GB/T 25139-2025_English: PDF (GB/T25139-2025)
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB/T 25139-2025 | 279 |
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Ceramic foam filter for foundry
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| GB/T 25139-2010 | 279 |
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Ceramic foam filter for foundry
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| Standard ID | GB/T 25139-2025 (GB/T25139-2025) | | Description (Translated English) | Ceramic foam filter for foundry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J31 | | Classification of International Standard | 81.060.20 | | Word Count Estimation | 14,113 | | Date of Issue | 2025-03-28 | | Date of Implementation | 10/1/2025 | | Older Standard (superseded by this standard) | GB/T 25139-2010 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 25139-2025.Foam ceramic filters for casting
ICS 81.060.20
CCSJ31
National Standard of the People's Republic of China
Replace GB/T 25139-2010
Foam ceramic filter for casting
Released on 2025-03-28
2025-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Preface
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 25139-2010 "Foundry Foam Ceramic Filters". Compared with GB/T 25139-2010, except for the structural adjustment
In addition to the integration and editorial changes, the main technical changes are as follows.
a) The scope of application of foam ceramic filters for casting has been changed (see Chapter 1, Chapter 1 of the.2010 edition);
b) The terms and definitions of thermal shock resistance and cracking have been deleted (see Chapter 3 of the.2010 edition);
c) The classification and brand have been changed (see Chapter 4, Chapter 4 of the.2010 edition);
d) The performance indicators have been changed (see 5.1, 5.1 of the.2010 edition);
e) The dimensional tolerance requirements have been changed (see 5.2, 5.2 of the.2010 edition);
f) Deleted the determination of pore density (see 6.3 of the.2010 edition);
g) The determination of thermal shock resistance has been deleted (see 6.7 of the.2010 edition);
h) Factory inspection has been deleted (see 7.2 of the.2010 edition);
i) The marking requirements have been changed (see 8.1, 8.1 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. Jinan Shengquan Group Co., Ltd., Guangdong Foshan Ceramic Research Institute Holding Group Co., Ltd.,
Suzhou Xingye Materials Technology Co., Ltd., Sun Moon Heavy Industry Co., Ltd., Xiamen Jiajiada Machinery Co., Ltd., Baoding Ningxin Group
Co., Ltd., China Machinery Engineering Institute Group Shenyang Foundry Research Institute Co., Ltd., Shandong Yongchuang Materials Technology Co., Ltd., Guangdong Zhuli
Casting Technology Co., Ltd., Shandong Heavy Equipment Testing Technology Co., Ltd., Huazhong University of Science and Technology, Hohai University, Zhejiang Mechanical and Electrical Vocational and Technical University,
Wuhan University of Technology, Ludong University, Harbin Xinrun Industrial Co., Ltd., Andaco (Jiangsu) Ceramics Co., Ltd., Lishui Xianghao Technology Service Co., Ltd.
Ltd., Qufu Longxiang Metallurgical and Casting Auxiliary Materials Co., Ltd., Jiangsu Jiubao Lian Industrial Co., Ltd., Jinan Shengquan Casting Materials Co., Ltd., Shanxi Fu
Qian Special Ceramics Co., Ltd., Zhengzhou Jinzheng Huyi Casting Technology Co., Ltd., Shandong Juncheng Metal Technology Co., Ltd., Changsha Daixiang Auto Parts Technology Co., Ltd.
Technology Co., Ltd., Changsha Deka Technology Co., Ltd., Chiping Xinfa Aluminum Products Co., Ltd., Tianrun Industrial Technology Co., Ltd., China Aerospace
Harbin Dongan Engine Co., Ltd.
The main drafters of this document are. Liu Jinghao, Yang Shujin, Li Yuancai, Qiu Baofu, Chen Dengning, Ren Xianwei, Wang Zehua, Cong Jianchen, Wang Wenhao,
Sun Zhiyong, Guo Rui, Wang Shenghua, Chen Kaimin, Li Bin, Gao Yalong, Liu Ye, Liu Chunjing, Kong Bing, Cui Lanfang, Wang Huiming, Qian Zheng, Li Wenxuan, Cheng Nan,
Sun Pu, Zhang Jianyu, Liu Qinshuang, Li Dongyu, Shi Wenming, Liu Mingwei, Tian Jiangang, Lv Chenming, Wan Peng, Sun Xin, Hao Caihui, Liu Jun, Li Xiaomeng,
Zheng Haipeng.
