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

2.1 Adjacent conductor technique

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

2.2 Ampere turns

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

2.3 Arcing strike

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 Carrier liquid

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

2.5 Central conductor

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

2.6 Circular magnetization

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

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

2.8 Colored 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 Continuous magnetization technique

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

2.14 Contrast enhancer

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 Current flow technique

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

2.16 Current generator

Power source that generates magnetizing current.

2.17 Detection medium

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

2.18 Dry powder technology

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

2.19 Fixed installation

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

2.20 Flexible coil technology

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

2.21 Fluorescent detection medium

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

2.22 Magnetic field indicator

Contains an artificial discontinuous magnetic field direction detector.

2.23 Fluorescent stability

The ability of the detection medium to maintain fluorescence characteristics.

2.24 Induced current flow technique

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 Magnetic bench

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

2.27 Magnetic extender

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

2.28 Magnetic flow technique

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

2.29 Magnetic ink

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

2.30 Magnetic particle

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 Magnetic writing

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 Magnetizing coil

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

2.35 Mechanical stability

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

2.36 Multidirectional magnetization

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

2.37 Portable electromagnet (yoke)

Hand-held device for flux technology (2.28).

2.38 Contact prods

Hand-held electrodes.

2.39 Residual field

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

2.40 Rigid coil technique

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 field strength

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 Threaded conductor technique

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