Cut surface roughness
Cut roughness is a measure of the surface quality on cut edges, resulting from flow and vibration phenomena during the cutting process. It affects the behavior of the cut surface under mechanical stress.
Physical-Chemical Mechanism of Action
Cut roughness arises from micro-scale irregularities and grooves on the cut edge, which are formed during the cutting process due to flow and vibration phenomena. These microstructures affect the mechanical load capacity of the cut surface.
Metallurgical Relevance & Welding Risks
High cut roughness can lead to cracks and wear under mechanical stress. This can be a problem especially under high loads or with materials of low toughness. A low roughness value improves the service life of components.
Workshop Practice & Action Instructions
To achieve low cut roughness, the following measures should be taken when welding and cutting:
• Use high-quality tools with good cutting edges.
• Keep the cutting speed constant and not too fast.
• Ensure that the workpiece is stable and motionless during cutting.
• Regularly inspect the surface for micro-scale irregularities and grooves.