This document was first published as GB/T 25139-2010 in.2010 and this is the first revision.
Foam ceramic filter for casting
1 Scope
This document specifies the classification and grade, technical requirements, test methods, inspection rules and marking, packaging,
Transportation and storage.
This document is applicable to refractory materials such as zirconium oxide, silicon carbide, aluminum oxide, mullite, carbon, magnesium oxide composite, etc., which are sintered at high temperature.
Foam ceramic filter for casting.
2 Normative references
The contents of the following documents constitute 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 8170 Rules for rounding off values and expression and determination of limit values
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Using open-cell polyurethane foam as the precursor, the refractory slurry impregnation molding process is adopted, and the three-dimensional network structure is sintered at high temperature.
Ceramic products with different structures for filtering metal melts.
3.2
The maximum stress value that a material can withstand under static pressure.
3.3
Porosity
The ratio of the volume of pores (open pores) filled with liquid to the outline volume of the specimen when immersed at room temperature.
3.4
Hole density holedensity
Number of holes per 25.4mm length.
3.5
Bulk density bulkdensity
The ratio of the mass of a dry sample to its total volume.
3.6
The ultimate bending stress that a specimen can withstand at high temperature.
Note 1.When the filter material is zirconia, the ultimate bending stress that the sample can withstand at 1400°C.
Note 2.When the filter material is a composite of silicon carbide, mullite, alumina, and magnesium oxide, the ultimate bending stress that the sample can withstand at 1200°C.
......
GB/T 25139-2010
Ceramic foam filter for foundry
ICS 81.060.20
J31
National Standards of People's Republic of China
Casting ceramic foam filter
Issued on. 2010-09-26
2011-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard by the National Standardization Technical Committee Cast (SAC/TC54) and focal points.
This standard is drafted by. Jinan-quan Group Co., Ltd.
Involved in the drafting of this standard. Foshan Diamond Technology Co., Ltd., Ningbo Riyue Group Co., Ltd., FAW Foundry Co., Ltd. Foundry
Institute, Dongfeng Motor Co., Ltd. commercial vehicle Casting Plant, northern Hebei Casting Co., Ltd., Tianjin Dicastal Wheel Manufacturing Co., Ltd.
The main drafters of this standard. Philip Chok, Liujing Hao, Li, Zhang Xiaoyu, Song Yin-fat, Mashun Long, Wang order, Guo Xu, Zang Jin.
Casting ceramic foam filter
1 Scope
This standard specifies the casting ceramic foam filter of terms and definitions, classifications and grades, technical requirements, test methods, inspection rules and
Signs, packaging, transportation and storage.
This standard applies to the refractory materials at high temperature sintering of casting ceramic foam filter.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
In open-cell polyurethane foam as the precursor, enrobing slurry refractory molding, high temperature sintering of having a three-dimensional network structure
Structure for molten metal filtration special ceramics.
3.2
Compressivestrengthatnormaltemperature compressive strength at room temperature
At room temperature on a sample unit area can withstand the maximum pressure without being damaged.
3.3
Thermal shock resistance resistancetothermalshocks
Sample at thermal shock resistance to cracking conditions with a performance.
3.4
Porosity porosity
The ratio of the sample at room temperature during impregnation liquid filled pores (open pore) volume and its volume contour.
3.5
Hole density (PPI) holedensity
Pores per 25.4mm length.
3.6
Crack crack
Sample Face (molten metal flowing through the vertical plane) on visible cracks.
3.7
Bulk density bulkdensity
Mass of dry sample outline its volume (including porosity) ratio.
3.8
High temperature flexural strength of high-temperaturebendingstrength
High temperature sample can withstand extreme bending stresses.
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