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Cold - Extrusion Of Metal In Manufacturing

The Principle of cold extrusion is exactly similar to that of  hot extrusion. Of the various processes of extrusion, impact extrusion is essentially a cold-extrusion method.

Impact Extrusion

Impact Extrusion is limited primarily for making small workpieces from the more ductile metals. The work material is placed in position into blind die and a ram punch with clearance is forced into the die, causing the metal to flow plastically around the punch. The outside diameter of the tube is the same as the diameter of  the die, and the thickness is controlled by the clearance between the punch and die. The extruding force is usually supplied by a mechanical press. Collapsible medicine tube and tooth paste tubes are made in this way. 


 Impact Extrusion



check out other cold working processes

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