PURPOSE: To obtain a proper grinding material for electrolytic grinding by fixating the adhesive or paint which is made of synthetic resin and into which the powder of titanium carbide or titanium nitride is mixed, onto a substrate in a belt form etc., thus providing said substrate with the electric conductivity and grinding performance.

CONSTITUTION: In order to obtain a grinding material used for electrolytic grinding, the adhesive or paint which is made of synthetic resin and in which the powder made of either titanium carbide or titanium nitride is mixed, is fixated onto a substrate which is made of woven fabric or synthetic resin etc. and in the form of a belt, thus providing said material with the electric conductivity and the polishing performance. The synthetic resin materials belonging to epoxy, phenol series, etc. are mixed with hardening agent if necessary and used as the above-mentioned adhesive or paint. As an example, titanium carbide 1 having a diameter of 0.3μm is mixed into the epoxy resin series adhesive 2 in 5% by volume, and said mixture is applied in a thickness of 10W30μm onto a substrate to manufacture a belt-form polishing material. When NO.304 stainless-steel is ground as an example, a grinding speed of 12mm3/min was obtained, and the amount of consumption of polishing material was 5mm3/min.