Edge Break Geometry
Edge break geometry refers to mechanically deburring or preparing sharp sheet edges before joining to avoid stress peaks and corrosion attack. It promotes clean bonding of the cap layer.
Physicochemical Mechanism of Action
Edge break geometry reduces stresses at sharp sheet edges through mechanical deburring. This prevents stress peaks that could lead to cracks. It also promotes clean bonding of the cap layer and reduces corrosion susceptibility.
Metallurgical Relevance & Risks in Welding
Without edge break geometry, sharp edges can cause high stress peaks, leading to cracks. This can result in a failed joining process and an unsafe connection. Additionally, corrosion susceptibility increases at sharp edges.
Workshop Practice & Instructions
Before joining, deburr the sheet edges mechanically to make them smooth and rounded. This can be done with a fine deburring tool or a deburring operation with a machine grip. The exact method depends on the material and the desired joining type.