Ultrasonic detection metal damage detection device

Abstract

The invention discloses an ultrasonic-test metal damage detection device. The device structurally comprises a main engine, a lead and a damage detection body, wherein the damage detection body is of aring-shaped structure; a signal end of the damage detection body is electrically connected with a signal end of the main engine through the lead; the damage detection body comprises a palm flow body,two damage detection heads, a coating agent interlayer, a scraping agent interlayer, an inner ring, an outer ring and a grain body clamping seat; and the two damage detection heads are fixedly arranged at two sides of the upper end of the coating agent interlayer and are electrically connected with the lead. According to the device, the traditional rod-shaped probes are changed and the damage detection body is of the ring-shaped structure; and during the detection, the ring-shaped damage detection body can be completely sealed on the surfaces of workpieces, and the width of the damage detection body is 20-30 cm, so that non-contact areas can be greatly prevented from being polluted by the environment and then the finish between contact layers is ensured during the detection.

Description

technical field [0001] The invention relates to the field of ultrasonic testing, in particular to a metal flaw detection device for ultrasonic testing. Background technique [0002] In real life, most of the pipes that people often see are made of metal. When there is a slight damage to the pipe, such as cracks, dents and other scars that cannot be distinguished by the human eye, it is necessary to use a metal detector to damage it. For detection, the common ultrasonic flaw detection technology mainly uses the principle of the characteristic change of the sound pulse at the defect to detect, while the existing technology often uses the probe to directly contact the surface of the workpiece, and the probe is made of a rod-shaped structure, so: [0003] In the contact detection method adopted, due to the existence of a large amount of dust in the air, the non-contact area of ​​the probe is easy to re-contaminate the dust on the workpiece, resulting in that the space between th...

AI Technical Summary

Problems solved by technology

[0003] In the contact detection method adopted, due to the existence of a large amount of dust in the air, the non-contact area of ​​the probe is easy to re-contaminate the dust on the workpiece, resulting in that the space between the contact layers cannot be completely cleaned during detection, making it difficult for sound waves to enter the workpiece, and then affect the detection results;

[0004] In ultrasonic testing, a coupling agent is required to fill the gap between the probe and the surface to be inspected. At present, manual smearing is generally used. Manual smearing can easily cause blind areas to be completely filled, resulting in insufficient acoustic coupling, which affects the judgment of the test results.

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