国产v日韩v欧美v精品专区_日韩动漫无码一区二区_国产 乱子伦 在线_午夜福利一本电影_亚洲精品欧美日韩视频_中日韩av毛片一区二区_国产超级在线观看视频_忍着娇喘人妻被中出中文字幕_日本久久久动作视频免费_一级特黄特色的免费大片

ISO 6507-3:2018《金屬材料 維氏硬度試驗(yàn) 第3部分：標(biāo)準(zhǔn)硬度塊的標(biāo)定》國際標(biāo)準(zhǔn)（英文版）

INTERNATIONAL STANDARD ISO 6507-3:2018ISO 6507-3_2018.jpg


Metallic materials — Vickers hardness test —

Part 3:

Calibration of reference blocks


ISO 6507 consists of the following parts, under the general title Metallic materials —— Vickers hardness test:

ISO 6507-1 Metallic materials —— Vickers hardness test Part 1: Test method

ISO 6507-2 Metallic materials —— Vickers hardness test Part 2: Verification and calibration of testing machines and indenters

ISO 6507-3 Metallic materials —— Vickers hardness test Part 3: Calibration of refernce blocks

ISO 6507-4 Metallic materials —— Vickers hardness test Part 4: Table of hardness values


替代情況：替代 ISO 6507-3：2005


Contents


Foreword 

1 Scope 

2 Normative references 

3 Terms and definitions 

4 Manufacture of reference blocks

5 Calibration machine

6 Calibration procedure

7 Number of indentations

8 Uniformity of hardness

9 Marking 

10 Calibration certificate 

11 Validity 

A Uncertainty of the mean hardness value of hardness reference blocks

Annex B (informative) Adjustment of K?hler illumination systems 

Bibliography


1 Scope


This document specifies a method for the calibration of reference blocks to be used for the indirect verification of Vickers hardness testing machines, as specified in ISO 6507-2.

The method is applicable only for indentations with diagonals ≥0,020 mm.


2 Normative references


The following docuents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 376, Metallic materials — Calibration of force-proving instruments used for the verification of uniaxial testing machines

ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method

ISO 6507-2, Metallic materials — Vickers hardness test — Part 2: Verification and calibration of testing machines


3 Terms and definitions


No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/

— ISO Online browsing platform: available at http://www.iso.org/obp





在線閱讀            免費(fèi)下載
contentHeight = $(".newsContent").height(); if(contentHeight < 615){ contentHeight = 615; }