120# Black Silicon Carbide Sand for Cast Iron Grinding & Bra

Functions of Black Silicon Carbide for Sandblasting & Grinding
1.Remove rust, oxide scale and high-temperature black skin on cast iron workpieces.
2.Clear burrs, flashes and excess edges of machined brass and metal castings.
3.Create uniform delicate matte finish on brass surfaces for beautiful texture.
4.Form even micro roughness on workpiece surfaces to strengthen adhesion of paint, plating and coatings.
5.Grind off surface scratches to get smooth and consistent metal surface.
6.Strip old paint, carbon deposits and dirt without acid cleaning.
7.Relieve metal surface stress and enhance wear and corrosion resistance of parts.