Heat treatment feeding roller bar

The invention provides a heat treatment feeding roller bar. The heat treatment feeding roller bar comprises a cylindrical roller face and a friction increasing coating sprayed on the roller face, the cylindrical roller face is square hatching knurling and comprises double-walking-direction grooves and square protruding blocks, 45-degree included angles are formed between the walking directions of the grooves and the axial direction of the roller bar, included angles formed between the grooves in different directions are 90 degrees, one diagonal line of each square protruding block is parallel to the axial direction of the roller bar, the other diagonal line of each square protruding block is perpendicular to the axial direction of the roller bar, paint used in the friction increasing coating are WC-TiC-Co cemented carbide powder, and the spraying method is heat spraying. According to the heat treatment feeding roller bar, the shortcoming that in the prior art, the feeding speed is low due to slipping caused by small friction force is overcome by increasing the surface friction force of the roller bar, and the feeding efficiency is improved.