What is the tool passivation? Through the tool for deburring, leveling, polishing processing, so as to improve the quality of the tool and extend the service life. After the fine grinding of the tool, a process before the coating, its name is not yet unified at home and abroad, known as "cutting edge passivation", "cutting edge strengthening", "cutting edge honing", "cutting edge preparation" and so on. Why Do Tool Passivation? After being sharpened by ordinary grinding wheel or diamond grinding wheel, there are different degrees of micro-notch (I. e., micro-chipping and saw). In the cutting process, the micro gap of the cutting edge is easy to expand, which accelerates the tool wear and damage. Modern high-speed machining and automatic machine tools put forward higher requirements for tool performance and stability, especially the coating tool needs to be passivated before coating to ensure the firmness and service life of the coating. Purpose of tool passivation Edge passivation technology, its purpose is to solve the grinding tool edge micro gap defects, so that its front value to reduce or eliminate, to achieve smooth, both sharp and durable purpose. The main effects of tool passivation are: Rounding of cutting edge: remove the burr of cutting edge and achieve accurate and consistent rounding. Cutting edge burrs lead to tool wear, the surface of the workpiece will become rough, after passivation, the cutting edge becomes very smooth, greatly reduce the chipping, the surface finish of the workpiece will be improved. Uniform polishing of tool grooves improves surface quality and cutting performance. The smoother the surface of the groove, the better the chip removal and the higher the cutting speed. At the same time, after the surface quality is improved, the risk of the tool and the processing material seizing is also reduced. And can reduce the cutting force by 40%, cutting more smoothly. Polishing of coatings The protruding droplets produced after the removal of the tool coating improve the surface finish and increase the adsorption of lubricating oil. After the coating of the tool surface will produce some tiny protruding droplets, improve the surface roughness, making the tool in the cutting process is easy to produce large friction heat, reduce the cutting speed. After passivation and polishing, the droplets are removed, leaving many small holes, which can absorb more cutting fluid during processing, so that the heat generated during cutting is greatly reduced, and the speed of cutting can be greatly improved.