Process for metallic coating of graphite discs or blocks and correspondingly metal-coated graphite discs or graphite blocks
AssigneeDeutsche Carbone AG
InventorWilhelm Latz
Life of this patent
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Abstract
Applying, onto graphite discs or blocks, especially carbon brushes of electric. machines, a metal coating which should have a high content of at least one metal, especially from the group comprising copper and tin, and which should reliably adhere to the graphite disc, so that the application is done in an environmentally friendly manner. To accomplish this, the metal is thermally sprayed onto a surface of the graphite disc or the graphite block.
Claims15
A process for applying to graphite discs or blocks, especially carbon brushes of electric machines, a metal coating with at least one metal, especially from the group comprising copper and tin, wherein the metal is thermally sprayed onto a surface of the graphite disc or block.
The process according to any one of claims 1 through 7, wherein the surface of the graphite discs or graphite blocks is roughened by sandblasting with corundum before the metal coating is sprayed on.
A metal-coated graphite disc or graphite block, especially for a carbon brush of electric machines, whose metal coating is comprised essentially of copper and/or tin, wherein coating is applied by thermal spraying.
Dependencies are inferred from the claim text.