| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for caulking a heat exchanger wherein the prescribed shape of caulking can be surely obtained. SOLUTION: The method is a caulking method for a heat exchanger, wherein a tank 20 is caulked with a core plate 30 by bending the side part 31 of the plate 30 after interposing a sealing member 40 between the tank 20 and the core plate 30. The caulking method comprises: a pressing process wherein the tank 20 is pressed to the side of the core plate 30 so that a required compression allowance is secured on the sealing member 40; a primary bending process wherein the side face part 31 is bent into a half-finished state of the prescribed shape of caulking by applying a pressure on the surface of the side face part 31 from the direction perpendicular thereto; and a secondary bending process wherein the side face part 31 bent into the half-finished shape is bent into the prescribed shape of caulking. COPYRIGHT: (C)2004,JPO
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