Patent ID: 7757927

Claim:
A method of joining two structural components to each other, said method comprising the following steps: a) providing each of said two structural components with a joining surface thereby forming two joining surfaces, b) forming at least one groove ( 18 ) in at least a first structural component of said two structural components, said at least one groove being positioned next to a respective said joining surface of said first structural component, said at least one groove extending around a perimeter of said first structural component next to said respective joining surface so that said groove reduces a cross-sectional area of said first structural component on a section plane parallel to said respective joining surface, wherein said groove is a radially outwardly open groove in a radially outwardly facing perimeter surface of said first structural component, and wherein said groove is displaced next to said respective joining surface so as to form a joining lip that tapers radially outwardly to a joining lip edge running around said perimeter of said first structural component adjoining said respective joining surface such that said joining lip edge lies on and extends along a joining surface plane on which said respective joining surface lies, and wherein, relative to said cross-sectional area of said first structural component in said groove, said joining lip has a larger cross-sectional area on said joining surface plane, c) contacting and aligning said two joining surfaces with each other, and d) joining said two structural components to each other at said two joining surfaces by applying a an oscillating linear friction welding procedure to said two structural components along said two joining surfaces, comprising moving at least one of said structural components relative to another of said structural components in a friction motion direction along said joining surface plane.