Preparation process for high-strength heat-dissipating aluminum alloy wheel hub material for automobile

Abstract

The invention discloses a preparation process for a high-strength heat-dissipating aluminum alloy wheel hub material for an automobile. The process includes the following steps: 1) weighing raw materials according to parts by weight for standby application; 2) putting zinc, copper, iron, aluminum and epoxy resin into a crucible of a vacuum melting furnace, performing vacuumizing to 7.2x10<-2>Pa, starting heating, after the temperature rises to 945-965 DEG C, stopping vacuumizing, and introducing inert gas into the vacuum melting furnace to 5x10<4>Pa; and continuing to heat to 1300-1350 DEG C,after the zinc, copper, iron, aluminum and epoxy resin are completely dissolved, adding high color carbon black, performing stirring for 30-40 min at a constant temperature, and cooling the alloy liquid to obtain intermediate alloy; and other steps. The preparation process provided by the invention is simple and scientific, and the components and contents used in the process are configured reasonably to ensure that the aluminum alloy has sufficient mechanical properties, excellent heat dissipation performance, high strength, and wear resistance, especially mechanical properties suitable for heavy-load high-temperature use environment.

Description

technical field [0001] The invention relates to the field of automobile hub technology, in particular to a preparation process of an aluminum alloy hub material for automobile high-strength heat dissipation. Background technique [0002] The wheels on the market can be divided into steel wheels and alloy wheels according to the material, and each has its own advantages and disadvantages. [0003] The main advantage of steel wheels is that the manufacturing process is simple (casting process is generally used, such as aluminum alloy wheels are generally produced by low-pressure casting process), the cost is relatively low, and the ability to resist metal fatigue is very strong, which is what we commonly call cheap and cheap. solid. However, the disadvantages of steel wheels are also relatively prominent, namely, ugly appearance (it can be said that there is no appearance at all), heavy weight (same wheel steel material is much heavier than aluminum alloy material), large ine...

AI Technical Summary

Problems solved by technology

[0005] Due to the important role of the automobile wheel hub, it is necessary to consider the quality, reliability, weight and service life in the selection of the automobile wheel hub material. Under the premise of ensuring the material performance, replacing some steel parts with aluminum alloy can effectively reduce the weight of the automobile. Reduce fuel consumption, but at present, my country's automotive aluminum alloy wheels still need to be improved in terms of heat dissipation, strength, etc.