Device and method for preparing aluminum-based nano material

Abstract

The invention provides a device and method for preparing an aluminum-based nano material. The device comprises a controller, a double-column male die, an upper extrusion female die, a middle extrusion female die, a lower extrusion female die, an extrusion channel, a die sheath, a guide system, a heating device, a hydraulic pump and a back pressure ejector rod. The upper extrusion female die, the middle extrusion female die and the lower extrusion female die jointly form a multi-pass extrusion channel, the cross section of the extrusion channel of the upper extrusion female die and the cross section of the extrusion channel of the lower extrusion female die are each of a rectangular structure, and the cross section of the extrusion channel of the middle extrusion female die is of a V-shaped structure; when the device is used, the magnitude of output force is calculated in real time, it is guaranteed that the speed of the aluminum-based blank runs stably, and the temperature sensor monitors the temperature of the mold and the temperature of the aluminum-based blank in real time. According to the device and the method, the aluminum-based blank with the uniform and refined grain structure can be obtained, the mechanical property of the aluminum-based blank is greatly improved, and the aluminum-based blank has high strength and good toughness on the premise of ensuring that the aluminum-based blank has high density.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a device and method for preparing aluminum-based nanomaterials. Background technique [0002] Aluminum-based billets have the characteristics of low density, excellent electrical conductivity and corrosion resistance, strength close to or exceeding that of high-quality steel, good plasticity, and can be processed into various profiles, so they are widely used in industry. The requirements for billets are also getting higher and higher. For example, in the rapidly developing fields of electric power and aerospace, aluminum-based billets are used as lightweight conductor materials. It is hoped that while improving the strength of aluminum-based billets, the electrical conductivity is maintained at a high level. , and hope that its wear resistance is getting better and better. In the prior art, severe plastic deformation (SPD) processing is currently a more effective process for...

AI Technical Summary

Problems solved by technology

[0006] First, the traditional extrusion die often has the problem of difficulty in discharging the aluminum-based billet. If the extrusion material accumulates in the channel during the extrusion process, it needs to Disassemble the entire mold assembly to take out the extrusion waste, complicated operation and high maintenance cost

[0007]Second, the traditional extrusion die lacks a die protection device. In production practice, the production cost of a set of dies is very high. Once the die is damaged, it will cause great damage. Loss

[0008]Third, the traditional mold lacks follow-up treatment of the extruded billet, and the end of the extruded billet is often warped. In actual application, it is necessary to remove The sharp part leads to more complex process, poor surface finish and more waste, which indirectly increases the production cost

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