Material for trilaminar stainless steel clad steel sheet, process for producing thick sheet or steel sheet for solid polymer type fuel cell separator, and solid polymer type fuel cell separator

• Main Authors: KANBE MOTOMICHI, TARUTANI YOSHIO, USHIO KUNIHIKO, SEKI AKIRA, YAMAMOTO HIDEAKI, YAZAWA TAKEO
• Format: Patent
• Language: Chinese; English
• Published: 17.09.2008
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PUNCHING METAL; ROLLING OF METAL; SOLDERING OR UNSOLDERING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

A process in which a material for clad steel sheet composed of a 0 to 0.3% B stainless steel as an inside layer material combined with, superimposed on both major surfaces thereof, 0.3 to 2.5% B stainless steels as an outer layer material is produced through the following steps of: step (1): disposing on side faces of the outer layer material protection materials with a length greater than those of the side faces, disposing a tab material on each end portion of the protection materials, and effecting bonding between tab material and protection material and between outer layer material and protection material, step (2): superimposing the outer layer material having portions of the protection materials bonded to the tab materials removed therefrom on the inside layer material to thereby obtain a combined material, and step (3): bonding together boundary regions of peripheral four side faces of the combined material. Further, the material produced by the above process is heated and subjected to preliminary rolli