GB1434534A - Brazing a tubular member into an aperture - Google Patents

Brazing a tubular member into an aperture

Info

Publication number
GB1434534A
GB1434534A GB2642272A GB2642272A GB1434534A GB 1434534 A GB1434534 A GB 1434534A GB 2642272 A GB2642272 A GB 2642272A GB 2642272 A GB2642272 A GB 2642272A GB 1434534 A GB1434534 A GB 1434534A
Authority
GB
United Kingdom
Prior art keywords
tube
aperture
crenellations
brazing
hole
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
GB2642272A
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB2642272A priority Critical patent/GB1434534A/en
Publication of GB1434534A publication Critical patent/GB1434534A/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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

1434534 Brazing UNITED KINGDOM ATOMIC ENERGY AUTHORITY 23 Aug 1973 [6 June 1972] 26422/72 Heading B3R In making a peripheral joint between a tube 4 and the wall of an aperture in a second member 1, crenellations are formed in the outer surface of the tube by knurling and the rim of the aperture is chamfered, the tube is fitted into the aperture and its knurled region is expanded into contact with the wall of the aperture without completely removing the crenellations, a ring of braze metal is located in the recess and in a vacuum furnace the assembly is heated to effect brazing. In an embodiment a heat exchanger tube plate 1 is provided with a chamfered hole 2, 3 and a tube 4 is provided with its crenellations by running a knurling tool around the tube while the tube is supported on a mandrel. The tube 4 is inserted into the hole so that the crenellations engage the hole and a tube expander lightly expands the tube to substantially close the gaps between the ribs. With a ring of brazing alloy 9, e.g. containing palladium, positioned in the chamfer the assembly is placed in a vacuum furnace; which is flushed with hydrogen, to melt the brazing alloy. A number of tubes may be simultaneously brazed to apertures in a tube plate.
GB2642272A 1972-06-06 1972-06-06 Brazing a tubular member into an aperture Expired GB1434534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2642272A GB1434534A (en) 1972-06-06 1972-06-06 Brazing a tubular member into an aperture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2642272A GB1434534A (en) 1972-06-06 1972-06-06 Brazing a tubular member into an aperture

Publications (1)

Publication Number Publication Date
GB1434534A true GB1434534A (en) 1976-05-05

Family

ID=10243393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2642272A Expired GB1434534A (en) 1972-06-06 1972-06-06 Brazing a tubular member into an aperture

Country Status (1)

Country Link
GB (1) GB1434534A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326662A (en) * 1980-09-02 1982-04-27 Aluminum Company Of America Process of ultrasonically soldering drawn aluminum tubing products
GB2134430A (en) * 1983-01-28 1984-08-15 Btr Plc Method of securing and/or sealing an element relative to a support
WO1994016855A1 (en) * 1993-01-25 1994-08-04 Micro Motion, Inc. Method of brazing
US6373024B1 (en) * 1999-02-17 2002-04-16 Pacesetter, Inc. Laser-welded joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326662A (en) * 1980-09-02 1982-04-27 Aluminum Company Of America Process of ultrasonically soldering drawn aluminum tubing products
GB2134430A (en) * 1983-01-28 1984-08-15 Btr Plc Method of securing and/or sealing an element relative to a support
WO1994016855A1 (en) * 1993-01-25 1994-08-04 Micro Motion, Inc. Method of brazing
US6373024B1 (en) * 1999-02-17 2002-04-16 Pacesetter, Inc. Laser-welded joint

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee