B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 26/06 (2006.01)
Patent
CA 2182671
A laser processing method establishes initial coupling between the laser beam and workpiece by irridiating an intermediate tool positioned adjacent the workpiece. The tool is more absorptive at the laser wavelength than the workpiece so that the efficiency of energy transfer is increased. Subsequent processing is performed by relative movement between the workpiece and beam, either independently of the tool or in conjunction with the tool. During furtheur processing, the beam diameter is increased to be greater than the thickness of the workpiece to enhance the further processing.
Un procédé de traitement au laser établit un couplage initial entre le faisceau laser et la pièce en exposant un outil intermédiaire, adjacent à la pièce, à un rayonnement. L'outil est plus absorbant à la longueur d'onde du laser que la pièce, de sorte que l'efficacité du transfert d'énergie en soit augmentée. On effectue un traitement ultérieur en appliquant un mouvement relatif à la pièce et au faisceau, soit indépendamment de l'outil, soit conjointement avec celui-ci. On poursuit le traitement en élargissant le diamètre du faisceau de façon qu'il soit supérieur à l'épaisseur de la pièce, ce qui permet d'améliorer le traitement ultérieur.
Duley Walter W.
Kinsman Kenneth Grant
Mccarthy Tetrault Llp
Powerlasers Ltd.
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