Notice of RetractionStudy on combined process of ultrasonic vibration-pulse discharge-grinding

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Sintered Nd-Fe-B magnet is the third generation rare earth permanent magnetic material. The combined process of ultrasonic vibration - pulse discharge - grinding is studied in this paper. The equipment for the ternary combined process is developed, including grinding wheel, pulse power, grinding tool and constant pressure feeding device. According to the experiment results, the change trend of material removal rate and normal grinding force was analyzed; contrasted with grinding process, the micro structure of machined surface of combined process was studied; the dressing of CBN grinding wheel was researched, and the advantage of pulse discharge dressing was pointed out.