Improving Weld Accuracy and Reducing Production Time through Fixture-Assisted TIG Welding

Welding quality is a critical determinant of structural integrity and production efficiency in precision manufacturing. However, conventional steel frame fabrication processes often suffer from inconsistencies, dimensional inaccuracies, and extended setup durations due to the lack of standardized welding fixtures. This research investigates the influence of welding jig design on manufacturing performance and dimensional accuracy through a comparative analysis of conventional and jig-assisted welding methods. A case study approach was employed, integrating stopwatch time study techniques and quality assessment protocols to quantify productivity and precision improvements. Experimental procedures evaluated five complete fabrication cycles for each method using Westinghouse performance ratings, element-based time recording, and Coordinate Measuring Machine (CMM) distortion measurements across nine critical points. The findings indicate that the application of welding jigs substantially enhances process efficiency and product quality. Total fabrication time decreased from approximately 25.8 hours to 19.9 hours per frame, achieving a 23% improvement in productivity. Dimensional complian