Ultrasonic Immersion Testing
Ultrasonic immersion testing: The test object and probes are immersed in water to ensure stable sound transmission. Used for automated testing of semi-finished products.
Physical-Chemical Mechanism of Action
Immersion ultrasonic testing uses water as a medium to transmit sound waves between the probes and the metal. Water provides high acoustic conductivity and minimizes reflections at the surface.
Metallurgical Relevance & Welding Risks
This technique is particularly useful for inspecting semi-finished products because it can image complex geometries well. Incorrect water coverage or missing contact surfaces can lead to inaccurate results and may miss potential defects.
Workshop Practice & Action Instructions
• Make sure the water in the immersion tank is clear and free of air bubbles.
• Ensure that the probes have full contact with the metal.
• Use constant water coverage over the test object.
• Set the ultrasonic frequency and amplitude according to the material type.