The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 1999
Filed:
Mar. 17, 1997
Abstract
The present invention provides a die for superplastic forming of titanium-based alloy with high-workability, which is inexpensive and easy to handle, and has detailed shape-reproducibility and no reactivity with titanium-based alloy to be processed, and has excellent accordance with it in a thermal expansion coefficient. This invention relates to a die for superplastic forming of titanium-based alloy characterized by comprising quartz, cristobalite and calcium silicate. The above die for superplastic forming of titanium-based alloy is produced by kneading a mixed powder of quartz and cristobalite, together with a binder containing a plaster additive of less than 30 weight % based on the total amount with water, forming the mixture, drying the formed product and sintering it in the atmosphere to convert the plaster additive into calcium silicate.