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GB/T 31562-2024: Foundry machinery - Determination method of cleanliness
Status: Valid GB/T 31562: Evolution and historical versions
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| GB/T 31562-2024 | English | 519 |
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Foundry machinery - Determination method of cleanliness
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GB/T 31562-2024
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| GB/T 31562-2015 | English | 359 |
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Foundry machinery -- Determination of cleanliness
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GB/T 31562-2015
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PDF similar to GB/T 31562-2024
Basic data | Standard ID | GB/T 31562-2024 (GB/T31562-2024) | | Description (Translated English) | Foundry machinery - Determination method of cleanliness | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J61 | | Classification of International Standard | 25.120.30 | | Word Count Estimation | 26,230 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 31562-2015 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 31562-2024: Foundry machinery - Determination method of cleanliness---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 25.120.30
CCSJ61
National Standard of the People's Republic of China
Replaces GB/T 31562-2015
Method for determination of cleanliness of foundry machinery
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4.Selection basis of cleanliness determination method and cleanliness assessment method 3
4.1 Basis for selecting cleanliness determination method 3
4.2 Cleanliness Assessment Methods 4
5 Gravimetric method 4
5.1 Sampling 4
5.2 Filter 4
5.3 Drying 6
5.4 Weighing 6
5.5 Calculation and determination 6
6 Particle counting method 7
6.1 Microscopic particle counting method 7
6.2 Automatic particle counting method 11
Appendix A (Normative) Sampling 12
A.1 Purification of sampling containers 12
A.2 Finished product acceptance and sampling during assembly 12
A.3 Sampling of oil in hydraulic system and circulating lubrication system 13
Appendix B (Informative) Weight Method Cleanliness Test Record Calculation Table 15
Appendix C (Informative) Microscope Particle Counting Method Cleanliness Test Record Sheet 16
Appendix D (Normative) Cleanliness Level Code 17
Reference 18
Figure 1 Grid area, unit area and subunit area 3
Figure 2 Schematic diagram of the filtration device 6
Figure 3 Particle counts on the boundary line of the selected area 9
Figure 4 Particle Count 10
Figure A.1 Schematic diagram of fuel tank sampling 13
Figure A.2 Schematic diagram of pipeline sampling 14
Table 1 Magnification of microscope and selection of eyepiece and objective lens 8
Table 2 Selection of microscope magnification 9
Table B.1 Weight method cleanliness test record calculation table 15
Table C.1 Microscope particle counting method cleanliness test record table 16
Table D.1 Cleanliness level code table 17
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 31562-2015 "Method for determination of cleanliness of casting machinery".
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The “scope” has been redefined (see Chapter 1, Chapter 1 of the.2015 edition);
b) Change "methods and procedures for determining cleanliness" to "basis for selecting cleanliness determination methods and methods for evaluating cleanliness", delete
The technical terms of the determination procedure were revised, and the technical terms of the selection basis of the cleanliness determination method and the cleanliness assessment method were added.
Paragraph (see Chapter 4, Chapter 3 of the.2015 edition);
c) Change the “microscope method” in the cleanliness determination method to “particle counting method” (see 4.1, 4.2, Chapter 6,.2015 edition)
3.1, 3.3, Chapter 6);
d) Deleted “microscope particle contrast method” (see 3.3, 6.3.1, 6.3.2 of the.2015 edition);
e) Added “Automatic particle counting method” (see 4.1.1, 6.2).
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 Foundry Machinery Standardization Technical Committee (SAC/TC186).
This document was drafted by. Nan'an Zhongji Standardization Research Institute Co., Ltd., Shenzhen Lingwei Technology Co., Ltd., Yonghong Baoding Foundry Machinery
Co., Ltd., Nantong Weiersi Machinery Technology Co., Ltd., Guoke Weilai (Xiamen) Technology Co., Ltd., Anqing Normal University, Zhejiang Wanfeng
Technology Development Co., Ltd., Wuxi Lihu New Quality Energy Saving Technology Co., Ltd., Fujian Minxuan Technology Co., Ltd., Jinan Casting and Forging Institute
Inspection and Testing Technology Co., Ltd., Zhejiang Qianjin HVAC Technology Co., Ltd., Anhui Anhuang Machinery Co., Ltd., China Automotive Industry
Engineering Co., Ltd., Qingdao Antai Heavy Industry Machinery Co., Ltd., Qingdao Zhongzhida Environmental Protection Melting Equipment Co., Ltd., Qingdao Qingli Environmental Protection Equipment Co., Ltd.
