Study on Corrosion Cause of the Aluminum Wheel Mold During Low Pressure Die-casting Process 2025-06-16
The corrosion phenomenon in wheel mold during low pressure die casting process was investigated with optical microscope and scanning electron microscope. The results show that the surface of mold cavity reacts with high-temperature aluminum liquid after coating falling off, which results in soldering in the mold surface. Then, the transition layer is formed and it composes of Fe-Al-Si intermetallic compound. Finally, after the cyclic action of high-temperature aluminum liquid, the transition layer continuously diffuses and falls off from the mold surface, and it eventually causes corrosion of the mold.
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