Coating for Mould Process makes sand mould surface hard, to avoid sand erosion. The Coating can be applied with the help of spray system on the sand surface and allowed to dry. The Coating can be used as a base coating prior to application of the refractory dressing and is suitable for green sand mould. The Coating for Mould Process has the feature of accurate casting details, reduced sand wash, cleaner casting surface, strengthening of sharp mould edges and is easy to use.