Analysis on the Microstructure and Mechanical Properties of Welding Joint of Low Alloy Structural Steel Plate by Narrow Gap MAG

DOI

10.2991/meic-15.2015.21How to use a DOI?

Keywords

Q345B; welding; MAG; microstructure; property.

Abstract

The narrow gap automatic MAG welding equipment in this article is a narrow gap gas metal arc automatic welding system developed by Wuhan University, which has remarkable advantages of low heat input and high efficiency. The low heat input reduces the tendency of grain coarsening and other bad non-equilibrium structures in the weld microstructure, improving the mechanical properties of welding joints. Selecting the welding of low carbon low alloy structural steel-Q345B as the research object, this paper systematically analyses the microstructure and mechanical properties of Q345B welding joint by narrow gap automatic MAG welding process, it turns out that the weld joint obtains good mechanical properties in this way.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bingjun Chen
AU  - Wenkai Xiao
AU  - Li Zhu
AU  - Fuju Zhang
PY  - 2015/04
DA  - 2015/04
TI  - Analysis on the Microstructure and Mechanical Properties of Welding Joint of Low Alloy Structural Steel Plate by Narrow Gap MAG
BT  - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 84
EP  - 87
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-15.2015.21
DO  - 10.2991/meic-15.2015.21
ID  - Chen2015/04
ER  -