Claims
- 1. 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.
- 2. A conductive and corrosion-resistant steel sheet according to claim 1, wherein the arithmetic average surface roughness (Ra) is 0.2 to 1.5 .mu.m.
- 3. A conductive and corrosion-resistant steel sheet according to claim 1, wherein the coating film applied on the steel sheet has a thickness of 30 to 90% of said Ra.
- 4. 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.
- 5. A conductive and corrosion-resistant steel sheet according to claim 4, wherein the arithmetic average surface roughness (Ra) is 0.2 to 1.5 .mu.m.
- 6. A conductive and corrosion-resistant steel sheet according to claim 4, wherein the coating film applied on the steel sheet has a thickness of 30 to 90% of said Ra.
- 7. A conductive and corrosion-resistant steel sheet according to claim 4, wherein the chemical conversion treatment layer is a chromate layer.
- 8. A conductive and corrosion-resistant steel sheet according to claim 4, wherein the chemical conversion treatment layer is a zinc phosphate layer.
- 9. A conductive and corrosion-resistant steel sheet according to claim 4, wherein the chemical conversion treatment layer is an iron phosphate layer.
- 10. A coating according to claim 4, in which the 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.
- 11. 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.
- 12. A coating according to claim 11 in which the coating material is a polyester coating containing metallic particles therein.
- 13. 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.
- 14. A coating according to claim 13 in which the coating material is a polyester coating containing metallic particles therein.
- 15. 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.
Priority Claims (1)
Number |
Date |
Country |
Kind |
61-150595 |
Jun 1986 |
JPX |
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Parent Case Info
This application is a continuation of now abandoned application, Ser. No. 07/065,512 filed on Jun. 23, 1987, abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
4476 |
Feb 1972 |
JPX |
239991 |
Oct 1986 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
65512 |
Jun 1987 |
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