What are the detection methods of oil casings

Oil casing become more important in the industry. About oil casing detection, we don't know more about it. Let's look here to know more.

1. Ultrasonic detection When the ultrasonic wave is disseminated in the tested material, the acoustic characteristics of the material and the change of the internal structure will have a certain impact on the dissemination of the ultrasonic wave. By detecting the affected level and situation of the ultrasonic wave, we can understand the changes in the function and structure of the material.

2. Radiation detection uses the difference in the amount of radiation transmitted through the normal part and the defect to form the resolution of the blackness on the film.

3. Penetration testing is to use the capillary action of the liquid to penetrate the permeate into the open defects on the surface of the solid raw material, and then suck the permeated permeate to the surface through the imaging agent to reveal the existence of defects. Penetration testing is suitable for various metal and ceramic workpieces, and the time from penetration application to defect appearance is relatively short, usually about half an hour. It can detect surface fatigue, stress corrosion, and welding cracks, and can directly measure the size of cracks.

4. Magnetic Particle Inspection is to use magnetic flux leakage at defects to absorb the magnetic powder and form magnetic marks to provide defect display. It can detect surface and sub-surface defects, and the nature of defects is easy to distinguish. Paint and electroplating surfaces will not affect the vividness of detection.