Characteristics and functions of Gr5 titanium tube and titanium alloy tube

Radiographic flaw detection is a method of flaw detection using the penetrability and linearity of rays. Although these rays are not directly detectable by the naked eye like visible light, they can be used to sensitize the photographic film and can also be received by a special receiver. The rays commonly used for flaw detection include x-ray and gamma rays emitted by isotope, which are called x-ray flaw detection and γ-ray flaw detection, respectively. When these rays penetrate (irradiate) a substance, the greater the density of the substance, the more the intensity of the rays decreases, that is, the lower the intensity of the rays that can penetrate the substance. At this time, if you use a photographic film to receive, the light sensitivity of the film is small; if you use an instrument to receive, the signal obtained is weak. Therefore, when radiation is used to irradiate the parts to be inspected, if there are defects such as pores, slag inclusions, etc., the material density of the radiation passing through the defective path is much smaller than that of the non-defective path, and its strength is The weaker is less, that is, the intensity of the transmission is greater. If the film is used to receive, the light sensitivity is greater, and the plane projection of the defect perpendicular to the direction of the ray can be reflected on the film; the same can be done if other receivers are used. Use meters to reflect the plane projection of the defect perpendicular to the ray direction and the amount of ray transmission. It can be seen that, under normal circumstances, it is not easy to find cracks in radiographic inspection, or in other words, radiographic inspection is not sensitive to cracks.

Therefore, radiographic inspection is most sensitive to volumetric defects such as pores, slag inclusions, and incomplete penetration. That is, radiographic flaw detection is suitable for volume-type flaw detection, but not suitable for area-type flaw detection.
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