Controlled environment superplastic forming of metals

Details Controlled environment superplastic forming of metals Controlled environment superplastic forming of metals

B - Operations, Transporting

21

D

113/58

B21D 47/00 (2006.01) B21D 31/04 (2006.01)

Patent

CA 1057132

CONTROLLED ENVIRONMENT SUPERPLASTIC FORMING OF METALS ABSTRACT Metals such as titanium alloy blanks which are subject to contam- ination by air at elevated temperatures are precision formed into desired shapes in a controlled environment. The metal worksheet and a shaping member are located within an enclosure. An inert gas environment is provided in the enclosed area. The metal worksheet is heated to a suitable forming temperature and stretched substantially in excess of its original surface area under tensile stress from a fluid pressure loading and formed into the desired shape by interaction with the shaping member. Novel sealing arrangements for the enclosed area of the forming apparatus are provided.

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