PLASMA CUTTING METHOD AND APPARATUS

The invention relates to a method of cutting a workpiece (40) by means of a plasma arc (2), wherein a device (1) for cutting a workpiece (40) is provided, a pre gas flow is provided around the electrode (11), subsequently to the pre gas flow, a main gas flow (32) is provided around the electrode (11...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Hussary, Nakhleh A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention relates to a method of cutting a workpiece (40) by means of a plasma arc (2), wherein a device (1) for cutting a workpiece (40) is provided, a pre gas flow is provided around the electrode (11), subsequently to the pre gas flow, a main gas flow (32) is provided around the electrode (11), wherein the main gas flow (32) comprises an oxidizing gas, a plasma arc (2) is generated between the electrode (11) and the workpiece (40), wherein said workpiece (40) is cut by means of said plasma arc (2), and wherein said pre gas flow comprises an oxidizing gas at a concentration of 50 ppm to 10000 ppm. The invention further relates to a device (1) for cutting a workpiece (40).