Rare earth aluminum alloy powder and preparing method thereof
A technology of aluminum alloy and copper-aluminum alloy is applied in the field of aluminum alloy to achieve the effect of increasing strength and elongation and improving corrosion resistance.
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specific Embodiment 1
[0043] 1) Add aluminum, iron-magnesium-zinc-aluminum alloy, copper-aluminum alloy, and rare-earth aluminum alloy to the melting furnace according to the ratio of parts by weight, heat to 720°C and melt, then flow into the holding furnace to raise the temperature of molten aluminum to 750°C;
[0044] 2) Add powder refining agent to the holding furnace and refine for 8 minutes;
[0045] 3) Argon atomization is used, the pressure of argon is 2.0MPa, and the flow rate is 220Ls －1 , to obtain 100-150 μm rare earth aluminum alloy powder; the rare earth aluminum alloy powder includes the following components by weight percentage: 0.35% copper, 0.20% rare earth element, 0.35% iron, 0.25% magnesium, 0.25% zinc, 0.2% silicon, the balance being aluminum and unavoidable impurities, said rare earth elements including cerium and lanthanum;
[0046] 4) Sieve out the powder with a particle size range of 100-120 μm by a powder sieving machine as the finished powder.
specific Embodiment 2
[0048] 1) Add aluminum, iron-magnesium-zinc-aluminum alloy, copper-aluminum alloy, and rare-earth aluminum alloy to the melting furnace according to the ratio of parts by weight, heat to 740°C and melt, then flow into the holding furnace to raise the temperature of molten aluminum to 780°C;
[0049] 2) Add powder refining agent to the holding furnace and refine for 10 minutes;
[0050] 3) Argon atomization is used, the pressure of argon is 5.0MPa, and the flow rate is 160Ls －1 , to obtain 50-100 μm rare earth aluminum alloy powder; the rare earth aluminum alloy powder includes the following components by weight percentage: 0.25% copper, 0.15% rare earth element, 0.4% iron, 0.23% magnesium, 0.3% zinc, 0.25% silicon, the balance being aluminum and unavoidable impurities, said rare earth elements including cerium and lanthanum;
[0051] 4) Sieve out the powder with a particle size range of 80-100 μm by a powder sieving machine as the finished powder.
specific Embodiment 3
[0053] 1) Add aluminum, iron-magnesium-zinc-aluminum alloy, copper-aluminum alloy, and rare-earth aluminum alloy to the melting furnace according to the ratio of parts by weight, heat to 750°C and melt, then flow into the holding furnace to raise the temperature of molten aluminum to 800°C;
[0054] 2) Add powder refining agent to the holding furnace and refine for 12 minutes;
[0055] 3) Argon atomization is used, the pressure of argon is 3.0MPa, and the flow rate is 200Ls －1 , to obtain 50-100 μm rare earth aluminum alloy powder; the rare earth aluminum alloy powder includes the following components by weight percentage: 0.3% copper, 0.2% rare earth element, 0.3% iron, 0.27% magnesium, 0.25% zinc, 0.3% silicon, the balance being aluminum and unavoidable impurities, said rare earth elements including cerium and lanthanum;
[0056] 4) Sieve out the powder with a particle size range of 80-100 μm by a powder sieving machine as the finished powder.
[0057] By adopting the abov...
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