A microcomputer-aided system for selecting arc-welding process parameters

The finite-element method is used to establish a mathematical model of heat transfer in arc welding. The 800-500°C cooling time (the t_8/5 time) of the metal adjacent to the weld junction can be precisely calculated by the model. The quantitative relationships between the welding process parameters, the value of t _8/5, the microstructures and the properties of a welded joint are set up, based on experiential formulae and data. A microcomputer-aided system for selecting the arc-welding process parameters has been developed, based on these relationships. The system is designed to run on an IBM-PC or compatible computer