Cold Extrusion

Cold Extrusion: Cold extrusion is the process done at room temperature or slightly elevated temperatures. This process can be used for most materials-subject to designing robust enough tooling that can withstand the stresses created by extrusion. Examples of the metals that can be extruded are lead, tin, aluminum alloys, copper, titanium, molybdenum, vanadium, steel. Examples of parts that are cold extruded are collapsible tubes, aluminum cans, cylinders, gear blanks. The advantages of cold extrusion are:

•	No oxidation takes place.
•	Good mechanical properties due to severe cold working as long as the temperatures created are below the re-crystallization temperature.
•	Good surface finish with the use of proper lubricants.

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