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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 production method thereof. The loss of rare earth element cerium can reduce the content of harmful impurity element iron in the alloy, and it also has a good purification function to remove non-metallic inclusions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Cerium-containing magnesium alloy composite purification flux composition (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: heat the crucible to about 250°C, add magnesium chloride, sodium chloride, potassium chloride, calcium chloride and barium chloride, raise the temperature to 760°C, stir evenly, pour into blocks, break and put Grind into powder with a ball mill and sieve through a No. 20 sieve. Then add cerium carbonate and potassium tetraborate and 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 rises to 735°C, 2% compound purification flux is continuously sprinkled on the liquid surface and stirred up and down at the sam...

Embodiment 2

[0017] Cerium-containing magnesium alloy composite purification flux composition (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 the flux is as follows: after heating the crucible to about 250°C, add magnesium chloride, sodium chloride, potassium chloride, calcium chloride and barium chloride, raise the temperature to 775°C, stir evenly, pour into blocks, break and put Grind into powder with a ball mill and sieve through a No. 30 sieve. Then add cerium carbonate and potassium tetraborate and 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 rises to 735°C, 2% compound purification flux is continuously sprinkled on the liquid surface and stirred up and down ...

Embodiment 3

[0021] Cerium-containing magnesium alloy composite purification flux composition (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: heat the crucible to about 250°C, add magnesium chloride, sodium chloride, potassium chloride, calcium chloride and barium chloride, heat up to 790°C, stir evenly, cast into blocks, break and put Grind into powder with a ball mill and sieve through a No. 40 sieve. Then add cerium carbonate and potassium tetraborate and 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 rises to 735°C, 2% compound purification flux is continuously sprinkled on the liquid surface and stirred up and down at the same time to ci...

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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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