“A process for preparation of improved superplastic forming of hemispherical domes and deep cups from superplastic.”
Application 237/del/1997 published 2006-07-14, filed 1997-01-30
A process for preparation of improved superplastic forming of hemispherical domes and deep cups from superplastic alloy” A process for preparation of improved superplastic forming of hemispherical domes and deep cups from superplastic alloy sheets of metal such as titanium, aluminium, magnesium, zirconium, iron comprising the steps of rolling said alloy metal sheet, clamping the rolled metal alloy sheet to be superplastically formed between a flat die and a shaped die, heating the whole assembly in a furnance to the forming temperature in the range of 0.4 to 0.6 Tm where Tm is the melting point in absolute scale of the metal sheet to be super-plastically formed, blowing a gas such as argon through a tube at a pressure for a pressure-time profile determined as herein described.
Applicant
The chief Controller, Research & Development Organisation
B-341, Sena Bhawan, DHQ P.O. New Delhi – 110 011..
Inventor
Dr. Abhijit Dutta, Total No. of Pages of Drawing : 01
International Info
Classification: B 21 D 26/02