Scan Vector Strategy Optimization
The deliberate arrangement and rotation of laser exposure paths per layer to reduce thermally induced residual stresses and distortion.
Physico-Chemical Mechanism of Action
Scan vector strategy optimization refers to precise control of the laser's movement across the workpiece. By deliberately arranging and rotating laser exposure paths, the thermal behavior of the material during welding is influenced. This prevents uneven heat absorption, which could cause thermal stresses.
Metallurgical Relevance & Risks in Welding
Random or faulty laser exposure paths can lead to thermally induced residual stresses and distortion. These can cause cracks, fractures, or poor weld strength. Optimizing the scan vector minimizes these risks and improves weld quality.
Workshop Practice & Instructions
To implement scan vector strategy optimization, the following measures should be taken:
1. Use CAD software to plan laser exposure paths.
2. Ensure laser exposure paths are symmetric and evenly distributed over the workpiece.
3. Rotate exposure paths by 45 degrees or more between layers to minimize thermal stresses.
4. Continuously monitor the material's temperature behavior during welding and adjust the scan vector strategy accordingly.