Method for manufacturing metal/composite hybrid wheel for vehicle and metal/composite hybrid wheel manufactured by the same

摘要

The present invention provides a method for manufacturing a metal/composite hybrid wheel for a vehicle by molding an inner rim of a composite material by compression and, at the same time, bonding an outer rim of a metal material to the inner rim to induce compressive residual stress in the bonding area by a difference in thermal expansion coefficient between the outer rim and the inner rim, thereby increasing the adhesive strength of the bonding area and the durability of the wheel. The present invention further provides a metal/composite hybrid wheel for a vehicle manufactured by the method.

主权项

1. A method for manufacturing a metal/composite hybrid wheel for a vehicle, the method comprising:
inserting only a cylindrical bonding area of an outer rim of a metal material into an outer mold to be bonded thereto, the cylindrical bonding area being a portion of the outer rim; stacking a composite material for molding an inner rim on an outer circumference of the cylindrical bonding area of the outer rim and an inner circumferential surface of the outer mold, and then inserting an intermediate mold into the inside the outer mold and inserting an inner mold fully into the inside the intermediate mold to form a mold assembly; and placing the mold assembly into a heating chamber to be heated, wherein the inner rim is compressed and molded by a pressure generated by thermal expansion of the intermediate mold, and, a the same time, the cylindrical bonding area of the outer rim is bonded to only at least a portion of the composite material of the inner rim as the portion of the composite material of the inner rim being stacked on the outer circumference of the cylindrical bonding area of the outer rim, such that the portion of the composite material of the inner rim is located on an inner side of the cylindrical bonding area of the outer rim, wherein the mold assembly is cooled to room temperature to induce compressive residual stress in the bonding area of the outer rim and the inner rim, wherein only the cylindrical bonding area from the outer rim is located inside the outer mold so as to be in contact with the portion of the composite material of the inner rim.