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Classification of sand making machines and the difference between more than 2 million sand making machines

132 Moulding process Loose moulding sand is filled into the mould area formed by the pattern platepattern bolster the mould box and the filling frame Compressed air is then forced through the mould to compact the sand The air flows through the sand from the back of the mould to the pattern and escapes through vents in the pattern plate

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