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GB/T 25138-2024: Standard silica sand for checking foundry binder
Status: Valid GB/T 25138: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 25138-2024 | English | 139 |
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Standard silica sand for checking foundry binder
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GB/T 25138-2024
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| GB/T 25138-2010 | English | 239 |
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Standard sand for checking foundry binder
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GB/T 25138-2010
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PDF similar to GB/T 25138-2024
Basic data | Standard ID | GB/T 25138-2024 (GB/T25138-2024) | | Description (Translated English) | Standard silica sand for checking foundry binder | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J31 | | Classification of International Standard | 91.100.15 | | Word Count Estimation | 6,645 | | Date of Issue | 2024-03-15 | | Date of Implementation | 2024-10-01 | | Older Standard (superseded by this standard) | GB/T 25138-2010 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 25138-2024: Standard silica sand for checking foundry binder---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 91.100.15
CCSJ31
National Standards of People's Republic of China
Replace GB/T 25138-2010
Standard silica sand for testing foundry binders
Released on 2024-03-15
2024-10-01 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 25138-2010 "Standard silica sand for testing foundry binders".
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The scope has been changed (see Chapter 1, Chapter 1 of the.2010 edition);
b) The terms and definitions have been changed, and the terms and definitions of acid consumption value and fine powder content have been deleted (see Chapter 3,.2010 Edition,
chapter);
c) The brand name has been changed (see Chapter 4, Chapter 4 of the.2010 edition);
d) The chemical composition requirements have been changed (see 5.1, 5.1 and 5.2 of the.2010 edition);
e) The particle size composition and average fineness requirements have been changed (see 5.2, 5.3 of the.2010 edition);
f) Other technical performance index requirements have been changed (see 5.3, 5.4~5.7 of the.2010 edition);
g) Added the calculation method of average fineness (see 6.3);
h) Added the method for determining true density (see 6.4);
i) Added the determination methods of pH value, bulk density and conductivity (see 6.5);
j) The inspection rules have been changed (see Chapter 7, Chapter 7 of the.2010 edition);
k) The packaging, labeling, transportation and storage have been changed (see Chapter 8, Chapter 8 of the.2010 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 is proposed and coordinated by the National Casting Standardization Technical Committee (SAC/TC54).
This document was drafted by. Tongliao Dalin Molding Sand Co., Ltd., Chengde Beiyan New Materials Technology Co., Ltd., Anhui Yingliu Group Huoshan Casting
Co., Ltd., Liuzhou Liujing Environmental Protection Technology Co., Ltd., China Machinery Engineering Academy Group Shenyang Foundry Research Institute Co., Ltd., Liujing Technology Group
Co., Ltd., Hainan Wenchang Fuyao Silica Sand Co., Ltd., Chengde Dongwei New Materials Technology Co., Ltd., Tianyang New Materials Technology Co., Ltd.,
Yingkou Hengyuan Casting Materials Co., Ltd., Guangdong Zhuli Casting Materials Technology Co., Ltd., Huazhong University of Science and Technology, Foshan Vocational and Technical College, Jiang
Shanhaiwei Technology Co., Ltd., Yantai Standard Metrology Inspection and Testing Center, Shenyang Machine Tool Yinfeng Casting Co., Ltd., Fuxin Lida Steel Casting
Co., Ltd., Inner Mongolia First Machinery Group Co., Ltd.
The main drafters of this document are. Su Ruifang, Zhang Zhitao, Han Bing, Han Haitao, Du Yingliu, Wang Yan, Ren Wenqiang, Li Yuancai, Zhang Yancheng, Gao Hua,
Zhang Xianwang, Chen Wenlong, Hu Zhongchao, Zheng Xiaocui, Gu Chunlong, Wang Heng, Cui Lanfang, Liu Chunjing, Liu Sha, Liu Jiance, Wu Yuping, Hu Shengli, Bao Jun.
This document was first published in.2010 and this is the first revision.
Standard silica sand for testing foundry binders
1 Scope
This document specifies the grades, technical requirements, test methods, and inspection methods of standard silica sand for testing foundry binders (referred to as standard silica sand for casting).
Inspection rules as well as packaging, marking, transportation and storage.
This document applies to the production and inspection of standard silica sand for calibrating foundry binders.
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.
GB/T 2684 Test methods for foundry sand and mixtures
GB/T 5071 Test method for true density of refractory materials
GB/T 5611 Casting Terminology
GB/T 6003.1 Technical requirements and inspection of test sieves Part 1.Wire mesh test sieves
GB/T 7143 Chemical analysis method for silica sand for foundry
GB/T 9442 Silica sand for foundry
3 Terms and definitions
The terms and definitions defined in GB/T 5611 and the following apply to this document.
3.1
Special silica sand with specific chemical composition and related technical performance indicators, used to test the strength of foundry binders and other properties.
4 Brand
The grade of standard silica sand for casting is. ZBS90-53A-1.20, which means.
ZBS---standard silica sand for casting (the first letter of the Chinese pinyin of casting, standard and sand);
90 ---Silicon dioxide content 90%~93%;
53 --- Average fineness is 53;
A --- The average fineness deviation grade is A;
1.20---Angular factor 1.15~1.20.
5 Technical requirements
5.1 Chemical composition
The chemical composition of standard silica sand for casting is shown in Table 1.
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