High-strength aluminum alloy automobile hub and machining process thereof

Abstract

The invention discloses a high-strength aluminum alloy automobile hub which comprises a hub body. A hub bearing is made from an aluminum alloy material. The aluminum alloy material is prepared from, by weight, 0.20% to 0.25% of C, 0.15% to 0.23% of Si, 1.52% to 1.64% of Mn, not larger than 0.008% of P, not larger than 0.005% of S, 0.08% to 0.14% of V, 0.67% to 0.84% of Ni, 1.12% to 1.43% of Cr, 4.6% to 5.4% of Fe, 0.008% to 0.17% of Ta, 0.13% to 0.145% of Nd, 0.008% to 0.012% of Ce, 0.11% to 0.16% of Eu, 0.009% to 0.022% of Pt, 0.32% to 0.41% of W, 0.12% to 0.14% of Nb, 0.749% to 1.033% of filler and the balance Al and inevitable impurities. The high-strength aluminum alloy automobile hub is high in strength, good in corrosion resistance and long in service life.

Description

technical field [0001] The invention relates to a high-strength aluminum alloy automobile wheel hub and its processing technology. Background technique [0002] At present, the most important advantage of steel hub bearings is that the manufacturing process is simple and the cost is relatively low, and the ability to resist metal fatigue is very strong, which is what we commonly call cheap and strong. However, the disadvantages of steel wheels are heavy weight, large inertial resistance, poor heat dissipation, and very easy to rust; alloy wheels can just make up for such problems, with lighter weight, small inertial resistance, and high manufacturing precision. Small deformation and low inertial resistance during high-speed rotation are beneficial to improve the straight-line driving performance of the car and reduce tire rolling resistance, thereby reducing fuel consumption; the thermal conductivity of the alloy material is about three times that of steel, and the heat diss...

AI Technical Summary

Problems solved by technology

However, the disadvantages of steel wheels are heavy weight, large inertial resistance, poor heat dissipation, and very easy to rust; alloy wheels can just make up for such problems, with lighter weight, small inertial resistance, and high manufacturing precision. Small deformation and low inertial resistance during high-speed rotation are beneficial to improve the straight-line driving performance of the car and reduce tire rolling resistance, thereby reducing fuel consumption; the thermal conductivity of the alloy material is about three times that of steel, and the heat dissipation is good. The heat decay of the brake system, tires and brake system can all play a role