Method of manufacturing golf head

Metal fusion bonding – Process – Using bond inhibiting separating material

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Details

228157, 273167H, B23K 2318

Patent

active

052286150

ABSTRACT:
This invention relates to a process of making golf club head, comprising the steps of preparing a sectional forming mold having a cavity which duplicates the shape of the head to be produced; preparing a coupled body, having a channel within, consisting of metal sheets made of a superplastic material; clamping the coupled body in the forming mold, heating the coupled body to a range of superplastic forming temperatures and applying fluid pressure to the sheets through the channel opening to force the sheets to conform to the shape of the head by superplastic forming; and trimming the formed product to shape to obtain the golf club head. The invented process is able to produce heads of fine uniform microstructure because the process does not involve conventional casting process, providing freedom from damaging porosities and segregation. Joining of the head portions, having outstanding mechanical properties and appearance, can be produced by a variety of means including thermal bonding, double processing and the selective use of releasing material. The process permits making of the head having thick- and thin-walled sections in one superplastic forming process.

REFERENCES:
patent: 3863932 (1975-02-01), Lezatte
patent: 3895436 (1975-07-01), Summers
patent: 4220276 (1980-09-01), Weisert
patent: 4575447 (1986-03-01), Hariguchi
patent: 4800639 (1989-01-01), Frey
patent: 5028049 (1991-07-01), McKeighen

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