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Rotary reciprocating extrusion device for superfine crystal magnesium alloy and processing method

A reciprocating extrusion and magnesium alloy technology, applied in metal extrusion, metal processing equipment, metal extrusion dies, etc., can solve the problems of unfavorable batch production, etc., and achieve the effect of simple structure, fine grain and uniform structure

Active Publication Date: 2019-11-26
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] The present invention aims at the problem that existing methods for improving the mechanical properties of magnesium alloys are not conducive to mass production, and provides a rotating and reciprocating extrusion device and processing method for ultra-fine-grained magnesium alloys. The extrusion die is driven by adding a rotating wheel during the deformation process. The rotation of the cavity changes the extrusion path, thereby realizing the introduction of torsional deformation in the extrusion process. Further, the multi-pass reciprocating rotary extrusion deforms the magnesium alloy, realizes the continuous deformation of the magnesium alloy billet, and produces fine grains. Uniform magnesium alloy material

Method used

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  • Rotary reciprocating extrusion device for superfine crystal magnesium alloy and processing method
  • Rotary reciprocating extrusion device for superfine crystal magnesium alloy and processing method
  • Rotary reciprocating extrusion device for superfine crystal magnesium alloy and processing method

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Embodiment

[0037] All parts of the reciprocating extrusion die in the present invention are made of chromium tungsten-manganese steel, and the left and right extrusion die cavities and the internal die cavities of the rotating wheel have smooth surfaces with a roughness of Ra0.16-0.32 μm.

[0038] Materials and chemical reagents used: magnesium alloy profile: AZ31 magnesium alloy block blank; sandpaper: SiC, 600 mesh, 2 sheets; 1000 mesh, 2 sheets; 1200 mesh, 2 sheets; 2500 mesh, 2 sheets; high temperature graphite oil solution: C, 30ml; absolute ethanol: CH 3 CH 2 OH, 1200ml; Acetone: C 3 h 6 O, 800ml.

[0039] A variable channel rotary reciprocating extrusion processing technology and method for magnesium alloys, using the following steps:

[0040] (1) Install the rotary reciprocating extrusion device on the horizontal hydraulic extrusion machine, the installation is firm, the position and connection relationship of each part must be correct, and the operation should be done in seq...

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Abstract

The invention relates to a rotary reciprocating extrusion device for a superfine crystal magnesium alloy and a processing method, and belongs to the technical field of non-ferrous metal plastic processing. The device and the method can solve the problem that an existing magnesium alloy mechanical property improvement method is not beneficial to batch production. According to the device and the method, a rotating wheel is additionally arranged in the deformation process to enable a cavity of an extrusion mold to rotate to change the extrusion path so as to realize the introduction of the torsion deformation in the extrusion process, then the magnesium alloy undergoes deformation processing through multi-pass reciprocating rotary extrusion, continuous deformation of a magnesium alloy blank is realized, and the magnesium alloy material with fine grains and uniform structure is prepared. According to the rotary reciprocating extrusion device and the processing method, the extrusion mold issimple in structure and easy to process, and is suitable for preparation of superfine crystal products such as the magnesium-based material and other light metal.

Description

technical field [0001] The invention belongs to the technical field of plastic processing of nonferrous metals, and in particular relates to a rotary reciprocating extrusion device and a processing method for ultrafine-grained magnesium alloys. Background technique [0002] As one of the three pillar industries in the 21st century, materials play an important role in various fields of national construction. In recent years, with the development of medical, transportation, electric power, aviation and other fields, people have put forward a higher level Lightweight, high-strength, high-plasticity materials have become the objects of urgent demand. As a light-weight metal structure material, magnesium and its alloys have the advantages of high specific strength and specific stiffness, good cutting processing ability, etc. It is widely used in many industrial fields. However, due to its special crystal structure (hexagonal close-packed crystal structure), magnesium alloys only ...

Claims

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Application Information

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IPC IPC(8): B21C23/21B21C25/02B21C43/00
CPCB21C23/21B21C23/212B21C25/02B21C43/00
Inventor 王利飞朱星晓张学文张华张征勇曹晓卿
Owner TAIYUAN UNIV OF TECH
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