A kind of synchronous extruding and twisting compound device and processing method of screw-driven fine-grained magnesium alloy

A screw transmission and composite device technology, which is applied in metal processing equipment, metal extrusion, metal extrusion dies, etc., can solve the problems of non-continuous production and low efficiency of processing methods, so as to increase the scope of use and improve the comprehensive mechanical properties , process flexible and changeable effect

Active Publication Date: 2021-12-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a synchronous extruding and twisting compound device and processing method of a spiral-driven fine-grained magnesium alloy, which has the advantages of refining the grain and weakening the texture and enabling continuous and precise processing, and solves the current problem The processing method is inefficient and cannot be continuously produced

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  • A kind of synchronous extruding and twisting compound device and processing method of screw-driven fine-grained magnesium alloy
  • A kind of synchronous extruding and twisting compound device and processing method of screw-driven fine-grained magnesium alloy
  • A kind of synchronous extruding and twisting compound device and processing method of screw-driven fine-grained magnesium alloy

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Embodiment 1

[0036] A processing method of a screw-driven fine-grained magnesium alloy synchronous extrusion and twisting composite device, comprising the following steps:

[0037] S1. Material selection: solid block magnesium alloy billet 9, AZ31 magnesium alloy bar with circular cross section, diameter Φ80mm, length 100mm, magnesium content 95%, aluminum content 3.0%, zinc content 1.0% , the rest are Mn, Fe and other elements, solid sandpaper, made of SiC particles, the order of mesh is 600#, 1000#, 1200#, 2500#, solid powder high temperature graphite, 99.5% of 1200ml liquid liquid Absolute ethanol, 99% acetone of 800ml liquid liquid;

[0038] S2. Pretreatment 1: Grinding the magnesium alloy blank 9 with coarse sandpaper to remove surface impurities and burrs, and then using fine sandpaper of different meshes in order of mesh to remove the surface of the magnesium alloy blank 9 Oxide layer to reduce friction;

[0039] S3, pretreatment 2: preparing blank cleaning solution, the proportio...

Embodiment 2

[0047] A processing method of a screw-driven fine-grained magnesium alloy synchronous extrusion and twisting composite device, comprising the following steps:

[0048] S1. Material selection: solid block magnesium alloy billet 9, AZ61 magnesium alloy bar with square section, cross-sectional area of ​​60×60mm 2 , the length is 100mm, the magnesium content is 92%, the aluminum content is 6.0%, the zinc content is 1.0%, and the rest are Mn, Fe and other elements, solid sandpaper, the material is SiC particles, and the mesh number is from small to large. It is 600#, 1000#, 1200#, 2500#, high-temperature graphite in solid powder, 99.5% absolute ethanol in 1200ml liquid liquid, and 99% acetone in 800ml liquid liquid;

[0049] S2. Pretreatment 1: Grinding the magnesium alloy blank 9 with coarse sandpaper to remove surface impurities and burrs, and then using fine sandpaper of different meshes in order of mesh to remove the surface of the magnesium alloy blank 9 Oxide layer to reduce...

Embodiment 3

[0058] A processing method of a screw-driven fine-grained magnesium alloy synchronous extrusion and twisting composite device, comprising the following steps:

[0059] S1. Material selection: solid block magnesium alloy billet 9, Mg-8Li-1Al-1Zn alloy round ingot, diameter Φ100mm, length 100mm, magnesium content 95%, lithium content 8.0%, aluminum content The content is 1.0%, the zinc content is 1.0%, the rest is Mn, Fe and other elements, solid sandpaper, the material is SiC particles, the mesh number is 600#, 1000#, 1200#, 2500#, solid Powdered high-temperature graphite, 99.5% absolute ethanol in 1200ml liquid, 99% acetone in 800ml liquid;

[0060] S2. Pretreatment 1: Grinding the magnesium alloy blank 9 with coarse sandpaper to remove surface impurities and burrs, and then using fine sandpaper of different meshes in order of mesh to remove the surface of the magnesium alloy blank 9 Oxide layer to reduce friction;

[0061] S3, pretreatment 2: preparing blank cleaning soluti...

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Abstract

The invention discloses a screw-driven fine-grained magnesium alloy synchronous extrusion and twisting composite device and a processing method, and relates to the technical field of magnesium alloy application. It includes a base and a magnesium alloy blank. An extrusion die is provided at the upper end of the inner middle part of the base. The lower end of the extrusion die is rotatably connected with a variable cross-section extrusion die through a roller bearing. The magnesium alloy billet It is arranged inside the extrusion die and the variable cross-section extruding and twisting die. The inner upper end of the extrusion die is slidingly connected with the extrusion punch directly above the magnesium alloy billet. The inner side of the variable cross-section extruding and twisting die is The middle part of the lower end is provided with a discharge port, and the bottom of the variable cross-section extruding and twisting die is fixedly connected with a synchronous twisting device through positioning pins. The screw-driven fine-grained magnesium alloy synchronous extrusion-twisting composite device realizes the severe plastic deformation process of extrusion and torsion synchronously, and ensures the deformation uniformity of the magnesium alloy billet in the process of fully refining the grains.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy application, in particular to a synchronous extruding and twisting compound device and a processing method of a spiral-driven fine-grained magnesium alloy. Background technique [0002] As a light-weight structural material, magnesium alloy shows broad application prospects in national industry and daily production due to its low density, high specific strength, high specific stiffness, and good electromagnetic shielding performance. However, due to the close-packed hexagonal structure of magnesium alloys, only two slip systems can be activated at room temperature, so its plastic deformation ability is very poor, which greatly affects the further processing and engineering applications of magnesium alloys. In order to break through this technical problem, many studies have been devoted to improving the comprehensive mechanical properties of magnesium alloys. Generally speaking, there are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/21B21C25/02B21C29/00B21C43/00B21C23/00
CPCB21C23/21B21C23/212B21C25/02B21C29/003B21C43/00B21C23/001
Inventor 王利飞张学文朱星晓张华张征勇曹晓卿
Owner TAIYUAN UNIV OF TECH
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