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GB/T 24297-2009: The test method for thermal deflection rate of spiral and helix coils of thermostat bimetal
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24297-2009 | English | 209 |
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The test method for thermal deflection rate of spiral and helix coils of thermostat bimetal
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GB/T 24297-2009
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Basic data | Standard ID | GB/T 24297-2009 (GB/T24297-2009) | | Description (Translated English) | The test method for thermal deflection rate of spiral and helix coils of thermostat bimetal | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H21 | | Classification of International Standard | 29.120.20 | | Word Count Estimation | 9,961 | | Date of Issue | 2009-09-30 | | Date of Implementation | 2010-02-01 | | Quoted Standard | GB/T 4461; GB/T 2900.4 | | Adopted Standard | ASTM B389-1981 (2004), MOD | | Regulation (derived from) | National Standard Approval Announcement 2009 No.10 (Total No.150) | | 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 principle of thermal bimetal spiral element heat deflection rate measurements, methods and equipment requirements. This standard applies to the determination of thermal bimetal flat stage rotary -shaped element and heat deflection rate straight spiral elements, but also to measure the thickness of less than 0. 3 mm thermal bimetal temperature curvature. | GB/T 24297-2009: The test method for thermal deflection rate of spiral and helix coils of thermostat bimetal
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The test method for thermal deflection rate of spiral and helix coils of thermostat bimetal
ICS 29.120.20
H21
National Standards of People's Republic of China
Heat deflection element test method for thermal bimetal spiral
Posted 2009-09-30
2010-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This revised standard adopts ASTMB389. 1981 "Thermal bimetallic spiral element heat deflection test method" (2004 review confirm).
This standard is based on ASTMB389. redraft 1981 (2004 review confirm). The standard lists the reg number and in Appendix B
ASTMB389. 1981 List of control clauses numbered.
This standard and ASTM standards are used by major technical differences, see Appendix C.
--- Within our industry requirements applicable test equipment, canceled the ASTM standard pointer angle at each test temperature location
Accuracy requirement of 0.25 °;
--- Is coordinated with the relevant standards, temperatures T1, T2 when the angle indicated by the symbols A1, A2 to 1, 2.
The Standard Appendix A, Appendix B and Appendix C are informative appendices.
The standard proposed by China Electrical Equipment Industrial Association.
This standard by the National Standardization Technical Committee for Electrotechnical alloy (SAC/TC228) centralized.
This standard was drafted. Baoshan Iron & Steel Co., Ltd., Shanghai Electric Division electrician Material Co., Ltd., Shanghai Electric Co., Ltd., and Yun, Gui
Lin Electric Institute of Science, Foshan Electrical Precision Alloy Co., Ltd.
The main drafters. Zhang Zhongmin, Lu Yao, Shen Yi, Feng Yunfu, Huo Zhiwen, Xie Yongzhong.
Heat deflection element test method for thermal bimetal spiral
1 Scope
This standard specifies the principle of thermal bimetal spiral element heat deflection measurement, methods and equipment requirements.
This standard applies to the determination of thermal bimetal thermal deflection rate flat spiral element and straight helical element also applies to the thickness of less than
Metal temperature measuring 0.3mm hot double curvature.
This standard is to determine the number of thermal bimetal spiral element of acceptance or rejection of quality inspection instruments.
This standard helps determine the amount of deflection in a spiral element material of optimal thickness and length.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2900.4 Electrotechnical terminology - Electrical Alloy
GB/T 4461 heat the bimetal strip
3 Terms and Definitions
GB/T 2900.4 and established the following terms and definitions apply to this standard.
3.1
Thermal bimetal narrow along its longitudinal direction to the side to keep the plane perpendicular to the axis formed by spirally wound member. Low production
Expansion of the outer layer may also be included. One end of the fixed member and the other end is a free end, when the temperature changes, the free end with a change in temperature into
Line deflection. Appendix A in Figure A. 1 is mounted on the sample holder of the flat spiral element.
3.2
Thermal bimetal narrowband wound tubular helix (or coils). The production of low expansion outer layer may also be included, it can be made into a left spiral
Or right spiral. Appendix A in Figure A. 2 is installed in a straight helical elements of sample holder.
4 measuring principle
The end of the spiral-shaped element fixed sample, measuring the angle of rotation of the other end of the sample at a certain temperature difference.
5 measurement device
5.1 bath temperature
One kind of energy or stirred tank thermostat uniform heating cabinet, the bath can be placed on the sample holder and adjustable heating source. Use adjustable heating
Source, the sample can be maintained at the required temperature throughout the test in the bath temperature should be controlled within ± 0.3 ℃ of.
5.2 angle measuring device
One kind of test can measure the temperature at different locations protractor, the minimum scale of 0.5 °.
5.3 Temperature measuring device
By the precision mercury thermometers or other temperature measurement instrument composed of accuracy should not be less than 0.3 ℃.
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