Patent Number: 6,168,691

Title: Device for electrochemical treatment of elongate articles

Abstract: A method and a device are described for the electrochemical treatment of elongate articles, preferably bars. The article 10 is clamped at one end by means of a clamp 3 and is introduced into a hollow chamber that has a longitudinal axis, in an electrode 30, arranged in a dip bath with a periphery parallel to the axis, in as concentrically axial a manner as possible and is thereby directed through at least one axially displaceable, perforated screening mask 23,26 so that part of the area not to be treated electrochemically is screened from the electrode. The article and electrode are connected to a current source. A container 14 for treatment liquid has at least one electrode 30 therein, the electrode having a hollow chamber with a longitudinal axis and a periphery parallel to the axis. The article is introduced into the hollow chamber. At lease one screening mask 23,26 is axially adjustable within the hollow chamber and has openings for introducing the article. The mask can prevent electrochemical treatment of the article in specific areas. A current source and electrical connections are provided to the electrode and to the article.

Inventors: Kauper; Rudolf (Schwanstetten, DE), Lummer; Thomas (Greding, DE), Richter; Wolfgang (Berlin, DE), Silberhorn; Reinhard (Burgthann, DE), Krepelka; Manfred (Berlin, DE)

Assignee: Atotech Deutschland GmbH

International Classification: C25D 7/04 (20060101); C25D 5/02 (20060101); C25D 17/06 (20060101); C25D 017/00 ()

Expiration Date: 01/02/2018