It is no secret that welding is a complicated task. To be successful at welding, one must learn, train, practice, and be safe during the process. With such a complex process, there is unfortunately a lot of room for mistakes. In the world of welding, mistakes can be costly, especially when the product or structure is damaged. These six weld testing strategies will help you make the most of your latest welding project.
The key to ensuring safety during a weld is multiple inspections. The first of which is a visual inspection. Start at the drawing board. Make sure that the drawings are all correct, and then move onto the weld position. Does it correspond with the specification? Also, be sure to check the vertical direction of travel. Lastly, be sure to double-check local codes and weld specifications to ensure that the procedure is adhering to these guidelines.
In this step, make sure that the acquired materials are appropriate for the job. Check the specifications for base metal size and type, electrode size, gas selection, and gas grade. Be sure to check the materials for any defects, too. This includes things like rust, scale, and mill. Lastly, be sure that the materials are prepared for correct angles during the weld.
The assembly inspection should start by checking for fit. Next, align the fixtures and jigs and check to make sure everything is clean. Next, if tack welds are used, be sure to check the quality. The tack weld has to be made with the same electrode as the main welds. Lastly, check the use of preheat to slow the cooling rate of the metal.
This step involves inspecting the equipment to make sure there is no damage. This step also involves checking for arc voltage and the amperage meter for range.
Visual Inspection – During Welding
The inspection mustn’t stop when the project starts. The electrodes need to be checked for size, type, and storage. Each weld pass should be visually inspected as well as weld sequence and size.
After Welding Inspection
The last inspection will include checking the weld against designated code and standards and looking at small details, including finish and contour, overlap, and the undercut.