Nippon Steel Nisshin Co., Ltd.

Ns Wheeling-Nisshin, Inc.

Nippon Steel Corporation

New Oji Paper Co, Ltd.

Shinichi Koga

Yasunori Hattori

Shinya Furukawa

Koutarou Ishii

Patrick Edward Pendleton

Tadaaki Miono

Shinichi Kamoshida

Takashi Kawamukai

Hiromi Uchida

Hisanori Yagi

Tetsuhiko Okano

Kazuhiro Yamada

Hideyuki Mikado

Provided is a hot-dip plating method that achieves good plating wettability between a metal material and a hot-dip plating bath and that makes it possible to reduce the amount of consumed energy as compared to conventional techniques. In a plating step included in the hot-dip plating method, vibration is applied to a hot-dip plating bath such that the ratio of the average sound pressure level (excluding noise) over ranges each lying between sound pressure peaks at harmonic frequencies of a fundamental frequency to the average sound pressure level (excluding noise) over the measured frequency range in an acoustic spectrum is greater than 0.2.

Hot-dip plating method

Provided is a hot-dip aluminized steel sheet with fine-sized spangles produced in a different way from conventional methods, and a method of producing a hot-dip aluminized steel sheet with fine-sized spangles in a different way from conventional methods. The hot-dip aluminized steel sheet includes: a substrate steel sheet; and an aluminum-based coating which is formed by a hot-dip method on the surface of the substrate steel sheet and in which the average B concentration is not less than 0.005 mass % and the sum of the average Ti concentration and the average V concentration is not more than 0.03 mass %.

Hot-dip aluminized steel strip and method of producing the same

A hot-dip coating equipment includes a cooling rate determining device that includes: a coefficient obtaining section configured to obtain coefficients &#x3b1;, &#x3b2;, &#x3b3;, and &#x3b4; associated with the hot-dip coating bath, in the following equation that expresses a degree of discoloration YI of the surface of a hot-dip coated steel sheet; and a rate determining section configured to determine an average cooling rate A so as to allow the YI of the following Expression (1) to be not more than a predetermined reference value, YI =(&#x3b1;&#xd7;[SE]+&#x3b2;)&#xd7;{(T&#x2212;ST)/A}+&#x3b3;&#xd7;[SE]+&#x3b4; . . . (1), where: [SE] is a concentration (mass %) of a specific element contained in the hot-dip coating bath; T is a temperature (&#xb0; C.) of the hot-dip coating bath; and ST is a solidification temperature (&#xb0; C.) at which the hot-dip coating bath is solidified.

Hot-dip coating equipment including cooling rate determining device, and information processing program

A moisture-proof paper sheet comprising a moisture-proof coating layer formed on a paper sheet substrate and comprising (a) a moisture-proof, film-forming synthetic resin (for example, carboxyl-modified SBR resin), (b) plate crystalline phyllosilicate compound particles with an average size of 5 to 50 .mu.m and an aspect ratio of 5 or more and (c) a moisture-proofness-enhancing agent, for example, urea-formaldehyde condensation reaction products, organoalkoxysilane compounds, or polyamidepolyurea compounds, has an enhanced resistance to water vapor permeation and, after use, the waste moisture-proof paper sheet can be easily re-pulped and recycled.

Moisture-proof paper sheet

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Tokyo, Japan

Shinichi Koga