Method for detecting abrasion of double rollers

The invention discloses a roller pair wear detection method, which comprises the following steps: step 1, cutting a corresponding continuously coated pole piece according to the width of a roller pair, measuring the thickness of the pole piece by using a measuring device to obtain measurement data of n rows and y columns of measurement positions, n being greater than or equal to 2, y being greater than 1, and the column direction being the coating direction of the pole piece; step 2, inputting measurement data of the pole piece before rolling into a table, calculating an average value of the measurement data of each column, and performing comparative analysis; 3, the pole piece is fed and rolled, the left side and the right side are marked, the thickness of the rolled pole piece is measured through measurement equipment, measurement data of x rows and y columns of measurement positions are obtained, and x is larger than or equal to 2; and step 4, inputting the measurement data of the rolled pole piece into a