Polishing operation must pay attention to some issues. 1. Polishing must be done in a clean and dust-free room. Because hard dust particles can contaminate the abrasive material and damage the surface of the mold that is already close to completion. 2. Use only one grade of polishing drill plaster per polishing tool and store it in a dustproof or sealed container. 3. When converting a finer level of grit, pay attention to whether the level completely covers the previous level (coarser) grit pattern, and you must clean your hands and workpiece. 4. Start polishing by dealing with corners, edges and rounded corners, which are more difficult to polish. 5. Special care should be taken when dealing with sharp corners and edges, be careful not to form rounded corners or rounded edges, and try to use harder polishing tools for die grinding and oil stone polishing. The polishing machine is composed of basic components such as base, throwing disc, polishing fabric, polishing cover and cover. It is also important that the polishing damage layer does not affect the ultimate observed tissue, i.e. it does not cause false tissue. Also should make the specimen self-rotating and move back and forth along the radius direction of the turntable, in order to avoid local wear and tear of polishing fabric too fast in the polishing process to constantly add micro-powder suspension, so that the polishing fabric to maintain a certain humidity. Electric idea fixed in the base, fixed polishing disc with the cone sleeve through the screw and the electric idea shaft connected. In order to achieve the purpose of coarse polishing, requires a low rotational speed of the turntable, preferably not more than 500r/min; polishing time should be longer than the time required to remove scratches, due to also remove the deformation layer. Polishing fabric through the collar fastened in the polishing disc, the electric idea through the switch on the base of the power to start, then you can apply pressure on the specimen by hand in the rolling polishing disc long polishing. Rough polishing purpose is to remove the abrasive damage layer, this stage should have the maximum polishing rate, rough polishing formation of surface damage is a secondary consideration, but also should be as small as possible; followed by fine polishing (or final polishing), the purpose is to remove the surface damage generated by rough polishing, so that ultrasonic mold polishing machine polishing damage to a minimum. Polishing cover and cover can prevent ash and other debris in the machine is not in use when falling on the polishing fabric and affect the use of the effect. The best way to solve this contradiction is to polish in two stages. The pivot of the polishing machine manipulation is to get the idea of the maximum polishing rate in order to remove the damage layer generated when polishing as soon as possible. Fine polishing when the turntable speed can be appropriate progress, polishing time to throw off the rough polishing damage layer is appropriate.  

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