The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2019
Filed:
Jun. 24, 2015
Nisshin Steel Co., Ltd., Tokyo, JP;
Atsuo Shimizu, Tokyo, JP;
Masanori Matsuno, Osaka, JP;
Masaya Yamamoto, Osaka, JP;
Hirofumi Taketsu, Osaka, JP;
NISSHIN STEEL CO., LTD., Tokyo, JP;
Abstract
A hot-dip Zn alloy plating layer is formed on a surface of a base steel sheet by immersing the base steel sheet in a hot-dip Zn alloy plating bath containing Al and Mg. An aqueous solution containing a polyatomic ion including Siand/or a polyatomic ion including Cris then contacted with a surface of the hot-dip Zn alloy plating layer. All of the aqueous solution coating the surface of the hot-dip Zn alloy plating layer is removed with a squeeze roller. The aqueous solution contains the polyatomic ion in a concentration of 0.01 g/L or more in terms of atom of Si and Cr. A surface temperature of the hot-dip Zn alloy plating layer when the aqueous solution is contacted with the surface of the hot-dip Zn alloy plating layer is 100° C. or above and equal to or less than a solidifying point of the plating layer.