Conductive and corrosion-resistant steel sheet
AssigneeTaiyo Steel Co., Ltd.
InventorsYuji Aoyama, Katsutoshi Kumai
Life of this patent
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Abstract
There is disclosed a conductive and corrosion resistant steel sheet comprising a steel sheet material having an arithmetic average roughness (Ra) of 0.01 to 2.0 .mu.m, preferably, 0.2 to 1.5 .mu.m, and a coating film applied thereon and having a dry thickness of 18 to 110%, preferably 30 to 90%, of said Ra.
Claims15
A conductive and corrosion-resistant steel sheet comprising a steel sheet material having an arithmetic average surface roughness (Ra) of 0.01 to 2.0 .mu.m, and a coating film applied thereon and having a thickness of 18 to 110% of said Ra, said coating film having been applied to said steel sheet material by a roll coater to form very thin film parts or partially exposed parts on tops of protruded portions of the surface of said steel sheet which allow an electric current to flow therethrough, while providing corrosion resistant properties to the steel sheet, wherein said coating film contains a coating material selected form the group consisting of a melamine-alkyd resin, a polyester resin, a polyvinylidene fluoride resin, an acrylic resin, a silicone-polyester resin, an epoxy resin and a urethane resin.
A conductive and corrosion-resistant steel sheet comprising a steel sheet material having an arithmetic average surface roughness (Ra) of 0.01 to 2.0 .mu.m, a coating film applied thereon and having a thickness of 18 to 110% of said Ra, and a chemical conversion treatment layer selected form the group consisting of a chromate layer, a zinc phosphate layer and an iron phosphate layer applied between said steel sheet material and said coating film, said coating film having been applied to said steel sheet by a roll coater to form very thin film parts or partially exposed parts on tops of protruded portions of the surface of said steel sheet which allow an electric current to flow therethrough, while providing corrosion resistant properties to the steel sheet.
A conductive and corrosion-resistant steel sheet comprising a steel sheet material having an arithmetic average surface roughness (RA) of 0.01 to 2.0 .mu.m, and a coating film applied thereon and having a thickness of 18 to 110% of said Ra, said coating film being made of a material selected from the group consisting of a melamine-alkyd resin, a polyester resin, a silicone-polyester resin, an epoxy resin and a urethane resin and containing metallic particles in said material, said coating film providing corrosion-resistant properties and electrical conductivity such that current may pass from a surface of said steel sheet material therethrough.
A conductive and corrosion-resistant steel sheet comprising a steel sheet material having an arithmetic average surface roughness (RA) of 0.01 to 2.0 .mu.m, a coating film applied thereon and having a thickness of 18 to 110% of said Ra, and a chemical conversion treatment layer applied between said steel sheet material and said coating film, said coating film being made of a material selected from the group consisting of a melamine-alkyd resin, a polyester resin, an epoxy resin and a urethane resin and containing metallic particles in said material, said coating film providing corrosion-resistant properties and electrical conductivity such that current may pass from a surface of said steel sheet material and a said chemical conversion treatment layer through the coating material.
A conductive and corrosion-resistant steel sheet comprising a steel sheet material having an arithmetic average surface roughness (Ra) of 0.01 to 2.0 .mu.m, a coating film applied thereon and having a thickness of 18 to 110% of said Ra, and a chemical conversion treatment layer applied between said steel sheet material and said coating film, said coating film having been applied to said steel sheet by a roll coater to form very thin film parts or partially exposed parts on tops of protruded portions of the surface of said steel sheet which allow an electric current to flow therethrough, while providing corrosion resistant properties to the steel sheet, wherein said coating film contains a coating material selected from the group consisting of a melamine-alkyd resin, a polyester resin, a polyvinylidene fluoride resin, an acrylic resin, a silicone-polyester resin, an epoxy resin and a urethane resin.
Dependencies are inferred from the claim text.