Patent ID: 7138206
Filing Date: 2006-11-21
Classification: B29C,B29K,B29L,H01M,Y02E,Y02P

Abstract:
1. A fuel cell separator manufacturing method wherein a preform is molded from a knead of carbon and a thermosetting resin and said preform is used to form cooling water passages between adjacent separators, comprising the steps of: providing a core, said core being made of a low-melting-point metal; providing a holding member, said holding member being made of a light metal with a high thermal conductivity; interposing the core and the holding member between two of said preforms, said core forming the cooling water passages and said holding member holding said core; molding a separator by compressing and heating the preforms, the core, and the holding member en bloc; and forming the cooling water passages by melting and discharging the core in a subsequent annealing step.