How are metal injection molded parts scanned by CT

How are metal injection molded parts scanned by CT

Metal Injection Molding (MIM) is a method of creating granular raw materials by combining fine metal powders (aluminum, magnesium, steel, etc.) with adhesives (various thermoplastic plastics, waxes, and other materials). Then use the conventional injection molding machine for granulation raw materials. MIM is limited to relatively small components, typically consisting of highly complex geometric shapes. CT scanning is a great choice for inspecting these small and micro parts. In this small detail, you can measure and check the geometry of the elements. A complete GD&T measurement plan can also be used for small parts, checking for differences in the manufacturing process or verifying the design. Verifying micro components has traditionally been expensive, but with industrial CT scanning, the inspection of micro parts or components is easier and faster.

CT scanning is a powerful tool for mold designers, production departments, and quality departments. In medicine, it can be used to detect abnormalities in the brain or heart or bone fractures. In the injection molding industry, it can be used to discover internal gaps and other defects in injection molded parts, and to assist engineers in troubleshooting other types of faults.

The working principle of a CT machine: A project to be evaluated is placed on a rotating table and rotated as multiple 2D X-ray images are generated. The computer connects these images into detailed three-dimensional images. Traditionally, 3D CT images are only used to identify the presence or absence of specific features or defects, and are not used for size measurement.

With the introduction of enhancement technology, the ability of CT is combined with the accuracy of Metrology, which can not only find defects, but also measure the internal and external dimensions of parts and even components. Specially developed software can combine the functions of CT and CMM (coordinate measuring machine), and overlay actual measurements with CAD models to view and measure the differences between the two. The measurement capability of CT scanning enhancement equipment provides designers and engineers with key information needed to modify processes or remake molds. It can help engineers evaluate injection molded parts faster and more accurately, and provide more accurate information for modifying production processes or re modifying molds.