GB1370442A - Welding processes - Google Patents

Welding processes

Info

Publication number
GB1370442A
GB1370442A GB4236371A GB4236371A GB1370442A GB 1370442 A GB1370442 A GB 1370442A GB 4236371 A GB4236371 A GB 4236371A GB 4236371 A GB4236371 A GB 4236371A GB 1370442 A GB1370442 A GB 1370442A
Authority
GB
United Kingdom
Prior art keywords
chromium
insert
tubes
iron
manganese
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
GB4236371A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB4236371A priority Critical patent/GB1370442A/en
Publication of GB1370442A publication Critical patent/GB1370442A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/04Electron-beam welding or cutting for welding annular seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

1370442 Welding by fusion GENERAL ELECTRIC CO Ltd 21 Nov 1972 [10 Sept 1971] 42363/71 Heading B3R In the electron-beam welding together of two parts by a glow-discharge cold-cathode gun, an insert is placed between and in contact with said parts prior to welding. As shown, two tubes 1 are welded together end-to-end, with the interposition of an insert 4 by a gun 8. The tubes extending into a gun enclosure 2 through means 3 each of which comprises an inflatable seal 6 and two sets of three equi-spaced tube clamping and centering pins 5. The tube bores are sealed by inflatable bulbs (not shown) which together with the seals 6 are of heat-resistant rubber. The enclosure is, in use, evacuated through a port 7 and argon is introduced through a bleed port 21 to establish an argon atmosphere at approximately 0À1 Torr. The gun 8 comprises an annular, concave innersurfaced, cathode 9 supported by rods 11 sealed by electrically insulating glass seals 12. Coaxially within the cathode there is disposed a curved cross-section anode 13 which has a circular aperture 14 and is rotatable, e.g. at 1 r.p.m., via bevel gears 18, 17, to rotate a beam 22 about the tube joint. The tube axis may be vertical or, as shown, horizontal. In a first example, tubes 1 of 2 inches O.D., 1/8 inch wall thickness, and both of chromium-molybdenum steel are welded together using an insert 4 comprising a ring of 0À188 inch diameter wire flattened to 0À063 inch axial thickness and of an iron alloy consisting of, in weight per cent: Carbon 0À1 max. Manganese 0À75-1À5 Silicon 0À3-0À6 Titanium 0À07-0À10 Chromium 0À75-1À25 Molybdenum 0À4-0À65 Iron balance The insert dioxidants take up oxygen release from the tubes. In a second example, one of the two tubes is of mild steel and the other is of stainless steel comprising, in weight per cent: Carbon 0À08 Silicon 0À80 Manganese 0À80 Chromium 18À0 Nickel 9À3 Titanium 0À5 Iron balance and the insert is either of an iron alloy consisting of, in weight per cent: Carbon 0À1 Silicon 1À3 Manganese 0À8 Nickel 21À5 Chromium 23À5 Iron balance or of a nickel alloy consisting of, in weight per cent: Chromium 16À0 Iron 8À1 Manganese 0À2 Silicon 0À2 Carbon 0À1 Nickel balance.
GB4236371A 1972-11-21 1972-11-21 Welding processes Expired GB1370442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4236371A GB1370442A (en) 1972-11-21 1972-11-21 Welding processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4236371A GB1370442A (en) 1972-11-21 1972-11-21 Welding processes

Publications (1)

Publication Number Publication Date
GB1370442A true GB1370442A (en) 1974-10-16

Family

ID=10424088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4236371A Expired GB1370442A (en) 1972-11-21 1972-11-21 Welding processes

Country Status (1)

Country Link
GB (1) GB1370442A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007351A1 (en) * 1995-08-21 1997-02-27 The Welding Institute Seal assembly
DE19527048C2 (en) * 1995-07-25 2001-06-28 Fraunhofer Ges Forschung Device for carrying out electron beam technological processes
CN103084725A (en) * 2012-12-24 2013-05-08 成都国光电气股份有限公司 Helix traveling-wave tube slow wave system centering vacuum electron beam welding craft

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527048C2 (en) * 1995-07-25 2001-06-28 Fraunhofer Ges Forschung Device for carrying out electron beam technological processes
WO1997007351A1 (en) * 1995-08-21 1997-02-27 The Welding Institute Seal assembly
CN103084725A (en) * 2012-12-24 2013-05-08 成都国光电气股份有限公司 Helix traveling-wave tube slow wave system centering vacuum electron beam welding craft
CN103084725B (en) * 2012-12-24 2014-11-19 成都国光电气股份有限公司 Helix traveling-wave tube slow wave system centering vacuum electron beam welding craft

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Legal Events

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