标准摘要
[中文适用范围]： 本文件规定了根据 ISO 6506-1 确定布氏硬度的试验机的直接和间接验证方法，并规定了何时必须执行这两种类型的验证。 直接验证涉及检查各个机器性能参数是否在指定范围内，而间接验证则利用根据 ISO 6506-3 校准的参考块的硬度测量来检查机器的整体性能。 如果测试机还用于其他硬度测试方法，则必须针对每种方法进行独立验证。 本文件适用于固定位置和便携式硬度测试机。 对于无法满足规定的力-时间曲线的机器，可以使用附录 B 修改力和测试周期的直接验证。 [外文原描述]： ISO 6506-2:2017 specifies methods of direct and indirect verification of testing machines used for determining Brinell hardness in accordance with ISO 6506‑1 and also specifies when these two types of verification have to be performed. The direct verification involves checking that individual machine performance parameters fall within specified limits whereas the indirect verification utilizes hardness measurements of reference blocks, calibrated in accordance with ISO 6506‑3, to check the machine's overall performance. If a testing machine is also to be used for other methods of hardness testing, it has to be verified independently for each method. ISO 6506-2:2017 is applicable to both fixed location and portable hardness testing machines. For machines that are incapable of satisfying the specified force-time profile, the direct verification of force and testing cycle can be modified by the use of Annex B.
英文名称Metallic materials — Brinell hardness test — Part 2: Verification and calibration of testing machines