Forming device and method for preparing high-structural strength aluminum alloy hub

Abstract

The invention discloses a forming device and a method for preparing a high-structural strength aluminum alloy hub. The forming device consists of an alloy smelting device, a quantitative pouring cup, a graphite crucible, an electromagnetic stirring melt treatment device, a rheologic extrusion casting forming mold and an extrusion casting machine, wherein the quantitative pouring cup, the graphite crucible, the alloy smelting device, the electromagnetic stirring melt treatment device and the extrusion casting machine are known equipment; the rheologic extrusion casting forming mold includes an upper template and a lower template for connecting with the extrusion casting machine to form an upper mold core, a lower mold core and a side mold of a casting cavity of a hub to be cast; a temperature control device is arranged in the center position of the upper mold core; a side mold locking device is arranged on the outer side of the side mold; and an ejector rod and an ejector rod support plate are arranged on the lower mold core. The aluminum alloy hub prepared by the device and the method is uniform and fine in structure and high in structural strength; the structural strength is near the strength of forged hub; and meanwhile, the nearly final formation of the aluminum alloy hub can be realized, and the utilization rate and the complex shape of low-pressure casting materials are realized.

Description

technical field [0001] The patent of the invention belongs to the technical field of manufacturing aluminum alloy wheels, and in particular relates to a forming device and method for preparing aluminum alloy wheels with high structural strength. technical background [0002] With the development of the automobile industry and the requirements of energy conservation and emission reduction, energy conservation and environmental protection, beauty and luxury, safety and comfort are the main development directions of the automobile industry. Automobile lightweight is an important and effective means of energy saving and emission reduction. However, light weight cannot affect the safety of automobiles. Only the reasonable use of various lightweight, high structural strength materials and corresponding advanced forming devices and methods can ensure that the weight of automobiles is reduced without affecting its safety. Due to the characteristics of light specific gravity, high s...

AI Technical Summary

Problems solved by technology

[0003] An important part of the application of aluminum alloy in automobiles is the aluminum alloy automobile wheel. At present, the cast aluminum alloy wheel is basically used in passenger cars. The production process of the aluminum alloy wheel mainly adopts gravity casting and low pressure casting. Thick and heavy, it is difficult to meet the requirements of commercial vehicles and large passenger vehicles, limiting its scope of use

However, although the aluminum alloy wheels produced by the forging process have high performance and light weight, the production efficiency is low, and the near-net forming cannot be realized. The subsequent machining is large, which makes the material utilization rate low and the manufacturing cost is high.

200910104062.6 proposed the use of semi-solid thixotropic casting of aluminum alloy spokes, rolling or spinning the aluminum alloy sheet into a rim, and then finishing and welding the two together, which can manufacture lightweight, high-strength and fatigue-resistant aluminum alloys Wheel hub, but the above-mentioned method is relatively complicated, requiring secondary heating of the blank, thixoforming, spinning and welding, etc., the process is long, the cost is high, and the market space and competitiveness are small

201080001947.4 proposed a forging device and a forging method for rheological casting, but the above-mentioned method has relatively complicated process and equipment, long process and difficult operation

However, the currently commonly used low-pressure casting molds are limited in pressure, and the mold structure and strength cannot be used in extrusion casting.

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