Models for selecting GMA Welding Parameters for Improving Mechanical Properties of Weld Joints

2nd International Manufacturing Engineering Conference; 3rd Asia-Pacific Conference on Manufacturing Systems

Rao, P. Srinivasa^1 ; Ramachandran, Pragash^1 ; Jebaraj, S.^1

Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak

32610, Malaysia^1

关键词: Constructional steels;    depth of penetration;    Gas metal arcs;    GMA welding;    Joint strength;    Small variations;    Welding current;    Welding parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/114/1/012027/pdf
DOI  :  10.1088/1757-899X/114/1/012027

来源: IOP

【 摘 要 】

During the process of Gas Metal Arc (GMAW) welding, the weld joints mechanical properties are influenced by the welding parameters such as welding current and arc voltage. These parameters directly will influence the quality of the weld in terms of mechanical properties. Even small variation in any of the cited parameters may have an important effect on depth of penetration and on joint strength. In this study, S45C Constructional Steel is taken as the base metal to be tested using the parameters wire feed rate, voltage and type of shielding gas. Physical properties considered in the present study are tensile strength and hardness. The testing of weld specimen is carried out as per ASTM Standards. Mathematical models to predict the tensile strength and depth of penetration of weld joint have been developed by regression analysis using the experimental results.