Gravity casting is a method of manufacturing a cast wheel of an specific metal alloy, typically aluminum, although Magnesium is also used, which involves supplying molten metal to a mould cavity via a feeder through a running system where the molten metal entry point is located above the top of the mould cavity. In this manufacturing process all the metal entering the mould is subject to turbulence. This turbulence can cause severe defects such as oxide inclusions and entrapped gas porosity and in some cases mould erosion and hotspots.We are committed to providing quality products and services to customers around the world
A forged wheel is manufactured from a billet, or a large square piece of solid metal. ... The manufacturing process results in a stronger wheel by eliminating cavities, porosity, and shrinkage. Due to its tighter grain structure, forged wheels are also mechanically stronger, ensuring better wear resistance over time.
Forged rims are made from solid aluminium that are heated to allow pressurized machines to shape the rims. Forged rims gets its name from the process of forging a single piece of aluminium into the shape of the wheel rims. Cast wheels on the other hand are made from aluminium that is melted into the liquid form, and poured into molds.
There are significant advantages to forged wheels such as forged wheels being 3x stronger and 25% lighter which is everything you want in a dedicated race car. The down side is that it costs 3x as much than a cast wheel.
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