The appearance and development of surface coating technology is mainly due to the appearance and development of CNC tools. Coating can significantly improve the hardness of the tool, reduce friction, improve cutting efficiency and service life. Therefore, coating technology is used in more than 80% of all kinds of carbide numerical control tools. In addition, routine maintenance is also important. After using the tool for a period of time, the user can polish, clean and apply antirust oil regularly.<br>
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