Magnesium alloy refiner and preparing method thereof

A refiner and magnesium alloy technology, applied in the field of magnesium alloys, can solve problems such as environmental pollution, poor refiner refinement effect, and influence on alloy corrosion resistance, so as to increase the nucleation rate and increase the nucleation rate , reducing the effect of nucleation work

Inactive Publication Date: 2017-12-01
常州市瑞泰物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a magnesium alloy refiner and its preparation method in view of the problems that the existing refiner has poor refinement effect, affects the corrosion resistance of the alloy, and causes pollution to the environment.

Method used

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  • Magnesium alloy refiner and preparing method thereof

Examples

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Comparison scheme
Effect test

example 1

[0024] Weigh 950g of magnesium-aluminum alloy, 230g of carbon and manganese raw materials, and 0.5g of rare earth compound, add the magnesium-aluminum alloy into the melting furnace, and continuously feed the mixed gas of sulfur hexafluoride and nitrogen mixed at a volume ratio of 1:99 into the furnace Exhaust the air inside, then heat the melting furnace to 900°C, heat-preserve and smelt for 60 minutes to obtain a magnesium-aluminum melt, add rare earth compounds into the magnesium-aluminum melt, keep stirring at 150r / min for 15 minutes, then add carbon and manganese raw materials, and continue to keep warm Stir for 50 minutes to obtain the alloy melt, pour the alloy melt into shape, and add a low-voltage pulse magnetic field to the outside, start the pulse magnetic field generator immediately after casting, control the voltage to 300V, and the pulse frequency to 20Hz, so that the alloy melt is in the pulse magnetic field Solidify under the action, and turn off the pulse magne...

example 2

[0026] Weigh 600g of magnesium-aluminum alloy, 115g of carbon and manganese raw materials, and 0.2g of rare earth compounds, add the magnesium-aluminum alloy into the melting furnace, and continuously feed the mixed gas of sulfur hexafluoride and nitrogen mixed at a volume ratio of 1:99 into the furnace Exhaust the air inside, then heat the melting furnace to 750°C, heat-preserve and smelt for 40 minutes to obtain a magnesium-aluminum melt, add rare earth compounds into the magnesium-aluminum melt, keep stirring at 100r / min for 10 minutes, then add carbon and manganese raw materials, and continue to keep warm Stir for 30 minutes to obtain the alloy melt, pour the alloy melt into shape, and add a low-voltage pulse magnetic field to the outside, start the pulse magnetic field generator immediately after casting, control the voltage to 100V, and the pulse frequency to 5Hz, so that the alloy melt is in the pulsed magnetic field Solidify under the action, and turn off the pulse magn...

example 3

[0028] Weigh 800g of magnesium-aluminum alloy, 210g of carbon and manganese raw materials, and 0.3g of rare earth compounds, add the magnesium-aluminum alloy into the melting furnace, and continuously feed the mixed gas of sulfur hexafluoride and nitrogen mixed at a volume ratio of 1:99 into the furnace Exhaust the air inside, then heat the melting furnace to 800°C, heat-preserve and smelt for 50 minutes to obtain a magnesium-aluminum melt, add rare earth compounds into the magnesium-aluminum melt, keep stirring at 120r / min for 12 minutes, then add carbon and manganese raw materials, and continue to keep warm Stir for 40 minutes to obtain the alloy melt, pour the alloy melt into shape, and add a low-voltage pulse magnetic field outside, start the pulse magnetic field generating device immediately after casting, control the voltage to 200V, and the pulse frequency is 10Hz, so that the alloy melt is in the pulse magnetic field Solidify under the action, and turn off the pulse mag...

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Abstract

The invention relates to a magnesium alloy refiner and a preparing method thereof, and belongs to the technical field of magnesium alloys. A magnesium-aluminum alloy is added in a smelting furnace, heating and heat preservation are conducted at the protective gas atmosphere, and magnesium-aluminum melt is obtained; a rare earth compound is added in the magnesium-aluminum melt, heat preservation and stirring are conducted, then a carbon raw material and a manganese raw material are added, heat preservation and stirring are continuously conducted, and alloy melt is obtained; the alloy melt is poured and formed, a low-pressure pulse magnetic field is additionally arranged outside, a pulse magnetic field generation device is immediately started after pouring is finished, the alloy melt is solidified under the action of the pulse magnetic field, the pulse magnetic field is closed after the melt is solidified, and then the magnesium alloy refiner is obtained. The prepared magnesium alloy refiner has good refining capability; after using, the corrosion resisting performance of the alloy is improved; and meanwhile, harmful gases are not generated during smelting, and the environment cannot be polluted.

Description

technical field [0001] The invention relates to a magnesium alloy refiner and a preparation method thereof, belonging to the technical field of magnesium alloys. Background technique [0002] Because magnesium alloy has high specific strength and specific stiffness, it can be widely used in aerospace, automobile, machinery, electronics, computer and other fields to achieve the purpose of reducing the weight of components. The application of magnesium alloy refiner to refine the magnesium alloy melt is an important means to improve the comprehensive performance of magnesium alloy and improve the formability of magnesium alloy. The grain refinement effect is mainly reflected in the following aspects: ① fine grains help to improve the mechanical properties and plastic deformation ability of the alloy; ② fine grains help to reduce casting defects such as thermal cracking and porosity, thereby The performance of the alloy is improved; in addition, the fine grains also help to im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/03C22C23/02
CPCC22C1/06C22C1/03C22C23/02
Inventor 陈刚薛焱璟王之霖
Owner 常州市瑞泰物资有限公司
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