The major purposes of this study were to design and manufacture the test machine for the grain distribution of foundry sand. Based on the review of literature, the periodic force is used so that the motor is on the condition of vibration in high-speed rotation. In 1998, the test machine was designed and manufactured for the grain distribution of foundry sand. Through eight experiments, proved that the test machine for the grain distribution of foundry sand is suitable for the function on teaching and learning. Keywords: Foundry Sand, Grain Distribution, Vibration, Defect of Castings
Foundry sand Grain distribution Vibration Defect of castings