Electro-plasticizing continuous extrusion molding processing technology of high-strength aluminum alloy

A technology of extrusion forming and processing method, which is applied in the field of continuous extrusion forming and processing of high-strength aluminum alloys by electroplasticization, and can solve the problem of inability to overcome the hot forming of high-strength aluminum alloys, reducing the service life of the cavity, and low plasticity of high-strength aluminum alloys. problems, to reduce the influence of residual stress and work hardening, improve performance, and reduce deformation resistance.

CN102814349AInactive Publication Date: 2012-12-12陶艳
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-12-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a new method for molding processing of a high-strength aluminum alloy, and belongs to the plasticity processing field. The method enables a pulse current to be applied to a deformation zone in the high-strength aluminum alloy extruding process to promote the improvement of the plasticity of the high-strength aluminum alloy and reduce the deformation resistance of the high-strength aluminum alloy to make the difficult-deformation high-strength aluminum alloy deform at normal temperature, so the heat treatment operations comprising device heating, annealing and the like are omitted. The pulse current can be directly applied to dislocation structures to promote the dislocation motion, so the affections of residual stress and processing hardening are reduced under the action of the pulse current, thereby the product surface quality is improved and the annealing operation is omitted. The reduction of the deformation resistance can effectively reduce the load acted on a die and reduce the temperature of the cavity material baffle block, so the service life and the production efficiency of the die are greatly improved, thereby the production cost is reduced. The surface quality and the mechanical performances of products are improved because of the pulse current, so rigorous performance requirements of the high-strength aluminum alloy of aerospace vehicles, high-speed trains and the like because of bad working environments are satisfied.
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Description

technical field

[0001] The invention relates to the plastic processing of nonferrous metals, especially the continuous extrusion forming processing method of high-strength aluminum alloy electroplasticization. Background technique

[0002] At present, high-speed railways, aerospace and other transportation fields have put forward higher and higher requirements for increasing speed and saving energy. High-speed trains, airplanes and other means of transportation increase speed and reduce energy consumption by reducing their own weight. Therefore, light metals such as high-strength aluminum alloys are receiving more and more attention. Compared with traditional components such as carbon steel and stainless steel, one is that its weight can be reduced by 1 / 4 to 1 / 3, which can effectively increase speed and reduce energy consumption; Rust removal and other production processes reduce the cost of component production, use and maintenance, and improve the overall quality of comp...

Examples

Embodiment Construction

[0009] Such as figure 1 As shown, the extrusion wheel 8 is driven by power to perform circular rotation in the direction of the arrow, and there is an approximately U-shaped groove in the middle of the circumference of the extrusion wheel. Inside the boot seat 1, there is a The sealing block, the cavity 7, the material retaining block 4, the surface of the cavity 7 is processed into a surface with the same curvature as the extrusion wheel 8, so the sealing area is formed in the groove of the extrusion wheel. The blank 3 is pressed in the groove of the extrusion wheel 8 by the compaction wheel 2, and is continuously sent to the extrusion chamber 7 formed by the extrusion wheel 8 and the tool in the shoe seat 1 under the action of friction force. During the process, when the blank 3 enters the cavity 7 and reaches the block 4, the plastic deformation occurs, and the pulse current is passed into the blank 3 through the wire. When the blank 3 is doing circular motion, due to the b...