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GB/T 31909-2015: Permeable sintered metal materials -- Determination of the air permeability
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31909-2015 | English | 149 |
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Permeable sintered metal materials -- Determination of the air permeability
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GB/T 31909-2015
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Basic data | Standard ID | GB/T 31909-2015 (GB/T31909-2015) | | Description (Translated English) | Permeable sintered metal materials -- Determination of the air permeability | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H16 | | Classification of International Standard | 77.160 | | Word Count Estimation | 7,758 | | Date of Issue | 2015-09-11 | | Date of Implementation | 2016-06-01 | | Quoted Standard | GB/T 5163 | | Regulation (derived from) | National Standard Announcement 2015 No.25 | | 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 | | Summary | This Standard specifies the method for determination of permeable sintered metal material air permeability. This Standard applies to tubular or plate-like permeable sintered metal materials - Determination of air permeability. | GB/T 31909-2015: Permeable sintered metal materials -- Determination of the air permeability---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.
Permeable sintered metal materials.Determination of the air permeability
ICS 77.160
H16
National Standards of People's Republic of China
Permeable sintered metal materials
Determination of air permeability
Issued on. 2015-09-11
2016-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Nonferrous Metals Industry Association.
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard was drafted. Xi'an Pao Powder Metallurgy Co., Ltd., Beijing Tianlong tungsten and molybdenum Technology Co., Steel Research
General Hospital.
The main drafters of this standard. collar Dong Feng, Zhang Xu, sinus micro Britain, Su Guoping, Chen Dai, Caobo Liang Xue Tracy, Zhu Li Ran.
Permeable sintered metal materials
Determination of air permeability
1 Scope
This standard specifies the method for measuring the permeability of sintered metal material air permeability.
This standard applies to tubular or plate-like permeable sintered metal materials - Determination of air permeability.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 5163 Sintered metal materials (excluding carbide) permeable sintered metal material density, oil content and open porosity
Determine
Principle 3
Air permeability is permeable sintered metal material (porous material) gas through one kind of way of characterizing the performance, also called the relative permeability coefficient
(Kg), which is calculated see equation (1).
Kg =
A × ΔP
(1)
Where.
Kg --- air permeability in units of cubic meters per hour kPa [m3/(h · kPa · m2)];
Q --- gas flow rate, in units of cubic meters per hour (m3/h);
A --- test specimen area, in square meters (m2);
Pressure ΔP --- gases produced by the difference in the sample, in units of kilopascals (kPa).
From the air permeability of the formula (1) can be seen in its characterization it is. pressure at the unit, the gas flow through unit area of specimen.
4 Sample
Before air permeability test, the sample should be removed pores all of the liquid in which oil should be GB/T 5163, the use of appropriate
The solvent was removed before the test sample after drying.
5 Instruments
5.1 Instrument structure
Air permeability instrument structure is shown in Figure 1. Gas passes through a flow meter control valve, the gas flowing into the instrument by the meter reserve
Fixture interface. Setting aside the instrument gauge port interfaces jig near the site of specimen holder. When the test fixture instrument interfaces and reserved
Specimen holder sealed connection.
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