Kabushiki Kaisha Kobe Seiko Sho

Hirohiko Sakai

Shingo Nomura

Kazutoshi Shimogori

Hiroshi Satoh

Koki Ikeda

Masao Toyama

Junji Kawahuku

Shoji Miyake

Masatoshi Iwai

Kenji Miki

Ichiro Kokubo

Hidetoshi Nishimoto

Shigeki Kirihara

Kanji Nakamura

Etuo Yamamoto

Hidetoshi Shimoto

A resin-coated steel sheet having good electrocoatability and weldability, characterized in that the resin coating is formed on the layer of zinc plating or zinc alloy plating (with or without subsequent chromate treatment) and is composed mainly of urethane resin containing (a) either colloidal silica or a silane coupling agent and (b) a phosphate of Al, Ba, Ca, Co, Fe, Mg, Mn or Zn in an amount of 0.01-35 wt % (with or without an additional organic pigment fine powder in an amount of 0.01-40 wt %).

Resin-coated steel sheet having good electrocoatability and weldability

Zn-Mg alloy is plated by vapor deposition on the surface of metals. Since Zn and Mg are vapor-deposited as a vapor mixture of an optional ratio on the surface of metals, plated layers of excellent corrosion resistance, peeling resistance of coating film, formability, etc. can be formed. There is disclosed a method of forming uniform vapor mixtures of Zn and Mg, and vapor-depositing them on the surface of metals as the method forming the vapor-deposited layers.

Zn-Mg alloy vapor deposition plated metals of high corrosion resistance,

A corrosion preventive steel sheet having an organic coating layer is described. The steel sheet is comprised of a zinc alloy-plated steel sheet, and a chromate layer and an organic coating layer formed in this order on at least one side of the steel sheet. The organic coating layer is formed from a coating composition comprised of 100 parts by weight of a water-soluble urethane resin and from 5 to 80 parts by weight of colloidal silica. A method for making the corrosion preventive steel sheet is also described.

Zinc alloy-plated corrosion preventive steel sheet having an organic

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

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Kakogawa, Japan

Hirohiko Sakai