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介绍两种金属干式切削法：高速干式切削法和低温冷风切削法。与湿式切削法相比，干式切削不但提高生产效率，降低加工成本，而且有利于保护环境，节约自然资源。随着环保意识日益提高，人们越来越重视各种节能技术，干式切削有着广阔的推广应用前景。
Describes two kinds of metal dry cutting method: high-speed dry cutting method and low-temperature cold-air cutting method. Compared with the wet cutting method, the dry cutting not only improves the production efficiency and reduces the processing cost, but also helps to protect the environment and save the natural resources. With the increasing awareness of environmental protection, people pay more and more attention to various energy-saving technologies, and dry cutting has broad prospects for popularization and application.