| 摘要 |
PROBLEM TO BE SOLVED: To provide friction-welding connection with protection against corrosion and other chemical influences. SOLUTION: The fastening element (1) is provided with a friction-welding surface for performing friction-welding to a flat component, and the friction-welding is performed via rotational force acting on the fastening element and pressing force against the component. The friction-welding surface (4) is bordered by a circular coaxial friction-soldering surface (5), and the friction-welding surface projects axially with respect to the friction-soldering surface by a length essentially containing only the material necessary for friction-welding. COPYRIGHT: (C)2007,JPO&INPIT
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