Ltd., Qingdao Kaijie Heavy Industry Machinery Co., Ltd., Qingdao Beinuo Magnetic Technology Co., Ltd., Jiarui Technology (Huizhou) Co., Ltd., Quanzhou Standard
Standardization Association, Fujian Dehua Lumin Yijia Ceramics Cultural and Creative Co., Ltd., Shandong Jie Chuang Machinery Co., Ltd., Weihai Gongyou Foundry Machinery Co., Ltd.
Qingdao Sanrui Machinery Manufacturing Co., Ltd., Jiaozhou Administrative Approval Service Bureau, Jinan Ruisheng Casting Machinery Co., Ltd., China National Heavy Duty Truck Group Jinan
South Power Co., Ltd. Molding Plant.
The main drafters of this document are. Zhu Bin, Pan Lingling, Li Yanqing, Shi Chuanming, Fu Zhihong, Wu Qiong, Wu Jun, Shi Kaiwang, Chen Huiling, Lu Jun, Zhao Lichao,
Huang Changwen, Liu Caisheng, Liu Xiaolong, Ding Renxiang, Duan Jinting, Yu Kuopei, Su Liguo, Li Haichun, Li Yuanfa, Huang Zhiqiang, Zhu Fangfang, Li Lan, Zhang Xuxia,
Zhang Jie, Chi Yingjie, Yan Zuoxiu, Zhu Jinlin, Xiang Ziqiang, Bai Yang, Liang Shujie, Li Chen, Duan Yudong, Nie Yuhan.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2015 as GB/T 31562-2015;
---This is the first revision.
Introduction
The cleanliness of casting machinery is the residual solid pollution on the surface of parts with cleanliness requirements or in the hydraulic and lubrication systems of casting machinery.
The amount of solid pollutants (such as metal chips, sand, dust, fibers and other debris) on the performance and service life of the product.
and reliability.
The cleanliness of casting machinery is an important quality indicator, which can usually be expressed by the mass limit of solid contaminants and/or the size of solid particles.
The cleanliness level expressed in different ways is expressed in different ways using different cleanliness measurement methods, such as
Gravimetric method, particle counting method, etc.
Since its first release, this document has provided technical support for the cleanliness determination of foundry machinery in my country and has played a significant role in standardizing the cleanliness inspection of foundry machinery.
However, with the advancement of computer technology, pattern recognition and analysis technology in recent years,
Cleanliness detection technology has also been newly developed. Some of the original technical clauses of this document have lagged behind.
Cleanliness determination method, incorporates and reflects the current advanced technical achievements in cleanliness detection, promotes technological progress, and provides foundry machinery manufacturers with
In order to provide inspection basis that is more in line with international requirements for third parties, it is necessary to revise GB/T 31562-2015.
Method for determination of cleanliness of foundry machinery
1 Scope
This document provides the selection basis and cleanliness assessment method for foundry machinery cleanliness.
Determine the method.
This document applies to the determination of cleanliness of foundry machinery.
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 37163 Hydraulic transmission - Determination of particle contamination of liquid samples by automatic particle counting method using the light shielding principle
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Contaminants
Solid particles contained in the object being measured that have a harmful effect on the working performance, service life and reliability of the casting machinery (such as metal cutting
chips, sand, dust, fibers and other debris).
Note. The objects to be measured are usually the surfaces of parts or hydraulic and lubrication systems of casting machinery with cleanliness requirements.
3.2
Cleanliness
The amount of pollutants contained in the object being measured.
3.3
Gravimetry
A method of determining cleanliness by detecting the mass of contaminants.
Note. The mass value of pollutants is usually expressed in milligrams (mg).
3.4
The cleanliness is determined by detecting the particle size of pollutants in the liquid sample or on the filter test piece and the number of particles in different size ranges.
Cleanliness method.
3.5
Particle counting method using optical microscopy and manual counting.
3.6
A particle counting method that uses an automatic particle counter or image recognition and analysis equipment with a camera function to automatically measure and count particles.
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