Thermal stir welding apparatus

Details Thermal stir welding apparatus Thermal stir welding apparatus

2011-07-19

2011-07-19

Stoner, Kiley (Department: 1735)

Metal fusion bonding

Process

Plural heat applying

C228S002100, C228S002300, C228S008000, C228S112100, C228S232000

Reexamination Certificate

active

07980449

ABSTRACT:
A welding method and apparatus are provided for forming a weld joint between first and second elements of a workpiece. The method includes heating the first and second elements to form an interface of material in a plasticized or melted state interface between the elements. The interface material is then allowed to cool to a plasticized state if previously in a melted state. The interface material, while in the plasticized state, is then mixed, for example, using a grinding/extruding process, to remove any dendritic-type weld microstructures introduced into the interface material during the heating process.

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C.J. Dawes, D.N. Almond and E.R. Watts, “Development of the New Friction Stir Technique for :Welding Aluminium—Phase I,” Final Report, TWI Abington Hall, Abington (Cambridge CB1 6AL, United Kingdom), (Jul. 1, 1994).
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