Welding Technology for Thick Wall Big Pipe of Main Steam Header with X20CrMoV121 Steel Used for High Temperature and High Pressure

Leng Zhengao  Zhang Mingqiao

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Welding Technology for Thick Wall Big Pipe of Main Steam Header with X20CrMoV121 Steel Used for High Temperature and High Pressure

更新时间：2025-11-18

- Welding Technology for Thick Wall Big Pipe of Main Steam Header with X20CrMoV121 Steel Used for High Temperature and High Pressure
- Issue 1, Pages: 24-27(2005)
- 作者机构：
  
  1. 四川内江发电总厂
  2. 四川内江发电总厂四川内江641006
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK226
- Published：2005
- 稿件说明：
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[1]冷祯皋,张明乔.X20CrMoV121高温高压主汽连通厚壁大管焊接工艺[J].四川电力技术,2005(01):24-27.

Leng Zhengao Zhang Mingqiao. Welding Technology for Thick Wall Big Pipe of Main Steam Header with X20CrMoV121 Steel Used for High Temperature and High Pressure[J]. 2005, (1): 24-27.
[1]冷祯皋,张明乔.X20CrMoV121高温高压主汽连通厚壁大管焊接工艺[J].四川电力技术,2005(01):24-27. DOI：

Leng Zhengao Zhang Mingqiao. Welding Technology for Thick Wall Big Pipe of Main Steam Header with X20CrMoV121 Steel Used for High Temperature and High Pressure[J]. 2005, (1): 24-27. DOI：

摘要

X2 0CrMoV1 2 1钢是按德国DIN1 71 75标准生产的耐热钢

其最高使用温度为 6 5 0℃

在进口火电高温高压机组中应用较多。由于其合金含量较多

焊接性能很差。电站建设中

一般都将其作为焊接工程的难点和重点。介绍了X2 0CrMoV1 2 1在四川某电站工程中的具体应用

并对其焊接性能进行了分折

详细介绍了所采取的焊接及热处理工艺措施

Abstract

X20CrMoV121 steel is the heat-resistant steel produced in accordance with DIN17175

the Germany industry standard. The highest available temperature is 650℃ and it is applied mostly in the high-temperature and high-pressure imported units. It has been regarded as the important and difficult point in the power station building because of its high alloy content and poor welding property. The actual application of X20CrMoV121 steel in one power station engineering in Sichuan has been introduced

in which its welding property has been analyzed

and the measures of welding and heat treatment technology have been introduced in detail.

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