Semi-solid machining process for automobile hub

Abstract

The invention discloses a semi-solid machining process for an automobile hub. The semi-solid machining process is characterized by comprising the following steps: selecting an aluminum alloy as a raw material for the automobile hub; adopting semi-solid forging preparation, that is, mainly conducting compressive deformation on a blank to be heated into a semi-solid state in a forging die, so as to obtain a product with a required shape and required properties. A novel automobile hub prepared according to the semi-solid machining process is high in specific strength. The semi-solid machining process has the characteristics that the aluminum alloy is high in corrosion resistance and malleability, and the novel automobile hub can be made of the aluminum alloy with high specific strength; compared with a casting, the aluminum alloy automobile hub manufactured by utilizing a semi-solid machining technology is low in porosity degree, fine in structure, higher in strength, accuracy of part sizes, and surface machining precision, and lower in cost.

Description

technical field [0001] The invention discloses a semi-solid processing technology of an automobile wheel hub. Background technique [0002] At present, people in the automobile manufacturing industry are exploring ways to reduce the quality of automobiles, reduce fuel consumption, improve the service life and safety of automobiles, and put forward strict requirements for improving the quality of automobile parts. In ordinary casting, the primary crystals grow in the form of dendrites. When the solid phase ratio reaches about 0.2, the dendrites form a continuous network skeleton and lose macroscopic fluidity. [0003] Automobile wheels are an important part of auto parts. With the growth of China's auto parts industry, the wheel industry has gradually developed and grown. Automobile wheels were mostly made of steel in the past. In order to reduce the weight of automobiles, they are now made of aluminum alloys. The forming process is mainly die casting. The production of whee...

AI Technical Summary

Problems solved by technology

Automobile hubs used to be mostly made of steel. In order to reduce the weight of automobiles, they are mostly made of aluminum alloy. The forming process is mainly pressure casting. The production of hubs usually takes 5 minutes to produce one piece, but there are high scrap rates, low productivity, heavy weight, and inertial resistance. Large, poor heat dissipation, etc.