GB1293350A - Electric arc welding - Google Patents

Electric arc welding

Info

Publication number
GB1293350A
GB1293350A GB6077068A GB6077068A GB1293350A GB 1293350 A GB1293350 A GB 1293350A GB 6077068 A GB6077068 A GB 6077068A GB 6077068 A GB6077068 A GB 6077068A GB 1293350 A GB1293350 A GB 1293350A
Authority
GB
United Kingdom
Prior art keywords
switching device
arc
electrode
single phase
storage device
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.)
Expired
Application number
GB6077068A
Inventor
Peter Boughton
Eugene Patrick Barrett
Donald James Allison
John Anthony Lucey
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.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB6077068A priority Critical patent/GB1293350A/en
Priority to CH1885969A priority patent/CH518147A/en
Priority to DE19691963339 priority patent/DE1963339A1/en
Priority to BE743459D priority patent/BE743459A/xx
Priority to FR6944282A priority patent/FR2026745A1/fr
Priority to NL6919233A priority patent/NL6919233A/xx
Publication of GB1293350A publication Critical patent/GB1293350A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
    • B23K9/092—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits characterised by the shape of the pulses produced
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1081—Arc welding by means of accumulated energy

Abstract

1293350 Welding by fusion BRITISH OXYGEN CO Ltd 28 Nov 1969 [20 Dec 1968] 60770/68 Heading B3R [Also in Division H2] Apparatus for short circuit arc welding comprises a rectified single phase power source and an energy storage device together with a switching device which is operative to switch the energy storage device so that it augments the rectified single phase source during the periods when the arc is short circuit. By arranging that the switching device is responsive to the voltage between the electrode and the workpiece, the "dip frequency" can be greatly increased relatively to that in the prior art, namely in the order of 100-250 cycles per second. In a short circuit arc welding system a consumable electrode 4 is fed towards a workpiece 8 by means of feed rolls 6, the weld zone being indicated at 10. A single phase supply, obtained from an A.C. source E and a transformer T, is rectified by a full wave rectifier Z and fed to a smoothing circuit S. A regulating unit 12 is connected across the output of the rectifier Z and a serially connected switching device 16 and energy storage device 14 is connected to the outlet of the smoothing circuit S, in parallel with the electrode A and workpiece 8, the regulating unit 12 being connected to the junction between the switching device 16 and the storage device 14. When an arc exists between the electrode and workpiece the switching device 16 is non- conductive so that the arc is supplied only from the rectified single phase supply by way of the smoothing circuit S. When the electrode 4 " dips " into the weld 10 thereby short circuiting the arc, the switching device 16 becomes conductive and the energy stored in the device 14 augments the rectified single phase supply so causing rapid "burn-back" of the electrode 4 to re-establish the arc. The switching device 16 may be a diode or a thyristor and the storage device 14 a capacitor or an accumulator. The smoothing circuit comprises inductors and a capacitor in a T configuration and the inductors are wound on magnetic cores with non-uniform air-gaps therein. The inductors may have tapped windings and more than one circuit having series connected devices 14, 16 may be used.
GB6077068A 1968-12-20 1968-12-20 Electric arc welding Expired GB1293350A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB6077068A GB1293350A (en) 1968-12-20 1968-12-20 Electric arc welding
CH1885969A CH518147A (en) 1968-12-20 1969-12-17 Electric welding device and method of operating the same
DE19691963339 DE1963339A1 (en) 1968-12-20 1969-12-17 Circuit for electrical welding
BE743459D BE743459A (en) 1968-12-20 1969-12-19
FR6944282A FR2026745A1 (en) 1968-12-20 1969-12-19
NL6919233A NL6919233A (en) 1968-12-20 1969-12-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6077068A GB1293350A (en) 1968-12-20 1968-12-20 Electric arc welding

Publications (1)

Publication Number Publication Date
GB1293350A true GB1293350A (en) 1972-10-18

Family

ID=10486044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6077068A Expired GB1293350A (en) 1968-12-20 1968-12-20 Electric arc welding

Country Status (6)

Country Link
BE (1) BE743459A (en)
CH (1) CH518147A (en)
DE (1) DE1963339A1 (en)
FR (1) FR2026745A1 (en)
GB (1) GB1293350A (en)
NL (1) NL6919233A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010007053U1 (en) 2010-05-20 2010-10-07 Afk Andreas Franke Kunststoffverarbeitung Gmbh & Co. Kg Traffic signal trowel

Also Published As

Publication number Publication date
DE1963339A1 (en) 1970-07-16
NL6919233A (en) 1970-06-23
CH518147A (en) 1972-01-31
FR2026745A1 (en) 1970-09-18
BE743459A (en) 1970-05-28

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees