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JJF 1312-2011 English PDF

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JJF 1312-2011: Calibration Specification for Shore AO Durometers
Status: Valid

JJF 1312: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1312-2011	English	329	Add to Cart	3 days [Need to translate]	Calibration Specification for Shore AO Durometers	Valid	JJF 1312-2011
JJF 1312-1990	English	199	Add to Cart	2 days [Need to translate]	O.T.N. of Primary Standard for Total Luminous Flux	Obsolete	JJF 1312-1990

PDF similar to JJF 1312-2011

Standard similar to JJF 1312-2011

GB/T 36126 JJF 1368 GB/T 1885 JJF 1315.1 JJF 1315.2 JJF 1311

Basic data

Standard ID	JJF 1312-2011 (JJF1312-2011)
Description (Translated English)	Calibration Specification for Shore AO Durometers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Classification of International Standard	17.100
Word Count Estimation	14,160
Date of Issue	2011-09-20
Date of Implementation	2011-12-30
Quoted Standard	GB/T 531.1-2008; GB/T 4340.1-2009; ISO 18898-2006; ISO 21509-2006
Regulation (derived from)	AQSIQ Announcement No. 153 of 2011
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to AO Shore hardness tester calibration.

JJF 1312-2011: Calibration Specification for Shore AO Durometers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Shore AO Durometers People's Republic of China National Metrology Technical Specifications AO Shore hardness tester calibration specification Issued on. 2011-09-20 2011-12-30 implementation The State Administration of Quality Supervision, Inspection and Quarantine released AO Shore hardness tester calibration specification This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on September 20, 2011, and from From December 30, 2011 into effect. Focal point. the National Technical Committee on Metering hardness force value Main drafting unit. Guangdong Institute of Metrology Kunshan Innovative Testing Technology Co., Ltd. Participated in the drafting unit. Shanghai Six Ling Instrument Factory This specification entrust national force value hardness measurement technical committee responsible for the interpretation The main drafters of this specification. Chen Minghua (Guangdong Institute of Metrology) Taoze Cheng (Kunshan Innovative Testing Technology Co., Ltd.) Drafters participate. He Guanglin (Guangdong Institute of Metrology) Left dimension (Shanghai Six Ling Instrument Factory)

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 Metrological characteristics (1) 4.1 Appearance (1) 4.2 indicating means (2) 4.3 pressure needle projecting length (2) 4.4 needle pressing surface conditions (2) 4.5 spherical indenter (2) 4.6 indenter hardness (2) 4.7 pressure foot geometry (2) 4.8 test force (3) Calibration Condition 5 (3) Environmental conditions 5.1 (3) 5.2 Calibration Equipment (3) 6 calibration items and calibration methods (3) 6.1 Appearance inspection and general technical requirements (3) 6.2 pressure needle projecting length (3) 6.3 needle pressing surface conditions (4) 6.4 spherical indenter (4) 6.5 indenter hardness (4) 6.6 pressure foot geometry (4) 6.7 test force (4) Expression 7 calibration results (4) 8 Recalibration interval (5) Appendix A AO Shore hardness test force deviation measurement uncertainty analysis (6) Appendix B AO Shore hardness tester calibration records (7) Appendix C AO Shore hardness tester calibration certificate-page format (8) AO Shore hardness tester calibration specification

1 Scope

This instruction applies to AO Shore hardness calibration.

2 Citations

This specification references the following documents. GB/T 531.1-2008 vulcanized rubber or thermoplastic rubber indentation hardness test methods - Part 1. Shao Durometer method (Shore hardness) (ISO 7619-1.2004, IDT) GB/T 4340.1-2009 metallic materials - Vickers hardness test - Part 1. Test method (ISO 6507-1. 2005, MOD) ISO 18898.2006 Rubber-Calibrationandverificationofhardnesstesters ISO 21509.2006 Plasticsandebonite-VerificationofShoredurometers When using this specification it should be noted that using the currently valid version of the documents cited.

3 Overview

AO Shore hardness tester for measuring the hardness of vulcanized rubber and thermoplastic rubber of low hardness and other materials. A type Shore hardness tester is suitable for hardness measurement is generally believed that A-type hardness meter range (20 ~ 90) HA; when A Durometer measured value is less than 20HA, AO type should be used to measure hardness; when A hardness measured value is high Upon 90HA, should be used in D-type hardness meter. Another AM durometer is suitable for measuring thin and small samples. AO Shore hardness mainly by the pressure applying mechanism needle, presser foot, test force, pressure needle projecting length measuring mechanism, Part of the indicating device and the like. AO Shore hardness test is the basic principle of a predetermined shape and hardness indenter, under the test force pushed The specimen surface, and when the presser foot flat sample surface of bonding closely, measuring the relative pressure needle pressure foot extension length of the plane. AO Shore hardness in value according to formula (1) is calculated. H = 100- l0.025 (1) Where. H --- hardness; l --- pressure needle extension length, mm. AO test force and Shore hardness values should be consistent with the formulas (2) Relationship. F = 550 75H (2) Where. F --- AO Shore hardness test force, mN;

4 Metrological characteristics

4.1 Appearance Hardness due on the nameplate or logo, indicating the hardness tester model, serial number, manufacturer, etc. Exterior surface hardness

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