Carbon fiber is a high-strength and high-modulus lightweight fiber material, its density is lighter than metal, the strength is 16 times that of steel, Young's modulus is 2-3 times that of traditional glass fiber.With the increasing demand for environmental protection and enaergy conservation and emission reduction, the global automotive industry is looking for diversified lightweight solutions. The demand for weight reduction of unsprung mass is particularly prominent, and as an important part of unsprung mass, the wheel occupies a large proportion in the overall mass of the car, and one of the effective ways to reduce weight is to use carbon fiber wheels.
At present, the common manufacturing processes of carbon fiber wheel are RTM, autoclave, molding, etc., among which the autoclave process is relatively simple to manufacture and the mold investment is low. According to the characteristics of the wheel hub structure, the autoclave die body is divided into upper and lower parts, the lower die is attached to the spoke part of the wheel, the upper die is attached to the rim part, and the two are connected through the mold. The general steps are as follows:
Lower die layThe lower die is attached to the spoke part of the wheel, and some reinforced areas can be embedded parts
Upper die layUpper die lay on the rim section
Top and bottom mold closingThe upper and lower die is closed, and the rim and spoke part are connected by reserved flanging and lap joint to form a whole
Place the silicone pressure plateA silicone press plate is placed on the inside to improve the smoothness of the inner surface
In kindAfter stripping, sprayRelatively speaking, the HP-RTM+ custom fiber laying (TFP) manufacturing technology is more automated,More efficient, less costly.
Fiber laying (TFP)Machines are used to arrange and sew carbon fibers into precise positions for optimal structural performance and higher layup efficiency
HP-RTM process equipment
High pressure compression resin transfer molding (HP-RTM) process and epoxy resin system for better internal quality and higher curing efficiency
Ultralight series carbon fiber wheels
(ESE Carbon)
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