In the passenger car parts system, wheels are core components that support the vehicle body and transmit power. Their process selection must balance performance, cost, and mass production requirements. Among these, passenger car cast wheels, with their mature manufacturing processes, balanced performance, and affordable pricing, have become a key player in the current mainstream passenger car market. They cover a wide range of applications, from economy cars to some mid-to-high-end models, and are profoundly impacting the automotive industry's mass adoption.

The core advantage of cast wheels stems from their efficient and low-cost manufacturing process. Unlike forged wheels, which are formed by forging, cast wheels are primarily made of aluminum alloy and produced through a process of "metal melting - mold pouring - cooling and forming - and post-processing." Common casting processes include gravity casting and low-pressure casting. Gravity casting relies on the metal's own gravity to fill the mold, offering a simple and low-cost process suitable for mass production of basic wheels. Low-pressure casting, on the other hand, uses low-pressure gas to push molten metal into the mold, reducing internal bubbles and increasing density, resulting in better wheel strength and precision. It is widely used in mid- to high-end vehicle models. Both processes offer high mass production efficiency and versatile molds, enabling rapid response to wheel design requirements across various vehicle models while effectively controlling manufacturing costs.

While cast wheels may not match the lightweight and extreme strength of forged wheels in terms of performance, they are sufficient to meet the daily needs of mainstream passenger vehicles. Optimized cast wheels withstand the impact of daily driving and offer excellent corrosion resistance. Surface treatments such as spraying and brushing can create a variety of aesthetic effects, satisfying consumers' pursuit of vehicle aesthetics. Furthermore, cast wheels offer lower repair costs. Minor scratches or deformations can be restored through professional repair, making them more practical than the high replacement costs of forged wheels. In terms of market application, cast wheels are standard equipment for economy cars and compact sedans, and are also widely used in entry-level models of some mid- to high-end models. For consumers who prioritize daily commuting and have limited budgets, cast wheels' high cost-effectiveness and durability perfectly meet their needs. With continuous advancements in casting technology, such as the use of higher-purity aluminum alloys and optimized mold designs to reduce defects, the performance of cast wheels is continuously improving. They will continue to occupy a significant share of the mainstream passenger car market in the future, becoming an ideal choice for balancing performance and cost.