Method of manufacturing an article, a method of diffusion bondin

Details Method of manufacturing an article, a method of diffusion bondin Method of manufacturing an article, a method of diffusion bondin

1992-08-27

1993-07-13

Heinrich, Samuel M.

Metal fusion bonding

Process

With shaping

228118, 228193, B23K 3100

Patent

active

052265781

ABSTRACT:
A stack of titanium sheets are placed between a pair of pressurisable chambers in a vacuum chamber. One of the mating surfaces of each pair of mating surfaces has had a stop off material applied in a desired pattern to prevent diffusion bonding. A pump evacuates the vacuum chamber and heaters heat the stack to evaporate volatile binders from the stop off. When all the binder has been removed the stack is heated and the pressure in the pressurisable chambers is increased to cause a pair of resilient members to apply pressure on the stack to diffusion bond the sheets together. The volatile binder is removed quickly and oxidation of the titanium is prevented during baking out of the binder. The integral structure is then heated and internally pressurised to superplastically form one of the sheets to produce an article of predetermined shape. No welding of the sheets before bonding is required.

REFERENCES:
patent: 5024368 (1991-06-01), Bottomley et al.
patent: 5069383 (1991-12-01), Cooper et al.
patent: 5118026 (1992-06-01), Stacher

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