Flux for removing iron from Mg alloy and its preparing process

A technology of magnesium alloy and iron removal agent, applied in the field of magnesium alloy iron removal flux and its production, and magnesium alloy iron removal flux, can solve the problems of low price, achieve low price, improve mechanical properties and corrosion resistance, and strong adsorption sexual effect

Inactive Publication Date: 2004-03-17
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the existing magnesium alloy iron removal flux, and propose a new magnesium alloy iron removal flux and its production method. The obtained iron removal flux can remove slag during the use of magnesium alloy waste recycling It can also remove iron, and the price is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Composition (mass percentage) of the magnesium alloy iron removal flux: 35% magnesium chloride, 18% potassium chloride, 15% sodium chloride, 2% calcium chloride, 5% calcium fluoride, 25% manganese chloride.

[0011] The production method of the iron-removing flux is as follows: heat the crucible to about 300°C, add magnesium chloride, potassium chloride, sodium chloride and calcium chloride, heat up to partial melting, add calcium fluoride, heat up to 750°C, and stir evenly , cast into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 20 sieve. Then manganese chloride was added and mixed with a ball mill. The prepared flux is put into an airtight container for later use.

[0012] When in use, when the magnesium alloy is smelted in the resistance crucible furnace and the temperature rises to 740°C, 3% of the iron-removing flux is continuously sprinkled on the liquid surface, and at the same time, it is stirred up and down...

Embodiment 2

[0014] Composition (mass percentage) of magnesium alloy iron removal flux: 20% magnesium chloride, 20% potassium chloride, 13% sodium chloride, 4% calcium chloride, 3% calcium fluoride, 20% titanium dioxide, 20% manganese chloride.

[0015] The production method of this flux for removing iron is as follows: after heating the crucible to 250°C, add magnesium chloride, potassium chloride, sodium chloride and calcium chloride, after heating up to partial melting, add calcium fluoride, heat up to 760°C, and stir evenly , cast 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 manganese chloride were added and mixed with a ball mill. The prepared flux is put into an airtight container for later use.

[0016] When in use, when the magnesium alloy is smelted in the resistance crucible furnace and the temperature rises to 730°C, sprinkle 3% refining agent on the liquid surface continuously, and a...

Embodiment 3

[0018] Composition (mass percentage) of the magnesium alloy iron removal flux: 30% magnesium chloride, 15% potassium chloride, 20% sodium chloride, 5% calcium chloride, 10% calcium fluoride, 20% titanium dioxide.

[0019] The production method of this flux for removing iron is as follows: after heating the crucible to 350°C, adding magnesium chloride, potassium chloride, sodium chloride and calcium chloride, heating up to partial melting, adding calcium fluoride, raising the temperature to 750°C, and stirring evenly , cast 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 dioxide was added and mixed with a ball mill. The prepared flux is put into an airtight container for later use.

[0020] When in use, when the magnesium alloy is smelted in the resistance crucible furnace and the temperature rises to 740°C, 3% refining agent is continuously sprinkled on the liquid surface and stirred up and down a...

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PUM

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Abstract

An iron removing flux for Mg alloy contains magnesium chloride, potassium chloride, sodium chloride, calcium chloride, calcium fluoride and Ti (or Mn) compound. Its advantages are high effect on removing iron and other impurities from Mg alloy, high activity and low cost.

Description

Technical field: [0001] The invention relates to a magnesium alloy iron-removing flux, in particular to a magnesium alloy iron-removing flux using a titanium compound and a manganese compound and a production method thereof, belonging to the technical 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 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. It is usually required to effectively remove metal and non-metallic impurities such as iron, nickel, copper, aluminum and silicon in magnesium. . On the other hand, because the material utilization rate of magnesium alloy die castings is not high, generally it can only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/10C22B26/22C22C1/06C22C23/00
Inventor 吴国华翟春泉丁文江
Owner SHANGHAI JIAOTONG UNIV
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