Method of locally heating a part to reduce strength and...

Details Method of locally heating a part to reduce strength and... Method of locally heating a part to reduce strength and...

2005-07-26

2005-07-26

Wyszomierski, George (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S593000, C148S627000, C148S695000, C148S714000

Reexamination Certificate

active

06921444

ABSTRACT:
A method of performing manufacturing operations on a workpiece made of a high strength alloy is disclosed in which a local area of a workpiece is heated to micro-structurally soften the local area. The local area of the workpiece becomes softened and more ductile. A manufacturing operation involving deformation of the heat softened area is performed with the metal in the heat softened region being more ductile and having less strength than the surrounding portions thereof. Manufacturing operations may include riveting, clinching, hydro-forming, and magnetic pulse joining.

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patent: 6605370 (2003-08-01), Wittebrood et al.
patent: 6825442 (2004-11-01), Schroth et al.

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