FR2229493A1 - Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle - Google Patents

Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle

Info

Publication number
FR2229493A1
FR2229493A1 FR7317776A FR7317776A FR2229493A1 FR 2229493 A1 FR2229493 A1 FR 2229493A1 FR 7317776 A FR7317776 A FR 7317776A FR 7317776 A FR7317776 A FR 7317776A FR 2229493 A1 FR2229493 A1 FR 2229493A1
Authority
FR
France
Prior art keywords
nozzle
supplied
plasma gun
rolling
current
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
FR7317776A
Other languages
French (fr)
Other versions
FR2229493B1 (en
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.)
PK TEKHNO
Original Assignee
PK TEKHNO
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
Priority to DE19732314741 priority Critical patent/DE2314741C3/en
Application filed by PK TEKHNO filed Critical PK TEKHNO
Priority to FR7317776A priority patent/FR2229493A1/en
Publication of FR2229493A1 publication Critical patent/FR2229493A1/en
Application granted granted Critical
Publication of FR2229493B1 publication Critical patent/FR2229493B1/fr
Granted 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
    • H05H1/44—Plasma torches using an arc using more than one torch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • B23K10/02—Plasma welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

The strip for rolling is joined by simultaneously carried out cleaning and welding by means of a twin nozzle plasma gun with separate gas feed into each nozzle in which are located electrically from each other insulated electrodes. These are supplied alternately with non-overlapping impulses of opposed polarity electrical current. The current density in the nozzle supplied with negative current is maintained >=30% larger than that in the nozzle with a positive current supply. An al-He gas mix is pref. supplied to the negative current carrying nozzle and A only is passed through the other. The method effects excellent surface oxide film removal on welding, permits maximum arc penetration depth and is fast. It is used in rolling mills for joining following-on steel coils etc. with each other prior to rolling especially for materials such as stainless steel.
FR7317776A 1973-05-16 1973-05-16 Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle Granted FR2229493A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19732314741 DE2314741C3 (en) 1973-03-24 Plasma welding process
FR7317776A FR2229493A1 (en) 1973-05-16 1973-05-16 Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7317776A FR2229493A1 (en) 1973-05-16 1973-05-16 Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle

Publications (2)

Publication Number Publication Date
FR2229493A1 true FR2229493A1 (en) 1974-12-13
FR2229493B1 FR2229493B1 (en) 1976-11-12

Family

ID=9119431

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7317776A Granted FR2229493A1 (en) 1973-05-16 1973-05-16 Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle

Country Status (1)

Country Link
FR (1) FR2229493A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522283A (en) * 1995-01-09 1996-06-04 International Paper Company Circular saw leveling and tensioning machine
EP1166942A2 (en) * 2000-06-21 2002-01-02 Inocon Technologie Gesellschaft m.b.H Plasma gun

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522283A (en) * 1995-01-09 1996-06-04 International Paper Company Circular saw leveling and tensioning machine
USRE36409E (en) * 1995-01-09 1999-11-30 International Paper Company Circular saw leveling and tensioning machine
USRE37833E1 (en) * 1995-01-09 2002-09-10 International Paper Company Circular saw leveling and tensioning machine
EP1166942A2 (en) * 2000-06-21 2002-01-02 Inocon Technologie Gesellschaft m.b.H Plasma gun
EP1166942A3 (en) * 2000-06-21 2004-01-02 Inocon Technologie Gesellschaft m.b.H Plasma gun

Also Published As

Publication number Publication date
DE2314741B2 (en) 1976-10-28
FR2229493B1 (en) 1976-11-12
DE2314741A1 (en) 1974-10-03

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Legal Events

Date Code Title Description
ST Notification of lapse