GB/T 7320-2018 English PDF

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GB/T 7320-2018: Refractories -- Determination of thermal expansion
Status: Valid

GB/T 7320: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7320-2018	359	Add to Cart	4 days	Refractories -- Determination of thermal expansion	Valid
GB/T 7320-2008	439	Add to Cart	3 days	Refractories -- Determination of thermal expansion	Obsolete
GB/T 7320.1-2000	279	Add to Cart	3 days	Refractory materials-Determination of thermal expansion (Telescope method)	Obsolete
GB/T 7320-1987	279	Add to Cart	3 days	Test method for thermal expansion of refractory products	Obsolete

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Basic data

Standard ID: GB/T 7320-2018 (GB/T7320-2018)
Description (Translated English): Refractories -- Determination of thermal expansion
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q40
Classification of International Standard: 81.080
Word Count Estimation: 18,130
Date of Issue: 2018-05-14
Date of Implementation: 2019-04-01
Older Standard (superseded by this standard): GB/T 7320-2008
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 7320-2018: Refractories -- Determination of thermal expansion

---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.
(Refractory material Thermal expansion test method) ICS 81.080 Q40 National Standards of People's Republic of China Replace GB/T 7320-2008 Refractory thermal expansion test method (ISO 16835.2014, Refractoryproducts-Determinationof Thermalexpansion, MOD) Published on.2018-05-14 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 7320-2008 "Test method for thermal expansion of refractories", compared with GB/T 7320-2008, the main technology The changes are as follows. --- Increase the definition and calculation method of the linear expansion coefficient of any temperature Ti; --- Modified the definition and calculation formula of the average linear expansion coefficient; ---Modified the heating rate of the differential method expansion; --- Modified the specified load of the differential method expansion; --- Increase the range of sample size of the ejector method; --- Increase the rule of the load applied in the ejector method is not more than 2.0N; ---Modified the heating rate of the ejector method; --- Modified the calibration method and formula of the ejector method; --- Added Appendix A and Appendix B. This standard uses the redrafting method to modify the ISO 16835.2014 "Test Method for Thermal Expansion of Refractories". This standard has more structural adjustments than ISO 16835.2014. This standard and ISO 16835.2014 are listed in Appendix A. The chapter number is compared to the list. There are technical differences between this standard and ISO 16835.2014. Appendix B lists the techniques of this standard and ISO 16835.2014. A list of surgical differences and their causes. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard is proposed and managed by the National Technical Committee for Refractory Standardization (SAC/TC193). This standard was drafted. Sinosteel Luoyang Refractory Materials Research Institute Co., Ltd., China Metallurgical Wuhan Metallurgical Construction Research Institute Co., Ltd. The main drafters of this standard. Ding Junjie, Zhang Yi, Yang Jinsong, Wu Shujun, Li Longfei, Yang Fan, Cao Haijie, Du Wenzhong, Xiao Zhedong, Xia Changyong, crown. The release of the previous versions of the standard replaced by this standard is. ---GB/T 7320-1987; ---GB/T 7320.1-2000, GB/T 7320.2-2000; ---GB/T 7320-2008. Refractory thermal expansion test method

1 Scope

This standard specifies the definition, principle, equipment, sample, test procedure, result calculation, test error and test of thermal expansion measurement of refractory materials. report. This standard applies to the determination of the linear expansion rate, the average linear expansion coefficient and the instantaneous linear expansion coefficient of refractory materials. This standard contains the following two thermal expansion test methods. a) the differential method; b) The ejector method.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 4513.5 Unshaped refractories - Part 5. Sample preparation and pretreatment (GB/T 4513.5-2017, ISO 1927- 5.2012, MOD) GB/T 5989 Refractory load softening temperature test method differential heating method (GB/T 5989-2008, ISO 1893. 2005, IDT) GB/T 7321 shaped refractory product sample preparation method GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values GB/T 16839.1 Thermocouple Part 1. Index Table GB/T 16839.2 Thermocouple Part 2. Tolerance

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Initial temperature startingpointtemperature T0 The starting temperature (usually room temperature) used to record the amount of thermal expansion. 3.2 Lower limit temperature lower limittemperature T1 The lowest temperature at which the line expands is measured over a range of temperatures. 3.3 Upper limit temperature highestlimittemperature T2 The maximum temperature at which the line expands is measured over a range of temperatures. ......

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