GB/T 34183-2017 English PDF

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GB/T 34183-2017: Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34183-2017	199	Add to Cart	3 days	Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion	Valid

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Basic data

Standard ID: GB/T 34183-2017 (GB/T34183-2017)
Description (Translated English): Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient of thermal expansion
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q25
Classification of International Standard: 91.100.60
Word Count Estimation: 10,180
Date of Issue: 2017-09-07
Date of Implementation: 2018-08-01
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

GB/T 34183-2017: Thermal insulating products for building equipment and industrial installations -- Determination of the coefficient 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.
Thermal insulating products for building equipment and industrial installations - Determination of the coefficient of thermal expansion ICS 91.100.60 Q25 National Standards of People's Republic of China Insulation products for construction equipment and industrial installations Determination of thermal expansion coefficient (ISO 18099.2013, IDT) 2017-09-07 Posted 2018-08-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method identical with ISO 18099.2013 "thermal insulation products for construction equipment and industrial installations thermal expansion coefficient Determination. " This standard proposed by the China Building Materials Federation. This standard by the National Standardization Technical Committee thermal insulation material (SAC/TC191) centralized. This standard drafting unit. Nanjing Fiberglass Research and Design Institute Co., Ltd., the national glass fiber product quality supervision and inspection center. The main drafters of this standard. Zhang Jianhong, Wang Jiaqing, Cui Jun, Tang Jian, Yang Chao. Insulation products for construction equipment and industrial installations Determination of thermal expansion coefficient

1 Scope

This standard specifies the principle of linear thermal expansion coefficient, equipment, samples, steps, calculations and results. This standard applies to thermal insulation products, the temperature range of 196 ℃ ~ 850 ℃, and does not exceed the temperature limit of thermal products. This standard is not suitable Used for articles that undergo dimensional changes during the test due to water loss or other phase changes.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Linear thermal expansion linearthermalexpansion Reversible changes in sample length due to temperature changes. 2.2 Mean linear coefficient of thermal expansion αm The reversible change in length divided by the product of length and temperature difference at the reference temperature. 2.3 Coefficient of thermal expansion at temperature T coefficientoftherlexpansionatthetemperatureT αt Refers to the high temperature close to low temperature αm limit. see picture 1. Note. The definitions of αm and αt assume that the change in length is continuous with the change in temperature. When the sample occurs, such as recrystallization or water loss and other phase transition Produce physical changes, it is not appropriate to use the average linear thermal expansion coefficient. The curve gives the function of length change and temperature change, but average linear thermal expansion The coefficient should not be calculated from the discontinuity of the curve. ......

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