Carbon fiber is a high-strength, high-modulus, lightweight fiber material. Its density is lighter than metal, yet its strength is 16 times that of steel, and its Young's modulus is 2-3 times that of traditional glass fiber.

With increasing demands for environmental protection and energy conservation, the global automotive industry is seeking diverse lightweight solutions. The need to reduce unsprung mass is particularly prominent, and as a significant component of unsprung mass, wheels account for a large proportion of the overall vehicle weight. One effective way to reduce weight is by using carbon fiber wheels.

Currently, common manufacturing processes for carbon fiber wheels include RTM (Regenerative Thermal Mold), autoclave molding, and compression molding. Among these, the autoclave process is relatively simple and requires less investment in molds. Based on the wheel's structural characteristics, the autoclave mold is divided into upper and lower parts. The lower mold is used to install the wheel spokes, and the upper mold is used to install the wheel rim. The two are joined together to form a single unit. The general steps are as follows:

Lower mold laying

For the lower mold covering the spokes, some reinforcement areas can be reinforced using embedded parts.

Upper mold laying

Upper mold for lining the wheel rim

Upper and lower molds

The upper and lower molds are joined together, and the rim and spokes are connected by a pre-reserved flange to form a whole.

Place silicone pressure plate

A silicone pressure plate is placed on the inside to improve the flatness of the inner surface.

physical object

After demolding, spraying

Comparatively, the HP-RTM+ Custom Fiber Placement (TFP) manufacturing technology employed has a higher degree of automation.

More efficient and lower cost.

Fiber laying（TFP）

Using machines, carbon fibers are aligned and stitched into precise positions to achieve optimal structural performance and higher layup efficiency.

HP-RTM process equipment

Using high-pressure compression resin transfer molding (HP-RTM) and an epoxy resin system results in better internal quality and higher curing efficiency.

Ultralight series carbon fiber wheels

（ESE Carbon company）

Some information is sourced from the internet.