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questions :What is extrusion?
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[Visitor (223.146.*.*)]answers [Chinese ]Time :2020-03-02
A punch or a punch is used to press the blank placed in the die to make it plastically flow, so as to obtain a pressure processing method corresponding to the shape of the mold hole or the concave-convex mold. When extruding, the billet generates three-dimensional compressive stress, and even the billet with lower plasticity can be extruded.

Paraphrase

Extrusion molding from four sides to the middle

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