Nkk Corporation

Jfe Steel Corporation

Yasuhiro Sodani

Yukio Kimura

Masayasu Ueno

Shogo Tomita

Kaoru Sato

Yuji Yamasaki

Masaaki Yamashita

Masaki Tada

Satoru Ando

Junichi Inagaki

Yoshiharu Sugimoto

Nobuo Nishiura

Hisato Noro

Shigehiro Tomotsune

Yoshiki Sakurai

Hiroyoshi Sakai

A surface treatment apparatus for a metal sheet has a blasting device for blasting solid particles having an average particle diameter of 300 &#x3bc;m or less onto the metal sheet which is continuously transferred, a blast chamber in which the blasting device is disposed, and cleaning means provided at the downstream side of the blast chamber for cleaning a surface of the metal sheet. At an inlet side of the blasting device, a deposits removing device for removing deposits on the surface of the metal sheet may be provided.

Surface treatment facility of metal plate and method for producing metal plate

The method for manufacturing galvanized steel sheet has a step of adjusting the surface texture thereof by blasting solid particles against the surface thereof. The surface texture is defined by at least one parameter selected from the group of parameters consisting of mean roughness Ra on the surface of steel sheet, peak count PPI on the surface of steel sheet, and filtered centerline waviness Wca on the surface of steel sheet. The galvanized steel sheet has a surface in dimple-pattern texture.

Galvanized steel sheet, method for manufacturing the same, and method for manufacturing press-formed product

A method for supplying rolling oil for cold rolling is provided wherein emulsion rolling oil is supplied using both: (i) a first rolling oil supply system for sypplying the emulsion rolling oil to a roll and a steel sheet being rolled in a recirculation mode, and (ii) a second rolling oil supply system for supplying the emulsion rolling oil to only the front and back surface of the stell sheet. The emulsion rolling oil supplied by the first and second supply systems comprise an emulsifier of a same type and concentration, and the second supply system is controlled so that an average particle diameter of emulsion is larger than an average particle diameter of emulsion of the first supply system. The emulsion of the second supply system, which has not stuck onto the steel sheet being rolled, is then joined to the emulsion of the first supply system.

Method for supplying rolling oil for cold rolling

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Fukuyama, Japan

Yasuhiro Sodani