Method for removing material from metal workpieces moved relative to the removal tool
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United States of America Patent
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Jul 29, 1997
Grant Date -
N/A
app pub date -
Jul 13, 1994
filing date -
Nov 19, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed for removing material from moving metal workpieces, in particular for cutting sheet metal. It entails preheating, without melting, the surface of the workpiece to a temperature at which ignition is triggered by a combustible gas directed onto the preheated section as a jet under pressure, while burnt material from the workpiece is blown away from the cut recess thus produced. In order to achieve smooth edges on large-gauge workpieces with a relatively high feed-rate, a laser beam is also directed onto the cutting front in the cut recess.
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