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In modern industrial manufacturing, eddy current testing technology has become an important tool for ensuring the surface quality of forged steel rolls. Eddy current roll surface detection is based on...
The ultrasonic pipe testing equipment system is suitable for the automatic detection of various internal and external defects of steel pipes. The principle of ultrasonic flaw detection is that after the ultrasonic wave is coupled to the steel pipe through water, the incident propagation will cause ultrasonic reflection when there is a defect in the pipe. The ultrasonic instrument will alarm the ultrasonic reflected signal after realizing the signal to realize the automatic detection of the defect; Transmission ultrasonic pipe testing equipment is currently the advanced detection equipment in China.
Rotating probe configuration
1. Probe configuration on the spindle section 1
A total of 3 probe adjustment frames are placed on section 1 at 120°apart. Each of the adjustment frames is equipped with a 2-channel combined ultrasonic line focusing longitudinal probe to detect longitudinal defects of the steel tube in a clockwise direction.
Detection of defects: Vertical and vertical defects in the steel pipe are detected in a clockwise direction.
Center frequency: 5.0MHz±10%
Coupling method: water immersion method
Quantity: 3 sets of probes, each consisting of 2 wafers. These 3 sets of probes are evenly distributed in the circumferential direction of the workpiece, spaced 120° apart, on the same section. A total of 6 channels of water immersion probes.
2.Probe configuration on the main shaft section2
A total 3 probe adjustment frames are placed on section2, separated by120°, and a 2-channel combined ultrasonic line focusing longitudinal probe is arranged on each adjustment frame to detect longitudinal defects of the steel pipe counterclockwise.
Detection of defects: counter-clockwise detection of longitudinal defects inside and outside the steel pipe.
the center frequency: 5.0MHz ± 10%
coupling method: water immersion method
Quantity: 3 sets of probes, each consisting of 2 wafers. These 2 sets of probes are evenly distributed in the circumferential direction of the workpiece, spaced 120° apart, on the same section. A total of 6 channels of water immersion probes.
Defect detection standard
Inspection of Longitudinal and Transverse Defects in Ultrasound Steel Pipe: GB/T5777-2008 L2(C5) Standard
Number of channels | 12 channels |
Flaw detection speed | 40m/min |
Total gain | 100dB，step 0.5dB |
Working mode | Single probe transmitting, receiving or dual probe transmitting and receiving separately |
Sensitivity margin | ≥50dB |
resolution | ≥26dB |
Dynamic range | ≥30dB |
Scanning range | 0～5000mm |
Frequency range | 0.5～20MHz |
Sampling range | 250MHz |
Repeat frequency | Signal channel100Hz～4KHzadjustable |
Vertical linearity | ≤2% |
Horizontal linearity | ≤1% |
Detection method | Full-wave, positive half-wave, negative half-wave |
Gate setting | 3 gates per channel, A and B are defect gates, and c is an Interface tracking gate |
Alarm indication | Alarm colour display and audible alarm for each channel A, B, C |
Delay alarm | Two ways, Delay time0.1～10S, step 0.1S waveform storage, the unlimited number for waveform playback, printing and report generation |
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