ELEKTROLYTISK ANORDNING FOR MERKNING AV FOREMAL AV METALL

摘要

At least one cylinder having electrically conductive portions and in tangential contact with a metallic tube is associated with a tank filled with electrolyte which is brought to the contact surface between cylinder and tube as a result of rotational motion imparted to the cylinder or to the tube by suitable driving means. An electric current generator is connected to the metallic tube and to at least one of the conductive portions of the cylinder.