金属加工（热加工）Issue(6)：46-49,4.
304/Q345R复合板熔化极气体保护焊焊接工艺研究
Study on the welding process of 304/Q345R composite plate using metal active gas welding
富泉 1王占亮 1童立里 1周荣田 2熊操 2王梗蕊2
作者信息
- 1. 武汉重型机床集团有限公司 湖北武汉 430205
- 2. 湖北交投襄阳文旅发展有限公司 湖北襄阳 441000
- 折叠
摘要
Abstract
Composite plates have found widespread application in industrial manufacturing due to their superior properties.The welding process directly impacts the service life and performance of these composite plates.This study focuses on composite plates made of 304 stainless steel and Q345R steel,utilizing Metal Active Gas(MAG)welding technology to systematically evaluate the welded joints.Through the selection of materials,the setting of welding process parameters(welding current:180～200A,arc voltage:22～24V,welding speed:10～12cm/min),post-weld heat treatment,and non-destructive testing,the quality and performance of the welded joints were assessed.The base layer welding material was chosen as solid ER50-6 wire,the transition layer welding material as solid ER309 wire,and the cladding layer welding material as solid ER308 wire.Results indicate that appropriate selection of welding materials and process parameters is crucial for the welding quality of composite plates.Post-weld heat treatment significantly reduces the residual stress in the welded joints and improves the microstructure of the welded joints.The tensile strength of the welded joints reached 519～521MPa,the yield strength reached 359～374MPa,and the elongation after fracture reached 28.5％～30.0％.关键词
304/Q345R复合板/焊接工艺/焊接性能Key words
304/Q345R composite plate/welding procedure/welding performance引用本文复制引用
富泉,王占亮,童立里,周荣田,熊操,王梗蕊..304/Q345R复合板熔化极气体保护焊焊接工艺研究[J].金属加工（热加工）,2025,(6):46-49,4.
