N sand casting, re-usable, permanent patterns are used to make the sand moulds. The preparation and the bonding of this sand mould are the critical step and very often are the rate-controlling step of this process. Two main routes are used for bonding the sand moulds: • the "green sand" consists of mixtures of sand, clay and moisture. • the "dry sand" consists of sand and synthetic binders cured thermally or chem
G. M. Steel Casting Udyog
43, Natabar Paul Road, Rathtala, Belgachia, West Bengal - 711101, India
7/1, Rajkrishna Kumar Street , P.o. – Belurmath, Howrah - 711202, West Bengal - 711202, India
Nif Ispat Ltd.
46 M.a.k. Azad Road, West Bengal - 711101, India