Method for improving wear resistance of bar cutting hole pattern

The invention belongs to the field of steel rolling processes, and relates to a method for improving the wear resistance of bar slitting hole patterns, which is characterized in that hole pattern parameters are optimized, the rolling reduction distribution of rolled piece material patterns in a slitting unit is improved, and the wedge tip strength of pre-slitting holes and slitting holes is enhanced, so that the wear resistance and the steel passing amount of hole grooves are remarkably improved, and the hole groove replacement frequency is reduced; and the operation efficiency of the production line is improved. Specifically, the method relates to adjustment of H and R parameters of a pre-segmentation hole (the 13th frame of the segmentation unit) and adjustment of h, r and alpha parameters of a segmentation hole (the 14th frame of the segmentation unit). The H parameter of the pre-segmentation hole is adjusted to an X value, and the R parameter is adjusted to a Y value; the parameter h of the segmentation h