Superplastic forming of metals at temperatures greater than 1000

Details Superplastic forming of metals at temperatures greater than 1000 Superplastic forming of metals at temperatures greater than 1000

1992-05-08

1994-01-11

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72709, B21D 2602

Patent

active

052770451

ABSTRACT:
A method and apparatus for effecting superplastic forming of metal workpieces at temperatures greater than 1000.degree. C., wherein both oxidation and creep deformation of the tooling are minimized. The process is achieved by heating forming surfaces of ceramic forming dies to temperatures in excess of 1000.degree. C., and using metal housings to impart high loading conditions to seal the workpiece within a chamber for superplastic forming. More specifically, the metal housings are used not only for load bearing purposes, but also for creating an evacuated chamber within which superplastic forming can take place. The ceramic dies, on the other hand, are positioned on opposing sides of the workpiece region to be superplastically formed, and are insulated from, while being contained within, the metallic dies. Once the region of the workpieces to be superplastically formed has attained the desired temperature, expansion gases are introduced into the workpieces region via appropriate means to facilitate superplastic expansion of the workpiece within the chamber formed between the metallic housings.

REFERENCES:
patent: 4354369 (1982-10-01), Hamilton
patent: 4420958 (1983-12-01), Schulz et al.
patent: 4474044 (1984-10-01), Leistner et al.
patent: 4901552 (1990-02-01), Ginty et al.
patent: 4951491 (1990-08-01), Lorenz
patent: 4984348 (1991-01-01), Cadwell

Affiliated with

Also associated with

Rating

Superplastic forming of metals at temperatures greater than 1000 does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Superplastic forming of metals at temperatures greater than 1000, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superplastic forming of metals at temperatures greater than 1000 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1623905