High-Energy Computed Tomography
High-energy computed tomography uses high-energy X-rays to visualize internal structures of thick-walled metal parts. This enables precise dimensions and flatness control.
Physical-Chemical Mechanism of Action
High-energy computed tomography uses high-energy X-rays that pass through the metal part. The density of the materials affects penetration and creates a specific shading.
Metallurgical Relevance & Risks in Welding
This technique is especially useful for inspecting castings and forgings with complex geometries. It can reveal flatness defects, inclusions, or other defects before they lead to serious failures. However, an inadequate image can lead to misinterpretation and cause wrong decisions in shop management.
Workshop Practice & Instructions
Use high-energy CT for testing castings with wall thickness over 5 cm. Make sure the unit is properly calibrated and the tube voltage is set to the specified value (typically between 100 kV and 200 kV). Image acquisition should be done at least 360° around the object to get a complete 3D representation. Regularly check image quality and perform calibrations as needed.