Method and apparatus for removing material from metal workpieces

Details Method and apparatus for removing material from metal workpieces Method and apparatus for removing material from metal workpieces

1996-06-28

1998-12-08

Mills, Gregory L.

Electric heating

Metal heating

By arc

21912172, 21912173, 21912175, 21912184, B23K 2606, B23K 2614

Patent

active

058473580

ABSTRACT:
A method is disclosed for removing material from moving metal workpieces, 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.

REFERENCES:
patent: 3597578 (1971-08-01), Sullivan et al.
patent: 3604890 (1971-09-01), Mullaney
patent: 3965328 (1976-06-01), Locke
patent: 4084988 (1978-04-01), Engel et al.
patent: 4724297 (1988-02-01), Nielsen
patent: 4952770 (1990-08-01), Hayashi
patent: 5651904 (1997-07-01), Franke et al.

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