GB/T 12604.5-2020Non-destructive testing terminology magnetic particle testing (English PDF)

Foreword

GB/T 12604 "Terms of Non-destructive Testing" is divided into 11 parts.

---12604.1 Non-destructive testing term Ultrasonic testing

---12604.2 Non-destructive testing terminology radiographic testing

---12604.3 Non-destructive testing terminology penetration testing

---12604.4 Non-destructive testing terminology Acoustic emission testing

---12604.5 Non-destructive testing terminology magnetic particle testing

---12604.6 Non-destructive testing terms Eddy current testing

---12604.7 Non-destructive testing terminology leak detection

---12604.8 Non-destructive testing terminology neutron testing

---12604.9 Non-destructive testing terms infrared testing

---12604.10 Non-destructive testing terminology magnetic memory testing

---12604.11 Non-destructive testing terminology X-ray digital imaging testing

This part is Part 5 of GB/T 12604.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 12604.5-2008 "Non-destructive testing terminology magnetic particle testing", compared with GB/T 12604.5-2008, the main

The main technical changes are as follows.

--- Delete some terms and definitions, see Appendix NA for details;

--- Added some new terms and definitions, see Appendix NB for details.

The translation method used in this section is equivalent to ISO 12707.2016 "Vocabulary of Magnetic Particle Testing for Non-destructive Testing."

This section has made the following editorial changes.

---In order to be consistent with the existing standard series, the standard name is changed to "Non-destructive Testing Terminology Magnetic Particle Testing";

---Added informative appendix NA and informative appendix NB;

---Added the index.

This part is proposed and managed by the National Standardization Technical Committee for Nondestructive Testing (SAC/TC56).

Drafting organizations of this section. Shanghai Materials Research Institute, State Grid Shanghai Electric Power Research Institute, Tianjin Chengxinda Metal Testing Technology

Technology Co., Ltd., Jilin Electric Power Research Institute Co., Ltd.

1 Scope

This part of GB/T 12604 defines general terms related to magnetic particle testing.

2 Terms and definitions

2.1

Adjacentconductortechnique

Use the energized conductor rod or cable method to approach the magnetization technology of the detection surface.

2.2

Ampereturns

The product of the number of coil turns and the ampere value of the current flowing through the coil.

2.3

Arcingstrike

Due to the poor contact between the contacts and the test piece contact surface, the arc causes local burning of the test piece.

2.4

Carrierliquid

Liquid used to suspend magnetic powder (2.30) in wet technology.

2.5

Centralconductor

The conductor passing through the center of the aperture of the test piece.

2.6

Circularmagnetization

Magnetization technology that generates a circumferential closed magnetic field in the test piece, which is generated by the current passing through the test piece or the conductor surrounded by the test piece.

2.7

Coil technology coiltechnique

Use flexible coils or rigid coils to perform overall or partial magnetization of the test piece.

2.8

Colored detection medium coloured detection medium

Used for the medium detected under visible light.

2.9

Concentrate

The detection medium that needs to be diluted before detection.

2.10

Conditioning agent

It may contain wetting agents, defoamers and corrosion inhibitors to improve the performance of water-based detection media additives.

2.11

Constant current control

A device that stabilizes current.

2.12

Contact pad

It is usually made of copper and is placed on the electrode to improve the contact and contact surface contact and prevent arc burns.

Woven pad.

2.13

Continuousmagnetizationtechnique

The technology of applying the test medium while magnetizing the test piece.

2.14

Contrast enhancer contrastaidpaint

Apply a thin coating and film on the surface of the tested surface to improve the visibility of the colored detection medium (2.8).

2.15

Currentflowtechnique

The current passes through the magnetization technology of the inspected part.

2.16

Current generator currentgenerator

Power source that generates magnetizing current.

2.17

Detectionmedium

Magnetic suspension or magnetic powder used in magnetic particle testing (2.30).

2.18

Dry powder technology drypowdertechnique

The technology of magnetic particle detection using dry magnetic powder (2.30).

2.19

Fixedinstalation

Provide fixed equipment with specific magnetization method for the inspected parts.

2.20

Flexible coil technology flexiblecoiltechnique

The technology of winding an energized cable on the tested part for magnetization.

2.21

Fluorescentdetectionmedium

Under usually UV-A irradiation, the detection medium that excites visible light.

2.22

Magnetic field indicator fluxindicator

Contains an artificial discontinuous magnetic field direction detector.

2.23

Fluorescentstability

The ability of the detection medium to maintain fluorescence characteristics.

2.24

Inducedcurrentflowtechnique

The toroidal workpiece is used as the secondary coil of the transformer to generate a toroidal current inside.

2.25

Lift test

Performance verification of the magnetic attraction of the portable electromagnet.

2.26

Magneticbench

Fixed general-purpose magnetic particle detection device using flux technology (2.28) and/or energization technology (2.15).

2.27

Magneticextender

A ferromagnetic object placed at the end of the test piece to improve the magnetization performance.

2.28

Magneticflowtechnique

The technology in which magnetic flux is introduced into the inspected part to make it magnetize.

2.29

Magneticink

Magnetic powder (2.30) and carrier liquid mixed in a certain proportion to form a suspension liquid.

2.30

Magneticparticle

Ferromagnetic powder that can be absorbed by the leakage magnetic field.

2.31

Magnetic particle content

The content of magnetic powder (2.30) in the magnetic suspension.

2.32

Magnetic particle testing

A non-destructive testing method that uses magnetic fields and detection media to detect discontinuities on the surface and near surfaces of ferromagnetic materials.

2.33

Magneticwriting

When the inspected part and the magnetized workpiece are in contact with each other, a false display is formed due to local and random magnetization.

2.34

Magnetizingcoil

A rigid or flexible coil that winds the whole or part of the part.

2.35

Mechanicalstability

Detect the ability of the medium to maintain its characteristics under working conditions.

2.36

Multidirectionalmagnetization

A single magnetization of a multi-directional magnetic field is generated in the test piece.

2.37

Portable electromagnet (yoke) portableelectromagnet(yoke)

Hand-held device for flux technology (2.28).

2.38

Contact prods

Hand-held electrodes.

2.39

Residualfield

The magnetic flux density remaining in the ferromagnetic material after the end of magnetization.

2.40

Rigidcoiltechnique

Apply magnetization technology of fixed size coil.

2.41

Tangential field

The magnetic field distribution parallel to the surface of the test piece.

2.42

Tangential fieldstrength

The value of the intensity of the tangential magnetic field (2.41).

Note. The magnetic field strength refers to the force of the unit positive magnetic pole, or the magnetic field strength measured at a certain point, expressed in amperes per meter.

2.43

Threadedconductortechnique

The magnetization technology through the core rod or cable in the aperture of the inspected part.