Method for removing the hard material coating applied on a hard metal workpiece and a holding device for at least one workpiece

摘要

A hard material layer deposited on a hard metal work piece is removed by electrolytic passivation in which a maximum current density equal to at least 0.01 A/cm<2 >is generated on the work piece at the beginning of the layer removal process. The hard material layer rapidly flakes off without causing substantial damage to the hard metal material located underneath.