Some considerations regarding the thermal field at welded joints

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Cohal, V.^1

Gheorghe Asachi Technical University of Iasi-Romania, Department of Machine Manufacturing Technology, Blvd. Mangeron, No. 59A, Iasi

700050, Romania^1

关键词: Chemical compositions;    Complex metals;    Temperature values;    Thermal process;    Thermal source;    Transfer phenomenon;    Welding speed;    Welding technology;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/4/042011/pdf
DOI  :  10.1088/1757-899X/400/4/042011

来源: IOP

【 摘 要 】

Mathematical modelling and finite element analysis of the thermal processes, welding of complex metals in terms of chemical composition and structure, allowed to investigate and deepen the heat transfer phenomena and the establishment of a new technological variant of welding, The thermal field, in welding, is depending on the three modes of heat transfer: conductive, convective, manifested by heat losses in the atmosphere and the movement of the fluid in the molten metal bath and by radiation. For the connection of different materials thermo-physical it is proposed that the welding is achieved by moving the thermal source, along the joint, closer to the material characterized by higher thermal conductivity values. The mathematical model and finite element method solution is a modern and modern solution for the optimization of welding technologies, correlating the power developed by the electric arc and the welding speed, so that the final results are as close as possible to the temperature values and dimensions of the welding bath default.