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

摘要

The finite-element method is used to establish a mathematical model of heat transfer in arc welding. The 800-500 degrees C cooling time (the t/sub 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/sub 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.