A kind of production method of high-purity magnesium alloy

A production method and purity technology are applied in the production field of high-purity magnesium alloys, which can solve the problems of low purity of magnesium alloys, and achieve the effects of low impurity content, increased refining temperature, and promotion of separation.

Active Publication Date: 2019-03-22
河南明镁镁业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a production method for high-purity magnesium alloys aimed at the defects of low purity of existing magnesium alloys. This method improves the traditional No. 2 solvent in the refining process by adding a certain proportion of fluorine Calcium, and increase the refining temperature, significantly improved the phenomenon of "high oxidized slag content" caused by the use of solvents, the cast rod produced has less impurity content, high purity, the preparation method is simple, reliable, economical, and easy to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The production method of the magnesium alloy of the present embodiment, the steps are as follows:

[0023] (1) Under gas protection conditions, first preheat the proportioned pure magnesium ingot to 380°C in a crucible furnace, and then heat up to 680°C for full melting;

[0024] (2) Add pure aluminum and pure zinc prepared according to the composition ratio of AZ31 into the magnesium melt, continue to keep warm at 680°C until completely melted, and then fully stir to make the ingredients uniform;

[0025] (3) Add the traditional No. 2 solvent, set the refining temperature to 780°C, and keep it for 5-10 minutes.

[0026] (4) Refining by air blowing, after slag removal treatment, directly pass through the crystallizer to pull the rod.

[0027] It was found that the traditional No. 2 solvent was used for refining, even if the refining temperature was high, there was still a large amount of oxidized slag, and it was impossible to remove the slag at one time. The chemical ...

Embodiment 2

[0029] The production method of the high-purity magnesium alloy of the present embodiment, the steps are as follows:

[0030] (1) Under gas protection conditions, first preheat the proportioned pure magnesium ingot to 380°C in a crucible furnace, and then heat up to 680°C for full melting;

[0031] (2) Add pure aluminum and pure zinc prepared according to the composition ratio of AZ31 into the magnesium melt, continue to keep warm at 680°C until completely melted, and then fully stir to make the ingredients uniform;

[0032] (3) Add No. 2 solvent with calcium fluoride, the mass of No. 2 solvent is 2% of the mass of pure magnesium ingot, the mass of calcium fluoride is 10% of the mass of No. 2 solvent, the refining temperature is set to 780°C, and stand Keep warm for 5-10 minutes;

[0033] (4) Refining by air blowing, after slag removal treatment, directly pass through the crystallizer to pull the rod.

[0034] In this example, the No. 2 solvent added with calcium fluoride is...

Embodiment 3

[0036] The production method of the magnesium alloy of the present embodiment, the steps are as follows:

[0037] (1) Under gas protection conditions, first preheat the proportioned pure magnesium ingot to 380°C in a crucible furnace, and then heat up to 680°C for full melting;

[0038] (2) Add pure aluminum and pure zinc prepared according to the composition ratio of AZ31 into the magnesium melt, continue to keep warm at 680°C until completely melted, and then fully stir to make the ingredients uniform;

[0039] (3) Add the traditional No. 2 solvent, set the refining temperature to 730°C, and keep it for 5-10 minutes.

[0040] (4) Refining by air blowing, after slag removal treatment, directly pass through the crystallizer to pull the rod.

[0041] This example uses the traditional No. 2 solvent, which will produce a large amount of oxidized slag, and because the refining temperature is low, the separation effect of these oxidized slag and magnesium liquid is poor, and it is...

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Abstract

The invention discloses a high-purity magnesium alloy production method. The preparation method comprises the steps that under gas protection, preheated pure magnesium is melted at a low temperature; a certain amount of aluminum and zinc are added into melt according to the alloy component ratio and are stirred evenly after being completely melted; the mixture is heated to a high temperature to be subjected to refining and deslagging; and finally pull rods are obtained through casting of crystallizer. By means of the method, a traditional 2# solvent in the refining process is improved; a certain ratio of calcium fluoride is added, the refining temperature is increased, and the phenomenon of the high oxidation slag inclusion content caused by the adopted solvent is remarkably improved; the separation effect of magnesium liquid and impurities is good; the produced cast rods contain few impurities and is high in purity. The preparation method is simple and reliable in process, economical and easy to apply and popularize.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a production method of a high-purity magnesium alloy. Background technique [0002] Magnesium alloy has the advantages of light weight, high specific strength, high specific stiffness, good damping and shock absorption and electromagnetic shielding performance, good recycling and other advantages, and has good application prospects in the fields of automobile, 3C, aerospace and other fields. However, compared with aluminum alloy, steel and other materials, the corrosion resistance of magnesium alloy is poor, which seriously limits its application. On the one hand, because magnesium is active, it is easily oxidized. On the other hand, the presence of impurity elements is an important reason affecting its corrosion resistance. In order to promote the production and application of magnesium alloys, it is urgent to develop a production method that red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C1/06C22C23/02
CPCC22C1/02C22C1/06C22C23/02
Inventor 王鸿远房中学张志新
Owner 河南明镁镁业科技有限公司
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