Research on the grinding performance of grinding wheel in the initial grinding stage after electric spark dressing of grinding wheel.

Electric spark dressing is an effective dressing method for metal-bonded diamond grinding wheel that offers high precision, high efficiency, and low cost. This study focused on the influence of discharge voltage, discharge current, and power pulse width on the surface morphology of the grinding wheel. The electric spark dressing experiments on metal-bonded grinding wheel and the grinding experiments of SiC ceramics were carried out, using a single-factor method. The surface morphology of the grinding wheel and the surface roughness of the workpiece were analyzed after removing a certain volume of SiC ceramics. It was found that larger electrical parameters could improve the dressing efficiency, and they could also cause adverse effects on the grinding wheel surface such as abrasive shedding, looseness, and bond melting recasting. In the early stage of grinding wheel, surface damage was serious, and grinding workpiece surface roughness was poor. These findings can serve as a practical reference for the selection of electric spark dressing for metal bond diamond grinding wheels. [ABSTRACT FROM AUTHOR]