Eddy Current Testing Equipment

• 
• 
• 
• 

We have eddy current machine for sale!

GTET-02 Cylinder Liner Eddy Current Testing Machine Introduction

3. The rate of missed standard defect is 0%; the rate of false positives (only misidentified products are judged as non-conforming products) ≤1%.

Detection method

Eddy current testing is to connect the conductor to the coil with alternating current. The alternating magnetic field is established by the coil. The alternating magnetic field passes through the conductor and electromagnetic induction is applied to establish an eddy current in the conductor.

The eddy currents in the conductor also generate their own magnetic field, and the action of the eddy current magnetic field changes the strength of the original magnetic field, which in turn causes a change in the coil voltage and impedance.

When a defect occurs on the surface or near-surface of the conductor, the intensity and distribution of the eddy current will be affected. The change of the eddy current causes a change in the voltage and impedance of the detecting coil. According to this change, the existence of the defect in the conductor can be indirectly known.

Since the shape of the test piece is different and the detection position is different, the shape of the test coil is different from that of the test piece. In order to meet various testing needs, various detection coils and eddy current testing instruments have been designed.

In eddy current testing, the detection coil is used to establish an alternating magnetic field; the energy is transmitted to the conductor to be inspected, and the alternating magnetic field established by the eddy current is used to obtain the quality information in the detected conductor. Therefore, the detection coil is a transducer.

The shape, size and technical parameters of the test coil are critical to the final inspection. In eddy current testing, the type of detection coil is often selected according to the shape, size, material, and quality requirements (testing standards) to be detected. There are three types of commonly used detection coils.

1) Through coil

The through the coil is a coil that detects the sample to be tested and put it in the coil and is suitable for flaw detection of tubes, rods, and wires. Since the magnetic field generated by the coil acts first on the outer wall of the sample, the effect of detecting the outer wall defect is good, and the detection of the inner wall defect is performed by the penetration. In general, the detection sensitivity of the inner wall defect is lower than that of the outer wall. The drawback of thick-walled tubing is that it cannot be detected using an externally wound coil.

2) Interpolated coil

The interposer coil is a coil placed inside the tube for inspection. It is used to inspect the defects of thick walls or the inner walls of the borehole. It is also used to check the quality of the tubes in the complete equipment, such as the in-service inspection of heat exchanger tubes.

3) Probe coil

The probe coil is a coil placed on the surface of the sample for inspection. It is not only suitable for surface scanning inspection of simple plates, slabs, billets, round billets, bars and large diameter pipes, but also for complex shapes. Inspection of mechanical parts. Compared with the through the coil, the probe coil is suitable for detecting small surface defects due to its small volume and small field action range.

As one of the most professional ndt testing equipment suppliersin China, BKNhas formed a social scientific research cooperation network with well-known universities and research institutes in China, which has a strong R&D and production capacity. It guarantees the leading and word-class technology position of BKN industrial nondestructive testing technology.

Другие товары поставщика

	Benchtop Magnetic Flux Leakage Testing Equipment	Benchtop magnetic testing equipment MFI Magnetic flux leakage test refers to the formation of a leakage magnetic field on the surface of a test pi...
	Steel Pipe Testing	Steel having a hollow section that is much longer than the diameter or circumference. According to the cross-sectional shape, it is divided into ro...
	LGET-553 Aluminum Tube Eddy Current Flaw Detector Brief Introduction	The aluminum tube is a type of non-ferrous metal which may have one or more closed holes which are thick and uniform in cross-section. It is widely...
	Connecting rod hardness vortex sorting machine LGYDFX-01	The connecting rod hardness eddy current testing machine has a calibration device, input compensation parameters, automatic/manual temperature comp...
	Eddy Current Testing Equipment for Tube, Bar and Wire	ECT Eddy current testing is a ndt testing equipment, which mainly uses the electromagnetic field and electromagnetic induction between metals to de...

Похожие товары

	Bi Concave Lens	Продавец: Changchun Sunday Optics Co., Ltd.	Bi Concave Lens The double concave lenses with the negative focal length, these lenses are used ...
	Achromatic Doublet Lens	Продавец: Changchun Sunday Optics Co., Ltd.	Achromatic Doublet Lens Achromatic lenses are cemented with two lenses mainly used to reduced va...
	Spherical Lens	Продавец: Changchun Sunday Optics Co., Ltd.	Spherical Lens Spherical Lenses Manufacturer-Sunday Optics Changchun Sunday Optics Co., ltdmanu...
	Optical Design	Продавец: Changchun Sunday Optics Co., Ltd.	Optical Design Optical System Architecture Design ● Structural Design ● Stray Light Analys...
	Optical Assembly	Продавец: Changchun Sunday Optics Co., Ltd.	Optical Assembly Optical assemblies bring together multiple components to form complete, high-pe...