A kind of aluminum alloy wheel hub and preparation method thereof

Abstract

The invention discloses an aluminum alloy wheel hub and a manufacturing method thereof. The aluminum alloy wheel hub is formed by welding a spoke and a rim through friction stir welding. The produced vehicle wheel hub is not liable to deform and resistant to high temperatures, is not blistered or deformed when being burnt at the temperature ranging from 400 DEG C to 500 DEG C and is little in mass, the weight of the produced vehicle wheel hub is smaller than that of a common wheel hub by 3 pounds, the unit fuel course is increased by 5%, and the braking performance is good; the product mass is little, strength is high, the tensile strength ranges from 315 MPa to 355 MPa, the yield strength ranges from 230 MPa to 260 MPa, the impact-resisting capability of the produced wheel hub is improved by 30% compared with that of a forged wheel hub, the driving safety is ensured, the passing capability under various road conditions is improved, and the acceleration performance and the operation performance of a vehicle are ensured; and the fatigue resistance is good, the elongation ranges from 10% to 20%, the bearing capability is good and is 5 times that of a common iron wheel hub, high-speed running is quiet stable, the manufacturing method is simple, and raw materials are easy to obtain and capable of being widely produced and continuously replacing existing materials.

Description

technical field

[0001] The invention relates to the technical field of wheel hub materials, in particular to an aluminum alloy wheel hub and a preparation method thereof. Background technique

[0002] The spoke is a device to protect the rim and spoke of the vehicle wheel. It is characterized by a pair of circular cover plates. The diameter of the cover plate is close to the diameter of the wheel rim. There is a hole in the center of the cover plate that is larger than the rotation axis of the wheel. The part near the edge of the cover plate has an opening, and the edge of the cover plate is provided with an annular wheel plate, and the curved surface of the wheel plate can fit closely with the curved surface of the wheel rim. According to the structure of the spokes, the wheels are divided into spoke-plate type and spoke-type. At present, mainstream family cars all adopt the spoke-plate type spoke structure.

[0003] The rim, commonly known as the rim, is a component that ...