Method for reducing peeling of edge of supporting roller of heavy and medium plate mill

The invention discloses a method for reducing peeling of the edge of a supporting roller of a heavy and medium plate mill. The method specifically comprises the following steps: machining the roller body contour of the supporting roller into a smooth curve which is symmetrical about the length center line of the roller body, and expressing each half roller body contour curve by using a seven-powerfunction curve, wherein a curve equation y (x) is equal to a1x1 + a2x2 + a3x3 + a4x4 + a5x5 + a6x6 + a7x7, x represents the distance between a machining point and the length center line of the rollerbody; y (x) represents the grinding amount of the edge of the roller body contour of the supporting roller; a1, a2, a3, a4, a5, a6 and a7 are correspondingly shown as follows: a1 is equal to 1.32700475 * 10^ (-02); a2 is equal to 3.26565893 * 10^ (-05); a3 is equal to 4.62833359 * 10^ (-08); a4 is equal to 4.03695526 * 10^ (-11); a5 is equal to 2.14322108 * 10^ (-14); a6 is equal to 6.34965142 *10^ (-18); and a7 is equal