Kabushiki Kaisha Kobe Seiko Sho

Kobe Steel, Ltd.

Masatoshi Iwai

Hiroo Shige

Kazuhisa Fujisawa

Hironobu Nakanishi

Shigeki Kirihara

Takeshi Watase

Ichiro Kokubo

Hirohiko Sakai

Hiroaki Nakano

Kuniyasu Araga

Yutaka Kitou

A resin coated metal plate having excellent formability comprises, on a metal plate, a resin coating layer containing a conductive filler and a corrosion inhibitor, a matrix resin constituting the resin coating layer is made mainly of a flexible epoxy resin and has a modulus of elasticity of not less than 3 GPa. When secondarily cured, the resin coated metal plate is imparted with excellent weldability and corrosion resistance.

Resin coated metal plate having excellent formability, weldability and corrosion resistance, and worked articles using the resin coated metal plate and method for manufacturing same

A resin coated metal sheet of the invention has an epoxy resin layer on a galvanized metal sheet, wherein the resin layer contains iron phosphide and at least one selected from the group consisting of aluminum triphosphate, calcium ion exchange silica and amorphous magnesium silicate compound. In the resin coated metal sheet, the epoxy resin is an urethane modified epoxy resin and/or dimer acid modified epoxy resin, and the iron phosphide has a maximum particle diameter of 15 &#x3bc;m or less. The resin coated metal sheet has excellent weldability, formability and corrosion resistance.

Resin coated metal sheet

Provided are a Zn&mdash;Mg electroplated metal sheet excellent in corrosion resistance, formability and productivity, and a fabrication process therefor. The Zn&mdash;Mg electroplated metal sheet comprises a Zn&mdash;Mg electroplated layer including Mg and Zn, the Zn being a main component, formed on at least one surface of a metal substrate material. The Zn&mdash;Mg electroplated layer shows more excellent corrosion resistance by including a C component therein. The Zn&mdash;Mg electroplated metal sheet can be fabricated by performing electroplating with an acidic aqueous solution including metal salts of Zn and Mg, and in addition, a surface active agent.

Zn-Mg electroplated metal sheet and fabrication process therefor

A lubricant film coated steel sheet having excellent phosphatability, in accordance with the present invention, is a lubricant film coated steel sheet produced by forming a coating containing silicic acid or silicate on a steel sheet or a plated steel sheet, wherein the surface roughness of the steel sheet or the plated steel sheet is 0.5 to 1.5 .mu.m as the centerline-average roughness RA and the PPI (cut-off value of 1.25 .mu.m) thereof is 75 to 300; and the content of silicic acid or silicate in the coating is 1 to 200 mg/m.sup.2 as corrected into dried SiO.sub.2 weight or the coating ratio of the coating is 1 to 60%.

Lubricant film coated steel sheet with excellent phosphatability and

An article of manufacture comprising a steel substrate coated with an electroplated metallic double layer with good corrosion resistance after painting and wet adhesion of paint film; said article having on the steel substrate a first layer of electroplated Zn-Ni alloy containing 7-15 wt % of Ni and on the first layer and, on said first layer, a second electroplated layer of iron or Fe-Zn alloy containing more than 60% of Fe and less than 40% of Zn.

Double-layer electroplated steel article with corrosion resistance after

An electroplated corrosion resistant steel, having on a base steel a first plated layer of a Zn-Ni alloy containing 5-20% of Ni and a second electroplated layer of zinc containing 0.005-0.5% of Cr. A method for producing the high corrosion resistant steel material is also disclosed.

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Kakogawa, Japan

Masatoshi Iwai