Method for removing interference bubbles in metallurgical material water immersion ultrasonic detection

The invention discloses a method for removing interference bubbles in metallurgical material water immersion ultrasonic detection. A waveform comparison method is adopted, and the method comprises the following steps: extracting waveforms of an ultrasonic focusing probe under three conditions by utilizing ultrasonic water immersion C-scanning equipment: the ultrasonic focusing probe is in the air, bubbles are formed on the semi-spherical surface after the ultrasonic focusing probe vertically enters coupling water, and water drops are formed on the semi-spherical surface after the ultrasonic focusing probe is out of water; putting a sample to be detected into the ultrasonic water immersion C-scanning equipment, starting a water immersion ultrasonic focusing probe to move towards coupling water, continuously collecting the waveform of the water immersion ultrasonic focusing probe, and comparing the waveform with three waveforms collected in advance; when the waveform changes, indicating that the water immersion