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US 2011/0210106 A1Published application
Method For Laser Fusion Cutting Without Cutting Gas
AssigneeTrumpf Laser GmbH
InventorsPeter Schaefer, Peter Olschowsky, Hubertus Melbert
Life of this patent
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Abstract
A method for laser fusion cutting of a metal workpiece including applying a laser beam to the workpiece, where a kerf is melted in the workpiece by the laser beam and a laser beam diameter in a working point is configured to expel molten material from the kerf without cutting gas.
Claims19
A method for laser fusion cutting of a metal workpiece, comprising:
- applying a laser beam to the metal workpiece such that a kerf is melted in the workpiece by the laser beam, wherein the laser beam has a power density of 10 kW/mm2 to 50 kW/mm2 and a diameter sufficient to cause molten material to be expelled from the kerf without cutting gas;
- producing at least one gas flow directed towards the workpiece to confine air containing metal vapor generated as a result of the laser contacting the workpiece to an area no greater than 150 mm in front of a point at which the laser beam is contacting the workpiece.
A method for laser fusion cutting of a metal workpiece, the method comprising:
- applying a laser beam to the metal workpiece such that a kerf is melted in the workpiece by the laser beam, wherein the laser beam has a diameter sufficient to expel molten material from the kerf without the use of cutting gas.
Dependencies are inferred from the claim text.