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Electrochemical grinding

Electrochemical process in which a grinding wheel of abrasive material rotates along with the surface that is covered with an electrolyte and in which both the electrolyte and the abrasive wheel contributes to the grinding.

Beskrivning
Illustration of Electrochemical grinding

The process

By connecting to a power source, the workpiece acts as anode and the tool as cathode. The process is immersed in an electrolyte which allows the workpiece to be dissolved by accelerated corrosion resulting from electrochemical machining, which in this process does about 90% of the cutting. The remaining 10% is removed by the abrasive tool that uncovers non-corroded material faster, which accelerates the electrochemical machining.

Electrochemical grinding
Process films
Advantages and disadvantages
In comparison with alternative methods
Better life for grinding wheels
Can process hard materials
Stress free
No cracking, No hardening of workpiece
Better surface finish
Tight tolerances
Both the workpiece and the grinding wheel must be conductive
Limited number of suitable workpiece materials
Only applicable for grinding surface
Electrolytic liquid can cause corrosion of the workpiece and the grinding wheel