GB1404374A - Tungsten inert gas arc welding striking device - Google Patents

Tungsten inert gas arc welding striking device

Info

Publication number
GB1404374A
GB1404374A GB735473A GB735473A GB1404374A GB 1404374 A GB1404374 A GB 1404374A GB 735473 A GB735473 A GB 735473A GB 735473 A GB735473 A GB 735473A GB 1404374 A GB1404374 A GB 1404374A
Authority
GB
United Kingdom
Prior art keywords
welding
arc
capacitor
coil
pulse
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
GB735473A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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
Priority claimed from JP1758772A external-priority patent/JPS4885452A/ja
Priority claimed from JP1759172A external-priority patent/JPS4885456A/ja
Priority claimed from JP1759072A external-priority patent/JPS4885455A/ja
Priority claimed from JP1758572A external-priority patent/JPS4885450A/ja
Priority claimed from JP1758672A external-priority patent/JPS4885451A/ja
Priority claimed from JP1758872A external-priority patent/JPS4885453A/ja
Priority claimed from JP1759272A external-priority patent/JPS5237573B2/ja
Priority claimed from JP1758972A external-priority patent/JPS4885454A/ja
Priority claimed from JP11248972A external-priority patent/JPS4970846A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1404374A publication Critical patent/GB1404374A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
    • H03K3/55—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a gas-filled tube having a control electrode
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/067—Starting the arc
    • B23K9/0672—Starting the arc without direct contact between electrodes
    • B23K9/0673—Ionisation of the arc gap by means of a tension with a step front (pulses or high frequency tensions)
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • B23K9/0738—Stabilising of the arc by automatic re-ignition means
    • 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
    • B23K9/1006—Power supply
    • B23K9/1012—Power supply characterised by parts of the process
    • B23K9/1025—Means for suppressing or reducing DC components in AC arc welding installations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
    • H03K3/537—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a spark gap

Abstract

1404374 Ignition apparatus for arc welding systems MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 14 Feb 1973 [18 Feb 1972 (8) 8 Nov 1972] 7354/73 Heading H2H Ignition apparatus for striking an arc in an arc welding machine comprises means whereby the charge on a capacitor is caused to discharge through a coil in a single pulse at any desired instant in the half cycles of the normal welding current whereby a voltage pulse is injected into the welding circuit so as to strike an arc. An A.C. source is connected to a terminal 2 so as to supply current to a welding electrode connected to a terminal 3 by way of a coil CC magnetically coupled to a coil L, the coil L being connected in a closed circuit including a capacitor C1 and a discharge type switch SW having main electrodes 4, 5 and a trigger electrode P. The capacitor C1 is charged from a D.C. source E1. When it is desired to initiate an arc in the welding machine a pulse is applied to a thyristor SW1 whereupon a capacitor C2, which has been previously charged from a D.C. source E2, discharges through an autotransformer I.C. thus to produce a pulse at the trigger electrode P of the discharge switch SW. The switch SW becomes conductive so that the capacitor C1 discharges through the coil L thereby inducing a single pulse into the coil CC to initiate an arc in the welding machine. When it is desired to re-strike an arc during welding it has been found to be preferable to have the capacitor to C1 charged to a lower potential and the capacitor C2 to a higher potential and to this end switches SW2, SW3 are provided. Alternatively the capacitance of C2 may be variable. The trigger pulse for the switch SW may be arranged at any desired instant in the waveform of the welding current supply and it may further be arranged that the positive and negative half cycles of the welding current have the same effective value. The welding voltage waveform may be rectified and compared with a D.C. reference voltage to provide a pulse for the switch SW. It is said that the interference produced by the apparatus of the invention is reduced from that of a known spark type arc striking apparatus.
GB735473A 1972-02-18 1973-02-14 Tungsten inert gas arc welding striking device Expired GB1404374A (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP1758772A JPS4885452A (en) 1972-02-18 1972-02-18
JP1759172A JPS4885456A (en) 1972-02-18 1972-02-18
JP1759072A JPS4885455A (en) 1972-02-18 1972-02-18
JP1758572A JPS4885450A (en) 1972-02-18 1972-02-18
JP1758672A JPS4885451A (en) 1972-02-18 1972-02-18
JP1758872A JPS4885453A (en) 1972-02-18 1972-02-18
JP1759272A JPS5237573B2 (en) 1972-02-18 1972-02-18
JP1758972A JPS4885454A (en) 1972-02-18 1972-02-18
JP11248972A JPS4970846A (en) 1972-11-08 1972-11-08

Publications (1)

Publication Number Publication Date
GB1404374A true GB1404374A (en) 1975-08-28

Family

ID=27576695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB735473A Expired GB1404374A (en) 1972-02-18 1973-02-14 Tungsten inert gas arc welding striking device

Country Status (6)

