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GB/T 7320-2018: Refractories -- Determination of thermal expansion
Status: Valid GB/T 7320: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7320-2018 | English | 359 |
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4 days [Need to translate]
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Refractories -- Determination of thermal expansion
| Valid |
GB/T 7320-2018
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| GB/T 7320-2008 | English | 439 |
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3 days [Need to translate]
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Refractories -- Determination of thermal expansion
| Obsolete |
GB/T 7320-2008
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| GB/T 7320.1-2000 | English | 279 |
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Refractory materials-Determination of thermal expansion (Telescope method)
| Obsolete |
GB/T 7320.1-2000
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| GB/T 7320-1987 | English | 279 |
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Test method for thermal expansion of refractory products
| Obsolete |
GB/T 7320-1987
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PDF similar to GB/T 7320-2018
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Count Estimation | 18,130 | | Date of Issue | 2018-05-14 | | Date of Implementation | 2019-04-01 | | Older Standard (superseded by this standard) | GB/T 7320-2008 | | Regulation (derived from) | National Standards Announcement No. 6 of 2018 | | Issuing agency(ies) | State Administration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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