# US 8,771,492 B2 · Device and method for electrochemical treatment

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- Number: US 8,771,492 B2
- Document ID: US8771492B2
- Status: Granted
- Kind: B2
- Application number: 12/672,398
- Filed: 2008-09-12
- Published: 2011-10-20
- Granted: 2014-07-08
- Earliest claimed: 2007-09-14
- Assignees: Kennametal Inc.
- Applicants: Rainer Huss; Patrick Matt; Rene Wodrich; Ulrich Franz Burmester
- Inventors: Rainer Huss; Patrick Matt; Rene Wodrich; Ulrich Franz Burmester
- Web page: https://patentgrep.com/patent/US8771492B2

## CPC

- B23H 3/08: Working media
- B23H 3/10: Supply or regeneration of working media
- B23H: WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K3/18)

## Abstract

The present invention relates to a method and device for the electrochemical treatment of at least one component, which has a treatment chamber and at least one feed unit for an electrolyte to the treatment chamber, and at least one way for setting the pH value of the electrolyte being provided before the treatment chamber.

## Claims

### Claim 1

A device for the electrochemical treatment of at least one component, comprising a treatment space, at least one supply arrangement for supplying an electrolyte to the treatment space, and at least one setting means for setting the pH value of at least two pH value-modified part quantities of the electrolyte, the setting means being provided upstream of the treatment space and downstream of an electrolyte reservoir,
wherein the treatment space comprises an anode, a cathode, a tool, and the at least one component, wherein the tool is contacted with the cathode and the at least one component is contacted with the anode, and wherein a working gap exists between the at least one component and the tool.

### Claim 2 (depends on 1)

The device as claimed in claim 1, the setting means being suitable for increasing and/or reducing the pH value.

### Claim 3 (depends on 1)

The device as claimed in claim 1, the setting means being an electrodialysis cell.

### Claim 4 (depends on 1)

The device as claimed in claim 1, the supply arrangement having first conduction means for supplying a part quantity of electrolyte with a reduced pH value.

### Claim 5 (depends on 1)

The device as claimed in claim 1, the supply arrangement having second conduction means for supplying a part quantity of electrolyte with an increased pH value.

### Claim 6 (depends on 1)

The device as claimed in claim 1, the supply means being designed as a closed circuit.

### Claim 7 (depends on 1)

The device as claimed in claim 1, further comprising a neutralization tank downstream of the treatment space and upstream of the electrolyte reservoir.

### Claim 8 (depends on 4)

The device as claimed in claim 4, further comprising a neutralization tank downstream of the treatment space and upstream of the electrolyte reservoir.

### Claim 9 (depends on 4)

The device as claimed in claim 4, the supply arrangement further comprising a second conduction means for supplying a part quantity of electrolyte with an increased pH value to a point downstream of the treatment space.

### Claim 10 (depends on 8)

The device as claimed in claim 8, the supply arrangement further comprising a second conduction means for supplying a part quantity of electrolyte with an increased pH value to the neutralization tank.