.

GTET-02 Cylinder Liner Eddy Current Testing Machine

GTET-02 Cylinder Liner Eddy Current Machine Introduction

  1. 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 ndt inspection 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.

We have eddy current machine for sale, contact us for more details!



在线联系供应商

至: Nanjing BKN Automation System Co.,LTD
Your E-mail:
消息正文:


Send to other suppliers

Other supplier products

Eddy Current Testing Equipment for Tube, Bar and Wire
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...
Eddy Current Testing Equipment
Eddy Current Testing Equipment Are you looking for a eddy current testing machine manufacturer? BKN is one of the most professional eddy current testing equipment manufacturersin...
BKNET-0102 Welded Pipe Eddy Current Flaw Detector
BKNET-0102 Welded Pipe Eddy Current Flaw Detector Non destructive weld testing equipment is the use of eddy current technology to test the welded pipe, this type of testing is based on the premise ...
Portable Magnetic Flux Leakage Testing Equipment
Portable Magnetic Flux Leakage Testing Equipment MFLequipmentrefers to the formation of a leakage magnetic field on the surface of a test piece after it is magnetized due to defects on the surface...
MFL101 Tank Floor MFL Scanner
MFL101 Tank Floor MFL Scanner Technical Characteristics ofMFL101 Tank Floor MFL Scanner Unique full modular structure, from the main body of the computer mechanism the handle o...
供应产品

Same products

Walk In Environmental Chamber
Walk In Environmental Chamber 卖方: Guangdong ALI Testing Equipment Co,.Ltd Application JOEO Multi-functional walk in environmental chamber is the perfect testing place for ...
Solid Walk In Test Chamber
Solid Walk In Test Chamber 卖方: Guangdong ALI Testing Equipment Co,.Ltd Application: JOEO solid walk in test chamber is an all-welded test chamber with an integrated con...
Compact Walk In Environmental Chamber
Compact Walk In Environmental Chamber 卖方: Guangdong ALI Testing Equipment Co,.Ltd Application JOEO compact walk in environmental chamber is used to test full-size solar panels or ...
Drying Walk In Environmental Chamber
Drying Walk In Environmental Chamber 卖方: Guangdong ALI Testing Equipment Co,.Ltd Application Dry walk in environmental chambers are a special type of walk in environmental chambe...
Walk In Test Chamber For CATL Battery
Walk In Test Chamber For CATL Battery 卖方: Guangdong ALI Testing Equipment Co,.Ltd CATL Battery Walk In Test Chamber JOEO Walk In Test Chamber's temperature cyclic stress screening...