GB1469318A - Arc welding torch - Google Patents

Arc welding torch

Info

Publication number
GB1469318A
GB1469318A GB2727674A GB2727674A GB1469318A GB 1469318 A GB1469318 A GB 1469318A GB 2727674 A GB2727674 A GB 2727674A GB 2727674 A GB2727674 A GB 2727674A GB 1469318 A GB1469318 A GB 1469318A
Authority
GB
United Kingdom
Prior art keywords
support
electrode
bore
valve
holder
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
GB2727674A
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.)
Foster Wheeler (London) Ltd
Original Assignee
Foster Wheeler (London) 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 Foster Wheeler (London) Ltd filed Critical Foster Wheeler (London) Ltd
Priority to GB2727674A priority Critical patent/GB1469318A/en
Publication of GB1469318A publication Critical patent/GB1469318A/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
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/10—Welded housings
    • F16K27/105—Welded housings for gate valves

Abstract

1469318 Welding by fusion FOSTER WHEELER POWER PRODUCTS Ltd 19 Sept 1975 [19 June 1974] 27276/74 Heading B3R A rotary, gas-shielded, non-consumable electrode, arc welding torch, for effecting a circumferential seal weld between a replacement valve seat 12 and a chest of a slide valve (10, Fig. 1, not shown), comprises a support 28 clampable within a valve bore 18, a further support 30 slidably splined, and lockable as by screws (not shown), on the support 28, and an annular holder 32 rotatable on the further support 30, by way of a worm and wheel 92, 90, and carrying a non-consumable electrode 34, e.g. tungsten, within a ceramic gas nozzle 70. The splined connection between the supports 28, 30 allows telescoping thereof, for introduction into the valve after removal of its slide, and fine positioning of the electrode/workpiece distance following rough positioning and clamping of the support 28 in the valve bore. Clamping of the support 28 is by garter-spring-returned shoes 50 radially outwardly cammed into contact with the bore 18 by energization of an hydraulic piston 48. The electrode is energized via a brush 94 carried by the support 30 and bearing against the holder 32 which is conductive. Inert shielding gas and electrode cooling water are circulated via ducts and grooves in the support 30 and mating conduits in the holder 32, sealing 0-rings being provided in the bore of the latter.
GB2727674A 1975-09-19 1975-09-19 Arc welding torch Expired GB1469318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2727674A GB1469318A (en) 1975-09-19 1975-09-19 Arc welding torch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2727674A GB1469318A (en) 1975-09-19 1975-09-19 Arc welding torch

Publications (1)

Publication Number Publication Date
GB1469318A true GB1469318A (en) 1977-04-06

Family

ID=10256946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2727674A Expired GB1469318A (en) 1975-09-19 1975-09-19 Arc welding torch

Country Status (1)

Country Link
GB (1) GB1469318A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102990239A (en) * 2012-12-26 2013-03-27 南通三九焊接机器制造有限公司 Valve inner girth welding method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102990239A (en) * 2012-12-26 2013-03-27 南通三九焊接机器制造有限公司 Valve inner girth welding method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee