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There are many testing methods for ndt wire rope tester, including ultrasonic testing, ray testing, acoustic emission testing, eddy current testing, electromagnetic testing, mechanical testing, acoustic testing, current testing, optical testing, vibration testing, etc. Until recent years, electromagnetic testing is the main method in the testing of ndt wire rope tester, and the other non-destructive testing technology is still limited to the laboratory research stage.

In view of LF type defect of local damage, magnetic flux leakage detection principle is adopted, that is, the defect of wire rope is detected by leakage magnetic field at the broken wire of wire rope.

In view of LMA type defect of metal cross-section area loss, the main magnetic detection method is adopted, that is, the change of metal cross-section area of wire rope is detected by measuring the magnetic flux passing through the inside of wire rope.

According to the different working principle of electromagnetic detection method, its magnetization can be divided into AC magnetization, DC magnetization and permanent magnetization. Because of its small size, light weight, convenient use and low detection cost, especially the development and application of new permanent magnet materials in recent years, the advantages of permanent magnet magnetization detection device are more obvious, so a large number of permanent magnet magnetization methods are used in electromagnetic detection method.

The commonly used sensor types are Hall element sensor and induction coil. In practical use, the output signal of Hall sensor is not affected by the moving speed of sensor, and the volume of Hall element is small, which has great advantages in measuring small gap space magnetic field. Therefore, the ndt wire rope tester has been widely used.

If you want to buy ndt device and do eddy current testing,welcome to call us,someone will answer the phone anytime.

With the deepening of isolation research and the development of isolation technology, nonlinear isolators suitable for various occasions have emerged. Laminated springs for the automotive industry are widely used in China. The principle is to use the dry friction between the steel plates to reduce the vibration and impact caused by the unevenness of the road. There are metal conical coil springs for the civil industry, as well as air springs.

During the entire deformation process of the wire rope shock mounts, sliding friction will occur between each wire rope, which consumes a large amount of energy and has a high equivalent damping ratio. Moreover, the wire rope anti vibration mounts exhibit nonlinear softening characteristics in a large deformation range, the stiffness decreases as the deformation increases, and the vibration isolation rate increases. Therefore, the good broadband isolation performance of the wire rope isolator for vibration damping is especially suitable for the application of vibration and shock environment isolation.

The wire rope shock mounts have only been developed in the last 30 years. Compared with the above-mentioned isolators, it has four distinct advantages:
①Nonlinear soft characteristics;
②Multi-directional isolation, high damping ratio;
③Corrosion, high and low temperature resistance;
④Compact structure and light weight.

At present, the common wire rope anti vibration mounts have several types of spiral, arch and ring. But in either case, they are made of stainless steel wire rope wound or bent. Their common advantage is the three-way protection of the equipment, reliable operation in high temperature and harsh environments, wide load range, unlimited storage period and service life. In terms of impact resistance, it can achieve maximum impact attenuation in a minimum space, and its vertical allowable deformation can reach 40~60% of the height of the vibration isolator. In foreign countries, they are used in the transportation of some equipment to replace the impact-resistant packaging of raw plastics and rubber. Rocket and missile transport vehicles also use it. In terms of ships, it passed the tests of light impact machines, heavy impact machines and floating impact platforms to meet the requirements of MIL-S-901 and MIL-STD-167. The wire rope isolator has excellent durability and fatigue. A vibration isolator with a diameter of 2.4 mm has been tested for up to 150 hours and seven million tests at 13 Hz and ±1.5 mm amplitude. The result is safe and sound.

For a 1.5mm wire rope isolators damping with a 1.5mm diameter, a sweep vibration test up to 10KHZ was performed, and the vibration isolation effect was 95%. This proves that the wire rope isolator for vibration damping can isolate small amplitude and structural noise. Wire rope anti vibration mounts are widely used in vibration and shock isolation of instruments, instruments, control boxes, etc., and some of the original rubber vibration isolators have been replaced by wire rope shock mounts.

Hoan is one of the leading wire rope isolator manufacturers in China, Welcome for enquiry.

GSET-551 Steel Wire Eddy Current Flaw Detector Brief

Using the eddy current signal processing method and high-performance DSP algorithm, the NDT wire rope tester detection ability of micro-crack is as high as 0.05mm deep crack.

Using computer digital technology and "digital eddy current detection technology" to achieve high-speed data processing capabilities, detection speed can be reached to 1~500m/min.  Technology can effectively suppress all kinds of interference signals. It has waveform, amplitude, phase, X-axis and Y-axis signals.

The professional "digital filtering" is adopted to effectively suppress the interference signal in the field and ensure the accuracy and stability of the detection.

Features of GSET-551 Steel Wire Eddy Current Flaw Detector

1. LF testing sensitivity

The detector detects the minimum metal cross-sectional area change and the minimum length of the damage length corresponding to the local damage.

2.  LMA testing sensitivity

The detector detects the minimum metal cross-sectional area change and the damage length minimum size corresponding to the metal cross-sectional area loss.

3.  LMA repeatability error

The maximum value of the random error obtained by performing multiple consecutive measurements of the same metal cross-sectional area change in the same test sample under the same test environment and conditions within the instrument range.

4.  LMA linearity error

Within the range of the instrument, the metal cross-sectional area of the test sample is linearly proportional to the absolute value of the maximum deviation between the measured curve of the instrument and the calibration curve fitted by the measured value of the cross-sectional area of the metal.

5.  LMA error of indication

The value of the metal cross-sectional area loss measured by the instrument minus the actual value of the metal cross-sectional area loss within the instrument's range.

6.  LMA linearity error

In the range of the instrument range, under the condition of the length loss of the cross-sectional area of the metal, the cross-sectional area loss of the metal on the wire rope measured by the detector is matched with the value of the loss of the cross-sectional area of a group of wire ropes measured by the instrument. The absolute value of the maximum deviation between the calibration curves.

7. Testing distance resolution

The detector is capable of detecting the resolved minimum distance.

8. Dual function instrument

The detector can detect and display changes in metal cross-sectional area loss (LMA) on one channel, and detect and display local damage (LF) on the other channel. The detector recording device can be a computer, graphic recorder or other matches. device.

9. Single-function instrument

The detector cannot simultaneously detect and display metal cross-sectional area loss changes and local damage, and can only detect and display one of them. The detector recording signal device can be a computer, a graphic recorder or other matching devices.

10. Wire rope electromagnetic tester

The detector principle and composition meet the requirements of the GB/T 21837-2008 standard, and it has a detector for detecting distance display, data storage or recording function.

GSET-551 Steel Wire Eddy Current Flaw Detector performance

Nanjing BOKENA Automation System Co., Ltd., originated from the eddy current testing laboratory of the Nanjing University of Technology. It is one of the most professional ndt testing equipment suppliers in China. We sincerely invite and welcome people from all around the world to invest and create more values together.