Metal Sheet Assembly having Zn-Al-Mg Coatings, an Acid Solution Application and an Adhesive
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Apr 11, 2019
app pub date -
Dec 3, 2018
filing date -
Apr 25, 2012
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Abstract
A metal sheet assembly is provided. The metal sheet assembly includes a first metal sheet having two faces, each face is hot dip coated with a metal coating comprising zinc, from 0.7 to 6 wt % of aluminum and from 0.1 to 10 wt % of magnesium. An acid solution with a pH from 1 to 4 is applied to outer surfaces of the metal coatings. An adhesive locally is applied on at least one acid solution-treated outer surface of the metal coating, the adhesive is selected from structural, reinforced structural or semi-structural adhesives, sealing putties and wedging putties. A second metal sheet is assembled to the first metal sheet via the adhesive.
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