深窄间隙焊接技术在大厚度构件材料焊接中的应用研究

doi:10.3901/JME.2016.02.056

机械工程学报 ›› 2016, Vol. 52 ›› Issue (2): 56-61.doi: 10.3901/JME.2016.02.056

• 高速高效熔化焊接工艺专栏 • 上一篇下一篇

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深窄间隙焊接技术在大厚度构件材料焊接中的应用研究

王朋^1,2, 刘霞^2,3, 芦凤桂¹

1. 上海交通大学材料科学与工程学院上海 200240；
2. 上海电气电站设备有限公司上海 200240；
3. 清华大学机械学院北京 100084

收稿日期:2015-05-05 修回日期:2015-09-28 出版日期:2016-01-15 发布日期:2016-01-15
通讯作者: 芦凤桂，女，1975年出生，博士，副教授。主要研究方向为焊接组织与性能的内在关联。 E-mail：lfg119@sjtu.edu.cn
作者简介:王朋，男，1986年出生。主要研究方向为焊接工艺及性能。 E-mail：wangpeng@shanghai-electric.com

Application of Deep-narrow Gap Welding Method in Manufacturing Component with Heavy Section

WANG Peng^1,2, LIU Xia^2,3, LU Fenggui¹

1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240;
2. Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment, Shanghai 200240;
3. Department of Mechanical Engineering, Tsinghua University, Beijing 100084

Received:2015-05-05 Revised:2015-09-28 Online:2016-01-15 Published:2016-01-15

摘要/Abstract

摘要： 窄间隙焊接技术作为一种高效焊接方法以其大大降低熔敷量和节约制造时间的优点，使其在大厚度构件制造中具有广阔的应用前景，但是焊接过程的稳定性及侧壁熔合等缺陷的存在，成为影响构件高品质制造的关键问题。利用深窄间隙埋弧焊接方法成功制造了外径尺寸为2 500 mm，厚度达150 mm的转子模拟件，采用多层双道焊接方法，实现了良好的侧壁熔合效果，且未发现夹杂等缺陷，表面该焊接接头具有较高的成形质量。基于该焊接接头开展冲击韧度、拉伸等力学性能试验，表明该接头的力学性能完全满足使用需求。从而验证了深窄间隙焊接技术在大厚度核电转子焊接中应用的可靠性。

关键词: 大厚度, 构件材料, 力学性能, 深窄间隙埋弧焊

Abstract: As a high efficiency welding method, narrow gap welding(NGW) technology has many advantages like reducing deposition amount and save manufacturing time, which makes NGW has bright future in manufacturing large scale component with heavy section. However, the welding process stability and fusion of sidewall with base metal(BM) become big issue in making high quality welded joint. A mock-up of rotor with a diameter of 2 500 mm and 150 mm thickness is successfully welded with deep-narrow gap submerged arc welding (DNG-SAW) method. The weld quality could meet the requirement with good fusion of sidewalls of BM without other defects. Based on this welded joint, some mechanical properties such as impact toughness, tensile and hardness teat are carried out to quality the reliability of welded joint. The results show that all the mechanical properties could meet the requirement of design, which further proves that DNG-SAW is effective to weld big component with heavy section.

Key words: component materials, deep narrow gap submerged arc welding, heavy section, mechanical properties

中图分类号:

TG445

王朋, 刘霞, 芦凤桂. 深窄间隙焊接技术在大厚度构件材料焊接中的应用研究[J]. 机械工程学报, 2016, 52(2): 56-61.

WANG Peng, LIU Xia, LU Fenggui. Application of Deep-narrow Gap Welding Method in Manufacturing Component with Heavy Section[J]. Journal of Mechanical Engineering, 2016, 52(2): 56-61.

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深窄间隙焊接技术在大厚度构件材料焊接中的应用研究

Application of Deep-narrow Gap Welding Method in Manufacturing Component with Heavy Section

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