MOLDING DIE FOR FUEL CELL SEPARATOR, METHOD OF MANUFACTURING FUEL CELL SEPARATOR, AND FUEL CELL SEPARATOR

WIPO Patent Application WO/2006/126638

A1

A molding die for a fuel cell separator, a method of manufacturing the fuel cell separator, and the fuel cell separator. The fuel cell separator capable of providing high quality and high productivity with less deformation, warpage, and cracking at its removal from the die by keeping constant a density balance between a gas flow passage groove part area and a surrounding part area on the surface of the separator. When powder-like material is filled in a cavity (50) formed between upper and lower dies (41) and (21) divided into upper and lower inner dies (42) and (22) corresponding to a flow passage groove part (2) and upper and lower outer dies (45) and (25) corresponding to surrounding parts (4), the (upper) lower inner dies ((42))(22) is positioned at a prescribed height (below) above the (upper) lower outer die ((45))(25) so that the compression ratio of the flow passage groove part (2) is equal to the compression ratio of the surrounding part (4). After the compression molding is completed, the upper and lower outer dies (45) and (25) are projected from the upper and lower inner dies (42) and (22) so that the flow passage groove part (2) can be released in preference to the surrounding parts (4) on both the front and rear surfaces when the die is opened for taking out a molded product.

SUZUKI MASAMI
ARAMAKI HIROMASA

PCT/JP2006/310455

November 30, 2006

May 25, 2006

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SEIKO GIKEN KK (JP)
SUZUKI MASAMI
ARAMAKI HIROMASA

H01M8/02; B28B3/08; C01B31/04; H01M8/10

JP2004338269A	2004-12-02
JP2004071334A	2004-03-04
JP2001143722A	2001-05-25
JP2005166463A	2005-06-23

Miyoshi, Hidekazu (2-8 Toranomon 1-chom, Minato-ku Tokyo 01, JP)

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