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Magnesium alloy desilicon flux and production method

A magnesium alloy and flux technology, applied in the field of magnesium alloy silicon removal flux and production, can solve problems such as low price, and achieve the effects of low price, strong flux activity and good chemical stability

Inactive Publication Date: 2004-05-26
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing magnesium alloy flux, and propose a magnesium alloy silicon removal flux and a production method. The obtained magnesium alloy silicon removal flux can remove both silicon and slag during use, and the price low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Magnesium alloy silicon removal flux components (mass percentage): 25% magnesium chloride, 20% potassium chloride, 20% calcium fluoride, 8% barium chloride, 10% magnesium fluoride, 2% potassium fluorozirconide, 10% titanium chloride and 5% magnesium carbonate.

[0012] The production method of this magnesium alloy silicon removal flux is as follows: after the crucible is heated to about 300°C, magnesium chloride, potassium chloride and barium chloride are added, and after the temperature is raised to partial melting, calcium fluoride, magnesium fluoride and potassium zirconium fluoride are added , heated up to about 750°C, stirred evenly, and poured into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 20 sieve. Then titanium chloride and magnesium carbonate were added and mixed with a ball mill. The prepared flux is put into an airtight container for later use.

[0013] When in use, when the magnesium alloy is smelted...

Embodiment 2

[0015] Magnesium alloy silicon removal flux components (mass percentage): 18% magnesium chloride, 15% potassium chloride, 10% calcium fluoride, 12% barium chloride, 25% magnesium fluoride, 3% potassium fluorozirconide, 15% of titanium dioxide and 2% of calcium carbonate.

[0016] The production method of this magnesium alloy silicon removal flux is as follows: after the crucible is heated to about 350°C, magnesium chloride, potassium chloride and barium chloride are added, and after the temperature is raised to partial melting, calcium fluoride, magnesium fluoride and potassium zirconium fluoride are added , heated up to 760°C, stirred evenly, and poured into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 40 sieve. Then titanium dioxide and calcium carbonate are added and mixed with a ball mill. The prepared flux is put into an airtight container for later use.

[0017] When in use, when the magnesium alloy is smelted in th...

Embodiment 3

[0019] Magnesium alloy silicon removal flux components (mass percentage): 25% magnesium chloride, 25% potassium chloride, 10% calcium fluoride, 12% barium chloride, 10% magnesium fluoride, 3% potassium fluorozirconide, 10% titanium chloride and 5% calcium carbonate.

[0020] The production method of the magnesium alloy silicon removal flux is as follows: after the crucible is heated to about 350°C, magnesium chloride, potassium chloride and barium chloride are added, and after the temperature is raised to partial melting, calcium fluoride, magnesium fluoride and potassium zirconium fluoride are added , heated up to 750°C, stirred evenly, and poured into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 20 sieve. Then titanium chloride and calcium carbonate were added and mixed with a ball mill. The prepared flux is put into an airtight container for later use.

[0021] When in use, when the magnesium alloy is smelted in the re...

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PUM

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Abstract

Besides magnesium chloride 15-30%, potassium chloride 15-30%, calcium fluoride 10-20%, barium chloride 8-12% and magnesium fluoride 10-25% etc. the chemical constituent of fusing agent has titanium compound 10-20% and carbonate 1-10% being added. Magnesium chloride and potassium chloride etc. is added into the warmed up crucible. With the magnesium chloride etc. being melted, calcium fluoride and magnesium fluoride is added to the crucible. The fusing agent is made through procedures of heating up, stirring and pouring in bulk, then the procedures of crushing, milling and sifting out as well as with titanium compound and carbonate being added. The invented magnesium alloy provides the advantages of remarkable effect of removal of silica and excellent deslagging performance as well as improving mechanical property and corrosion-resisting properties.

Description

Technical field: [0001] The invention relates to a magnesium alloy silicon removal flux and its production method, belonging to metal materials and metallurgy [0002] technology field. Background technique: [0003] Magnesium alloy has the advantages of low density, high specific strength and specific stiffness, good damping performance, and electromagnetic shielding, and has become an important lightweight material in the automotive and electronics industries in recent years. With the increasing application of magnesium metal in industry, higher requirements are put forward for the purity of magnesium, which usually requires the effective removal of metal impurities such as silicon, iron, nickel, copper and aluminum in magnesium. At present, most of the magnesium alloys are produced by the silicon reduction method in my country, so the silicon content in magnesium is relatively high. Silicon is a harmful inclusion in magnesium alloys. Its solid solubility in magnesium is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C23/00
Inventor 吴国华翟春泉卢晨曾小勤丁文江
Owner SHANGHAI JIAOTONG UNIV
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