The process roll is widely used in all cold rolling units and generally work in the atmospheric environment, mainly including: turning roll, correction roll, tension roll, tension meter roll, loop back roll, etc., and it is mainly used for transmission, correction and tension adjustment of strip, therefore, it is required that the roll surface shall have good wear resistance and tension retention performance, etc. the roll surface is in direct contact with the strip, therefore, the coating surface properties will directly affect the quality of the strip. To meet the needs of process roll surface of different cold rolling units and different locations, Anhui Taier Surface Engineering Technology Co., Ltd. adopts advanced HVOF and post-treatment technology of coating to obtain the characteristics from mirror surface to the process roll surface with high roughness. Advanced technology ensures that the roller has excellent wear resistance and roughness retention performance, and properly solves the problem of adhesion of foreign matter on the roll surface, thus meeting the user’s requirements for high cost performance, long service life, high efficiency and high quality of the process roll.