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Manufacturing technology for rare earth-magnesium alloy

A production process and rare earth magnesium technology, applied in the field of production process of rare earth magnesium alloys, can solve the problems of difficult separation of impurities in the alloy, low utilization rate of rare earth elements, and great influence on quality, and achieve uniform and stable metallographic structure and product appearance. Smooth, wrinkle-free, guaranteed physical properties

Active Publication Date: 2013-12-04
孝义市东义镁业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of the traditional production process, the method of alloying, rare earth forming and casting in one pot, the alloy impurities are not easy to separate, the composition is uneven, the utilization rate of rare earth elements is low, the precipitated rare earth phase is not uniform, and the segregation Many, great impact on quality and other issues, a production process for rare earth magnesium alloys is provided

Method used

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  • Manufacturing technology for rare earth-magnesium alloy
  • Manufacturing technology for rare earth-magnesium alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of production technology of rare earth magnesium alloy, concrete steps are:

[0023] 1. Heating and cleaning of the melting furnace device: heat the crucible, add 2kg of 2# flux, and when the crucible is heated to dark red, clean all the bottom and surrounding areas of the crucible to ensure that there are no alloys, no oxides and other impurities in the crucible;

[0024] 2. Accurately weigh 500kg of high-quality magnesium ingot and preheat it to 180°C, put it into the melting furnace and melt for 3 hours;

[0025] 3. After the magnesium ingots are melted, the temperature of the melting furnace is raised to 680°C, add 9.5kg of zinc ingots with a temperature of 180°C and 4.8kg of manganese chloride, then raise the temperature of the melting furnace to 720°C, and install a mechanical stirring device to stir. The stirring speed is 50r / min and stirring for 20min, then adjust the stirring speed to 60r / min and stir for 10min; the content of manganese chloride must be ...

Embodiment 2

[0033] A kind of production technology of rare earth magnesium alloy, concrete steps are:

[0034] 1. Heating and cleaning of the melting furnace device: heat the crucible, add 3kg of 2# flux, and when the crucible is heated to dark red, clean it from the bottom of the crucible and its surroundings to ensure that there are no alloys, no oxides and other impurities in the crucible;

[0035] 2. Accurately weigh 500kg of high-quality magnesium ingot and preheat it to 200°C, put it into the melting furnace and melt for 2.5h;

[0036] 3. After the magnesium ingots are melted, the temperature of the melting furnace is raised to 670°C, add 9.5kg of zinc ingots with a temperature of 180°C and 4.8kg of manganese chloride, then raise the temperature of the melting furnace to 740°C, and install a mechanical stirring device to stir. The stirring speed is 50r / min and stirring for 20min, then adjust the stirring speed to 60r / min and stir for 10min; the content of manganese chloride must be ...

Embodiment 3

[0044] A kind of production technology of rare earth magnesium alloy, concrete steps are:

[0045] 1. Heating and cleaning of the melting furnace device: heat the crucible, add 2.5kg of 2# flux, and when the crucible is heated to dark red, clean it from the bottom of the crucible and its surroundings to ensure that there are no alloys, no oxides and other impurities in the crucible;

[0046] 2. Accurately weigh 500kg of high-quality magnesium ingot and preheat it to 220°C, put it into the melting furnace and melt for 3.5h;

[0047] 3. After the magnesium ingots are melted, the temperature of the melting furnace is raised to 690°C, add 9.5kg of zinc ingots with a temperature of 180°C and 4.8kg of manganese chloride, then raise the temperature of the melting furnace to 730°C, and install a mechanical stirring device to stir. The stirring speed is 50r / min and stirring for 20min, then adjust the stirring speed to 60r / min and stir for 10min; the content of manganese chloride must b...

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Abstract

The invention belongs to the fields of metal materials and metallurgy, aims to solve the problems that impurities of alloy are hard to separate, ingredients are nonuniform, the utilization rate of rare earth element is low, precipitated rare earth phases are nonuniform, the segregation is more, and effects for the quality is great by adopting the manner that alloying, rare earth process, and casting are conducted in a pot during a conventional manufacturing technology process, and provides a manufacturing technology for rare earth-magnesium alloy. According to the manufacturing technology, conducting adding, refining, and degassing with hexachloroethane degassing agent of alloy element in a melting pot; and pouring into a second pot after standing for 30 min, adding rare earth, and standing and casing. A manufactured bar material has uniform and stable metallographic structure and clear crystal boundary; the product is without pore, shrinkage cavity and cold shut, and the surface is smooth and without rugosity; the purity, ingredients, and equilibrium of physical properties of the product are guaranteed, the grain size of the alloy is refined, very stable dispersed phase is precipitated, and the rigidity and the decay resistance of texture are improved; therefore, product performances are allowed to be superior to an ordinary alloy standard.

Description

technical field [0001] The invention belongs to the field of metal materials and metallurgy, and in particular relates to a production process of a rare earth magnesium alloy. Background technique [0002] With the global energy crisis becoming more and more serious, the use of automobiles is increasing year by year, and the energy consumption of huge automobile manufacturing has become a prominent problem. The calls for weight reduction and energy saving of automobiles are on the rise, and lightweight has become the main direction of automobile development. As a light metal structural material, magnesium alloy has the advantages of high specific strength, specific stiffness, low damping coefficient, good vibration damping performance, easy cutting and easy recycling, making it a weight-reducing material selected by the automobile industry. Rare earth elements can significantly improve the corrosion resistance of magnesium alloys. On the one hand, the addition of rare earth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C23/04C22C1/06
Inventor 张全福穆锦珲穆锦龙张志新张海静李张红
Owner 孝义市东义镁业有限公司
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