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How to choose X-ray flaw detector correctly
Release Time:
2025-08-19
To purchase an appropriate, economical, and practical X-ray flaw detector based on your needs, you must choose the right one. Generally, when selecting an X-ray flaw detector, factors such as penetration capability, X-ray tube focal size, and the shape of the workpiece being inspected should be considered.
The penetration capability of an X-ray flaw detector depends on the detector's capacity, or the tube voltage. Higher tube voltages produce harder and more energetic X-rays, resulting in greater penetration capability, which is proportional to the square of the tube voltage. Furthermore, at the same tube voltage, the penetration capability also depends on the material properties of the workpiece being inspected, such as density—in other words, the workpiece's ability to attenuate X-rays. For heavy metals like steel and thicker workpieces, due to their greater X-ray attenuation, an X-ray flaw detector with a higher tube voltage should be selected. For light metals like aluminum and magnesium and thinner workpieces, a lower tube voltage X-ray flaw detector can be selected.
For circular workpieces, such as circumferential welds on boiler shells or vessels, a circumferential exposure X-ray detector should be considered to improve efficiency, reduce labor intensity, and minimize radiation damage.
For smaller, easily movable workpieces, a mobile (or fixed) X-ray detector can be used. For bulky workpieces or tall equipment that is difficult to move, a portable X-ray detector can be used.
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