Preparation method of pure titanium wide fine grain plate for cathode roller

The invention provides a preparation method of a pure titanium wide-width fine-grain plate for a cathode roller, which comprises the following steps: carrying out first heating rolling, plate shape and surface treatment, blanking, second heating rolling, straightening, annealing and plate shape and surface treatment on a pure titanium plate blank to obtain a finished product of the wide-width pure titanium fine-grain plate for the cathode roller. The grain size range of the prepared wide pure titanium fine grain plate for the cathode roller is 8-11 grades, the tensile strength Rm ranges from 300 Mpa to 400 Mpa, the yield strength RP ranges from 0.2200 Mpa to 280 Mpa, the percentage elongation after fracture A is larger than 40%, the problems that the grain size of a pure titanium plate is large and uneven are solved, and the use requirement of the plate for the cathode roller is met. 本发明提供一种阴极辊用纯钛宽幅细晶板材的制备方法，将纯钛板坯进行第一火次轧制、板型及表面处理、下料、第二火次轧制、矫直、退火以及板型及表面处理，得到成品阴极辊用宽幅纯钛细晶板材。本发明制备的阴极辊用宽幅纯钛细晶板材的晶粒度范围在8～11级，抗拉强度Rm3