Improving Processes of Mechanized Pulsed Arc Welding of Low-Frequency Range Variation of Mode Parameters

International Scientific and Practical Conference on Urgent Problems of Modern Mechanical Engineering

机械制造;材料科学

Saraev, Yu N.^1 ; Solodskiy, S.A.^2 ; Ulyanova, O.V.^3

Inst. of Strength Phys. and Mat. Science of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia^1

National Research Tomsk Polytechnic University, Yurga Institute of Technology, Tomsk, Russia^2

National Research Tomsk Polytechnic University, Yurga Institute of Technology, Yurga, Russia^3

关键词: Crystallization process;    Equilibrium structures;    Low frequency modulation;    Low frequency range;    New technologies;    Permanent joints;    Pulsed arc welding;    Theoretical study;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/127/1/012019/pdf
DOI  :  10.1088/1757-899X/127/1/012019

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A new technology of low-frequency modulation of the arc current in MAG and MIG welding is presented. The technology provides control of thermal and crystallization processes, stabilizes the time of formation and crystallization of the weld pool. Conducting theoretical studies allowed formulating the basic criteria for obtaining strong permanent joints for high-duty structures, providing conditions for more equilibrium structure of the deposited metal and the smaller width of the HAZ. The stabilization of time of the formation and crystallization of the weld pool improves the formation of the weld and increases productivity in welding thin sheet metal.