Process for the stripping of workpieces and stripping solution
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United States of America Patent
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Jun 16, 2015
Grant Date -
Mar 10, 2011
app pub date -
Apr 9, 2009
filing date -
May 2, 2008
priority date (Note) -
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Abstract
A material mixture for dissolving a coating system from a work piece comprises an aqueous, alkaline solution containing between 3 and 8 weight percent KMnO4 and at the same time having an alkaline fraction of between 6 and 15 weight percent. The alkaline fraction is formed in one embodiment by KOH or NaOH, wherein the pH of the solution is above 13. A method according to the present invention uses the above-described material mixture for wet-chemical delaminating of hard material coatings of the group: metallic AlCr, TiAlCr and other AlCr alloys; nitrides, carbides, borides, oxides thereof and combinations thereof.
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