CA2065431A1 - Improved nozzle for a plasma arc torch - Google Patents

Improved nozzle for a plasma arc torch

Info

Publication number
CA2065431A1
CA2065431A1 CA2065431A CA2065431A CA2065431A1 CA 2065431 A1 CA2065431 A1 CA 2065431A1 CA 2065431 A CA2065431 A CA 2065431A CA 2065431 A CA2065431 A CA 2065431A CA 2065431 A1 CA2065431 A1 CA 2065431A1
Authority
CA
Canada
Prior art keywords
nozzle
electrode
plasma arc
adjacent
arc torch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2065431A
Other languages
French (fr)
Other versions
CA2065431C (en
Inventor
Nicholas A. Sanders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hypertherm Inc
Original Assignee
Nicholas A. Sanders
Hypertherm, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nicholas A. Sanders, Hypertherm, Inc. filed Critical Nicholas A. Sanders
Publication of CA2065431A1 publication Critical patent/CA2065431A1/en
Application granted granted Critical
Publication of CA2065431C publication Critical patent/CA2065431C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/30—Plasma torches using applied electromagnetic fields, e.g. high frequency or microwave energy

Abstract

A plasma arc torch mounts an electrode and a nozzle, with a mutual spacing, symmetrically about a common longitudinal axis at one end of the torch adjacent a workpiece. The inner surface of the nozzle has an annular, inwardly-directed projection, located opposite the electrode and at a point of closest spacing between the electrode and the nozzle. The projection, or "angle kink", is characterized by a minimum radius of curvature as compared to the radii of curvature of adjacent portions of the nozzle opposite said electrode. The inner surface is adjacent a central exit passage of the nozzle and the angle kink is spaced from the intersection of the exit port and the inner nozzle. In the preferred form the interior nozzle surface is formed by two conical surfaces each having different slopes with respect to the longitudinal axis so as to form the circumferentially extending angle kink at their plane of intersection.
CA002065431A 1989-10-20 1990-07-20 Improved nozzle for a plasma arc torch Expired - Fee Related CA2065431C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42467589A 1989-10-20 1989-10-20
US424,675 1989-10-20

Publications (2)

Publication Number Publication Date
CA2065431A1 true CA2065431A1 (en) 1991-04-21
CA2065431C CA2065431C (en) 1995-12-05

Family

ID=23683469

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002065431A Expired - Fee Related CA2065431C (en) 1989-10-20 1990-07-20 Improved nozzle for a plasma arc torch

Country Status (6)

Country Link
EP (1) EP0496733B1 (en)
JP (1) JPH05502189A (en)
AU (1) AU628617B2 (en)
CA (1) CA2065431C (en)
DE (1) DE69021736T2 (en)
WO (1) WO1991005629A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH687354A5 (en) * 1992-06-18 1996-11-15 Rodasky Etablissement Electrode for plasma cutting torch of metal
US5444209A (en) * 1993-08-11 1995-08-22 Miller Thermal, Inc. Dimensionally stable subsonic plasma arc spray gun with long wearing electrodes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914573A (en) * 1971-05-17 1975-10-21 Geotel Inc Coating heat softened particles by projection in a plasma stream of Mach 1 to Mach 3 velocity
JPS5546266A (en) * 1978-09-28 1980-03-31 Daido Steel Co Ltd Plasma torch
US4506136A (en) * 1982-10-12 1985-03-19 Metco, Inc. Plasma spray gun having a gas vortex producing nozzle

Also Published As

Publication number Publication date
JPH05502189A (en) 1993-04-22
AU6058290A (en) 1991-05-16
WO1991005629A1 (en) 1991-05-02
EP0496733A1 (en) 1992-08-05
AU628617B2 (en) 1992-09-17
CA2065431C (en) 1995-12-05
EP0496733A4 (en) 1992-06-03
EP0496733B1 (en) 1995-08-16
DE69021736D1 (en) 1995-09-21
DE69021736T2 (en) 1996-04-25

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed