AWS Welding Inspection and Testing Certification Practice Test

Which type of weld is used to build up thin surfaces for protection?

1. Edge weld

2. Flare weld

3. Flange weld

4. Surfacing weld

The correct answer is: Surfacing weld

The surfacing weld is specifically designed for building up thin surfaces for protection. This technique involves applying a layer of weld metal to surfaces that may require enhancement in terms of wear resistance, corrosion resistance, or overall durability. Surfacing welds are typically used in applications where the base material is subject to wear or degradation, such as in heavy machinery, pipelines, and structural components that face harsh environments. This method allows for the extension of the life of a component without replacing it, which can be both cost-effective and efficient. Various materials can be used for surfacing, depending on the specific protection required, effectively creating a protective barrier on the operative surfaces. The other options refer to different types of weld joints that serve specific purposes but do not primarily focus on building up surfaces for protection in the same way that surfacing welds do. Edge welds, flare welds, and flange welds are used for joining parts together but do not provide the same protective functionality associated with surfacing techniques.