EP1061781A3 - Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided - Google Patents

Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided Download PDF

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Publication number
EP1061781A3
EP1061781A3 EP00110980A EP00110980A EP1061781A3 EP 1061781 A3 EP1061781 A3 EP 1061781A3 EP 00110980 A EP00110980 A EP 00110980A EP 00110980 A EP00110980 A EP 00110980A EP 1061781 A3 EP1061781 A3 EP 1061781A3
Authority
EP
European Patent Office
Prior art keywords
electrode
electric arc
seat
providing
starting point
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.)
Withdrawn
Application number
EP00110980A
Other languages
German (de)
French (fr)
Other versions
EP1061781A2 (en
Inventor
Giorgio Bassi
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.)
Tecmo SRL
Original Assignee
Tecmo SRL
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 Tecmo SRL filed Critical Tecmo SRL
Publication of EP1061781A2 publication Critical patent/EP1061781A2/en
Publication of EP1061781A3 publication Critical patent/EP1061781A3/en
Withdrawn legal-status Critical Current

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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
    • H05H1/3442—Cathodes with inserted tip

Abstract

A method for providing the starting point of an electric arc in an electrode (1) of a thermal plasma cutting torch, comprising the steps of: forming a substantially cylindrical axial seat (3) in the electrode (1), at the end from which the electric arc must start, the seat (3) being adapted to receive, with tolerance, a substantially cylindrical insert (4) made of hafnium or zirconium, and heading the insert (4) inside the seat (3) so as to produce a stable and uniform intimate contact of its outer surface with the inner surface of the seat (3) which is adapted to firmly retain the insert (4) in the seat (3).
EP00110980A 1999-06-14 2000-05-29 Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided Withdrawn EP1061781A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999BO000319A IT1309290B1 (en) 1999-06-14 1999-06-14 PROCEDURE FOR THE IMPLEMENTATION OF THE ARCHOVOLTAIC LOCKING POINT IN THE ELECTRODE OF A PLASMA CUTTING TORCH AND
ITBO990319 1999-06-14

Publications (2)

Publication Number Publication Date
EP1061781A2 EP1061781A2 (en) 2000-12-20
EP1061781A3 true EP1061781A3 (en) 2002-10-16

Family

ID=11344048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110980A Withdrawn EP1061781A3 (en) 1999-06-14 2000-05-29 Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided

Country Status (2)

Country Link
EP (1) EP1061781A3 (en)
IT (1) IT1309290B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1260021A (en) * 1969-10-27 1972-01-12 British Titan Ltd Heating device
US4055741A (en) * 1975-12-08 1977-10-25 David Grigorievich Bykhovsky Plasma arc torch
EP0437915A2 (en) * 1990-01-17 1991-07-24 ESAB Welding Products, Inc. Electrode for plasma ARC torch
WO1996004771A1 (en) * 1994-07-29 1996-02-15 Hypertherm, Inc. Electrode for a plasma arc torch
EP0787556A1 (en) * 1996-02-02 1997-08-06 Thermal Dynamics Corporation Electrode for a plasma-arc torch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1260021A (en) * 1969-10-27 1972-01-12 British Titan Ltd Heating device
US4055741A (en) * 1975-12-08 1977-10-25 David Grigorievich Bykhovsky Plasma arc torch
EP0437915A2 (en) * 1990-01-17 1991-07-24 ESAB Welding Products, Inc. Electrode for plasma ARC torch
WO1996004771A1 (en) * 1994-07-29 1996-02-15 Hypertherm, Inc. Electrode for a plasma arc torch
EP0787556A1 (en) * 1996-02-02 1997-08-06 Thermal Dynamics Corporation Electrode for a plasma-arc torch

Also Published As

Publication number Publication date
EP1061781A2 (en) 2000-12-20
ITBO990319A0 (en) 1999-06-14
IT1309290B1 (en) 2002-01-22
ITBO990319A1 (en) 2000-12-14

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