表面粗糙度,是指零件加工表面所具有的较小间距和微小峰谷不平度的微观几何形状误差。表面粗糙度对机械零件的配合性质、耐磨性、工作精度、抗腐性等有着密切的关系,对机器或仪器的性能、可靠性和寿命有很大的影响。表面粗糙度国家标准一共有六个表面粗糙度评定参数。本文仅就这些评定参数及其数值的正确选用,以及测量等方面作一介绍。 Surface roughness, refers to the surface of the part with a smaller pitch and the micro-roughness of the micro-geometric errors. Surface roughness of the mechanical parts with the nature of the joint, wear resistance, precision, corrosion resistance is closely related to the performance of the machine or instrument, reliability and life expectancy have a great impact. Surface roughness of a total of six national standards for surface roughness assessment parameters. This article only on the evaluation of these parameters and the correct choice of values, as well as measurement and other aspects of an introduction.