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GB/T 11420-2024: Vitreous and porcelain enamels - Test method of specular glossiness
Status: Valid GB/T 11420: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11420-2024 | English | 199 |
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Vitreous and porcelain enamels - Test method of specular glossiness
| Valid |
GB/T 11420-2024
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| GB/T 11420-1989 | English | 239 |
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3 days [Need to translate]
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Measurement of specular gloss of vitreous and porcelain enamels
| Obsolete |
GB/T 11420-1989
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PDF similar to GB/T 11420-2024
Basic data | Standard ID | GB/T 11420-2024 (GB/T11420-2024) | | Description (Translated English) | Vitreous and porcelain enamels - Test method of specular glossiness | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y26 | | Classification of International Standard | 25.220.50 | | Word Count Estimation | 10,175 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 11420-1989 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 11420-2024: Vitreous and porcelain enamels - Test method of specular glossiness---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.
ICS 25:220:50
CCSY26
National Standards of People's Republic of China
Replaces GB/T 11420-1989
Test method for gloss of enamel products and porcelain glazes
Released on 2024-04-25
2024-11-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents"
Drafting:
This document replaces GB/T 11420-1989 "Test method for enamel gloss": Compared with GB/T 11420-1989, except for structural adjustment and
In addition to editorial changes, the main technical changes are as follows:
a) "Terms and Definitions" has been changed (see Chapter 3, Chapter 2 of the 1989 edition);
b) The requirements for the incident angle of the instrument and the working standard plate have been changed (see Chapter 5, 5:3 of the 1989 edition);
c) Added test environment (see Chapter 7);
d) The test procedures have been changed (see Chapter 8, Chapter 6 of the 1989 edition);
e) Added calculation and result presentation (see Chapter 9);
f) The content of the test report has been changed (see Chapter 10, Chapter 7 of the 1989 edition):
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document was proposed by the China Machinery Industry Federation:
This document is under the jurisdiction of the National Technical Committee for Standardization of Metallic and Non-metallic Coverings (SAC/TC57):
This document was drafted by: Hunan Sino Technology Co:, Ltd:, Zhuhai Gree Electric Appliances Co:, Ltd:, Donghua University, Jiangyin Silicon Putang
Porcelain Co:, Ltd:
The main drafters of this document are: Dai Qi, Yin Le, Zhang Shengtao, Xu Xiaojian, Wang Chenggen, Wang Helan, Ye Jiayi, Jiang Weizhong, Chen Hongmei, Xu Zhangqian,
Gong Miao:
This document was first published in 1989 and this is the first revision:
Test method for gloss of enamel products and porcelain glazes
1 Scope
This document describes the test method for the gloss of enameled articles and porcelain enamel coatings:
This document is applicable to testing the glossiness of the surface of enamel products and porcelain glaze layers:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
JJG696 Verification Procedure for Mirror Gloss Meter and Gloss Plate
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
gloss
The degree of gloss on the surface of enamel products and porcelain glaze layers:
3:2
glossiness
The brightness of the surface of enamel products and porcelain glaze is expressed by numerical values:
3:3
Polished flat black glass with a refractive index of 1:567 and a surface gloss value of 100 at an incident angle (θ) in the visible light wavelength range
Glass plate:
3:4
Usually made of glass or ceramics, it is a standard plate with a flat, uniform and wear-resistant surface used for gloss meter measurement and calibration:
4 Principle
Under the specified light source and incident angle (θ), the reflected luminous flux of the enamel product and the enamel porcelain layer surface in the mirror direction is compared with the reference standard:
The glossiness of a standard plate or working standard plate is tested by measuring the reflected luminous flux in the mirror direction:
The glossiness is calculated according to formula (1):
Gs(θ)=
Φs
Φos
·Gos(θ) (1)
Where:
Gs --- glossiness of the sample;
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