Method for the surface treatment of stainless steel
AssigneePoligrat GmbH
InventorsOlaf Boehme, Siegfried Piesslinger-Schweiger
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Abstract
In a method for surface treatment of stainless steel, the thermally produced layers of oxide are contacted with a composition effective to dissolve iron ions out of the layers of oxide.
Claims9
A method for surface treatment of stainless steel wherein thermally produced layers of oxide are treated with a composition, characterized in that the thermal layers of oxide are contacted with a composition effective to dissolve iron ions out of the thermal layers of oxide.
The use of a composition which contains a complexing agent for iron and is essentially free of hydrofluoric acid or fluoride ions, for surface treatment of a workpiece of stainless steel, wherein this surface includes thermally produced layers of oxide.
Dependencies are inferred from the claim text.