Process and Device for Producing a Coated Structural Component

Abstract

The present invention relates to a method of manufacturing a coated structural component (10) for a vehicle, comprising the steps of: providing a base component (11), hot forming the base component (11) into a molded component (12), electrochemically deburring the molded component (12), and electrolytically applying a corrosion protection layer (13) to the deburred molded component (12) to produce the structural component (10). The invention further relates to an apparatus for carrying out a method according to the invention for producing a deburred and coated structural component.

1 . A method of manufacturing a coated structural component for a vehicle, comprising:
 providing a base component,   hot forming of the base component into a molded component,   electrochemical deburring of the molded component, and   electrolytic application of a corrosion protection layer to the deburred molded component to produce the structural component.   
     
     
         2 . The method according to  claim 1 , wherein
 the molded component has at least one forming edge produced by the hot forming and having a forming radius, wherein the electrochemical deburring for deburring at least one area section is carried out adjacent to the at least one forming edge.   
     
     
         3 . The method according to  claim 1 , wherein
 a zinc coating is applied as corrosion protection layer.   
     
     
         4 . The method according to  claim 3 , wherein
 after the zinc coating has been applied, a cathodic dip coating is applied to the coated molded component.   
     
     
         5 . The method according to  claim 1 , wherein
 the cathodic dip coating is applied with a layer thickness in a range between 10 μm and 40 μm.   
     
     
         6 . The method according to  claim 2 , wherein
 the electrochemical deburring of the molded component is performed by means of a cathode and an anode, the molded component being used as at least part of the anode and the cathode for the electrochemical deburring being positioned at a distance of less than  30  mm from the at least one forming edge.   
     
     
         7 . The method according to  claim 1 , wherein
 the electrochemical deburring is performed with an electrolytic current density in a range between 5 A/dm 2  and 15 A/dm 2 .   
     
     
         8 . The method according to  claim 1 , wherein
 the electrochemical deburring is performed over a period of time in a range between 3 minutes and 12 minutes.   
     
     
         9 . The method according to  claim 1 , wherein
 an electrolyte comprising sodium sulfate and sodium chloride is used for electrochemical deburring, wherein at least twice as much sodium sulfate as sodium chloride is used.   
     
     
         10 . An apparatus for carrying out a method according to  claim 1  for producing a deburred and coated structural component in the form of a body component for a vehicle.