Invention Grant
- Patent Title: Method for producing a coated metal strip having an improved appearance
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Application No.: US15703930Application Date: 2017-09-13
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Publication No.: US10550458B2Publication Date: 2020-02-04
- Inventor: Jean-Michel Mataigne , Luc Diez
- Applicant: ArcelorMittal
- Applicant Address: LU Luxembourg
- Assignee: ARCELORMITTAL
- Current Assignee: ARCELORMITTAL
- Current Assignee Address: LU Luxembourg
- Agency: Davidson, Davidson & Kappel, LLC
- Priority: EP08290450 20080514
- Main IPC: C23C2/06
- IPC: C23C2/06 ; C23C26/00 ; C23C2/04 ; C23C2/26 ; B32B15/04 ; B32B15/18 ; B32B15/01 ; B32B15/20 ; C23C2/00 ; C23C30/00

Abstract:
A process for manufacturing a coated metal strip having a metallic corrosion protection coating is provided. The process includes passing a metal strip through a molten metal bath comprising from 2 to 8 wt % aluminum, 0 to 5 wt % magnesium, up to 0.3 wt % additional elements, and a balance including zinc and inevitable impurities, to yield a molten metal coated metal strip, wiping the molten metal coated metal strip with a nozzle spraying a gas on either side of the molten metal coated metal strip and cooling the coating in a controlled manner until the coating has completely solidified, to obtain the coated metal strip. A temperature of the molten metal bath is from 350 to 700° C., and the cooling is conducted at a rate less than 15° C./s between a temperature on leaving a unit where the wiping occurs and a start of solidification of the coating, and then at a rate greater than or equal to 15° C./s between a start and an end of solidification of the coating.
Public/Granted literature
- US20180002798A1 Method for Producing a Coated Metal Strip Having an Improved Appearance Public/Granted day:2018-01-04
Information query
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