Distinguish, differentiate, compare and explain what is the difference between Cold and Hot Extrusion. Comparison and Differences.
Differences between Cold and Hot Extrusion
| S.No. | Cold Extrusion | Hot Extrusion |
| 1 | Better surface finish and lack of oxide layers. | Surface is coated with oxide layers. Surface finish not comparable with cold extrusion. |
| 2 | Imprord mechanical properties due to strain hardening. | Since processing is done hot recrystallisation takes place. |
| 3 | Good control of dimensional tolerance; no machining or very little machining required. | Dimensional control not comparable with cold extrusion products. |
| 4 | High production rates at low cost. Fit for individual component production. | High production rates but process fit for hulk material, not individual components. |
| 5 | Tooling subjected to high stresses. | Tooling subjected to high stresses as well as to high temperature. Tooling stresses are however lower than for cold extrusion. |
| 6 | Lubrication is crucial. | Lubrication is crucial. |
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Difference between Hot Extrusion vs Cold
Cold vs Hot Extrusion
Differences between Hot Extrusion vs Cold
