1. Ultrasonic detection
When the ultrasonic wave is spread in the detected raw material, the acoustic properties of the raw material and the transformation of the internal tissue will have a positive effect on the spread of the ultrasonic wave. After detecting the level and condition of the influence of the ultrasonic wave, the function and structure of the raw material can be understood.
2. Radiographic testing
Radiographic testing uses the difference in the amount of radiation transmitted through normal parts and defects to form the resolution of the blackness on the film.
3. Penetration detection
Penetration detection uses the capillary action of the liquid to penetrate the permeated liquid into the weaknesses of the surface of the solid raw material, and then suck the permeated liquid to the surface through the imaging agent to show the existence of the defects. Penetration inspection is suitable for various metal and ceramic workpieces, and the time from penetration operation to defect manifestation is relatively short, usually about half an hour. It is best to detect surface fatigue, stress erosion, and welding cracks, and it is better to directly measure the size of cracks.
4. Magnetic particle detection
Magnetic particle detection uses magnetic leakage at the defect to attract magnetic powder to form magnetic marks to provide the appearance of defects. It can detect surface and subsurface defects. The nature of the shortcomings is not difficult to distinguish. Paint and electroplated surfaces will not affect the vividness of detection.
Post time: Nov-10-2023