Rolling area of copper strip;

The plate rolling area is divided into 180 initial rolling and 110 intermediate rolling according to the rollers. According to different sizes of rollers, the copper strip that has been hot-rolled and forged in a sealed furnace is processed from rough to fine through the above two steps. Similarly, I have also recorded the time taken for each step:
First rolling time: 05:37 for the first time, 05:53 for the second time, 05:59 for the third time, 05:14 for the fourth time, and 05:22 for the fifth time. The average time for each strip above is 05:37, and this step processes an average of 12 copper strips per hour.