ISO 16859-3:2015《金属材料 里氏硬度试验 第3部分:标准硬度块的标定》国际标准(英文版)_硬度标准_技术_沈阳天星试验仪器股份有限公司
ISO 16859-3:2015《金属材料 里氏硬度试验 第3部分:标准硬度块的标定》国际标准(英文版)

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ISO 16859-3 Metallic materials — Leeb hardness test — Part 3: Calibration of reference test blocks


ISO 16859 consists of the following parts, under the general title Metallic materials —— Leeb hardness test:

ISO 16859-1 Metallic materials — Leeb hardness test — Part 1: Test method

ISO 16859-2 Metallic materials — Leeb hardness test — Part 2: Verification and calibration of the testing devices

ISO 16859-3 Metallic materials — Leeb hardness test — Part 3: Calibration of reference test blocks



Contents


Foreword

1 Scope

2 Normative references

3 Manufacture of reference test blocks

4 Calibration machine

  4.1 General

  4.2 Traceability

  4.3 Requirements on calibration machines

  4.4 Calibration of calibration machines

5 Calibration procedure

6 Number of test indentations

7 Uniformity of hardness

8 Marking

9 Validity

Annex A (normative) Requirements for Leeb hardness calibration machines

Annex B (informative) Measurement uncertainty of reference test block

Annex C (informative) Examples of reference test block

Bibliography


1 Scope

This part of ISO 16859 specifies a method for the calibration of reference test blocks that are used for the indirect verification of Leeb hardness testers according to ISO 16859-2 and for the periodic checking according to ISO 16859-1.

The procedures necessary to ensure metrological traceability of the calibration machine are also specified.


2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 16859-1, Metallic materials — Leeb hardness test — Part 1: Test method

ISO 16859-2, Metallic materials — Leeb hardness test — Part 2: Verification and calibration of the testing devices

ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories





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