Surface Roughness Modification in As-Built State

Physical-Chemical Mechanism of Action

After the additive manufacturing process (e.g., SLM), powder particles remain on the surface of the machined part. These particles affect surface roughness and can lead to uneven welding behavior.

Metallurgical Relevance & Welding Risks

The adhering powder particles can cause porosity, distortion risks, and poorer weld quality. They can also increase surface hardness and alter the microstructure.

Workshop Practice & Action Guidelines

Before welding, it is important to clean the surface thoroughly. This can be done by mechanical removal or chemical cleaning. High cleaning quality ensures a better weld and reduces the risk of defects.