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Q. Explain Moulding Sand for Non-ferrous Casting?
The melting point of non- ferrous metal is much lower than that of ferrous metals. Therefore, the moulding sands for non-ferrous casting may be less refractory and permeable. Also, a smooth surface is desirable on non-ferrous casting. Due to all this, the moulding sands for non-ferrous casting contain a considerable amount of clay and fine grained.
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Q. How can you implement Permeability test As already defined, permeability of porosity of the moulding sand is the message of its ability to permit air to flow through it.
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