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GB/T 2423.55-2023: Environmental testing - Part 2: Test methods - Test Eh: Hammer tests
Status: Valid GB/T 2423.55: Evolution and historical versions
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Environmental testing - Part 2: Test methods - Test Eh: Hammer tests
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GB/T 2423.55-2023
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Environmental testing for electric and electronic products - Part 2: Test method - Test Eh: Hammer tests
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Basic data | Standard ID | GB/T 2423.55-2023 (GB/T2423.55-2023) | | Description (Translated English) | Environmental testing - Part 2: Test methods - Test Eh: Hammer tests | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 19.040 | | Word Count Estimation | 30,343 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 2423.55-2006 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | GB/T 2423.55-2023: Environmental testing - Part 2: Test methods - Test Eh: Hammer tests---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.
ICS 19.040
CCSK04
National Standards of People's Republic of China
Replace GB/T 2423.55-2006
Environmental testing Part 2.Test methods
Test Eh. Hammer test
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 General rules for hammer test methods 2
4.1 Severity level 2
4.2 Test device 2
4.3 Preprocessing 4
4.4 Initial detection 4
4.5 Test 4
4.6 Recovery 4
4.7 Final inspection 4
4.8 Information to be provided on the specification4
5 Test Eha. Pendulum 5
5.1 Test device 5
5.2 Drop height 6
5.3 Test 6
6 Test Ehb. Spring Hammer 6
6.1 Test device 6
6.2 Effect of Gravity7
6.3 Calibration 7
7 Test Ehc. vertical falling weight 7
7.1 Test device 7
7.2 Drop height 7
Appendix A (normative) Shape of impact element 8
Appendix B (normative) Calibration of spring hammer 12
B.1 Calibration Principle 12
B.2 Structure of calibration device12
B.3 Calibration method of calibration device12
B.4 Use of calibration device 13
Appendix C (Informative) Guideline 17
C.1 Scope of application of hammer test 17
C.2 Selection of test equipment17
C.3 Selection of severity level17
C.4 Test related information17
Appendix D (informative) Pendulum test device example 18
Appendix E (informative) Spring hammer test device 21
Appendix NA (informative) GB/T 2423 constituent documents 22
Reference 25
Figure 1 Typical schematic diagram of impact element 3
Figure 2 Measuring point 5
Figure 3 Release end shape of 2J7
Figure A.1 Example of impact elements less than or equal to 1J8
Figure A.2 Example 8 of impact element of 2J
Figure A.3 Example 9 of impact element of 5J
Figure A.4 Example of 10J impact element 9
Figure A.5 Example of 20J impact element10
Figure A.6 Example of 50J impact element11
Figure B.1 Calibration device 13
Figure B.2 Pendulum “c” 14
Figure B.3 Steel spring for pendulum “c”14
Figure B.4 Part of the calibration device15
Figure B.5 Calibration diagram of calibration device 16
Figure B.6 Index plate “f” 16
Figure D.1 Pendulum test device18
Figure D.2 Impact element of a pendulum with energy less than or equal to 1J19
Figure D.3 Sample mounting base 19
Figure D.4 Conversion installation of embedded switch 20
Figure D.5 Lamp holder conversion installation 20
Figure E.1 Spring hammer test device 21
Table 1 Impact element characteristics 3
Table 2 Drop height 6
Table C.1 Theoretical values of energy levels17
Table E.1 Kinetic energy of impact elements21
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document is Part 55 of GB/T 2423.The published parts of GB/T 2423 are shown in Appendix NA.
This document replaces GB/T 2423.55-2006 "Environmental testing of electrical and electronic products - Part 2.Test methods Test Eh. Hammering
"Test", compared with GB/T 2423.55-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The test parameter value setting and its continuity considerations have been changed (see 4.1.2, Table 1 and Table 2);
b) The terms and definitions have been changed, and the terms of different types of comparable test devices are collectively expressed to reflect standardization and uniformity (see
Chapter 3, 3.1, 4.1 and 5.1 of the.2006 edition);
c) Added a description of the installation requirements in the hammer test “Care should be taken to ensure that there is no obvious air gap between this layer of nylon and the support.
gap. ” (See 4.2.2, 3.3.2 of the.2006 edition);
d) Changed the description of the impact element in the vertical drop weight test device (see 7.1, 6.2 of the.2006 edition);
e) Added further provisions and example descriptions of the surface and internal structures of basic test device elements (see Figures 1, 2 and
Figure E.1);
f) The applicable scope of the basic test device components has been changed (see 6.1, Figure D.2, 5.1, Figure D.2 of the.2006 edition);
g) Added more accurate instructions and labels for the structure and location of the test device in the pictures (see Appendix A, Appendix B and Appendix E
legend).
