Do parts produced by aluminum die casting require additional machining?

Author: admin / 2025-04-22

The parts produced by aluminum die-casting process do not require additional mechanical processing in many cases, because aluminum die-casting can accurately control the size and shape of the parts, especially suitable for mass production of complex shaped parts. However, whether additional mechanical processing is required depends on multiple factors, including the precision requirements, complexity, surface quality, and application field of the parts.
Firstly, the size and shape of aluminum die-casting parts can usually be very close to the design requirements, but due to small deviations that may occur during the die-casting process, such as mold wear, shrinkage effects during aluminum alloy solidification, or uneven cooling, some parts may have slight errors. Therefore, if the precision requirements of the parts are very high, or if the surface of the parts has high smoothness requirements, it is usually necessary to further adjust them through mechanical processing.
Secondly, aluminum die-casting parts may have some burrs, overflow, or small defects generated during casting, which usually require post-processing such as deburring, polishing, or surface finishing to ensure that the parts meet the final functional and appearance requirements. In this case, the parts may require simple mechanical processing such as removing excess parts, drilling, milling, or other fine machining.
In addition, although aluminum die-casting technology can produce high-precision parts, in some specific applications, especially for parts that bear high loads or require extremely high wear resistance, further processing may be required to improve their surface hardness, wear resistance, or assembly accuracy. For example, the contact or mating surfaces of certain parts may require precision machining to ensure their stability and sealing.