X-ray inspection

X-ray inspection is a kind of inspection method which uses X-ray (also can be gamma; ray or other high-energy ray) to penetrate metal materials, and because of the different absorption and scattering effects of the materials on the ray, so the film sensitivity is different, so the image with different blackness is formed on the negative film, according to which to judge the internal defects of the material.            X-ray inspection is an important means of quality inspection, quality control and quality assurance in modern industrial production. It is generally used for non-destructive testing of parts made of metal, non-metal and other materials, casting and welding parts to determine their internal defects, such as slag inclusion, crack, air hole, incomplete penetration, incomplete fusion, etc. It is widely used in machinery, petroleum, chemical industry, aviation, shipbuilding, national defense and military industry, especially in the detection of boiler and pressure vessel welds.