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Explain about the Impact extrusion

Blank is placed over the die and pressed by punch. Metal is squirted upward round the punch. Thickness of the part is fixed by the gap between punch and die. This is a cold working process and is mainly used for non-ferrous metals such as zinc, lead, tin and aluminium alloy for the manufacture of collapsible tubes for shaving cream, tooth pastes etc.

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Category:- Chemistry
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