How to Repair Scratched Aluminum Alloy Wheels?

[MacAliyah]

Here are the methods to repair scratched aluminum alloy wheels: 1. Minor scratches: The wheel can be polished. 2. Severe scratches: A metal filler can be used, followed by a bright spray treatment to restore the wheel to its original condition. Information about wheels is as follows: 1. Wheel: It is a cylindrical metal component that supports the tire from the inside and is mounted on the axle. Also known as a rim, steel rim, or hub. 2. Manufacturing methods of aluminum alloy wheels: (1) Gravity casting method: Aluminum alloy solution is poured into the mold using gravity, and after forming, it is processed and polished by a lathe to complete production. The manufacturing process is relatively simple, does not require precise casting techniques, and is cost-effective with high production efficiency. However, it is prone to bubbles (sand holes), uneven density, and insufficient surface smoothness. Geely has used this method for a considerable number of models, mainly in early production models, with newer models often switching to newer wheel designs. (2) Forging method: A whole aluminum ingot is directly extruded into shape on a mold by a thousand-ton press. The advantages are uniform density, smooth and fine surface, thin and lightweight wheel walls, and the highest material strength, which is over 30% higher than casting methods. However, due to the need for more sophisticated production equipment and a yield rate of only 50-60%, the manufacturing cost is higher. (3) Low-pressure precision casting method: Precision casting is performed under low pressure of 0.1Mpa. This casting method offers good formability, clear contours, uniform density, and a smooth surface. It achieves both high strength and lightweight while controlling costs, with a yield rate of over 90%, making it the mainstream manufacturing method for high-quality aluminum alloy wheels.