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GB/T 4909.4-2009: Test methods for bare wires -- Part 4: Torsion test
Status: Valid GB/T 4909.4: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4909.4-2009 | English | 139 |
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Test methods for bare wires -- Part 4: Torsion test
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GB/T 4909.4-2009
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| GB/T 4909.4-1985 | English | 199 |
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Test methods for bare wires--Torsion test
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GB/T 4909.4-1985
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PDF similar to GB/T 4909.4-2009
Basic data | Standard ID | GB/T 4909.4-2009 (GB/T4909.4-2009) | | Description (Translated English) | Test methods for bare wires -- Part 4: Torsion test | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K11 | | Classification of International Standard | 29.060.10 | | Word Count Estimation | 6,697 | | Date of Issue | 2009-03-19 | | Date of Implementation | 2009-12-01 | | Older Standard (superseded by this standard) | GB/T 4909.4-1985 | | Quoted Standard | GB/T 4909.1-2009 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 3, 2009 (No. 143 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the bare wire torsion testing test equipment, specimen preparation, measurement procedures, test results and evaluation and so on. This section applies to the determination of nominal diameter d is 0. 300mm ~ 10. 00mm copper, aluminum and its alloys, bi-metal conductor lines and characteristics of circular cross-section dimensions a �� 20. 00mm profiled cross-section conductors (such as contact lines, etc.) torsion. This section is a predetermined length specimen, with its own axis as the center line twist until it breaks or until the specified number of times until the twist. This part should GB/T 4909. 1-2009 together. | GB/T 4909.4-2009: Test methods for bare wires -- Part 4: Torsion test---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.
Test methods for bare wires Part 4. Torsion test
ICS 29.060.10
K11
National Standards of People's Republic of China
Replacing GB/T 4909.4-1985
Test methods for bare wires
Part 4. torsion test
Posted 2009-03-19
2009-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 4909 "Test methods for bare wires" is divided into twelve parts.
--- Part 1. General;
--- Part 2. size measurement;
--- Part 3. Tensile test;
--- Part 4. torsion test;
--- Part 5. --- bending test repeated bending;
--- Part 6. bending test --- unidirectional bending;
--- Part 7. winding test;
--- Part 8. --- Brinell hardness test method;
--- Part 9. continuity of coating --- more sodium sulfide;
--- Part 10. Test for continuity of coating --- ammonium persulfate law;
--- Part 11. Coating adhesion test;
--- Part 12. solderability test methods --- balls.
This section GB/T 44909 Part of.
This Part replaces GB/T 4909.4-1985 "Test methods for bare wire torsion test."
Section compared with the GB/T 4909.4-1985 The main changes are as follows.
--- According to GB/T 1.1-2000 requirements, and on the formatting has been modified, and the part of the text has been modified;
--- Expanding the scope of the standard (1985 edition Chapter 1; Chapter 1 edition);
--- Added "Normative References" chapter (1985 edition no; Chapter 2 of this edition);
--- Torsional machines and chuck proposed a more detailed requirements (1985 edition Chapter 2; Chapter 3 edition);
--- Redefined the reverse speed (1985 Version 4.4; this version 5.4);
--- Remove the "double reverse" reverse mode (1985 Version 4.5; no edition).
This part is proposed by the China Electrical Equipment Industrial Association.
This part of the National Standardization Technical Committee Wire and Cable (SAC/TC213) centralized.
This section is drafted. Shanghai Electric Cable Research Institute, Jiang Su Shengan Cable Co., Ltd., Kunming Cable Co., Ltd., Baosheng Science and Technology Innovation
Co., Ltd. Shanghai Yalong Industry Co., Ltd. Hunan to electrical, Shenzhen, China Cable Co., Ltd., no
Tin Jiangnan Cable Co., Ltd. Mastery Cable Co., Ltd. and Henan.
Drafters of this section. Lu Sheng Ye, Xing Hai Yong, Sun Ping, HE Wen Jun, Zhang Hui Jiang, Li Bin, Wu Xue-yu, Zhang Peng, Zhang Chuan Province, Shiwan Fu.
This part of the standard replaces the previous editions are.
--- GB/T 4909.4-1985.
Test methods for bare wires
Part 4. torsion test
1 Scope
GB/T 4909 provisions of this part of the bare wire torsion test test equipment, specimen preparation, measurement procedures, test results and commentary
Set and so on.
Profiled conductor body and feature size Rao ≤20.00mm (such as contact line, etc.) torsion performance.
This section is a predetermined length of the specimen, with its own axis midline twist, twist until it breaks or reaches a predetermined number of times so far.
This section should be used in conjunction with the GB/T 4909.1-2009.
2 Normative references
The following documents contain provisions which, through reference to GB/T 4909 to the present, constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB/T 4909.1-2009 Test methods for bare wires - Part 1. General
3 Test Equipment
Torsion testing machine should meet the following requirements.
1 --- positioning chuck;
2 --- spin chuck;
3 --- specimen;
Rao --- shaped cross-sectional interview feature size pieces;
L --- gauge length;
F --- load.
Figure 1 Schematic torsion testing machine
3.1 Chuck
3.1.1 Chuck hardness
Chuck should have sufficient hardness, the clamping jaws hardness 55HRC ~ 65HRC.
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