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GB/T 37400.15-2019: Heavy mechanical general technical specification -- Part 15: Nondestructive test of steel forgings
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Heavy mechanical general technical specification -- Part 15: Nondestructive test of steel forgings
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GB/T 37400.15-2019
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Basic data | Standard ID | GB/T 37400.15-2019 (GB/T37400.15-2019) | | Description (Translated English) | Heavy mechanical general technical specification -- Part 15: Nondestructive test of steel forgings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 25.010 | | Word Count Estimation | 34,360 | | Date of Issue | 2019-05-10 | | Date of Implementation | 2019-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37400.15-2019: Heavy mechanical general technical specification -- Part 15: Nondestructive test of steel forgings
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Heavy mechanical general technical specification--Part 15. Nondestructive test of steel forgings
ICS 25.010
J04
National Standards of People's Republic of China
General technical conditions for heavy machinery
Part 15. Non-destructive testing of forged steel parts
Part 15. Nondestructivetestofsteelforgings
Published on.2019-05-10
2019-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 General requirements 2
4.1 Selection Principle 2
4.2 Detection File 2
4.3 Testing staff 3
5 Ultrasonic testing and its quality level 3
5.1 Inspection basis 3
5.2 Terms of Agreement 3
5.3 Preparation of test procedures 3
5.4 Detection System 4
5.5 Surface Status 5
5.6 Detection timing 5
5.7 Detection 5
5.8 Detection sensitivity 5
5.9 Determination of the probability of forgings 6
5.10 Determination of material attenuation coefficient 6
5.11 Calculation of sound beam diameter 7
5.12 Defect size determination 7
5.13 Record of defects 8
5.14 Quality Level 8
5.15 Test Report 10
6 Magnetic particle testing and its quality level 11
6.1 Inspection basis 11
6.2 Agreement clause 11
6.3 Safety and Environmental Requirements 11
6.4 Detection surface requirements 11
6.5 Inspection period 11
6.6 Equipment and equipment 11
6.7 Detection method 12
6.8 Magnetization 13
6.9 Magnetization parameters 14
6.10 How to use the sensitivity test strip 16
6.11 Magnetic field strength 17
6.12 Application of magnetic powder and magnetic suspension 17
6.13 Observation conditions 17
6.14 Demagnetization 17
6.15 Re-inspection 17
6.16 Magnetic Trace Classification 17
6.17 Quality Level 18
6.18 Inspection report 19
7 Penetration testing and its quality rating 19
7.1 Inspection basis 19
7.2 Test surface requirements 19
7.3 Testing materials 19
7.4 Comparison test block 19
7.5 Classification and selection of penetration test methods 20
7.6 Detection 20
7.7 Trace classification 22
7.8 Recording limits and quality levels 23
7.9 Inspection report 24
Appendix A (Normative Appendix) Forging steel V-groove DAC detection method and quality acceptance requirements 25
Appendix B (Normative) Common Sensitivity Test Strips (Block) 27
Foreword
GB/T 37400 "General Technical Conditions for Heavy Machinery" is divided into 16 parts.
--- Part 1. Product inspection;
--- Part 2. Flame cutting parts;
---Part 3. Welded parts;
---Part 4. Cast iron parts;
---Part 5. Steel castings;
---Part 6. Non-ferrous metal castings;
---Part 7. Repair welding of steel castings;
---Part 8. Forgings;
---Part 9. Machining parts;
--- Part 10. Assembly;
--- Part 11. piping;
--- Part 12. Painting;
--- Part 13. Packaging;
---Part 14. Non-destructive testing of steel castings;
---Part 15. Non-destructive testing of forged steel parts;
--- Part 16. Hydraulic system.
This part is the 15th part of GB/T 37400.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part is proposed and managed by the National Technical Committee for Metallurgical Equipment Standardization (SAC/TC409).
This section drafted by. Erzhong (Deyang) Heavy Equipment Co., Ltd., Yizhong Group Dalian Engineering Technology Co., Ltd., MCC Shaanxi Heavy Industry
Equipment Co., Ltd., Taiyuan Heavy Industry Co., Ltd., China National Heavy Machinery Research Institute Co., Ltd.
Drafters of this section. Yang Lan, Shao Yimin, Xia Juan, Hu Juefan, Jin Jiliang, Li Xuemin, Liu Zhen, Yan Lifeng, Zhang Hui, Xu Changqing, Fan Yuke.
General technical conditions for heavy machinery
Part 15. Non-destructive testing of forged steel parts
1 Scope
This part of GB/T 37400 specifies the ultrasonic, magnetic powder and penetration testing methods and quality grades of forged steel parts.
This section applies to non-destructive testing of forged steel for heavy machinery.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 5097 Non-destructive testing for penetration testing and magnetic particle testing conditions
GB/T 9445 Non-destructive testing personnel qualification and certification
GB/T 11259 Preparation and verification of steel comparison test blocks for ultrasonic inspection
GB/T 12604.1 Non-destructive testing terminology ultrasonic testing
GB/T 12604.3 Non-destructive testing terminology penetration test
GB/T 12604.5 Non-destructive testing terminology magnetic particle testing
GB/T 15822.1 Non-destructive testing - Magnetic particle testing - Part 1. General
GB/T 15822.2 Non-destructive testing - Magnetic particle testing - Part 2
GB/T 15822.3 Non-destructive testing - Magnetic particle testing - Part 3
GB/T 18851.2 Non-destructive testing - Part 2. Examination of osmotic materials
GB/T 18851.3 Non-destructive testing - Penetration testing - Part 3. Reference test block
GB/T 18851.4 Non-destructive testing - Penetration testing - Part 4. Equipment
GB/T 18851.5 Non-destructive testing - Penetration testing - Part 5. Penetration testing at temperatures above 50 ° C
GB/T 20737 General Terms and Definitions for Nondestructive Testing
GB/T 23907-2009 Non-destructive testing magnetic particle testing test piece
GB/T 27664.1 Non-destructive testing - Ultrasonic testing equipment - Performance and testing - Part 1
Non-destructive testing - Performance and testing of ultrasonic testing equipment - Part 2. Probes
GB/T 27664.3 Non-destructive testing - Performance testing and testing - Part 3. Combined equipment
ISO 16811 Non-destructive testing Ultrasonic testing sensitivity and range settings (Non-destructive testing-Ultrasonic
testing-Sensitivityandrangesetting)
3 Terms and definitions
GB/T 12604.1, GB/T 12604.3, GB/T 12604.5 and GB/T 20737 and the following terms and definitions apply to
This document.
3.1
Non-extended defect reflectorswithnomeasurablesize
When the probe moves smoothly, the defect echo falls uniformly in all directions, and the defect maximum echo amplitude is greater than or equal to the defect of the initial recording limit.
see picture 1.
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