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真空热处理:将工件放置在真空度低于1×105 Pa(通常是10-1～10-3 Pa)的环境中加热的热处理工艺。零件经真空热处理后,畸变小,质量高,且工艺本身操作灵活,无公害。因此真空热处理不仅是某些特殊合金热处理的必要手段,而且在一般工程用钢的热处理中也获得应用,特别是工具、模具和精密耦件等,经真空热处理后使用寿命较一般热处理有较大的提高。例如某些模
Vacuum heat treatment: A heat treatment process that places a workpiece in an environment where the degree of vacuum is less than 1 × 10 5 Pa (usually 10 -1 to 10 -3 Pa). Parts after vacuum heat treatment, distortion, high quality, and process itself flexible operation, pollution-free. Therefore, vacuum heat treatment is not only necessary for the heat treatment of some special alloys, but also applied in the heat treatment of general engineering steel, especially the tools, dies and precision couplings. The heat treatment after vacuum heat treatment has a larger service life than the ordinary heat treatment Improve. For example, some models