This document is equivalent to IEC 60068-2-75.2014 "Environmental Testing Part 2-75.Test Test Eh. Hammer Test".
This document has made the following minimal editorial changes.
a) Added an informative appendix "Constituting Documents of GB/T 2423" (see Appendix NA).
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Standardization Technical Committee on Environmental Conditions and Environmental Testing of Electrical and Electronic Products (SAC/TC8).
This document was drafted by. China Saibao (East China) Laboratory, Shanghai Institute of Quality Supervision and Inspection Technology, Ministry of Industry and Information Technology Electronics
The Fifth Research Institute, Jiangsu Ruilan Automation Equipment Group Co., Ltd., Wuhu Saibao Information Industry Technology Research Institute Co., Ltd., Guangzhou Saibaoton
Rui Information Technology Co., Ltd., Shanghai Taifeng Testing and Certification Co., Ltd.
The main drafters of this document. Xu Yi, Xie Mingzhen, Yang Jianfeng, Wang Weihua, Wang Tingting, Wang Miao, Xiao Yi, He Dong, and Ling Wei.
The previous versions of this document and the documents it replaces are as follows.
---First published as GB/T 2423.55-2006 in.2006;
---This is the first revision.
Introduction
Impact testing of electrical equipment using different hammers may produce mechanical stress. For the purpose of standardization, the results of the test are not
Depending on the type of test apparatus that should be used, this document describes the characteristics of various test hammers designed to approximate as closely as possible the same severity level.
The severity level is usually selected from GB/T 4796.1.
For harmonization, it is necessary to change some basic parameters of the tests Ef. impact pendulum and Eg. impact spring hammer. in all cases
Below, both sets of parameters are given at appropriate locations in the text. Although some quantities are no longer recommended, they remain as alternatives for continuity reasons.
value due to their use as historical references in certain industries.
GB/T 2423 includes basic information on environmental tests and their severity levels, and specifies the atmospheric conditions for various measurements and tests.
It is used to evaluate the working ability of test samples under expected transportation, storage and various usage environments. Each document of GB/T 2423 is introduced separately.
A set of experiments and applications. GB/T 2423 aims to provide product specifiers and product testers with a series of unified and repeatable environments.
Environmental climatic, mechanical and combined tests, and includes standard atmospheric conditions for measurements and tests.
Since 1981, GB/T 2423 has issued more than 50 documents (49 current national standards, 41 of which adopt
IEC 60068-2 "Environmental Testing Part 2.Testing"). See Appendix NA for details of the constituent documents of GB/T 2423.
Environmental testing Part 2.Test methods
Test Eh. Hammer test
1 Scope
This document describes the procedures for impacting samples under specified severity levels including the number, energy, and direction of impact.
Three equivalent test methods. Used to evaluate the robustness of products in terms of electrical safety.
This document applies to tests at energy levels from 0.14J to 50J.
This document gives three devices suitable for testing. Appendix C provides guidance in this regard.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
Note. GB/T 3934-2003 Technical conditions for ordinary thread gauges (ISO 1502.1996, MOD)
Part 2.Rockwelhardness)
Note. GB/T 3398.2-2008 Plastic hardness determination Part 2.Rockwell hardness (ISO 2039-2.1987, IDT)
Vocabulary)
Note. GB/T 2298-2010 Mechanical vibration, impact and condition monitoring vocabulary (ISO 2041.2009, IDT)
ISO 2768-1 General tolerances Part 1.Tolerances on linear and angular dimensions without independent tolerance indications (Generaltolerances-
Note. GB/T 1804-2000 general tolerances do not specify tolerances for linear and angular dimensions (ISO 2768-1.1989, IDT)
ISO 6508 (all parts) Rockwell hardness test of metallic materials (Metalicmaterials-Rockwelhardnesstest)
Note. GB/T 230 (all parts) Rockwell hardness test of metallic materials [ISO 6508 (all parts)]
guidance)
Note. GB/T 2421-2020 Environmental Testing Overview and Guidelines (IEC 60068-1.2013, IDT)
Note. GB/T 4796.1-2017 Environmental condition classification Part 1.Environmental parameters and their severity (IEC 60721-1.2002, IDT)
3 Terms and definitions
The following terms and definitions as defined in IS......
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