GB/T 3651-2008 English PDF

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GB/T 3651-2008: Measuring method for thermal conductivity of metal at high temperature
Status: Valid

GB/T 3651: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3651-2008	189	Add to Cart	3 days	Measuring method for thermal conductivity of metal at high temperature	Valid
GB/T 3651-1983	239	Add to Cart	2 days	Measuring method for thermal conductivity of metal at high temperature	Obsolete

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GB/T 3249   GB/T 2523   GB/T 3655   GB/T 3658   GB/T 3656   

Basic data

Standard ID: GB/T 3651-2008 (GB/T3651-2008)
Description (Translated English): Measuring method for thermal conductivity of metal at high temperature
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H21
Classification of International Standard: 77.040.99
Word Count Estimation: 8,855
Date of Issue: 2008-06-09
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 3651-1983
Quoted Standard: GB/T 1220; GB/T 2614; GB/T 8170; GB/T 9971
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
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 vertical heat flow measurement principle of direct electrical measurement of high temperature thermal conductivity of metals, specimen requirements, data processing and measurement results, , measuring equipment and apparatus, measurement procedure measurement records and reports. This standard applies to the measurement of metals or alloys without phase change thermal conductivity temperature within a temperature range of 80��C ~ 900��C.

GB/T 3651-2008: Measuring method for thermal conductivity of metal at high temperature

---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.
Measuring method for thermal conductivity of metal at high temperature ICS 77.040.99 H21 National Standards of People's Republic of China Replacing GB/T 3651-1983 Metal high temperature thermal conductivity measurement method Posted 2008-06-09 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 3651-1983 "metal temperature thermal conductivity measurement method." This standard compared with GB/T 3651-1983, mainly in the following changes. --- Test Method for increasing the scope of application of the composite sheet or plate made of metal composite materials; --- Size of a sheet or plate made of a composite metal composites made requirements; --- By the standard unit of pressure mmHg to Pa, the thermal conductivity of the unit by the cal · cm-1 · s-1 · ℃ -1 to W · cm-1 · ℃ -1; --- The Appendix A measuring device calibration reference material is defined as pure iron grades (YT3) and grades (06Cr18Ni11Ti); --- Increasing the measurement records and reports. Appendix A of this standard is an informative annex. The standard proposed by China Nonferrous Metals Industry Association. This standard Nonferrous Metals by the National Standardization Technical Committee. This standard by the Beijing Nonferrous Metal Research Institute is responsible for drafting. The main drafters of this standard. Lu Wang, Xie Yuanfeng, TRANSACTIONS OF THE, Wang Yumin, Li Yi people. This standard replaces the standards previously issued as follows. --- GB/T 3651-1983. Metal high temperature thermal conductivity measurement method

1 Scope

This standard specifies the measuring principle of direct electrical longitudinal heat flow measurement metal high temperature thermal conductivity of the sample requirements, measurement equipment and instruments , A step of measuring, data processing and measurement results, measurement records and reports. This standard applies to the measurement of metals or alloys without phase change thermal conductivity temperature within a temperature range of 80 ℃ ~ 900 ℃.

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 1220 stainless steel rods GB/T 2614 nickel-chromium - nickel silicon thermocouple wire GB/T 8170 numerical rounding rules GB/T 9971 raw iron

3 Measuring principle

3.1 Methods of measurement is shown in Figure 1. 1 --- heat furnace; 2 --- insulating material; 3 --- sample; 4 --- soaking pipe; 5 --- thermocouples measure the ambient temperature; 6 --- measuring sample temperature thermocouple. Figure 1 Measurement schematic 3.2 bar specimen through a DC current, the Joule heat generated mainly along the specimen longitudinal conduction to the ends. After reaching thermal steady state that A one-dimensional longitudinal heat flux on the sample, the sample and lateral heat exchange between the environment be amended, the thermal conductivity of the sample is determined by the following formula. λ = 6.364 × 10 D2 (Δ1-εN) (1) Where. Thermal conductivity λ --- sample, in units of watts per centimeter per degree Celsius (W · cm-1 · ℃ -1); ......

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