Molding tool

Details Molding tool Molding tool

2006-12-19

2008-10-28

Gupta, Yogendra (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Means forming a mold; or flask, per se

Reexamination Certificate

active

07442023

ABSTRACT:
A die comprises metal-rich sections which form an inner wall and an outer wall of the die, respectively. Gradient sections are disposed adjacent to the metal-rich sections, respectively. Further, a ceramics-rich section is disposed between the gradient sections. A punch comprises an inner ceramics-rich section, a gradient section, and an outer metal-rich section. In the die, the composition ratio of metal gradually decreases from the metal-rich sections to the ceramics-rich section. Similarly, in the punch, the composition ratio of the metal gradually decreases from the metal-rich section to the ceramics-rich section.

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