In order to get high accuracy of ASME SA36 steel sheets thickness, AGC is an essential technology. There are many ways of AGC. The most commonly used method is to use finishing mill outlet thickness gauge to measure ASME SA36 steel sheets thickness deviation, and to control monitor AGC at the down position of all racks after finishing.
However, when the gain feedback between the frame is not correct, the correction of ASME SA36 steel sheets thickness will focus on a particular frame, and sometimes it can lead to large load changes in order to adapt to the rolling of ultra thin ASME SA36 steel sheets that have very large plastic constant. Based on the measured thickness of each rear rack, the ASME SA36 mild steel sheets thickness deviation is minimized. At the same time, because the absolute value AGC is also used on the front rack of the ASME SA36 steel sheets thickness gauge, the SA36 steel sheets thickness control system of the whole rack can be achieved. Because SA36 carbon steel sheets thickness control system does not focus the correction of plate thickness deviation on a specific frame, it can control ASME SA36 steel sheets with high precision.
25% ASME SA36 steel sheets thickness change is necessary when sheets rolling is from 1.2mm to 0.9mm thick. There is no need to make a great change in the thickness change of ultra-thin hot rolled ASME SA36 steel sheets. For this reason, the best screw down procedure should be set before and after the thickness change. According to the setting result, the position and speed of the whole frame are changed, and the middle ASME SA36 steel plate thickness changing system based on setting calculation is developed.
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