Extruded frame member for use in friction stir welding

Details Extruded frame member for use in friction stir welding Extruded frame member for use in friction stir welding

2005-08-30

2005-08-30

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

C428S167000, C428S169000, C428S172000, C052S589100, C052S592400, C052S749100, C052S749100, C228S112100, C228S002100, C403S270000

Reexamination Certificate

active

06936332

ABSTRACT:
The friction stir welding technique disclosed avoids occurrence of a dent in adjoining region extending to a level beneath the joined surfaces. At end portions of the frame members to be joined, thickened parts, which project toward the rotary body joining tool, are provided. The Two adjoining thickened parts form a trapezoid shape. The rotary body joining tool has a small-diameter tip portion and a larger diameter portion, and is inserted in the thickened parts. When the rotary body joining tool has been inserted small-diameter tip end first to a level where the larger diameter portion of the rotary body joining tool overlaps the thickened part, the rotary body is rotated and moved along the joining region. Even when a gap exists between two thickened parts, a desirable joining can be carried out. After the joining, the remaining parts of the thickened parts can be machined to form a smooth surface.

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