| 摘要 |
PROBLEM TO BE SOLVED: To obtain high heat exchange efficiency by inserting a rotating probe in each boundary surface of plurality of laminated metallic plate-like members to achieve the joining in a friction-stirring manner, and increasing the interval of non-joined parts of the metallic plate-like members to form a fin part. SOLUTION: The probe of a welding equipment is inserted in a center part in the width direction of one end part of laminated metallic plate-like members 2. The probe is inserted until a probe tip reaches a lowest layer from the surface of the metallic plate-like members 2. The probe is moved in the welding direction by turning it in this condition. The metallic plate-like members 2 are plasticizing-softened by the friction heat to be generated through the rotation of the probe and the sliding contact with each metallic plate-like member 2, and the joined part 10 is formed while a probe passing groove is filled with the softened stirring part as the probe is moved. A non-joined part 20 is divided with the prescribed intervals, and bent in the thickness direction to form a fin part 21 and the heat exchanger 1 is obtained. The heat exchanger can be manufactured at an extremely low cost by using the metallic plate-like members 2 easy to manufacture. |
