Verbesserte Formtechnik für superplastische Formung

Technique de formage améliorée pour le formage superplastique

Advanced forming techniques for superplastic forming


This application describes a method for superplastic forming (SPF) of metallic parts in which a cutout is formed in the blank from which the parts will be formed, and a secondary sheet is located between the blank and the pressurized gas. The cutout area of the blank becomes stretched so that there is minimal thinning in the area near the periphery of the cutout(s) in the blank, the secondary sheet is required to carry the gas pressure and to form the parts.




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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    US-4748837-AJune 07, 1988Hitachi, Ltd.Method of forming spherical shells
    US-4984348-AJanuary 15, 1991Rohr Industries, Inc.Superplastic drape forming
    US-5419170-AMay 30, 1995The Boeing CompanyGas control for superplastic forming

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    Publication numberPublication dateAssigneeTitle