| 摘要 |
PROBLEM TO BE SOLVED: To prevent physical or chemical damage to the final shape, where one of the two members is a stub member, by providing a collar having a face to come into contact with the stub member, and executing welding without imparting a substantial restraint to the external surface of the stub member. SOLUTION: A stub to use is provided with a thickness in the radial direction and a width, with the thickness in the radial direction less than three times the width or thinner than the width, with the stub and the collar each provided with an external surface in the radial direction, and with the external surfaces essentially on the same plane. The stub 42 extends from the front edge 33 to the rear edge 34, while its thickness 43 in the radial direction, i.e., the height, is uniform. The stub 42 is provided with an external surface 44 in the radial direction, with linear friction welding executed in this part. The collar 46, 47 is installed on the front edge 33 and the rear edge 34 of the stub 42, and is each provided with a partial band 48, 49 and a band base 50, 51.
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