Abstract
When tungsten carbide (workpiece) is ground with a cast-iron wheel electrode, the electrode wear is investigated and the following results are obtained.
(1) The wear ratio is about irrelevant to the condenser capacity and the charging resistance, but it decreases with increasing source voltage.
(2) When tungsten carbide is connected with the anode, it is found that the smaller is the inductance in the discharge circuit, the lower becomes the wear ratio.
(3) The wear ratio is scarcely influenced by dielectric fluids (mineral oil), and therefore it is desirable to use such fluids as increase the metal-removal rate.
From the above results the condition can be found, which decreases the wear ratio and increases the metal-removal rate.
