Ultrasonic flaw detection is a method of inspecting part defects by using ultrasonic energy to penetrate into the depths of metal materials, and when one section enters another section, the reflection occurs at the edge of the interface. When the ultrasonic beam passes from the surface of the part to the probe to Inside the metal, when it encounters a defect and the bottom surface of the part, reflected waves are generated respectively, and pulse waveforms are formed on the fluorescent screen, and the position and size of the defects are judged according to these pulse waveforms.
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