cleaning, especially in uneven areas such as welds and threads, are the main causes of corrosion and leakage. These areas are prone to the formation of corrosive products under high temperature and load, hindering heat transfer, leading to local temperature increases and high-temperature creep, causing intergranular damage to the tube wall metal and the formation of cracks, ultimately facilitating the occurrence of leakage. This study provides significant evidence for the prevention and maintenance of water wall tubes.

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

Leakage Failure Analysis on Water Wall Pipes of a Power Plant Boiler

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Yang Zhou

摘要

In order to investigate the leakage failure reasons of water-cooled wall tubes in a certain power plant boiler, this study conducted an analysis using macroscopic morphology observation, hardness measurement, and metallographic examination. The results indicate that the residual oxide and dirt after acid cleaning, especially in uneven areas such as welds and threads, are the main causes of corrosion and leakage. These areas are prone to the formation of corrosive products under high temperature and load, hindering heat transfer, leading to local temperature increases and high-temperature creep, causing intergranular damage to the tube wall metal and the formation of cracks, ultimately facilitating the occurrence of leakage. This study provides significant evidence for the prevention and maintenance of water wall tubes.