GB/T 24272-2009 English PDF

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GB/T 24272-2009: Test method for mechanical torque rate of spiral coils of thermostat metal
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24272-2009	139	Add to Cart	3 days	Test method for mechanical torque rate of spiral coils of thermostat metal	Valid

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Basic data

Standard ID: GB/T 24272-2009 (GB/T24272-2009)
Description (Translated English): Test method for mechanical torque rate of spiral coils of thermostat metal
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H21
Classification of International Standard: 29.120.20
Word Count Estimation: 6,629
Date of Issue: 2009-06-19
Date of Implementation: 2010-02-01
Adopted Standard: ASTM B362-1991 (2003), MOD
Regulation (derived from): National Standard Approval Announcement 2009 No.9 (Total No.149)
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 flat torque measurement of mechanical components, methods and equipment requirements. This standard applies to the determination of the rate of thermal mechanical torque flat spiral bimetal element. Also suitable for accurately measuring levels of other materials mechanical torque ratio of the spiral elements. Can be used to determine the level of mechanical thermal bimetal helix element.

GB/T 24272-2009: Test method for mechanical torque rate of spiral coils of thermostat metal

---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 method for mechanical torque rate of spiral coils of thermostat metal ICS 29.120.20 H21 National Standards of People's Republic of China Flat spiral heat bimetal element machinery Torque test method Posted 2009-06-19 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 ASTMB362.1991 (2003 years' re-confirm) "hot flat spiral bimetal element mechanical torque ratio test method". This standard is based on ASTMB362.1991 (2003 years' re-confirm) redrafted. For ease of comparison, in the informative Appendix A The list of standard and control adopted list of standard terms. Taking into account China's national conditions, when using ASTM standard has been modified. This standard ASTMB362.1991 standard main technical differences are. --- Test torque and initial torque data modified; --- Is coordinated with the relevant standard, temperatures T1, T2 when the angle indicated by the symbols A1, A2 to 1, 2. The Standard Appendix A, Appendix B is an informative annex. 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 transport, Guilin Institute of Electrical Science, Foshan Electrical Precision Alloy Co., Ltd. The main drafters. Zhang Zhongmin, Lu Yao, Feng Yunfu, Shen Yi, Huo Zhiwen, Xie Yongzhong. Flat spiral heat bimetal element machinery Torque test method

1 Scope

This standard specifies the principle of thermal bimetal flat spiral element mechanical torque measurement, methods and equipment requirements. This standard applies to the determination of the thermal mechanical torque rate bi-metal flat spiral element. It is also applicable to other materials to accurately determine the level spiral Mechanical torque rate element. It can be used to determine the mechanical force hot flat spiral bimetal element. This standard may be at a given moment of machinery, to determine the optimal thickness and length of the material. This standard can be used to test the quality of the thermal bimetal to determine acceptance or rejection.

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 2900.4 Electrical Electrical Alloy term GB 4461 thermal bimetal strip 3 Terms, definitions and code GB/T 2900.4 and established the following terms and definitions apply to this standard. 3.1 Thermal bimetal narrow along its longitudinal direction so that the side of the holding member in a plane perpendicular to the axis of the helical coil made. 3.2 The ratio of the torque deflection angle. Used to measure the thermal rigid flat spiral bimetal element. Codenamed M.

4 measuring principle

Applying a torque to the hot flat spiral bimetal element, whereby the angle measurement caused by the deflection. The applied torque can not exceed the level screw Elastic limit Spiral element. Flat spiral heat bimetal element mechanical torque rate formula (1). M = PL2-1 (1) Where. --- Mechanical torque rate the M units of (N · m/1 °); P --- test load, in units of (N); --- L of arm units of (m); Angular position 1 --- under the initial moment, the unit is (°); 2 --- torque applied to the angular position of the test after the units (°).

5 measurement device

Measurement apparatus shown in FIG. 1 comprises the main content from 5.1 to 5.6. ......

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