GB786608A - Improvements in or relating to composite sheet metal - Google Patents

Improvements in or relating to composite sheet metal

Info

Publication number
GB786608A
GB786608A GB3178/56A GB317856A GB786608A GB 786608 A GB786608 A GB 786608A GB 3178/56 A GB3178/56 A GB 3178/56A GB 317856 A GB317856 A GB 317856A GB 786608 A GB786608 A GB 786608A
Authority
GB
United Kingdom
Prior art keywords
pattern
composite sheet
zones
sheets
sheet
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
GB3178/56A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB786608A publication Critical patent/GB786608A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/18—Zonal welding by interposing weld-preventing substances between zones not to be welded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

786,608. Making composite sheets for heat exchangers; stamping; jointing by rolling. GENERAL MOTORS CORPORATION. Feb. 1, 1956 [Feb. 25, 1955], No. 3178/56. Classes 83 (2) and 83 (4). A method of making a composite sheet for a heat exchanger comprises roll bonding a pair of superimposed metal sheets 10 and 12 between which are a first pattern 14 of stop-weld material, adapted on subsequent dilation to form a system of passages, and a second separate pattern 18 of stop-weld material, situated between the first pattern and an edge of the superimposed sheets; dilating the second pattern on the composite sheet thus formed to form bulged portions corresponding to the position of specific zones of said first pattern; and marking the composite sheet to locate said zones. The stopweld material, e.g. a mixture of graphite and water glass, is applied to the lower sheet 12 and the second pattern 18 has projections 20 located immediately opposite the midpoints of the unstopped areas 16. The sheets 10 and 12 are then assembled and passed between heated rolls to form the composite sheet 21. In order to locate accurately the zones between the welded areas 16 the transverse edge of the composite sheet is prised open at one of the two positions at which the pattern 18 meets that edge and high pressure fluid is introduced to dilate the second pattern to form passages 18a and short locating side channels 20a which by drawing a line 22 between the channels locate the mid zones of the welded areas. Finally, the passages 18a and side channels 20a are cut from the composite sheet and the sheet is bent to serpentine shape, Fig. 5, so that each curved portion includes the zones between the welded areas 16 and the pattern 14 is dilated on a die 26 to form a refrigerator evaporator.
GB3178/56A 1955-02-25 1956-02-01 Improvements in or relating to composite sheet metal Expired GB786608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US786608XA 1955-02-25 1955-02-25

Publications (1)

Publication Number Publication Date
GB786608A true GB786608A (en) 1957-11-20

Family

ID=22145469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3178/56A Expired GB786608A (en) 1955-02-25 1956-02-01 Improvements in or relating to composite sheet metal

Country Status (1)

Country Link
GB (1) GB786608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017953A (en) * 1974-04-11 1977-04-19 Ciba-Geigy Corporation Heat exchangers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017953A (en) * 1974-04-11 1977-04-19 Ciba-Geigy Corporation Heat exchangers

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