WELDING OF DISSIMILAR STEELS IN MANUFACTURING LOW β VALUE FEED-WATER FLOW NOZZLES

JIANG Hao1; XIAO Lan2; LI Yang1; HUANG Maoyu2; HUANG Jiasi1; CHANG Dongfeng1; WANG Hao1; ZHOU Yuanxiang1 1.Xi'an Thermal Power Research Institute Co Ltd

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WELDING OF DISSIMILAR STEELS IN MANUFACTURING LOW β VALUE FEED-WATER FLOW NOZZLES

更新时间：2025-09-28

- WELDING OF DISSIMILAR STEELS IN MANUFACTURING LOW β VALUE FEED-WATER FLOW NOZZLES
- Thermal Power Generation Vol. 41, Issue 1, Pages: 80-83(2012)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 大连精工自控仪表成套技术开发公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG457.11
- Published：2012
- 稿件说明：
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JIANG Hao1, XIAO Lan2, LI Yang1, et al. WELDING OF DISSIMILAR STEELS IN MANUFACTURING LOW β VALUE FEED-WATER FLOW NOZZLES[J]. Thermal power generation, 2012, 41(1): 80-83.
DOI：

JIANG Hao1, XIAO Lan2, LI Yang1, et al. WELDING OF DISSIMILAR STEELS IN MANUFACTURING LOW β VALUE FEED-WATER FLOW NOZZLES[J]. Thermal power generation, 2012, 41(1): 80-83. DOI：

摘要

在低β值给水流量喷嘴安装中

采用A307焊材对Q345R主管道和304不锈钢喷嘴进行焊接

焊后的检测结果表明

焊接工艺满足DL/T 752—2001规定;焊接接头无裂纹和超标缺陷

符合JB 4730—2005.3Ⅱ级要求;水压试验无泄漏

无可见的异常变形

无异常响声;喷嘴有轻微变形

但可满足测量精度要求。

Abstract

In the installation process of low β value feed-water flow nozzles

A307 electrode was used for welding dissimilar steels of Q345R main pipeline and 304 stainless steel nozzles

result of inspection shows that the welding technology satisfied the stipulations in standard DL/T 752—2001

and there aren't cracks and defects surpassing set standard on the weld-joints

tallying well with the requirements in JB4730-2005.3Ⅱ level.The nozzle hasn't leakage and abnormal noise during hydrostatic test;there is slight deformantion on nozzles

but can satisfy the requirement of measurement precision.

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