SURFACE MODIFICATION OF A ZINC-BASED METAL COATING IN A HOT-DIP COATING PROCESS
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United States of America Patent
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May 2, 2024
app pub date -
Feb 24, 2022
filing date -
Mar 4, 2021
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Abstract
The invention relates to a striplike or sheetlike steel substrate hot-dip-coated with a metallic coating based on zinc and having a modified surface, and to a method for producing a semifinished product with modified surface, comprising at least one method step of at least regionally modifying the surface of a coated, skin-pass-rolled, oiled and cleaned metallic steel substrate by means of atmospheric-pressure plasma treatment of said surface regions with oxygen, air, forming gas or a mixture of 2 or more of these gases as process gas. The invention further relates to the accordingly produced semifinished products and/or flat steel products, optionally formed semifinished products and/or flat steel products, and to their use.
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