The importance and significance of X-ray testing in industry
Date：2022-07-27 16:53:19 Views：130
As one of the five conventional inspection methods in radiology, X-ray transmission inspection can provide photos of whether there are defects and relevant dimensions in the inspection parts of castings. In industrial applications, X-ray is often used for defect detection of auto parts manufacturing, internal defect detection of aluminum alloy castings, quality screening of magnesium alloy castings, automobile hub detection, subframe detection, hinge quality detection, etc., to ensure that the tested industrial products have high strength; At the same time, in the field of weld detection, we often use X-ray to carry out cylinder weld detection, pipe weld detection, boiler weld detection, aerospace parts weld detection, etc.
For example, when detecting the internal quality defects of aluminum alloy castings, the sample itself has a clear outline and the thickness changes regularly, but under the detection of the X-ray detection system, it shows an uneven image, or there are irregular bright spots, dark spots, etc., then it can be judged that there are common casting defects such as loose casting, pores, slag inclusions, etc. in the casting, and the workers can consider whether the sample needs to be returned to the furnace for recasting according to the quality requirements. Similarly, quality defects such as pores, slag inclusions, incomplete penetration and incomplete fusion in the weld can also be detected.
In order to ensure the quality of castings, manufacturers need to pay strict attention to the inspection of castings, but some internal defects of castings cannot be detected by ordinary methods. There are many methods to evaluate the quality of castings, among which x-ray inspection has the best effect. It can detect the internal structure and mechanical properties of the tested object without destroying the tested object, making many defects clear at a glance, and it is intuitive and convenient for qualitative and quantitative analysis of defects.
Compared with ultrasonic, infrared, electromagnetic and other technologies, X-ray has stronger penetration and can be applied in a wider range of fields. At this time, X-ray detection system is particularly important in casting quality detection.
Industrial computed tomography (Industrial CT) system can provide important supplementary information. For example, CT can accurately determine the internal structure and residual wall thickness, even in complex components. Such information is crucial, especially in the process of identifying whether the prototype quality is qualified.
For safety related parts, it is very important to determine the residual wall thickness after the finishing stage of the casting process or series of products. This measurement provides information about the stability and thermal conductivity of the material. Once the sectional image of a part is formed in the industrial CT system, the information obtained can be used in various analyses.
The importance of X-ray inspection in casting inspection is self-evident. Casting quality inspection is not only the embodiment of high-quality production services, but also a beneficial guarantee for industrial safety production. It can be said that the development of the casting industry is inseparable from the development of X-ray testing technology.