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Mangnesium alloy zirconium compound silicon-removing flux and its production method

A technology of zirconium compound and production method, which is applied in the field of magnesium alloy silicon removal flux and magnesium alloy zirconium compound silicon removal flux, can solve the problems of poor silicon removal effect, achieve convenient operation, improve mechanical properties and corrosion resistance, and facilitate removal effect of effect

Inactive Publication Date: 2004-02-25
SHANGHAI LIGHT ALLOY NET FORMING NAT ENG RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to overcome the poor silicon removal effect of the existing magnesium alloy flux and the difficulty in removing Mg 2 In order to solve the shortcomings of Si, adjust the composition of the existing flux, and propose a method that can remove SiO 2 , and can effectively remove Mg 2 Si magnesium alloy silicon removal flux and production method thereof, the flux also has better slag removal effect, and is easy to operate and low in price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Magnesium alloy zirconium compound silicon removal flux component (mass percentage): 45% hydrated magnesium chloride (MgCl 2 ·6H 2 O), 15% potassium chloride (KCl), 8% barium chloride (BaCl 2 ), 10% calcium fluoride (CaF 2 ), 11% magnesium fluoride (MgF 2 ), 4% sodium fluoride (NaF), 7% zirconium tetrachloride (ZrCl 4 ).

[0014] The production method of the magnesium alloy silicon removal flux is as follows: after the crucible is heated to a temperature of about 300 ° C, potassium chloride and barium chloride are added, and after the temperature is raised to partial melting, calcium fluoride, magnesium fluoride and sodium fluoride are added, and the temperature is raised To about 750°C, stir evenly, and cast into blocks. Put it into a ball mill after crushing, then add magnesium chloride and zirconium tetrachloride, grind it into powder with a ball mill, and sieve it with a No. 20 sieve. The prepared flux is put into an airtight container for later use.

[0015]...

Embodiment 2

[0017] Magnesium alloy zirconium compound silicon removal flux component (mass percentage): 30% hydrated magnesium chloride (MgCl 2 ·6H 2 O), 15% potassium chloride (KCl), 5% barium chloride (BaCl 2 ), 12% calcium fluoride (CaF 2 ), 25% magnesium fluoride (MgF 2 ), 5% sodium fluoride (NaF), 8% potassium fluorozirconide (K 2 ZrF 6 ).

[0018]The production method of the magnesium alloy silicon removal flux is as follows: after the crucible is heated to a temperature of about 250 ° C, potassium chloride and barium chloride are added, and after the temperature is raised to partial melting, calcium fluoride, magnesium fluoride and sodium fluoride are added, and the temperature is raised To about 760°C, stir evenly, and cast into blocks. Put it into a ball mill after crushing, then add magnesium chloride and potassium fluorozirconide, grind it into powder with a ball mill, and sieve it with a No. 30 sieve. The prepared flux is put into an airtight container for later use.

...

Embodiment 3

[0020] Magnesium alloy zirconium compound silicon removal flux component (mass percentage): 30% hydrated magnesium chloride (MgCl 2 ·6H 2 O), 23% potassium chloride (KCl), 10% barium chloride (BaCl 2 ), 16% calcium fluoride (CaF 2 ), 10% magnesium fluoride (MgF 2 ), 7% sodium fluoride (NaF), 2% zirconium tetrachloride (ZrCl 4 ) and 2% potassium fluorozirconide (K 2 ZrF 6 ).

[0021] The production method of the magnesium alloy silicon removal flux is as follows: after the crucible is heated to a temperature of about 350 ° C, potassium chloride and barium chloride are added, and after the temperature is raised to partial melting, calcium fluoride, magnesium fluoride and sodium fluoride are added, and the temperature is raised To about 790°C, stir evenly, and cast into blocks. Put it into a ball mill after crushing, then add magnesium chloride, zirconium tetrachloride and potassium fluorozirconide, grind it into powder with a ball mill, and sieve it with a No. 40 sieve. ...

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Abstract

The present invention relates to a magnesium alloy zirconium compound silicon-removnig flux and its production method. Its composition includes (wt%) 30-45% of aqueous magnesium chloride; 15-25% of potassium chloride, 5-12% of barium chloride, 10-17% of calcium fluoride, 10-25% of magnesium fluoride, 3-8% of sodium fluoride and 2-8% of zirconium tetrachloride and / or potassium fluorozirconide. It includes the following steps: firstly, heating crucible, adding potassium chloride and barium chloride, heating and melting part of them, adding calcium fluoride, magnesium fluoride and sodium fluoride, heating to 750-790 deg.C, uniformly stirring them, pouring to obtain block, breaking it and placing it into ball-grinding machine, more adding magnesium chloride, zirconium tetrachloride and / or potassium fluorozirconide, grinding them.

Description

Technical field: [0001] The invention relates to a magnesium alloy silicon-removing flux and a production method thereof, in particular to a magnesium alloy zirconium compound silicon-removing flux and a production method thereof, and belongs 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 performance, and has become an important lightweight material in the automotive and electronics industries in recent years. my country is a country rich in magnesium resources, but most magnesium is exported in the form of low-priced raw materials. The main reason is that the content of non-metallic inclusions and harmful impurity elements in magnesium alloys is relatively high. With the increasing application of magnesium metal in industry, higher requirements are put forward for the purity of magn...

Claims

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Application Information

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IPC IPC(8): C22B9/10C22B26/22C22C1/06C22C23/00
Inventor 吴国华丁文江曾小勤刘六法
Owner SHANGHAI LIGHT ALLOY NET FORMING NAT ENG RES CENT
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