LIGHTWEIGHT HUB MADE OF ALUMINUM-STEEL COMPOSITE MATERIALS

摘要

The utility model relates to the technical field of a hub, particularly to a light-weight hub made of a steel-aluminum composite material. The hub includes an aluminum alloy base body, an outer bearing hole steel sleeve, an inner bearing hole steel sleeve and a plurality of bolt hole steel inserts; wherein a plurality of wheel bolt holes and brake disc bolt holes in a circumferential side of a flange of the aluminum alloy base body are provided with steel inserts; and an outer bearing outer race and an inner bearing outer race are respectively press-fitted into the outer bearing steel sleeve and the inner bearing steel sleeve in an interference manner, so as to be fixedly connected with the hub. The utility model may achieve the following technical effects of light weight, namely, in comparison with a ferrous metal, a weight reduction ratio is greater than 50 %; and high strength, namely, in comparison with an aluminum alloy and other lightweight materials, a local yield strength is increased from 206 Mpa to 353 Mpa or more, which is increased by 30 %, while there still remains a relatively large process adjustment range.