标准摘要
[中文适用范围]： 本文件规定了根据 ISO 4545-1 确定金属材料努氏硬度的试验机的验证和校准方法。 规定了试验机、压头和对角线长度测量系统的直接验证和校准方法。 规定了使用参考块的间接验证方法来对机器进行整体检查。 如果试验机还用于其他硬度测试方法，则将对每种方法进行独立验证。 [外文原描述]： ISO 4545-2:2017 specifies the method of verification and calibration of testing machines for determining Knoop hardness for metallic materials in accordance with ISO 4545‑1. A direct method of verification and calibration is specified for the testing machine, indenter, and the diagonal length measuring system. An indirect verification method using reference blocks is specified for the overall checking of the machine. If a testing machine is also to be used for other methods of hardness testing, it will be verified independently for each method.
英文名称Metallic materials — Knoop hardness test — Part 2: Verification and calibration of testing machines