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The metal's ability to recrystallize at high temperature is used in hot processing. 2. Recrystallization is the growth of new, deform-free grains. 3. During hot treatment the metal can undergo a very large plastic compression deformity. 4. Cold treatment makes the metal firmer and stronger, but some metals have a deformation limit. 5. Leaf rentals can be hot or cold. 6. The surface of the cold-rolled sheet is smoother and stronger. 7. Cross-section fillers for extrusion can be simple or complex. 8. Aluminium and copper alloys are best for extrusion because of their plasticity during deformation. 9. Aluminum cans, tubes for toothpaste are examples of the use of stamping squeezing. 10. The thickness of the wall of the aluminum jar is determined by the gap between the punch and the stamp.
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