| 摘要 |
A friction welding process comprises providing a first workpiece (10) having a first weld surface (16), and a second workpiece (12) having a second weld surface (18). The first and second workpieces (10, 12) can be welded together at the first and second weld surfaces (16, 18). The workpieces (10, 12) are arranged in engagement with each other at the weld surfaces (16, 18). Relative oscillatory motion is affected to the workpieces (10, 12) such that at least one weld surface moves across the other, thereby raising the temperature at the weld surfaces (16, 18) to create a weld interface. The relative oscillatory motion is ceased and the weld surfaces (16, 18) are allowed to cool to weld the first and second workpieces (10, 12) together at the interface. The first workpiece (10) has an outwardly extending portion (15), and the first weld surface (16) is provided on the outwardly extending portion (15). The outwardly extending portion (15) includes an apex region (14), which engages the second weld surface (18). A side face (20) extends from one side of the apex region (14) to provide a gap between the side face (20) and the second weld surface (18). The aforementioned gap being of sufficient size to allow weld flash material formed during said oscillatory motion to pass from the weld interface through said gap. <IMAGE>
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