Weld Defect Analysis
Most weld defects are easily avoidable. Cleanliness of the metal, proper heat control and good geometry are necessary for sound welds. One of the most critical elements is choosing the correct welding procedure for the material.
If the material is unknown, we can identify it for you. In addition, we can identify the most likely causes of weld failures or defects.
During welding, excess heat can cause microstructural changes in the surrounding metal. This is known as the Heat Affected Zone (HAZ), and it can effect performance of the welded product. A microhardness survey can determine how far the HAZ extends and will look for the presence of embrittlement.
For QA/QC, we can qualify weld procedures and welders per AWS, ASME, API or relevant welding standard.
Weld Procedure Qualification typically includes tensile testing and bend testing. Occasionally Charpy testing is also required. Bend testing can include either Face and Root, or Side bends, depending on the material.
Qualifies a welder for a specific procedure, typically requires only bends and/or macroetch.