Cold Extrusion of Steel: Part One

Cold extrusion of metals is one of the most important manufacturing processes today and effectively involves forcing the material through the die at room temperature to create a continuous product of consistent cross-section.
Although there are minor variations, the 3 main extrusion process can be covered by forward extrusion, backward extrusion and upsetting which differ basically by the direction of the metal flow during the extrusion process.

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