Influence of Multiple Dip-Coating on Permeability of Lost Foam Pattern Coating Layer

The permeability measuring method and process of the lost foam pattern coating layer was introduced.The influence of multiple dip-coating on the permeability of lost foam pattern coating layer was investigated.As a result,it was confirmed that,by reducing the number of practical coating layers,it's possible to obtain stable properties of lost foam pattern coating layer and increase productivity.