| 摘要 |
PROBLEM TO BE SOLVED: To save cost and make the thickness ratio of both steel plates free by forming a center plate for separating a cathode gas and an anode gas by pressing metal molds against both surfaces of piled nickel steel plate and stainless steel plate. SOLUTION: A center plate 8 constituting a separator is formed by piling up a nickel steel plate 10a and a stainless steel plate 10b, interposing them between an upper metal mold 11a and a lower metal mold 11b, then pressing. When trapping air is anticipated between both steel plates 10a, 10b, air exhaust holes are formed in suitable portions, and closed by welding or the like after the center plate 8 was formed. By making the piling up surfaces of both steel plates rough before press forming, the adhesion of both steel plates are increased. The center plate 8 formed in this process has better adhesion compared with a clad steel plate in spite of having the same forming state, has low cost, no limitation of production dimension, and no limitation of the thickness ratio of both steel plates. |
