GB/T 9444-2019 PDF English
US$555.00 · In stock · Download in 9 secondsGB/T 9444-2019: Steel and iron castings - Magnetic particle inspection Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 9444: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 9444-2019 | English | 555 |
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Steel and iron castings - Magnetic particle inspection
| Valid |
| GB/T 9444-2007 | English | 719 |
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3 days
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Magnetic particle testing for steel castings
| Obsolete |
| GB/T 9444-1988 | English | 399 |
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3 days
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The methods for magnetic particle testing and for specifying quality levels of steel castings
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 9444-2019
GB/T 9444-2019: Steel and iron castings - Magnetic particle inspection---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT9444-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.040.20
J 31
Replacing GB/T 9444-2007
Steel and iron castings - Magnetic particle inspection
(ISO 4986.2010, Steel castings - Magnetic particle inspection, MOD)
Issued on. AUGUST 30, 2019
Implemented on. MARCH 01, 2020
Issued by. State Administration for Market Regulation.
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 General requirements... 6
5 Acceptance criteria... 9
6 Indication ratings and evaluations... 12
7 Reinspection... 13
8 Inspection records and reports... 13
Appendix A (Informative) Comparison of Article numbers and technical differences
with the original standards when adopting international standards and their reasons 16
Appendix B (Informative) Recommended surface roughness for magnetic particle
inspection... 19
Appendix C (Informative) Quality grade reference diagram (single) for non-linear
indication (SM)... 20
Appendix D (Informative) Quality grade reference diagram for line indication (LM)
and aligned indication (AM)... 25
Appendix E (Informative) Magnetic particle inspection report format... 40
References... 42
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 9444-2007 "Magnetic particle inspection for steel
castings". Compared with GB/T 9444-2007, the main technical content changes of this
standard are as follows, except for editorial modifications.
- MODIFY the scope of application of the standard (see Chapter 1);
- ADD the terms and definitions (see Chapter 3);
- ADD the inspection methods (see 4.3), materials and equipment (see 4.1.1), test
blocks (see 4.1.3), verification methods (see 4.1.4);
- MODIFY the quality grade assessment (see Chapter 6; Chapter 7 of the 2007
edition);
- ADD the re-inspection (see Chapter 7), inspection records and reports (see Chapter
8);
- DELETE the original Appendix A and the original Appendix B; ADD the new
Appendix B and Appendix C;
- DELETE the original Appendix D and the original Appendix E; ADD the new
Appendix A and Appendix E.
This standard uses the redrafting method to adopt ISO 4986.2010 "Steel castings -
Magnetic particle inspection". Compared with ISO 4986.2010, this standard has many
structural adjustments. Appendix A lists the comparison of Article numbers between
this standard and ISO 4986.2010.There are technical differences between this standard
and ISO 4986.2010.Table A.2 in Appendix A gives a list of the corresponding technical
differences and their causes.
This standard has also made the following editorial changes.
- MODIFY the standard names.
This standard was proposed by AND shall be under the jurisdiction of the National
Casting Standardization Technical Committee (SAC/TC 54).
Drafting organizations of this standard. Shenyang Foundry Research Institute Co., Ltd.,
Lanzhou Lanshi Inspection Technology Co., Ltd., Anhui Yingliu Casting Co., Ltd.,
Shanghai Aerospace Precision Machinery Research Institute, China Railway Baoqiao
Group Co., Ltd., Datang Boiler and Pressure Vessel Inspection Center Co., Ltd., Shared
Cast Steel Co., Ltd., Lanzhou Lanshi Group Co., Ltd. Casting and Forging Branch,
Anhui Provincial Institute of Mechanical Science, Shanghai Rail Transit Inspection
Technology Co., Ltd., Shanghai Honggang Power Station Equipment Casting and
Forging Co., Ltd., Zhejiang Yingluohua Equipment Manufacturing Co., Ltd., Qingdao
Lianshan Casting Co., Ltd., China Datang Group Science and Technology Research
Institute Co., Ltd. East China Electric Power Inspection Research Institute, China
Guangdong Nuclear Power Engineering Co., Ltd., Shanghai Materials Research
Institute, Gangyan Nak Inspection Technology Co., Ltd., Erzhong (Deyang) Heavy
Equipment Co., Ltd.
The main drafters of this standard. Li Xingjie, Zhang Zhaoqian, Jiang Chunhong, Shan
Yuhong, Du Yingliu, Shu Xuecheng, Zhang Yiru, Li Laiping, Wang Hanchao, Chen Hui,
Su Pengtao, Dong Yanlu, Ni Mansheng, Tuo Lingxi, Feng Zhourong, Guo Zongshan,
Zhang Yu, Wang Wei, Shi Fenghua, Chen Shu, Song Liang, Wu Tieming, Li Mengtao,
Wang Weiran, Lei Zhigang, Qiao Mu, Ding Jie, Zhang Yifeng, Shen Haihong, Fan
Luhui.
This standard replaces the standard previously issued as follows.
- GB/T 9444-2007.
Steel and iron castings - Magnetic particle inspection
1 Scope
This standard specifies the general requirements, acceptance criteria, indicated grading
and evaluation, re-inspection, inspection records and reports, etc., for magnetic particle
inspection of steel and iron castings.
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
3 Terms and definitions
The terms and definitions as defined in GB/T 12604.5, as well as the following terms
and definitions, apply to this document.
The indications where 2 linear indications are on one line AND the distance between
them is less than the longest indication length.
4 General requirements
When conducting magnetic particle inspection, the supplier and the buyer shall clarify
the following.
Observation conditions shall comply with the provisions of GB/T 5097.It shall be
observed visually or with a 3X maximum magnification.
5 Acceptance criteria
The quality grade is determined in advance. Different quality grade acceptance can be
selected, for the shape and size indication of different types of defects. The rectangular
evaluation area is 105 mm × 148 mm.
6 Indication ratings and evaluations
When the defect indication level is better than or equal to the quality grade specified in
the contract, it can be judged to be in compliance with this standard. When non-linear
indications, linear indications, or aligned indications appear simultaneously in the same
area of the casting, rate them according to Table 1 and Table 2, respectively.
7 Reinspection
Re-inspection is required when the following situations occur.
8 Inspection records and reports
Please refer to Appendix E for the recommended inspection report format in
Chinese and English, which can be modified according to the actual situation.
Appendix A
(Informative)
Comparison of Article numbers and technical differences with the original
standards when adopting international standards and their reasons
The comparison of Article numbers between this standard and ISO 4986.2010 is shown
in Table A.1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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