METHOD FOR REMOVING MATERIAL FROM MOVING METAL WORKPIECES

摘要

A method is disclosed for removing material from moving metal workpieces (10), in particular for cutting sheet metal. It entails preheating, without melting, the surface (11) of the workpiece (10) to a temperature at which ignition is triggered by a combustible gas (12) directed onto the preheated section (13) as a jet under pressure, while burnt material from the workpiece (10) is blown away from the cut recess (14) thus produced. In order to achieve smooth edges on large-gauge workpieces with a relatively high feed-rate, a laser beam (15) is also directed onto the cutting front (16) in the cut recess.