GB872726A - Apparatus for electric arc cutting - Google Patents

Apparatus for electric arc cutting

Info

Publication number
GB872726A
GB872726A GB2749756A GB2749756A GB872726A GB 872726 A GB872726 A GB 872726A GB 2749756 A GB2749756 A GB 2749756A GB 2749756 A GB2749756 A GB 2749756A GB 872726 A GB872726 A GB 872726A
Authority
GB
United Kingdom
Prior art keywords
electrode
passage
nozzle
shielding gas
high frequency
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
GB2749756A
Inventor
Robert Arthur Cresswell
James Ronald Bradshaw
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 GB2749756A priority Critical patent/GB872726A/en
Publication of GB872726A publication Critical patent/GB872726A/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
    • B23K9/013—Arc cutting, gouging, scarfing or desurfacing

Abstract

872,726. Arc torches. BRITISH OXYGEN CO. Ltd. Aug. 28, 1957 [Sept. 7, 1956], No. 27497/56. Class 39(3). [Also in Group XXII] An electric arc cutting device comprises a housing 8 having a shielding nozzle 1 with a replaceable insert 5 defining a passage 6 about a non-consumable electrode 7 supported within the housing with its tip extending into or through the nozzle, connections 12 for supplying a shielding gas to flow around the electrode and through the passage, and a secondary electrode 5 for subjecting the shielding gas to ionisation. The electrode 7 which may be of tungsten is carried by a support 11 made of an oxide or oxides of aluminium, zirconium, silicon or magnesium and having passage 12 for the shielding gas which may be argon, nitrogen or hydrogen. The nozzle 1 has a cooling chamber 2 and may be made of carbon, carborundum, metal, a ceramic material or of ceramic and metal; it has a replaceable insert 5 of electrographite which constitutes the secondary electrode. The electrode 7 and workpiece 14, Fig. 2, are connected to a direct or alternating current source 13 and the secondary electrode 5 is connected to a high frequency current source 15 such as a spark generator through a conductor 4 which is also a coolant discharge pipe. This high frequency source may be switched off when the cutting arc has been established.
GB2749756A 1956-09-07 1956-09-07 Apparatus for electric arc cutting Expired GB872726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2749756A GB872726A (en) 1956-09-07 1956-09-07 Apparatus for electric arc cutting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2749756A GB872726A (en) 1956-09-07 1956-09-07 Apparatus for electric arc cutting

Publications (1)

Publication Number Publication Date
GB872726A true GB872726A (en) 1961-07-12

Family

ID=10260545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2749756A Expired GB872726A (en) 1956-09-07 1956-09-07 Apparatus for electric arc cutting

Country Status (1)

Country Link
GB (1) GB872726A (en)

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