本实验的目的是对铜进行冷加工，观察铜的结构变化，并对冷加工后的金属进行

Purpose of this experiment is cold worked copper, observe the structure of copper, and metal annealing after cold working, to obtain its recrystallization temperature. Experiment starts rolling process. The process is a three copper thickness decreased to 10%, 30%, 50%, which is an expanded copper. Non-rolled and rolled copper is cut to 5, annealed at various temperature for 30 minutes, showing a perfect appearance (200 degrees, 300 degrees, 600 degrees), where one untreated. These copper is then conducted to obtain a hardness value hardness test. Microstructure of the samples were then observed with a microscope. Determination of the recrystallization temperature, and drawn in various tissues. Finally, cold drawn hardness profile at the annealing temperature.

The purpose of this experiment is to cool the copper, observe the structural changes of the copper, and anneal the cold-processed metal to obtain its recrystallization temperature. The experiment begins with a scrolling process. The process is to reduce the thickness of the three pieces of copper to 10%, 30%, 50%, one of which is the expanded copper. The rolled and unrolled copper was cut into 5 pieces and annealed for 30 minutes at different temperatures, giving it a perfect appearance (200 degrees, 300 degrees, 600 degrees), one of which was untreated. The copper sheets are then tested for hardness. The microscopic structure of the sample is then observed under a microscope. The recrystallization temperature was measured and various tissues were mapped. Finally, the cold-processing hardness curve at the annealing temperature is drawn.

The purpose of this experiment is to observe the structural changes of copper by cold working and annealing the cold-worked metal to obtain its recrystallization temperature. The experiment begins with the rolling process. The process is to reduce the thickness of three pieces of copper to 10%, 30% and 50% respectively, one of which is unfolded copper. The rolled and uncoiled copper is cut into five pieces, annealed at different temperatures for 30 minutes, showing a perfect appearance (200 degrees, 300 degrees, 600 degrees), one of which is untreated. Then the hardness of these copper sheets was tested to obtain the hardness value. Microstructure of the sample was then observed under a microscope. The recrystallization temperature was measured and various structures were plotted. Finally, the hardness curve of cold working at annealing temperature is drawn.<br>