What are the welding appearance requirements and weld quality inspections?

Date：2023-03-28 15:17:20Views：578

Visual inspection during welding can be used to evaluate welding quality and determine whether there are defects. These inspections are mainly carried out according to specific situations and relevant standards and specifications. These inspections are usually carried out by experienced welding inspectors who will use various tools, such as magnifying glasses, steel rulers, calipers, angle measuring devices, and so on. These requirements and standard specifications can vary depending on different welding methods, materials, and application areas.

Common weld appearance inspections include:

Weld appearance: The weld should be uniform, continuous, and smooth, without cracks, pores, slag inclusions, undercuts, and other defects.

Weld shape: The shape of the weld should meet the design requirements, and should comply with relevant standards and specifications, such as straight lines, arcs, etc.

Weld size: The size of the weld should meet the design requirements, and should comply with relevant standards and specifications, such as weld width, depth, etc.

Geometry of welds: The geometry of welds should meet design requirements and comply with relevant standards and specifications, such as weld inclination, angle, etc.

Welding deformation: Welding deformation should be controlled within a reasonable range and should not have adverse effects on the entire structure.

Integrity of welded structure: The welded structure should be complete, without defects or loose parts.

Welding surface quality: The welding surface should be clean and free of oil stains, rust, etc.

Air holes: Air holes are one of the most common defects in welding. Inspectors should check whether there are air holes on the welding surface, as well as their size and quantity.

Undercut: Undercut in welding refers to the interlayer between the weld and the base metal, which may reduce the strength and toughness of the weld. The inspector should inspect the welding surface for undercuts and confirm their extent and quantity.

Slag inclusion: Slag inclusion refers to substances that remain in the weld seam due to failure to remove impurities and dross during the welding process. The inspector should check whether there is slag inclusion on the weld surface, and confirm its degree and quantity.

Crack: A crack is a defect in welding that may reduce the strength and toughness of the weld. The inspector should inspect the weld surface for cracks and confirm their extent and quantity.

Coating of welds: Sometimes, in order to protect the welded structure from corrosion, a protective layer is applied to the welding surface. The inspector should check whether the coating is uniform, complete, and meets the requirements.

Welding position: The inspector should confirm whether the weld is carried out in the correct position and meets the design requirements.

In summary, visual inspection of welding surfaces should be conducted by experienced inspectors to ensure that the welding quality meets relevant requirements and standards. The above is the "welding appearance requirements" related content brought by this core breaking test. I hope it can be helpful to everyone. We will bring more exciting content later. The company's testing services cover a variety of testing projects, including electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection, and tape weaving. Welcome to call Chuangxin Testing, and we will wholeheartedly serve you.