Radiographic Testing with X-Ray Tubes
Radiographic testing with X-ray tubes produces shadow images of internal metal structures using X-rays. Shows porosity, lack of fusion, and material defects.
Physical-Chemical Mechanism of Action
X-ray tubes generate high-energy electrons that, upon collision with a target material, exchange energy and emit X-rays. These rays penetrate the metal and are absorbed or reflected by density variations, resulting in shadow images.
Metallurgical Relevance & Welding Risks
Radiographic testing makes internal porosity, lack of fusion, and material defects visible. High or low density indicates defects. These can lead to cracks, deformations, and reduced mechanical properties.
Workshop Practice & Procedures
Use a high-resolution X-ray tube with appropriate voltage (about 100 kV) and a sharp focus. Ensure the sample area is clean and free of interfering factors. Imaging should be done in a controlled environment to ensure reliable results.