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JJG 450-2016 English PDF

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JJG 450-2016: Fruits Hardness Testers
Status: Valid

JJG 450: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 450-2016	English	329	Add to Cart	3 days [Need to translate]	Fruits Hardness Testers	Valid	JJG 450-2016
JJG 450-1986	English	279	Add to Cart	3 days [Need to translate]	Verification regulation of fruit pressure tester	Obsolete	JJG 450-1986

PDF similar to JJG 450-2016

Standard similar to JJG 450-2016

GB/T 36126 JJG 475 GB/T 1885 JJG 159 JJG 166 JJG 126

Basic data

Standard ID	JJG 450-2016 (JJG450-2016)
Description (Translated English)	Fruits Hardness Testers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Word Count Estimation	14,184
Date of Issue	2016-11-30
Date of Implementation	2017-05-30
Older Standard (superseded by this standard)	JJG 450-1986
Regulation (derived from)	State Administration of Quality Supervision, Inspection and Quarantine Notice No.119 of 2016
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJG 450-2016: Fruits Hardness Testers

---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.
Fruits Hardness Testers National Metrological Verification Regulation of the People's Republic of China Fruit hardness tester 2016-11-30 release 2017-05-30 implementation State Administration of Quality Supervision, Inspection and Quarantine issued Verification test of fruit hardness tester HardnessTesters Replacing JJG 450-1986 Unit. National force hardness measurement technology committee The main drafting unit. Guangdong Institute of Metrology China Institute of Metrology Liaoning Institute of Metrology Shiyan City metrological verification test Participated in the drafting unit. Quanzhou, Fujian Quanzhou Donghai instrument hardness block factory This procedure entrusts the National Strength Hardness Metrology Technical Committee to explain The main drafters of this procedure. HE Guang-lin (Guangdong Institute of Metrology) Ye Ming (China Institute of Metrology) Liu Wei (Liaoning Institute of Metrology) Zhang guohui (Shiyan city measurement test test) Participate in the drafters. Chen Jun pay (Fujian Quanzhou Fengze Donghai instrument hardness block factory)

Introduction (II) 1 Scope (1) 2 References (1) 3 Overview (1) 4 Measurement performance requirements (1) 4.1 Pressure head surface condition (1) 4.2 Hardness of indenter (1) 4.3 Geometry of the indenter (1) 4.4 Test force (2) 5 General technical requirements (3) 5.1 appearance (3) 5.2 indicating device (3) 5.3 Spindle measuring rod (3) 5.4 bracket (3) 6 Metering device control (3) 6.1 Environmental conditions (3) 6.2 Assurance apparatus (3) 6.3 Test items (4) 6.4 Test method (4) 6.5 Processing of test results (6) 6.6 Verification cycle (6) Appendix A Fruit Hardness Tester Verification Record Format (7) Appendix B Fruit Hardness Tester Certificates Inside Page Format (8) Appendix C Fruit Hardness Tester Verification Result Notification Page Format (9)

Introduction

In accordance with JJF1001-2011 "General measurement terms and definitions", JJF1011-2006 "force and hard Metrological terminology and definition "and JJF1002-2010" National metrological verification rules for the preparation of rules "given the rules Drafted. This procedure replaces JJG 450-1986 "Fruit Hardness Tester". Compared with JJG 450-1986, the main technical procedures The changes are as follows. --- increased the introduction; Reference to GB/T 4340.1 "Vickers Hardness Test for Metallic Materials Part 1. Test Methods" (see 6.4.7); --- According to the use of fruit hardness, increase the vertebral HFco, hemisphere HFhe, the column HFcy three Type of extension, which extends the scope of application (see Chapter 3); --- extended the original two indenter size, increased to 14 indenter size (see Table 1); --- increase the basic pattern of indenter (see Table 1); --- refinement of the original test force 3 division, increased to 4 (see Table 2); - Increased test force indicating part of the pointer and the minimum indexing or resolution requirements (see 5.2.1 and 5.2.3); --- increase the hardness of the first test, follow-up test, the use of inspection requirements (see 6.3); --- the pressure head size of the three cross-section measurement times, to 2 cross-section measurement times, an increase of the pressure head geometry Calculation formula (see 6.4.2); - change the relative error of the test force to absolute deviation and give the formula (see 6.4.7); --- Change the testing period to 1 year (see 6.6); --- Added Appendix A; - Added Appendix C; --- delete the special inspection plan. The procedures in the development process to fully consider the NY/T.2009-2011 "Determination of fruit hardness" in the relevant Technical requirements, technical specifications and test methods. The previous release of this order is. --- JJG 450-1986. Verification test of fruit hardness tester

1 Scope

This procedure applies to hand-held or with a fixed bracket of the hardness of the first test, follow-up test and use an examination.

2 reference file

This procedure refers to the following documents. JJG 144 standard dynamometer Metallic materials - Vickers hardness test - Part 1. Test methods GB/T For dated references, only the dated edition applies to this rule; references that are not dated , The latest version (including all amendments) applies to this procedure.

3 Overview

Fruit hardness tester (hereinafter referred to as hardness) for a variety of melon, fruit and other hardness determination, mainly by the indenter, the bomb Spring, indicating device part. The test principle is. a certain diameter, shape of the indenter, pressed into the fruit surface to the rules The depth of the measurement is indicated by the indicating body. Use HF to indicate fruit hardness. Press the head shape, there are vertebral HFco, hemispherical HFhe, column HFcy three Type. See Table 1, Table 2.

4 Measurement performance requirements

4.1 Pressure head surface condition The center point of the top of the indenter shall be on the axis of the spindle measuring rod and the overall surface of the indenter shall be smooth and its surface roughness Ra? 1.6 m. 4.2 hardness of the indenter The indenter should have a certain hardness to meet the durability of the durometer. The hardness of the indenter is. ≥300HV1 4.3 The geometry of the indenter The geometric dimensions of the indenter shall comply with the requirements of Table 1. Table 1 Compression Geometry Parameters and Applicable Categories Indentation symbol graphic geometry applicable category HFco α 58.93 ° ± 2 ° d ≤ 1.0mm D (11.3 0-0.2) mm L ≥ 10mm Fruit (flesh with fruit shells Or peel) hardness. Such as. Pineapple, jackfruit, watermelon, Pumpkin, mangosteen, sugar cane and so on

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