Composite melting agent for reinfing crystal grains of aluminium magnesium alloy and preparation thereof
A technology of grain refinement and magnesium alloy, which is applied in the field of metal materials and metallurgy, can solve problems such as single function and narrow application range, and achieve the effects of simplifying the treatment process, improving the effect of deterioration, and improving shrinkage porosity
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Embodiment 1
[0013] Magnesium alloy grain refining multifunctional composite flux composition (mass percentage): 50% magnesium chloride (MgCl 2 ), 10% potassium chloride (KCl), 10% sodium chloride (NaCl), 5% calcium chloride (CaCl 2 ), 12% calcium fluoride (CaF 2 ), 1% barium chloride (BaCl 2 ), hexachloroethane 1%, magnesium carbonate 10% and calcium carbonate 1%.
[0014] The production method of this Mg-Al series magnesium alloy grain refinement multifunctional composite flux is as follows: after the crucible is heated up to about 250°C, magnesium chloride, potassium chloride, sodium chloride, calcium chloride and barium chloride are added, and the temperature is raised to After partially melting, add calcium fluoride, raise the temperature to 780°C, stir evenly, and cast into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 30 sieve. Then hexachloroethane, magnesium carbonate and calcium carbonate were added and mixed with a ball mil...
Embodiment 2
[0016] Magnesium alloy grain refining multifunctional composite flux composition (mass percentage): 40% magnesium chloride (MgCl 2 ), 20% potassium chloride (KCl), 10% sodium chloride (NaCl), 1% calcium chloride (CaCl 2 ), 5% calcium fluoride (CaF 2 ), 5% barium chloride (BaCl 2 ), 1% hexachloroethane, 15% magnesium carbonate and 3% strontium carbonate.
[0017] The production method of this Mg-Al series magnesium alloy grain refining multifunctional composite flux is as follows: after the crucible is heated up to about 300°C, magnesium chloride, potassium chloride, sodium chloride, calcium chloride and barium chloride are added, and the temperature is raised to After partially melting, add calcium fluoride, raise the temperature to 760°C, stir evenly, and 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 hexachloroethane, magnesium carbonate and strontium carbonate were added and mixed with a ball mi...
Embodiment 3
[0020] Magnesium alloy grain refining multifunctional composite flux composition (mass percentage): 40% magnesium chloride (MgCl 2 ), 10% potassium chloride (KCl), 20% sodium chloride (NaCl), 3% calcium chloride (CaCl 2 ), 10% calcium fluoride (CaF 2 ), 3% barium chloride (BaCl 2 ), hexachloroethane 4%, magnesium carbonate 5% and calcium carbonate 5%.
[0021]The production method of this Mg-Al series magnesium alloy grain refinement multifunctional composite flux is as follows: after the crucible is heated up to about 350°C, magnesium chloride, potassium chloride, sodium chloride, calcium chloride and barium chloride are added, and the temperature is raised to After partially melting, add calcium fluoride, raise the temperature to 790°C, stir evenly, and 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 hexachloroethane, magnesium carbonate and calcium carbonate were added and mixed with a ball mill....
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