Scanning Strategy with Alternating Vectors
The alternating vector scanning strategy rotates the direction of the laser beam vectors from layer to layer to minimize thermal stresses and texture directionality.
Physical-Chemical Mechanism of Action
The scanning strategy with alternating vectors rotates the direction of the laser beam vectors from layer to layer. This prevents thermal stresses from building up in one particular direction and reduces directional dependencies in the microstructure.
Metallurgical Relevance & Welding Risks
If the direction of the laser beam vectors is not changed, thermal stresses can build up, leading to cracks or distortion. Alternating scanning minimizes these stresses and improves weld quality.
Workshop Practice & How-To Instructions
When laser welding, use a scanning strategy with alternating vectors. Rotate the direction of the laser beam vectors by 90 degrees from layer to layer. This can be set in the laser system's software.