Abstract
This study was performed to investigate the effects of kinetic energy and injection angle on the surface condition of carbide in the blast polishing process. Polishing speed showed a maximum value for 30 s after starting polishing under all kinetic energy conditions. The bottom part of the carbide surface was polished with a polishing speed that was about 75% of the flat part. Polishing speed and reduction speed of surface roughness showed maximum values at an injection angle of 45°. Reduction speed of surface roughness showed a maximum value for 150 s after starting polishing in water content rate of 10% with the smallest of kinetic energy, but the saturated surface roughness value showed a maximum value in water content rate of 10%.
