Formula and production process of aluminum-strontium intermediate alloy ingot
The invention relates to an aluminum-strontium master alloy and a production process technology, which is applied to the formulation of aluminum-strontium master alloy ingots and the field of making aluminum-strontium master alloy ingots. problems, to increase the content of effective elements, reduce harmful gases, and solve the effects of poor fluidity
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Embodiment 1
[0010] Get 1000 kilograms of electrolytic aluminum, 240 kilograms of metal strontium, carry out according to the following steps:
[0011] Melting: Melting electrolytic aluminum, the optimum temperature of molten aluminum is controlled at about 800°C;
[0012] Melt purification: add a commercially available sodium-free slag remover with an amount of 1.5‰ of molten aluminum and stir thoroughly to clean the molten slag so as to purify the molten aluminum.
[0013] Nitrogen gas protection: Gas protection is carried out on the molten metal after the purification treatment. The protection method is to spray nitrogen on the surface of the molten aluminum with a graphite nozzle. The oxidizing gas protects the easily oxidized strontium element and reduces the probability of generating inclusions and adsorbing gas.
[0014] Electromagnetic Stirring Alloying: After gas shielding, metal strontium is added in 3 batches to the molten aluminum, the first batch is added to 50% of the charge...
Embodiment 2
[0020] Get 1000 kilograms of electrolytic aluminum, 260 kilograms of metal strontium, carry out according to the following steps:
[0021] Melting: Melting electrolytic aluminum, the optimum temperature of molten aluminum is controlled at 850°C;
[0022] Melt purification: add a commercially available sodium-free slag cleaning agent with an amount of 1‰ of aluminum liquid and stir thoroughly to clean the molten slag to achieve the purpose of purifying the aluminum liquid.
[0023] Nitrogen gas protection: Gas protection is carried out on the molten metal after the purification treatment. The protection method is to spray nitrogen on the surface of the molten aluminum with a graphite nozzle. The oxidizing gas protects the easily oxidized strontium element and reduces the probability of generating inclusions and adsorbing gas.
[0024] Electromagnetic Stirring Alloying: After gas shielding, metal strontium is added in 3 batches to the molten aluminum, the first batch is added t...
Embodiment 3
[0029] Get 1000 kilograms of electrolytic aluminum, 280 kilograms of metal strontium, carry out according to the following steps:
[0030] Melting: Melting electrolytic aluminum, the optimum temperature of molten aluminum is controlled at 900°C;
[0031] Melt purification: add a commercially available sodium-free slag remover with an amount of 1.5‰ of molten aluminum and stir thoroughly to clean the molten slag so as to purify the molten aluminum.
[0032] Nitrogen gas protection: Gas protection is carried out on the molten metal after the purification treatment. The protection method is to spray nitrogen on the surface of the molten aluminum with a graphite nozzle. The oxidizing gas protects the easily oxidized strontium element and reduces the probability of generating inclusions and adsorbing gas.
[0033] Electromagnetic Stirring Alloying: After gas shielding, metal strontium is added in 3 batches to the molten aluminum, the first batch is added to 40% of the charge of th...
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