Cap undercut is a weld defect characterized by the formation of a groove or depression at the toe of the weld bead where it meets the base metal. This defect typically occurs due to improper welding technique, such as excessive heat input or incorrect electrode angle, leading to the melting or removal of base metal at the weld’s edge. Cap […]
Cluster porosity in welding refers to the presence of multiple small voids or gas pockets clustered together within the weld metal. This defect occurs when gas, typically hydrogen or nitrogen, becomes trapped in the weld pool during solidification. Cluster porosity can compromise the structural integrity and mechanical properties of the weld joint, leading to issues such as reduced strength, increased […]
Silica inclusions in welding refer to a weld defect where small particles or pockets of silica, commonly found in welding flux or on the surface of base metal, become trapped within the weld metal during the welding process. Silica inclusions can compromise the structural integrity and mechanical properties of the weld joint, leading to issues such as reduced strength, increased […]
“Flush weld” is not typically considered a weld defect; rather, it is a term used to describe a specific type of weld joint configuration where the surface of the weld is level or flush with the surface of the base metal. A flush weld is often desired in many welding applications, particularly in structural welding or fabrication, where aesthetics and […]
Unfused filler wire, also known as lack of fusion with filler wire, is a weld defect that occurs when the filler wire fails to fuse properly with the base metal or previously deposited weld metal. This defect typically arises due to improper welding parameters, inadequate heat input, or improper welding technique. Unfused filler wire can compromise the structural integrity and […]
“No weld metal” is not typically considered a weld defect, as it refers to the absence of weld metal in a specific area where welding was intended to occur. This situation can arise due to various reasons, such as incomplete fusion, lack of penetration, or improper welding technique. While it is not a defect in itself, the absence of weld […]
Copper inclusions in welding refer to a weld defect where small particles or droplets of copper are inadvertently incorporated into the weld metal during the welding process. This defect typically occurs when copper contamination is present on the surface of the base metal, filler metal, or welding equipment. Copper inclusions can compromise the structural integrity and mechanical properties of the […]
HAZ (Heat Affected Zone) cracking, also known as heat-affected zone cracking or HAZ crack, is a type of weld defect that occurs in the area adjacent to the weld zone, known as the heat-affected zone. This defect typically happens due to the formation of brittle microstructures within the heat-affected zone during the welding process. HAZ cracking can compromise the structural […]
“Hard stamping” in welding refers to a defect where excessive force is applied to the weld during post-weld processing, such as stamping, grinding, or machining. This excessive force can cause deformation or cracking of the weld metal, leading to compromised structural integrity and mechanical properties. The impact of hard stamping on weld quality can be significant, as it can result […]
Wormholes in welding refer to a defect where small cavities or voids are present within the weld metal. These cavities typically appear as interconnected channels or tunnels running through the weld, resembling the shape of a wormhole. Wormholes can occur due to various factors such as improper shielding gas coverage, electrode contamination, or inadequate welding technique. This defect can compromise […]