2results about How to "Improve forming rate" patented technology

The application discloses a current-carrying friction processing method for preparing a gradient nanocrystalline structure layer on a metal coating surface, relates to the technical field of metal coating processing, and comprises the following steps: preparing a metal coating on the surface of a base body, polishing the metal coating with sandpaper, and cleaning the surface; connecting the metal coating to direct current, and performing current-carrying friction treatment on the whole region to be processed; different current voltages and grinding processes are adopted for different metal coating materials; the synergistic effect of an electric system and a friction system is utilized to make the crystal grains of the metal coating generate high-density dislocations, stacking faults, atomic rearrangement, intergranular thermal effects and the like at a microscale, so that the coarse crystal grains are converted into fine crystal grains, and the metal coating surface obtains a gradient nanocrystalline; and the application can realize the preparation of a large-area, high-forming-rate and structure-clear gradient nanocrystalline structure layer. The application solves the problems of complex process, low forming rate and structure ambiguity in the traditional preparation of a gradient nanocrystalline structure layer.