Method for Manufacturing Fuel Cell Separator and Fuel Cell Separator

A method for manufacturing a fuel cell separator, the method comprising

• a step of plastically deforming a bead part of a first separator and a bead part of a second separator by applying a preload to the bead part of the first separator and the bead part of the second separator, the first separator and the second separator being joined such that the bead part of the first separator and the bead part of the second separator face away from each other, the bead part protruding from a bottom part and a plurality of bridge parts protruding from the bottom part being formed on the first separator, the plurality of bridge parts forming flow passages that communicate with the bead part, the bead part protruding from a bottom part and a plurality of bridge parts protruding from the bottom part being formed on the second separator, the plurality of bridge parts forming flow passages that communicate with the bead part, wherein
• in a step of applying the preload, a deformation suppressing member is used to suppress deformation at the plurality of bridge parts and at a portion of the bottom part between the plurality of bridge parts.