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Magnesium alloy profiles for tablet computers and mobile phones and extrusion process thereof

A tablet computer, magnesium alloy technology, applied in the field of magnesium alloy extrusion, can solve the problems of large-size or high-precision profile production and subsequent processing adverse effects, poor plastic deformation ability of magnesium alloys, difficult to eliminate residual stress, etc. The effect of obvious decline, good surface quality and comprehensive processing cost reduction

Active Publication Date: 2016-06-08
LVMEI ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the close-packed hexagonal crystal structure of magnesium, the plastic deformation ability of magnesium alloys is poor, so most of the magnesium alloy products are realized by casting process.
Plastic processing of magnesium alloys at room temperature is relatively difficult, and the residual stress after hot processing is difficult to eliminate, which has an adverse effect on the production and subsequent processing of large-size or high-precision profiles or parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A magnesium alloy profile for tablet computers and mobile phones. The raw material composition of the profile is: Zn: 0.95%, Al: 3.1%, other unavoidable impurities ≤ 0.02%, and the balance Mg.

[0044] An extrusion process for magnesium alloy profiles for tablet computers and mobile phones, comprising the following steps:

[0045] A. Melting raw materials: according to the weight percentage requirements of profile raw materials, melting magnesium alloy raw materials to make magnesium alloy round ingots;

[0046] B. Homogenization treatment: Remove the epidermis from the magnesium alloy round ingot obtained by melting in step A, put it into a resistance furnace and heat it to 400° C. for 6 hours for homogenization treatment, and cool to room temperature with the furnace after the homogenization treatment;

[0047] C. Pre-extrusion treatment: heat the magnesium alloy round ingot homogenized in step B to 380°C for 3 hours, and at the same time preheat the extrusion cylinde...

Embodiment 2

[0052] A magnesium alloy profile for tablet computers and mobile phones. The raw material composition of the profile is: Zn: 0.92%, Al: 3.2%, Mn: 0.02%, other unavoidable impurities ≤ 0.015%, and the balance Mg.

[0053] An extrusion process for magnesium alloy profiles for tablet computers and mobile phones, comprising the following steps:

[0054] A. Melting raw materials: according to the weight percentage requirements of profile raw materials, melting magnesium alloy raw materials to make magnesium alloy round ingots;

[0055] B. Homogenization treatment: remove the epidermis from the magnesium alloy round ingot obtained by melting in step A, put it into a resistance furnace and heat it to 405° C. for 8 hours for homogenization treatment, and cool to room temperature with the furnace after the homogenization treatment;

[0056] C. Pre-extrusion treatment: heat the magnesium alloy round ingot homogenized in step B to 382°C for 5 hours, and at the same time preheat the extru...

Embodiment 3

[0061] A magnesium alloy profile for tablet computers and mobile phones. The raw material composition of the profile is: Zn: 0.88%, Al: 3.25%, Mn: 0.05%, other unavoidable impurities ≤ 0.01%, and the balance Mg.

[0062] An extrusion process for magnesium alloy profiles for tablet computers and mobile phones, comprising the following steps:

[0063] A. Melting raw materials: according to the weight percentage requirements of profile raw materials, melting magnesium alloy raw materials to make magnesium alloy round ingots;

[0064] B. Homogenization treatment: remove the epidermis from the magnesium alloy round ingot obtained by melting in step A, put it into a resistance furnace and heat it to 410° C. for 7 hours for homogenization treatment, and cool to room temperature with the furnace after the homogenization treatment;

[0065] C. Pre-extrusion treatment: heat the magnesium alloy round ingot homogenized in step B to 385°C for 4 hours, and preheat the extrusion cylinder and...

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PUM

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Abstract

The invention relates to the technical field of magnesium alloy extrusion molding, in particular to a magnesium alloy profile for tablet computers and mobile phones and its extrusion process. The raw material composition of the profile is: Zn: 0.8-0.95%, Al: 3.1-3.4 %, Mn≤0.1%, other unavoidable impurities≤0.02%, the balance of Mg; the tablet computer and mobile phone extrusion profiles of the present invention have high tensile strength and yield strength, large elongation at break, high hardness, and ductility Yes, the performance is excellent, which can ensure the continuous extrusion production of magnesium alloy profiles for tablet computers and mobile phones. The extrusion process of the present invention includes the steps of melting raw materials, homogenization treatment, pre-extrusion treatment and extrusion molding; the extrusion process of the present invention has high production efficiency, high yield, relatively low cost, simple operation, and large-scale Industrial production.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy extrusion molding, in particular to a magnesium alloy profile for tablet computers and mobile phones and an extrusion process thereof. Background technique [0002] Magnesium alloy is currently the lightest metal structural material, which has electrical conductivity, thermal conductivity, electromagnetic shielding, high specific strength and specific stiffness, good shock absorption, good cutting processing and dimensional stability, easy recycling, and is conducive to environmental protection Magnesium alloys are known as "green engineering materials in the 21st century". With the development of light weight in industries such as automobiles, aviation, electronics and transportation, the application range of magnesium alloys is becoming wider and wider. Magnesium alloys are divided into cast magnesium alloys and wrought magnesium alloys. At present, cast magnesium alloys, which are widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22F1/06B21C23/02
Inventor 向城
Owner LVMEI ALUMINUM
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