Method for managing service life of blades of mixing machine

The invention relates to a method for managing the service life of blades of a mixing machine and belongs to the field of automation. The method comprises the following steps: S1, inputting a theoretical use duration T0 and a theoretical processing material amount M0 of blade factory design, and respectively defining the theoretical use duration T0 and the theoretical processing material amount M0 as initial values of a blade theoretical life index 1 and an index 2; s2, recording the initial boundary dimension V0 of the blade; s3, establishing a blade quality basic attribute library; s4, recording the accumulated operation duration Ti of the blade, the accumulated processing material amount Mi and the boundary dimension Vi measured during middle fixed repair; s5, synchronously collecting process operation state parameters of the mixing machine, and marking blades of the same batch; s6, accumulating to form a historical database and an expert knowledge base of the blade life, and carrying out statistical analy