Composite purification flux containing cerium-magnesium alloy, and production method

A compound purification and magnesium alloy technology, applied in the field of metal materials and metallurgy, to achieve the effects of less harmful gas, convenient addition, and simple operation process

Inactive Publication Date: 2006-04-19
鄂尔多斯市天旭轻合金有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to address the deficiency of the existing magnesium alloy refining agents, and propose a composite purification flux for cerium-containing magnesium alloys and a pro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1:

[0013] Composition of cerium-containing magnesium alloy composite purification flux (mass percentage): 50% magnesium chloride, 15% sodium chloride, 20% potassium chloride, 2% calcium chloride, 3% barium chloride, 5% cerium carbonate and 5% tetraboric acid Potassium.

[0014] The production method of the flux is as follows: After the crucible is heated to about 250°C, add magnesium chloride, sodium chloride, potassium chloride, calcium chloride and barium chloride, heat up to 760°C, stir evenly, pour into a mass, and charge after breaking The ball mill grinds into a powder, and sifted through a No. 20 sieve. Then add cerium carbonate and potassium tetraborate, mix them with a ball mill, and put the prepared flux into a closed container for later use.

[0015] When in use, when the magnesium alloy is smelted in the resistance crucible furnace and the temperature is raised to 735℃, 2% of the composite purification flux is continuously sprinkled on the liquid surfa...

Example Embodiment

[0016] Example 2:

[0017] Composition of cerium-containing magnesium alloy composite purification flux (mass percentage): 40% magnesium chloride, 16% sodium chloride, 15% potassium chloride, 7% calcium chloride, 4% barium chloride, 10% cerium carbonate and 8% tetraboric acid Potassium.

[0018] The production method of flux is as follows: after the crucible is heated to about 250℃, magnesium chloride, sodium chloride, potassium chloride, calcium chloride and barium chloride are added, and the temperature is raised to 775℃, stirred evenly, poured into a block, and charged after being broken. The ball mill grinds into powder, and sifted through a No. 30 sieve. Then add cerium carbonate and potassium tetraborate, mix them with a ball mill, and put the prepared flux into a closed container for later use.

[0019] When in use, when the magnesium alloy is smelted in the resistance crucible furnace and the temperature is raised to 735℃, 2% of the composite purification flux is continuou...

Example Embodiment

[0020] Example 3:

[0021] Composition of cerium-containing magnesium alloy composite purification flux (mass percentage): 30% magnesium chloride, 19% sodium chloride, 16% potassium chloride, 3% calcium chloride, 5% barium chloride, 12% cerium carbonate and 15% tetraboric acid Potassium.

[0022] The production method of the flux is as follows: After the crucible is heated to about 250°C, add magnesium chloride, sodium chloride, potassium chloride, calcium chloride and barium chloride, heat up to 790°C, stir evenly, pour into a block, and charge after breaking The ball mill is used to grind into a powder and sieved through a No. 40 sieve. Then add cerium carbonate and potassium tetraborate, mix them with a ball mill, and put the prepared flux into a closed container for later use.

[0023] When in use, when the magnesium alloy is smelted in the resistance crucible furnace and the temperature is raised to 735℃, 2% of the composite purification flux is continuously sprinkled on the ...

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PUM

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Abstract

A composite cleaning flux containing CeMg alloy is proportionally prepared from magnesium chloride, sodium chloride, potassium chloride, calcium chloride, barium chloride, and cerium carbonate and potassium tetraborate. Its functions include suppressing loww of Ce, decreasing the content of Fe as harmful element, and removing the non-metal impurities from alloy.

Description

technical field [0001] The invention relates to a composite purification flux for cerium-containing magnesium alloys and a production method thereof, which are used for refining treatment of cerium-containing magnesium alloys and belong to the field of metal materials and metallurgy. Background technique [0002] Magnesium alloy has the advantages of low density, high specific strength and specific stiffness, good damping and electromagnetic shielding performance, and has become an important lightweight material in the automotive and electronics industries in recent years. As a common rare earth alloying element in magnesium alloys, cerium can enhance the bonding force between magnesium alloy atoms, reduce the atomic diffusion rate, and significantly improve the high temperature performance and casting performance of the alloy. Therefore, cerium-containing magnesium alloys have been widely used in recent years. [0003] However, because magnesium is easy to burn, even in the...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C23/00
Inventor 吴国华高洪涛丁文江
Owner 鄂尔多斯市天旭轻合金有限责任公司
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