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JJF 1475-2014 English PDF

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JJF 1475-2014: Calibration Specification for Spring Hammers
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PDF similar to JJF 1475-2014


Standard similar to JJF 1475-2014

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Basic data

Standard ID JJF 1475-2014 (JJF1475-2014)
Description (Translated English) Calibration Specification for Spring Hammers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.100
Word Count Estimation 16,199
Date of Issue 8/25/2014
Date of Implementation 11/25/2014
Quoted Standard GB/T 2423.55-2006
Regulation (derived from) People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine Notice 2014 (No. 95); AQSIQ Notice 2014 No. 95
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to the impact energy of (0. 20 ~ 2. 00) J spring impactor calibration.

JJF 1475-2014: Calibration Specification for Spring Hammers

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Calibration Specification for Spring Hammers People's Republic of China National Metrology Technical Specifications Spring impactor calibration specification Issued on. 2014-08-25 2014-11-25 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Spring impactor calibration specification SpringHammers Focal point. the National Technical Committee on Metering hardness force value Main drafting unit. Beijing Aerospace Institute of Measurement and Testing Technology Zhejiang Dacheng Electric Co., Ltd. Shenzhen Academy of Metrology and Quality Inspection Measurement and Testing Institute in Suzhou City Participated in the drafting unit. Jiangsu Province Institute of Metrology Anhui Institute of Metrology This specification entrust national force value hardness measurement technical committee responsible for the interpretation The main drafters of this specification. Wang tris (Beijing Aerospace Measurement and Testing Technology Research Institute) Mei Hongwei (Beijing Aerospace Measurement and Testing Technology Research Institute) Liu Sheng (Zhejiang Dacheng Electric Co., Ltd.) Huangshi Yuan (Shenzhen Quality Inspection Institute of Metrology) Yao Ming (Suzhou City Metrology Institute) Drafters participate. Liu Wei (Jiangsu Province Institute of Metrology) Xu Guang (Anhui Institute of Metrology)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Terms (1) 4 Overview (1) 5 Metrological characteristics (1) Hammerhead spherical radius 5.1 (1) 5.2 release force (2) Indent 5.3 hammer vertex distance (2) 5.4 Impact Energy Indication (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 Calibration with standard equipment (2) 7 calibration items and calibration methods (2) Hammerhead spherical radius 7.1 (2) 7.2 release force (2) Indent 7.3 hammer vertex distance (2) 7.4 Impact Energy Indication (2) 8 calibration results expression (3) 9 Recalibration interval (4) Appendix A spring impactor calibration reference the original record format (5) Appendix B of the spring shock calibration Uncertainty Evaluation Method and Case (7)

Introduction

This specification "National Calibration Specifications writing rules," according to JJF 1071-2010, JJF 1001-2011 "Tong Metering terms and definitions ", JJF 1059.1-2012" Evaluation and Expression of Uncertainty in Measurement write "Rules. This specification in the development process to fully consider the national standard GB/T 2423.55-2006 "ring electric and electronic products Environmental test - Part 2. Test methods - Test Eh. Hammer tests ", IEC 60068-2-75" Environmental testing-Part 2-75. Tests, TestEh. Hammertests ", this specification gives the meter calibration spring impactor Quantity characteristics calibration conditions, calibration items and calibration methods. This specification is the first release. Spring impactor calibration specification

1 Scope

This standard applies to the impact energy is (0.20 ~ 2.00) J spring impactor calibration. 2. References This specification references the following technical documents. GB/T 2423.55-2006 Environmental testing for electric and electronic products Part 2. Test methods - Test Eh. Hammer Hit test For dated references, only the dated edition applies to this calibration practices; undated references the File, the latest edition (including any amendments) applies calibration specification.

3 Terms

Impact energy impactenergy When spring horizontal impactor, the impact energy during impact element released.

4 Overview

Spring impactor is an electrical and electronic equipment and accessories, and similar devices used, according to the predetermined direction, energy And the number of times the test apparatus impact. Impactor spring by the impact member, a spring-loaded release mechanism and shell and other components, as shown in FIG. 1- release cone; 2- cone spring release; 3 - release lever; 4- Release spring; 5- Release key; 6- operating button; 7- hammer; 8- hammer spring; 9- hammer

1 spring impactor Schematic diagram

5 Metrological characteristics

5.1 hammerhead spherical radius Hammerhead spherical radius of 10mm ± 0.2mm.

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