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GB1262821A - Method for producing tube in metal sheets - Google Patents

Method for producing tube in metal sheets

Info

Publication number
GB1262821A
GB1262821A GB1334770A GB1334770A GB1262821A GB 1262821 A GB1262821 A GB 1262821A GB 1334770 A GB1334770 A GB 1334770A GB 1334770 A GB1334770 A GB 1334770A GB 1262821 A GB1262821 A GB 1262821A
Authority
GB
United Kingdom
Prior art keywords
zinc
weld
stop
aluminium
roll
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
GB1334770A
Inventor
Osamu Kamiya
Yuichiro Asano
Tomiyoshi Kanai
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.)
Altemira Co Ltd
Original Assignee
Showa Aluminum Corp
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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to GB1334770A priority Critical patent/GB1262821A/en
Publication of GB1262821A publication Critical patent/GB1262821A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/224—Anti-weld compositions; Braze stop-off compositions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0316—Assemblies of conduits in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)

Abstract

1,262,821. Making tubes; heat exchangers; jointing by rolling. SHOWA ALUMINIUM K.K. 19 March, 1970, No. 13347/70. Headings B3A and B3M. A flat tube 7 is made by roll bonding two aluminium sheets with a stop-weld material between them, the stop-weld material comprising zinc or zinc alloy (at least 90% Zn) as a paste with a liquid (preferably water or alcohol), heating the sheets with stop-weld between them either during or after roll-bonding and opening up the tube passage 5 by means of a pressurized fluid, preferably water. The zinc forms an alloy layer 6 with the aluminium to render the inside of the passage 5 corrosion-resistant. The zinc may be compounded with a known stop-weld in a ratio 10 to 90% zinc or zinc alloy, 90 to 10% known stop-weld. A zinc-graphite/water-glass mixture is preferred in which the ratio of zinc to graphite is preferably about 3 to 1. In a preferred method an aluminium sheet is coated with a first layer of known stop-weld, a second layer of zinc or zinc alloy paste and a third layer of the known stop-weld material, then a second sheet of aluminium is roll-bonded to the first. Bonding may be by hot rolling or cold rolling with a reduction between 70 and 90%, preferably 75%. Hot rolling carried out at 370‹ to 560‹ C. is preferably followed by cold rolling, the reductions being, in an example, 63% and 43%, respectively. The roll-bonded sheet may be annealed at 200‹ to 600‹ C. and preferably for 2 hours at 500‹ or 550‹ C.
GB1334770A 1970-03-19 1970-03-19 Method for producing tube in metal sheets Expired GB1262821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1334770A GB1262821A (en) 1970-03-19 1970-03-19 Method for producing tube in metal sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1334770A GB1262821A (en) 1970-03-19 1970-03-19 Method for producing tube in metal sheets

Publications (1)

Publication Number Publication Date
GB1262821A true GB1262821A (en) 1972-02-09

Family

ID=10021307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1334770A Expired GB1262821A (en) 1970-03-19 1970-03-19 Method for producing tube in metal sheets

Country Status (1)

Country Link
GB (1) GB1262821A (en)

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