Method for controlling rolling surface roughness peak value of EDT automobile sheet of six-roller cold-rolling aluminum mill

The invention discloses a control method for the rolling surface roughness high peak value of an EDT automobile sheet of a six-roller aluminum cold rolling mill. The control method comprises the following steps that (1) a phi 480 mm/phi 560 mm/phi 1300 mm * 2050 mm six-roller HC cold rolling mill is adopted; (2) roller roughening is conducted, wherein the roughness Ra of the roughened roller ranges from 1.9 micrometers to 2.4 micrometers, and Rpc ranges from 100/cm to 120/cm; (3) the roll gap is close to zero, the rolling force is calibrated to be 1000-3000 KN, and the working roll Fwb and the middle roll bending force FImb are calibrated to be 15%-30%; and (4) a rolling force control mode is adopted. The purposes of effectively improving the peak value number and reducing the production cost can be achieved; and the product quality of the automobile sheet is obviously improved. 本发明公开了一种六辊铝冷轧机EDT汽车板轧制表面粗糙度高峰值数的控制方法，包括以下内容：（1）采用Ф480mm/Ф560mm/Ф1300mm*2050mm六辊HC冷轧机；（2）轧辊打毛：打毛后的轧辊粗糙度Ra：1.9-2.4μm，Rpc：100-120/cm；（3