Method for eliminating local wear of working roller of CVC (continually variable crown) mill

The invention relates to the technical field of steel rolling, in particular to a method for eliminating local wear of a working roller of a CVC (continually variable crown) mill, which comprises the following steps: (1) setting the shifting step, the upper bending force compensation limit and the lower bending force compensation limit of the working roller, given that the shifting increment of the working roller deltaD = Delta; (2) calculating the set bending force value F(i) of the ith roll of strip steel; (3) judging whether F(i) exceeds the bending force compensation limit; (4) outputtingthe set shifting value D(i) and the set bending force value F(i) of the working roller of the ith roll of strip steel; and (5) given that i = i +1,, carrying out presetting calculation of control parameters of a following roll of strip steel sheet. The periodic shifting frequency and amplitude of the working roller can be changed through changing the shifting step, the bending force compensation limits and other parameters, the effects of eliminating the local wear of the working roller and controlling local high points of edges of a hot-rolled sheets can be achieved, the promotion and application on CVC mills of the same category can be easily realized.