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GB/T 25757-2010: Non-destructive testing -- Test methods of performance characteristics of automatic magnetic flux leakage testing systems for steel tubes
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 25757-2010 | English | 169 |
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Non-destructive testing -- Test methods of performance characteristics of automatic magnetic flux leakage testing systems for steel tubes
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GB/T 25757-2010
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Basic data | Standard ID | GB/T 25757-2010 (GB/T25757-2010) | | Description (Translated English) | Non-destructive testing -- Test methods of performance characteristics of automatic magnetic flux leakage testing systems for steel tubes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 19.100 | | Word Count Estimation | 7,744 | | Date of Issue | 2010-12-23 | | Date of Implementation | 2011-10-01 | | Quoted Standard | GB/T 12606 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.10 (Total No.165) | | 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 test content and test methods for seamless and welded steel pipe ferromagnetic (except submerged arc welded) automatic magnetic flux leakage detection systems overall performance. This standard applies to the use of comparative samples specified in this standard in the detection field conditions to test the overall performance of magnetic steel automatic leak detection system. This standard also applies to the end, or with thick steel pipe couplings, automated magnetic flux leakage detection system with comprehensive performance testing of oil pipes. Ferromagnetic flux leakage detection system automatically bars comprehensive performance testing can refer to this standard. | GB/T 25757-2010: Non-destructive testing -- Test methods of performance characteristics of automatic magnetic flux leakage testing systems for steel tubes
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Non-destructive testing. Test methods of performance characteristics of automatic magnetic flux leakage testing systems for steel tubes
ICS 19.100
J04
National Standards of People's Republic of China
Non-destructive testing of steel tubes automatic magnetic flux leakage detection system
Comprehensive Performance Test Method
Issued on. 2010-12-23
2011-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard non-destructive testing by the National Standardization Technical Committee (SAC/TC56) and focal points.
This standard was drafted. China Special Equipment Inspection and Research Institute, Hefei Simmel Detection Equipment Co., Ltd., Hefei University of Technology, Division of Haitai
Detection Technology Co., Ltd. Hefei big test.
The main drafters of this standard. HE Fu Yun, Ding Keqin, Chen Bin, Lin Shuqing, where arrows.
Non-destructive testing of steel tubes automatic magnetic flux leakage detection system
Comprehensive Performance Test Method
1 Scope
This standard specifies the test content ferromagnetism of seamless and welded steel pipe (except submerged arc welded) Automatic magnetic flux leakage testing of system performance
And test methods.
This standard applies to the use of the comparative samples specified in this standard under field conditions to test the detection of magnetic flux leakage pipe automatic detection system Fully
Sealing properties.
This standard also applies to thick ends or with steel pipe couplings, oil leakage magnetic detection system with automatic comprehensive performance test tube.
Ferromagnetic steel bar automatic magnetic flux leakage testing system performance tests also can refer to this standard.
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 12606 pipe magnetic flux leakage inspection method (GB/T 12606-1999, eqv ISO 9402. 1989, ISO 9598. 1989)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Pipe automatic magnetic flux leakage detection system automaticmagneticfluxleakagetestingsystemsforsteeltubes
MFL detection means after the ferromagnetic material is magnetized, inner and outer surfaces due to material defects or internal leakage magnetic field and the formation of defects on the surface, through
Excessive leakage field to detect defects discovered a method for non-destructive testing of defects.
Pipe automatic magnetic flux leakage detection system is divided in the circumferential direction (transverse) detector or axial (longitudinal) detecting means commonly used to two kinds of axial and circumferential
Combining means in order to achieve the test results more comprehensive and accurate aim.
3.2
Degaussing demagnetize
Ferromagnetic steel tubes in magnetic flux leakage detection system automatically by an axial magnetic field magnetization, the presence of residual magnetic field in the tube after leaving the detection system,
Residual magnetic field pipe to eliminate the operation of said degaussing.
Pipe automatic transverse magnetic flux leakage detection system is usually configured with degaussing device.
4 Test Conditions
4.1 pairs of test line requirements
Since entering the pipe until it is fully automatic by magnetic flux leakage inspection system during its axis should be in a straight line.
4.2 Working speed detection system
The test tube automated magnetic flux leakage detection system should be at normal operating speed, the operating speed of change can not exceed 10% test
To record keeping magnetizing current, speed detection, signal gain, suspicious waste electrical signals and alarms sentenced equality argument.
4.3 Other test conditions
Other test conditions shall comply with GB/T 12606 of.
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