Method and apparatus for forming a titanium or titanium alloy sh

Details Method and apparatus for forming a titanium or titanium alloy sh Method and apparatus for forming a titanium or titanium alloy sh

1989-07-31

1992-05-19

Jones, David

Metal deforming

By shot-blasting

723425, 72364, 723792, 72700, 72709, B21B 4502, B21D 3716

Patent

active

051136813

ABSTRACT:
A process and apparatus for forming a sheet element with a contoured surface from a plane titanium or titanium alloy sheet by hot deep-drawing in a press. The plane sheet is preheated to a temperature of at least 730.degree. C. and transferred to a non-preheated deep drawing tool. The deep-drawing tool is placed in a press for a period of time sufficient for the temperature of the element to be at least 700.degree. C. at the end of the deep-drawing operation. The deep drawn element is transferred to a calibration tool and heated to at least 650.degree. C. for a sufficient time to assume a final shape and allowed to cool to room temperature.

REFERENCES:
patent: 3974673 (1976-08-01), Fosness
patent: 4474044 (1984-10-01), Leistner et al.
patent: 4658362 (1987-04-01), Bhatt
IBM Journal, Mar. 1965, "Sheet Thermoforming of a Superplastic Alloy", vol. 9, No. 2, p. 134.

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