Die for superplastic forming of titanium-based alloy

Details Die for superplastic forming of titanium-based alloy Die for superplastic forming of titanium-based alloy

1997-03-17

1999-04-27

Jones, David

Metal tools and implements, making

Blank or process

Die

72 60, 72709, B21K 520

Patent

active

058967842

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.

REFERENCES:
patent: 4824373 (1989-04-01), Okada et al.
patent: 5214949 (1993-06-01), Cadwell
patent: 5467626 (1995-11-01), Sanders
patent: 5638724 (1997-06-01), Sanders
JACT News, No. 459, pp. 21-28, Mar. 20, 1995, K. Sato, et al., "Casting Technology of Titanium".
Reports of the Government Industrial Research Institute, vol. 39, Nos. 7-8, pp. 309-317, M. Kato, et al., "On the Dental Application of Titanium Based Alloy (Part 2) Ceramic Die For Superplastic Forming".

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