Patent Number: 6,254,759

Title: Method and apparatus for anodizing objects

Abstract: A method and apparatus of anodizing a component, which is placed in an electrolyte solution. A number of pulses are applied to the solution and component. Each pulse is formed by a pattern having three magnitudes. The third magnitude is less than the first and second magnitudes, and all three magnitudes have the same polarity. The pulse pattern may include alternations between the first and second magnitudes, and following the alternations, the third magnitude. The fluid enters the reaction chamber from a transport chamber through a plurality of inlets directed toward the component, at an angle of between 60 and 70 degrees. The inlet is the cathode, and the component is the anode. Current flows between the cathode and the anode. The inlets are in a side wall where the fluid enters the reaction chamber substantially horizontally. The reaction chamber has at least one outlet beneath the inlets. Which may be in a bottom wall. The fluid follows a return path.

Inventors: Rasmussen; Jean (Maribel, WI)

Assignee: Pioneer Metal Finishing

International Classification: C25D 5/00 (20060101); C25D 11/02 (20060101); C25D 5/18 (20060101); C25D 5/08 (20060101); C25D 11/04 (20060101); C25D 011/04 ()

Expiration Date: 07/03/2018