The key to the production of the physical comparison test block is that the defect is not missed according to the sensitivity of the flaw detection, and the clutter is eliminated and the harmful defects are reliably detected. The material of the test block is made of the same material as the spring to be inspected, and it is confirmed that there is no defect after magnetic particle inspection. A V-shaped groove of 0.5 mm depth is processed at the highest point on the outer surface of the middle portion of the spring. Flaw detection operation Flaw detection operation can be carried out as follows: 1 Clean the end face of the spring support ring, and do not allow oil, paint and oxide scales. If the end face of the support ring is uneven and the flaw detection is affected, the detection surface can be polished. 2 Adjust the inspection range of the instrument to ensure that the detection range can check the lower end angle of the spring, that is, the lower end corner reflection wave can be generated, and the detection sensitivity of the 0.5mm V-shaped groove of the spring test block can be used to make the reflection wave of the 0.5mm V-shaped groove reach 80% of the full range of the instrument. . 3 Evenly apply the coupling agent evenly on the end face of the spring support ring, place the probe on the end face of the spring support ring and press it slightly to ensure that the probe and the end face of the spring support ring are in full contact, then move slowly back and forth, while swinging at a certain angle, the probe is at Each spring support end face contact time is not less than 3 s. 4 and each flaw detection is detected once on the end faces of the two support rings of the spring.
In the process of flaw detection, if the defect echo height is less than 80%, it is judged as qualified and can be used. If the defect echo height is greater than 80%, the digital ultrasonic flaw detector reads the defect position through the positioning gate, approximates the position of the defect on the spring, and gently taps the tempering agent with a rhythm to find the reflected wave on the spring. The reflection point is then detected on the end face of the other support ring of the spring. If there is a reflection waveform, the hand is also tapped to find the reflection point. If the reflection point of the two inspections is at the same position, or the defect position measured at both ends If the sum is the total length of the spring, it can be judged as a defect. If it does not match the total length of the spring, tap the hand to find the position of the reflection point, and confirm with the magnetic particle inspection.
PTZ Inspection Camera,diameter 75mm camera lens more products features as below:
Rotary Lens diameter:70mm,lens length:160mm,radial direction : 220°,axial direction :360°
10 times electronic amplification,zoom Ratio:100,automatic focusing(special function)
Intensity of illumination:100000Lux, 1/3ccd light-sensitive chips, Pixel 480000 700TV wire(pixel more higher than other products)
IP68 waterproof grade,up to 10m.
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PTZ Inspection Camera
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ZHENGZHOU JIUTAI TECHNOLOGY CO.,LTD , https://www.jiutaiendoscope.com