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Q. Which of the following is not a cold extrusion process?
Explanation by: Mr. Dubey
cold extrusion is done at room temperature or near room temeprature. the processes, impact extrusion, hydrostatic extrusion and cold extrusion forging are the types of cold forging. the advantages of this over hot extrusion are the lack of oxidation, higher strength due to cold working, closer tolerances, and good surface finish.
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