Metal fusion bonding – Process – With shaping
Patent
1994-02-25
1995-05-09
Ramsey, Kenneth J.
Metal fusion bonding
Process
With shaping
228142, 2281736, 228265, B23K 2802
Patent
active
054132711
ABSTRACT:
A method of superplastically forming a metal article and an article formed by such a method are provided. The method includes the steps of placing sheet material including at least one sheet of superplastically formable material (2, 3) and a sheet of reinforcing material (10) adjacent a said sheet (2) of superplastically formable material within a mold tool having a male former (18) protruding from the tool surface positioned to contact the sheet of reinforcing material during forming and causing the at least one superplastically formable sheet (2, 3) adjacent the reinforcing sheet (10) to be superplastically formed into conformation with the surface (28) of the mold tool and simultaneously to urge the sheet of reinforcing material (10) against the male former (18). The method is characterised by thinning at least one selected area (14, 15, 16, 17) of the sheet of reinforcing material (10), the at least one area being adapted to form around at least one region of high curvature (19, 20, 21, 22) of the male former (18) whereby to promote controlled folding of the reinforcing sheet (10) about the former.
REFERENCES:
patent: 4460657 (1984-07-01), Elrod et al.
patent: 4644626 (1987-02-01), Barnes et al.
patent: 4984732 (1991-01-01), Hudson et al.
patent: 4989774 (1991-02-01), Stephen et al.
patent: 5277357 (1994-01-01), Miyamoto et al.
Irwin David
Mansbridge Martin H.
British Aerospace Public Limited Company
Ramsey Kenneth J.
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