Welding RT and UT are both non-destructive testing technologies, but their principles and application ranges are different.
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RT (X-ray detection) : The use of rays to penetrate the material, through the sensitive material to record the attenuation of the rays in the material, so as to detect the defects inside the material.
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UT (Ultrasonic detection) : Using the characteristics of ultrasonic propagation in the material, by detecting the reflection and scattering of ultrasonic waves inside the material, so as to detect the defects inside the material.
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Both methods can detect defects inside the material, but the scope of application is different. RT is suitable for detecting internal defects in metallic and non-metallic materials such as welds, castings, forgings, etc. UT is suitable for detecting the internal defects of metal materials, such as welds, plates, pipes, etc.
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In short, the two methods have their own advantages and disadvantages, should be selected according to the specific situation of the appropriate non-destructive testing method.
Clear conclusion: rt and ut are commonly used welding detection methods, the difference between them is that the object and principle of detection are different.
Explain the reason: rt inspection is mainly aimed at the defects in the metal weld, and the defects are detected by X-ray inspection or gamma ray inspection.
ut detection is the use of ultrasonic detection in the metal welding area, mainly to detect surface and deep defects. Content extension: In practical applications, the choice of rt and ut depends on factors such as the type and depth of welding defects, as well as the accuracy and reliability of test results.
At the same time, the detection equipment and operation technology of the two methods are also different, and professionals are required to operate and judge.
The difference between ut and rt for weld detection lies in the different technologies used in the detection methods of the two.
1, UT ultrasonic, a small instrument is simple and convenient, but the technical level of the operator is high, can detect internal defects. 2, RT ray detection, there are two kinds of X-ray and gamma-ray, the former is less radioactive, the latter will involve radioactive contamination, the risk factor is higher, but RT is also accurate detection can leave the most direct evidence (X-ray) method, so it is more commonly used.
Welding rt and ut are common welding inspection methods. Welding rt mainly uses ionizing radiation (X-rays or gamma rays) to detect welds, which can detect defects at depths below the surface, and is suitable for thicker metal structures or high-strength materials.
The welding ut is the use of ultrasonic flaw detection technology to detect the defects inside the weld, can detect various defects inside the plate thickness, its advantages are fast, sensitive, high reliability, low cost and will not cause radiation harm to the human body. All in all, both advantages and disadvantages have their own advantages, which method should be taken according to the specific situation.