Aluminum casting defects rarely originate from a single failure. In most cases, defects are the result of multiple variables interacting across melting, molten metal treatment, transfer, filtration, and solidification. While symptoms such as porosity, inclusions, leakage, cracks, and surface streaks appear during casting or downstream processing, the root cause often begins much earlier in the process. Understanding how to diagnose defects accurately is essential for reducing scrap, improving product quality, and maintaining stable production.<\/p>\n