Method for preparing rare earth containing aluminium alloy
An aluminum alloy and alloy technology, applied in the field of materials, can solve problems such as large energy consumption, and achieve the effects of reducing environmental pressure, realizing recycling, and improving recovery rate
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Embodiment 1
[0018] Clean the waste 6063 aluminum alloy to remove surface impurities and then dry it to test its composition; prepare metal aluminum, metal silicon, metal magnesium, metal zinc, Al-30Cu alloy, Al-10Mn alloy, Al-2Cr alloy, Al-3Ti alloy and Al-10La alloy is used as the melting material alloy, so that the total composition of the melting material alloy and scrap 6063 aluminum alloy is Si 0.4%, Cu 1.1%, Mn 0.2%, Mg 2.1%, Cr 0.2%, Zn 5%, Ti 0.2%, La 0.1%, and the balance is aluminum, while preparing excess metal magnesium, which accounts for 10% of the total weight of metal magnesium in the smelted alloy material; wherein the weight of waste 6063 aluminum alloy accounts for 10% of the total weight of the smelted material alloy and waste 6063 aluminum 62% of the total weight of the alloy;
[0019] Put the prepared metal aluminum into an induction furnace, heat to 850±5°C, add mixed salt after the metal aluminum melts, then add waste 6063 aluminum alloy, and then reheat to 850±5°C...
Embodiment 2
[0025] Method is with embodiment 1, and difference is:
[0026] The total composition contains 0.2% of La by weight percentage; excessive metal magnesium accounts for 15% of the total weight of metal magnesium; waste 6063 aluminum alloys account for 61% of the total weight of smelting material alloys and waste 6063 aluminum alloys;
[0027] The composition of the mixed salt is KCl 31%, NaCl 31% by weight percentage, and the balance is Na 3 AlF 6 , the amount of mixed salt added is 1.1% of the total weight of aluminum metal;
[0028] The melt is poured after standing for 20 minutes;
[0029] The ingot is kept at 460°C for 1.4h, the reduction ratio of rolling at 450±10°C is 70%; the annealing treatment at 320°C for 80min, the reduction ratio of cold rolling is 40%
[0030] Solution treatment at 455°C for 3 hours and aging treatment at 113°C for 11 hours.
Embodiment 3
[0032] Method is with embodiment 1, and difference is:
[0033] The total composition contains 0.3% La by weight percentage; excess metal magnesium accounts for 20% of the total weight of metal magnesium; waste 6063 aluminum alloys account for 60% of the total weight of smelting material alloys and waste 6063 aluminum alloys;
[0034] The composition of the mixed salt is KCl 32%, NaCl 32% by weight percentage, and the balance is Na 3 AlF 6 , the addition of mixed salt is 1.2% of the total weight of aluminum metal;
[0035] The melt is poured after standing for 15 minutes;
[0036] The ingot is kept at 480°C for 1.2h, the compression ratio of rolling at 450±10°C is 60%; the annealing treatment at 340°C for 60min, the compression ratio of cold rolling is 30%, solution treatment at 460°C for 2h, at 110°C Conditioned aging treatment for 12h.
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