GB1090404A - Means for initiating electric arcs between spaced electrodes - Google Patents

Means for initiating electric arcs between spaced electrodes

Info

Publication number
GB1090404A
GB1090404A GB2954763A GB2954763A GB1090404A GB 1090404 A GB1090404 A GB 1090404A GB 2954763 A GB2954763 A GB 2954763A GB 2954763 A GB2954763 A GB 2954763A GB 1090404 A GB1090404 A GB 1090404A
Authority
GB
United Kingdom
Prior art keywords
capacitor
supply
rectifier
july
polarity
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
GB2954763A
Inventor
John Dennis Morris
John Edward Fawkes
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 GB2954763A priority Critical patent/GB1090404A/en
Publication of GB1090404A publication Critical patent/GB1090404A/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
    • B23K9/06—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)

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

1,090,404. Supply systems for welding arcs. BRITISH OXYGEN CO. Ltd. July 7, 1964 [July 25, 1963; Nov. 28, 1963], Nos. 29547/63 and 47019/63. Heading H2H. In a system for starting a D.C. welding arc by a high-frequency pulse generator 5, 6 a capacitor 8 assists by discharging into the gap when the pulse polarity is the same as that of supply 1. When the polarity is opposite, the pulse is effectively short-circuited through capacitor 8 and rectifier 10, and at the same time the capacitor is charged from supply 1 through non-inductive resistor 9. Ionization is continued by the discharge of a capacitor 4 until the arc current reaches a stable level. Resistor 9 and rectifier 10 may be replaced by several of these components in series, possibly with a capacitor across each pair to improve the voltage distribution. The rectifiers are preferably semi-conductor diodes of the avalanche type.
GB2954763A 1963-07-25 1963-07-25 Means for initiating electric arcs between spaced electrodes Expired GB1090404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2954763A GB1090404A (en) 1963-07-25 1963-07-25 Means for initiating electric arcs between spaced electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2954763A GB1090404A (en) 1963-07-25 1963-07-25 Means for initiating electric arcs between spaced electrodes

Publications (1)

Publication Number Publication Date
GB1090404A true GB1090404A (en) 1967-11-08

Family

ID=10293258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2954763A Expired GB1090404A (en) 1963-07-25 1963-07-25 Means for initiating electric arcs between spaced electrodes

Country Status (1)

Country Link
GB (1) GB1090404A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436021A4 (en) * 1988-03-24 1990-10-18 Komatsu Mfg Co Ltd Plasma-arc cutting machine and a method of controlling the same.
GB2320627A (en) * 1996-12-18 1998-06-24 Sansha Electric Mfg Co Ltd Arc welder or cutter with DC arc-initiation assisting circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436021A4 (en) * 1988-03-24 1990-10-18 Komatsu Mfg Co Ltd Plasma-arc cutting machine and a method of controlling the same.
EP0436021A1 (en) * 1988-03-24 1991-07-10 Kabushiki Kaisha Komatsu Seisakusho Plasma-arc cutting machine and a method of controlling the same
GB2320627A (en) * 1996-12-18 1998-06-24 Sansha Electric Mfg Co Ltd Arc welder or cutter with DC arc-initiation assisting circuit

Similar Documents

Publication Publication Date Title
US3849670A (en) Scr commutation circuit for current pulse generators
GB1272178A (en) Improvements in or relating to circuit arrangements for stabilising and igniting welding arcs
GB1112511A (en) Improvements in or relating to electric arc welding apparatus
US3056065A (en) Spark machining methods and apparatus
GB1513408A (en) Arrangement for stabilising or igniting a welding arc
GB1264538A (en)
GB1142206A (en) Improvements in or relating to power sources for electric arc stabilisation
GB1033017A (en) Improvements in and relating to electrical discharge erosion apparatus
GB1048997A (en) Improvements in or relating to control means for electrical apparatus
GB1117853A (en) Power supply and method for metal surfacing
GB1090404A (en) Means for initiating electric arcs between spaced electrodes
GB1241959A (en) Electric arc welding
GB1100888A (en) Arc starting system for welding
GB1423856A (en) Electric discharge machining circuit
GB1380556A (en) Ignition systems
GB1225256A (en)
GB1053502A (en)
GB1172957A (en) Improvements in or relating to Methods of and Devices for Stabilising and Igniting Welding and Cutting Arcs
GB970553A (en) Spectrochemical light sources
GB822010A (en) Improvements in or relating to electric supply arrangements
GB1057448A (en) Circuit arrangement for a no break generating set
US3576467A (en) High voltage spark generator from low voltage supply
GB1036565A (en) Improvements in or relating to electric supply arrangements
SU482872A1 (en) Broadband thyristor pulse generator
GB1161764A (en) Circuit with Triggerable Vacuum Gap Device