Welding seam detection tungsten radiation stirring parts
The basis of welded rays is to use X -ray or gamma rays to penetrate the characteristics of metal, and the absorption difference is generated in normal and defective parts. Therefore, a submarine shadow that forms a shot -intensity change, and then the flawed image is formed by film sensitivity. From the perspective of detection technology itself, ray testing has the characteristics of clarity and permanent preservation of defective images, so it has been widely used in industry. Among them, the sensitivity and sharpness of X -ray detection are better, and the application is more. In the absence of a power supply, the gamma rays generated by radioactive homicide can be tested.
Welding seam detection tungsten radiation shield application
Due to the high density of tungsten alloy shielding parts and high radiation shielding, its materials are often used in welds to detect tungsten radiation shields. Welding seam detection tungsten radiation shields are often used in welded seam detection instruments, and pipe welds of various materials are detected to ensure the quality of welding seams. The instruments for weld detection are mainly X -ray welding detectors and gamma ray welded detectors.
Why use welding seams to detect tungsten radiation shielding parts?
High -ray shielding: Because tungsten alloy materials have the advantages of high shielding skills on various rays, it is only 3mm thick at the γ -rays that prevent 150KEV from 150KEV. Such as medical gazes, multi -page grating, etc. The tungsten alloy material has a high density (60%larger than the lead), which reduces the size of the ray shield, but does not affect the ray shielding effect. Compared with the same radiation shielding performance, compared with lead and lead, the volume of tungsten alloy is less than 1/3 of the lead.
Environmental protection: Leading is used as radioactive treatment to block its harmfulness. Due to the environmental protection characteristics of welded tungsten shielding materials, the weld detector made by tungsten alloy is not harmful.
When the shielding design is performed, the thickness of the shielding material can be calculated according to the total weakening multiple reached by the shielding layer.
Formula: K = E0.693 D / △ 1/2
K: The total weakening multiple of the shielding layer
△ 1/2: The half -value value of the shielding material
D: The thickness of the shielding layer, the unit thickness of the unit is the same as the thickness of the half -value layer. When the thickness thickness of the half -value layer is converted into the thickness of the material, it can be obtained by removing the density of the material.
