Quality assurance for all types of castings
For all casting procedures using materials such as iron, aluminium, magnesium or zinc, casting defects such as porosity, pore and bubble formation and hot cracks, dimensional changes and inclusions may occur.
The quality inspection with YXLON X-ray systems also enables rapid and secure checking of large quantities of items for such defects. Cast parts with a defective cast structure can therefore be removed from the manufacturing process at an early stage. It is also possible to infer the casting quality from the defects detected and increase productivity by introducing suitable measures.
A Computed Tomography (CT) can provide important additional information. With the help of CT, for example, internal structures and residual wall thicknesses can be accurately determined even for complex components. This information is essential especially in the qualification of prototypes.
For safety-related components in particular, the determination of residual wall thickness according to the casting process and the post-processing of serial products is highly important as it provides information about strength and thermal conductivity of the material. Once a tomography has been carried out on a component with YXLON computed tomography systems, the information is available for different analyses.
In eight application centres worldwide, YXLON has access to the entire range of X-ray technology and can offer solutions for film replacement by digital radio copy, fully automatic fault detection in X-rays and CT analysis of test objects of micro-CT to CT with linear accelerators as a service.
Y.HDR-Inspect – Durchleuchtungsprüfung mit „hochdynamischer Radioskopie“
YXLON's highly dynamic radio copy (HDR) has revolutionised the fluoroscopic screening test in the past four years. Details are visible in thin and thick sections of the test in motion and without constant adjustment of the X-ray parameters.
The term "dynamic radio copy" means that on the one hand there is a high dynamic detector range in relation to the depth resolution, and on the other hand there is a high dynamic range with respect to the refresh rate. Only with the high refresh rate is radio copy, i.e. a test in motion, reasonable.
A prerequisite for HDR is a low-noise rapid detector with high dynamics in conjunction with an optimally calibrated software and fast filter algorithms.
Structural noise occurring at high doses, caused by different grey levels of the pixels at the same dose, can be prevented by a multi-stage gain calibration and the correction of non-linear detector pixels.
Both the complex pixel correction and the band-pass filter-like algorithms require a very efficient implementation in software code to be used smoothly at 30 frames per second.
The filter effect can be adapted perfectly in small steps to the material to be tested and the wall thickness. This technology is available as standard in the X-ray systems Y.MU2000 D and Y.Multiplex.