Many customers express concerns about internal defects in castings, worrying that the product may not meet functional standards or may break in its final application environment due to internal defects. In fact, reputable and excellent industrial X-ray machine manufacturers can optimize the process scientifically to alleviate this concern. Especially with the popularity of X-ray casting inspection, customers can verify the internal quality of purchased castings through a third party.
X-ray casting inspection is one of the best non-destructive testing methods for detecting internal defects in castings.
During the X-ray casting inspection process, the product being tested is exposed to X-ray radiation. Some of the radiation is absorbed by the product, while the remaining radiation is exposed on the radiographic film. Dense materials resist the penetration of radiation, resulting in lighter areas on the film where exposure is less. Less dense materials allow more penetration, corresponding to darker areas on the film. Any voids, cracks, or inclusions that are less dense than the casting alloy will appear as dark areas. X-ray casting inspection can detect internal defects in investment casting products, including porosity and shrinkage, which manifest as dendritic/wispy/jagged, and cracks, etc.
Intuitive Imaging and Long-term Recording
X-ray casting inspection technology is known for its intuitive imaging effect. During the inspection process, X-rays penetrate the interior of the casting and clearly present hidden defects such as cracks, porosity, and inclusions on the photographic film. This intuitive image not only allows inspectors to quickly and accurately identify the type, location, and size of defects, but also the photographic film can be preserved for a long time, providing valuable historical data support for product quality tracing and process improvement.
Non-destructive Testing with High Sensitivity
As a non-destructive testing technique, X-ray casting inspection achieves a comprehensive check of the internal quality of castings without causing any physical damage to the casting. Its high sensitivity ensures that even minor defects can be effectively captured, which is significant for improving product quality and reducing rejection rates. Especially for thin-walled castings, X-ray casting inspection is an indispensable quality control tool.
Low Surface Finish Requirements, Wide Applicability
Traditional inspection methods often require a certain surface finish on castings, but X-ray casting inspection breaks this limitation. Whether the casting surface is smooth or rough, X-rays can easily penetrate and detect internal defects. This characteristic makes X-ray inspection more widely applicable across various types of castings, unaffected by the surface quality of the material.
Small Material Differences, High Applicability
The results of X-ray casting inspection show little difference between various materials, meaning that X-rays can detect with similar accuracy and effect whether the material is cast steel, cast iron, or other alloy materials. This broad applicability makes X-ray inspection a general solution for detecting internal defects in a variety of materials, meeting the diverse quality control needs of different industries and fields.
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