Hot-dip zn-alloy-plated steel sheet
US-2016305003-A1 · Oct 20, 2016 · US
Method of producing hot-dip Zn alloy-plated steel sheet
US10125414B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10125414-B2 |
| Application number | US-201715606254-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 26, 2017 |
| Priority date | Dec 3, 2013 |
| Publication date | Nov 13, 2018 |
| Grant date | Nov 13, 2018 |
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Abstract
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A method of producing a hot-dip Zn alloy-plated steel sheet includes: dipping a base steel sheet in a hot-dip Zn alloy plating bath to form a hot-dip Zn alloy plating layer on a surface of the base steel sheet; and contacting an aqueous solution containing a water-soluble corrosion inhibitor with a surface of the hot-dip Zn alloy plating layer to cool the base steel sheet and the hot-dip Zn alloy plating layer having a raised temperature through formation of the hot-dip Zn alloy plating layer. A temperature of the surface of the hot-dip Zn alloy plating layer when the aqueous solution is to be contacted with the surface of the hot-dip Zn alloy plating layer is equal to or more than 100° C. and equal to or less than a solidifying point of the plating layer. The aqueous solution containing the water-soluble corrosion inhibitor satisfies the Equation [{(Z0−Z1)/Z0}100≥20].
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of producing a hot-dip Zn alloy-plated steel sheet comprising: dipping a base steel sheet in a hot-dip Zn alloy plating bath to form a hot-dip Zn alloy plating layer on a surface of the base steel sheet; and contacting an aqueous solution containing a water-soluble corrosion inhibitor with a surface of the hot-dip Zn alloy plating layer to cool the base steel sheet and the hot-dip Zn alloy plating layer having a raised temperature through formation of the hot-dip Zn alloy plating layer, wherein a temperature of the surface of the hot-dip Zn alloy plating layer when the aqueous solution is to be contacted with the surface of the hot-dip Zn alloy plating layer is equal to or more than 100° C. and equal to or less than a solidifying point of the hot-dip Zn alloy plating layer; and wherein the aqueous solution containing the water-soluble corrosion inhibitor satisfies following Equation 1: Z 0 - Z 1 Z 0 × 100 ≥ 20 ( Equation 1 ) Z 0 is a corrosion current density of the hot-dip Zn alloy-plated steel sheet measured in a 0.5 M NaCl aqueous solution not containing the water-soluble corrosion inhibitor, and Z 1 is a corrosion current density of the hot-dip Zn alloy-plated steel sheet measured in the aqueous solution containing the water-soluble corrosion inhibitor, in which NaCl is further dissolved so that a final concentration of NaCl is 0.5 M, wherein the 0.5M NaCl aqueous solution not containing the water-soluble corrosion inhibitor has the same composition as the aqueous solution containing the water-soluble corrosion inhibitor in which NaCl is further dissolved, except for the absence of the water-soluble corrosion inhibitor.
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in markedly alkaline liquids · CPC title
with aluminium as the next major constituent · CPC title
one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title
Thermal after-treatment, e.g. treatment in oil bath · CPC title
Coating with alloys · CPC title
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- What does patent US10125414B2 cover?
- A method of producing a hot-dip Zn alloy-plated steel sheet includes: dipping a base steel sheet in a hot-dip Zn alloy plating bath to form a hot-dip Zn alloy plating layer on a surface of the base steel sheet; and contacting an aqueous solution containing a water-soluble corrosion inhibitor with a surface of the hot-dip Zn alloy plating layer to cool the base steel sheet and the hot-dip Zn all…
- Who is the assignee on this patent?
- Nisshin Steel Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C22C18/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 13 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).