Magnesium alloy boride iron illiminating flux and its production method
A technology of borides and magnesium alloys, applied to magnesium alloy iron removal flux, magnesium alloy iron removal flux using borides and its production field, can solve the problem of excessive titanium content in magnesium alloys, difficulty in large-scale promotion and application, and increase the cost of magnesium alloys and other problems, to achieve the effect of less harmful gas, improved mechanical properties and corrosion resistance, and less iron removal dosage
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Embodiment 1
[0011] Magnesium alloy iron removal flux composition (mass percentage): 40% magnesium chloride, 25% potassium chloride, 15% sodium chloride, 8% calcium chloride, 5% calcium fluoride, 6.3% barium chloride, 0.7% boron oxide .
[0012] The production method of the iron removal flux is as follows: after the crucible is heated to about 250°C, magnesium chloride, potassium chloride, sodium chloride, calcium chloride and barium chloride are added, and after the temperature is partially melted, calcium fluoride is added and the temperature is raised to 750°C. ℃, stir evenly, pour into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 20 sieve. Boron oxide is then 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 in the resistance crucible furnace and the temperature rises to 730°C, 3% of the iron-removing flux is continuously s...
Embodiment 2
[0015] Magnesium alloy iron removal flux composition (mass percentage): 50% magnesium chloride, 15% potassium chloride, 20% sodium chloride, 5% calcium chloride, 6.5% calcium fluoride, 2% barium chloride, 1.5% sodium borate .
[0016] The production method of the iron removal flux is as follows: after the crucible is heated to about 300°C, magnesium chloride, potassium chloride, sodium chloride, calcium chloride and barium chloride are added, and after the temperature is partially melted, calcium fluoride is added, and the temperature is raised to 780 ℃, stir evenly, pour into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 30 sieve. Sodium borate was then 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 the resistance crucible furnace and the temperature rises to about 740 ° C, 3% refining agent is continuously s...
Embodiment 3
[0019] Magnesium alloy iron removal flux composition (mass percentage): 50% magnesium chloride, 20% potassium chloride, 10% sodium chloride, 3% calcium chloride, 10% calcium fluoride, 6% barium chloride, 0.5% boron oxide , 0.5% sodium borate.
[0020] The production method of the iron removal flux is as follows: after the crucible is heated to about 300°C, magnesium chloride, potassium chloride, sodium chloride, calcium chloride and barium chloride are added, and after the temperature is partially melted, calcium fluoride is added, and the temperature is raised to 790 ℃, stir evenly, pour into blocks. After crushing, put it into a ball mill and grind it into powder, and sieve it with a No. 40 sieve. Then add boron oxide and sodium borate and mix 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 resistance crucible furnace and the temperature rises to about 740 ° C, 3% refinin...
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