Superplasticity forming mould and mould insert

Details Superplasticity forming mould and mould insert Superplasticity forming mould and mould insert

2005-08-30

2005-08-30

Jones, David (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

Using fixed die

C072S063000, C072S342940

Reexamination Certificate

active

06935150

ABSTRACT:
The mould (10) includes at least one part (20), intended to be in contact with the component (12) being moulded, made from sintered vitreous silica. According to the process, said component (12) is formed by the superplastic forming in the mould (10) of a plate (18) made of a material capable of undergoing superplastic deformation, for example titanium or titanium alloy, aluminium or aluminium alloy, or any material exhibiting superplastic properties. Preferably, a barrier is formed between at least a part of the contact surfaces of the mould (10) and the component (12) being moulded, for example by coating with boron nitride, at least partially, the contact surfaces of the mould (10) and the component (12) being moulded, before placing the plate (18) in the mould (10), and/or by injecting an inert gas, notably helium or argon, between the contact surfaces of the mould (10) and the component (12) being moulded.

REFERENCES:
patent: 5214949 (1993-06-01), Cadwell
patent: 5571436 (1996-11-01), Gregg et al.
patent: 5638724 (1997-06-01), Sanders
patent: 5661992 (1997-09-01), Sanders
patent: 5728309 (1998-03-01), Matsen et al.
patent: 6553804 (2003-04-01), Convert
patent: 6613164 (2003-09-01), Dykstra

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