GTET-02 Cylinder Liner Eddy Current Testing Machine
We have eddy current machine for sale!
GTET-02 Cylinder Liner Eddy Current Testing Machine Introduction
- 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.
BKNis an eddy current testing benchmark enterprise and has long been committed to the development and production of bearing hardness and crack eddy current screening equipment. If you want to know more details or want a quotation, just feel free to contact us!
在线联系供应商
Other supplier products
 |
Benchtop Magnetic Flux Leakage Testing Equipment | MFI Magnetic flux leakage test refers to the formation of a leakage magnetic field on the surface of a test piece after it is magnetized due to def... |
 |
Connecting rod hardness eddy current sorting machine LGYDFX-01 | The connecting rod hardness eddy current sorting machinehas a calibration device, input compensation parameters, automatic/manual temperature compe... |
 |
Connecting rod hardness eddy current sorting machine LGYDFX-01 | The connecting rod hardness eddy current sorting machinehas a calibration device, input compensation parameters, automatic/manual temperature compe... |
 |
Automatic EDM Notch | Automatic EDM Notchis a kind of EDM notch machine, and it is the ideal equipment for processing artificial defects of pipe rod standards in non-des... |
 |
Bearing Ring Crack and Hardness Combination Flaw Detector TQJC-02 | During the processing of bearing rings, various defects are often generated on the surface or inside, and cracks occupy a large proportion of all d... |
Same products
 |
Laser Cutting Service China METAL FINISHING | 卖方: 大连卓晟科技有限公司 | Laser Cutting Service ChinaMETAL FINISHING Laser Cutting Service ChinaMETAL FINISHING-China Dal... |
 |
Intake Manifold in Car Engine | 卖方: SDZ AUTO PARTS CO.,LTD | The car intake manifoldis a component of an automobile engine that supplies a mixture of air to d... |
 |
Heavy Duty Thermostats | 卖方: SDZ AUTO PARTS CO.,LTD | Apart from passenger cars, we also supply electric thermostat for car applied for buses and truck... |
 |
Engine Water Pump | 卖方: SDZ AUTO PARTS CO.,LTD | The water pump is powered by the engine and circulates the liquid coolant through the engine cool... |
 |
Engine Valve Cover | 卖方: SDZ AUTO PARTS CO.,LTD | A cylinder head cover, especially one used to cover an internal combustion engine, has multiple f... |
