GB786608A - Improvements in or relating to composite sheet metal - Google Patents
Improvements in or relating to composite sheet metalInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4017953A (en) * | 1974-04-11 | 1977-04-19 | Ciba-Geigy Corporation | Heat exchangers |
-
1956
- 1956-02-01 GB GB3178/56A patent/GB786608A/en not_active Expired
Cited By (1)
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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