Method of deburring foundry cores - has cores placed in ring vibrator and grinding bodies added to these

摘要

Foundry cores are deburned and coated in a ring vibrator in which the cores follow a spiral path. Grinding bodies are added to the vibrator, of equal size, form, and density, their bulk density corresp. to the density of the cores. The grinding bodies consists of a solid core with a harder shell, the shell being softer than the surface of the cores. They have a heavily rounded edges or are round and are natural products, such as rice or maize grains or pulses. ADVANTAGE - Throughput rate of cores is increased.