TWI Industrial Member Report Summary 80/1978
By J C McGlone and D B Chadwick
The possibility of establishing a series of mathematical relationships between the major welding parameters and weld bead geometry has been studied for square edge and single v close butt submerged-arc welding of mild steel. It has been found that a set of equations can be formed to predict with reasonable accuracy the geometric measurements of the weld bead. The immediate possibilities of application of these relationships by incorporation into an interactive computer program for the procedure selection of two-pass and multi-pass submerged-arc butt welds has been outlined. The long term view of employing the equations in order to establish control loops for the accurate regulation of the arc parameters in mechanised or automated welding equipment, now coming into use, has been discussed.