NOZZLE FOR PLASMA CUTTING APPARATUS, AND PLASMA TORCH

NOZZLE FOR PLASMA CUTTING APPARATUS, AND PLASMA TORCH

PROBLEM TO BE SOLVED: To restrain a fall in cutting quality due to an electrode material sticking to the inner surface of a nozzle including the inner surface of an orifice.SOLUTION: The nozzle 6 for a plasma cutting apparatus for jetting a plasma jet to a workpiece disposed on the tip side to cut t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MINONISHI MIKIO, YAMAGUCHI YOSHIHIRO, SAIBI KATSUO, MORIMOTO SHIGEO, TSUNEKAWA KAZUNORI
Format: Patent
Sprache:eng
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:PROBLEM TO BE SOLVED: To restrain a fall in cutting quality due to an electrode material sticking to the inner surface of a nozzle including the inner surface of an orifice.SOLUTION: The nozzle 6 for a plasma cutting apparatus for jetting a plasma jet to a workpiece disposed on the tip side to cut the workpiece includes a cylindrical part 6a and a tip part 6b. The cylindrical part has an internal space formed with a tapered inner surface 25b reduced in diameter toward the tip side. The tip part 6b is formed on the tip side of the cylindrical part 6a, and has the orifice 26 formed further on the tip side of the tapered inner surface 25b, and a tip surface 26a facing the workpiece. A film C made of a ceramic material is formed on the tapered inner surface 25b and on the inner surface of the orifice 26. A taper angle of the tapered inner surface 25b is 80° or more and 105° or less.