Country Link
US (1) US3876855A (en)
CA (1) CA979076A (en)
DE (1) DE2307753C2 (en)
FR (1) FR2172385B1 (en)
GB (1) GB1404374A (en)
NL (1) NL163733C (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225769A (en) * 1977-09-26 1980-09-30 Thermal Dynamics Corporation Plasma torch starting circuit
CH649518A5 (en) * 1979-08-02 1985-05-31 Bbc Brown Boveri & Cie METHOD AND CIRCUIT ARRANGEMENT FOR CARRYING OUT GAS DISCHARGE REACTIONS.
JPS575293A (en) * 1980-06-12 1982-01-12 Matsushita Electric Ind Co Ltd Device for firing high voltage discharge lamp
US4678888A (en) * 1983-01-21 1987-07-07 Plasma Energy Corporation Power circuit apparatus for starting and operating plasma arc
US4501947A (en) * 1983-12-15 1985-02-26 Kerlin Jack H Electric arc unbalance correction system
US4682084A (en) * 1985-08-28 1987-07-21 Innovative Controls, Incorporated High intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp
US4686428A (en) * 1985-08-28 1987-08-11 Innovative Controls, Incorporated High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop
US4767912A (en) * 1986-08-25 1988-08-30 Esab Welding Products, Inc. High frequency arc stabilizer
US4999547A (en) * 1986-09-25 1991-03-12 Innovative Controls, Incorporated Ballast for high pressure sodium lamps having constant line and lamp wattage
US5159174A (en) * 1990-11-01 1992-10-27 Westinghouse Electric Corp. Nonconsumable electrode for stainless steel welding and method of welding
US5117088A (en) * 1991-03-13 1992-05-26 The Lincoln Electric Company Device and method for starting electric arc of a welder
US9108263B2 (en) * 2007-04-30 2015-08-18 Illinois Tool Works Inc. Welding power source with automatic variable high frequency
CN102179596B (en) * 2011-05-13 2015-05-13 杭州恒湖科技有限公司 Arc striking circuit for argon arc welding
CN103331505B (en) * 2013-07-12 2015-05-27 宣浩 Electric spark bead welding circuit
CN103817399B (en) * 2014-02-20 2016-08-17 河南科技大学 Multiple-pulse digital control type electric spark deposition built-up welding power supply
EP3482862A1 (en) * 2017-11-08 2019-05-15 FRONIUS INTERNATIONAL GmbH Method for contactless ignition of an arc and welding power source for carrying out an ignition method

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235385A (en) * 1939-03-23 1941-03-18 Rava Alexander Welding method and apparatus
US2399415A (en) * 1943-05-08 1946-04-30 Westinghouse Electric Corp Arc welding system
US2659036A (en) * 1950-08-11 1953-11-10 Era Patents Ltd Alternating current arc welding equipment
FR1088586A (en) * 1953-07-30 1955-03-08 Soudure Autogene Francaise Device for starting and stabilizing a welding arc
DE1002097B (en) * 1956-02-25 1957-02-07 Linde Eismasch Ag Device for stabilizing an alternating current welding arc when the current crosses zero by means of a pulse transformer
DE1011095B (en) * 1956-03-22 1957-06-27 Siemens Ag High frequency ignition device for alternating current arcs, especially for welding with a spark gap
US3154719A (en) * 1961-09-11 1964-10-27 Welding Research Inc Arc starting system
US3328637A (en) * 1965-02-11 1967-06-27 Harnischfeger Corp Alternating current arc power source
US3444431A (en) * 1965-10-23 1969-05-13 Eg & G Inc Electric flash beacon
US3474258A (en) * 1967-03-03 1969-10-21 Weston Instruments Inc Solid state relays
DE1615363C3 (en) * 1967-07-04 1974-11-07 Messer Griesheim Gmbh, 6000 Frankfurt Device for stabilizing and igniting welding arcs using current pulses
US3551741A (en) * 1967-07-04 1970-12-29 Linde Ag Arc striking or stabilization network having a detecting transformer and capacitor connected to the electrode
GB1241959A (en) * 1967-12-19 1971-08-11 British Oxygen Co Ltd Electric arc welding
US3588465A (en) * 1968-10-29 1971-06-28 Air Reduction Line voltage compensating pulsed power welding supply
DE1928757C3 (en) * 1969-06-06 1978-11-23 Messer Griesheim Gmbh, 6000 Frankfurt Circuit arrangement for stabilizing and igniting welding arcs
US3780258A (en) * 1971-06-17 1973-12-18 Air Prod & Chem Alternating current arc power source having opposite polarity ignition pulse

Also Published As

Publication number Publication date
NL7302181A (en) 1973-08-21
NL163733B (en) 1980-05-16
FR2172385B1 (en) 1977-08-19
US3876855A (en) 1975-04-08
DE2307753C2 (en) 1981-12-10
CA979076A (en) 1975-12-02
FR2172385A1 (en) 1973-09-28
DE2307753A1 (en) 1973-08-23
NL163733C (en) 1980-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19930212