A Method for Improving the Metallurgical Quality of Large Size 2000 Series Aluminum Alloy Ingots
An aluminum alloy ingot and aluminum alloy technology, which is applied in the field of alloy casting, can solve the problems of 2000 series aluminum alloy ingot casting methods that have not been reported, ingot composition segregation, microporosity, etc., so as to avoid ingot cracking and reduce The degree of component segregation and the effect of reducing cracks
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Embodiment 1
[0044] When smelting 2024 aluminum alloy slab ingots, ingredients are prepared according to the ingredients in Table 1. The smelting process adopts the conventional smelting process and parameters of 2000 series aluminum alloys, and aluminum ingots, magnesium ingots, and Al-50%Cu and Al-10%Mn intermediate alloys are selected. , Melt aluminum ingots, Al-50%Cu, Al-10%Mn intermediate alloys at 660°C with the furnace heating up, after all are melted, press magnesium ingots into the melt at 690°C, overheat at 740°C for 15 minutes, then cool down to 710°C ℃, inert gas is introduced into the smelting furnace, refining and degassing is carried out with standing furnace bottom permeable bricks, followed by slag removal and standing treatment, and then online degassing and refining through SNIF high-efficiency dual rotors, and through 30PPI+50PPI two-stage After the ceramic foam plate is filtered, it is ready for casting.
[0045] Casting starts when the temperature of the molten alumin...
Embodiment 2
[0050] When smelting 2219 aluminum alloy round ingots, the ingredients are prepared according to the composition in Table 1. The smelting process adopts the conventional smelting process and parameters of 2000 series aluminum alloys. Aluminum ingots and Al-50%Cu and Al-10%Mn intermediate alloys are selected. Heat up the furnace to melt aluminum ingots, Al-50%Cu, and Al-10%Mn intermediate alloys. After they are all melted, they are overheated at 740°C for 15 minutes, then cooled to 710°C, and inert gas is introduced into the melting furnace. The permeable bricks are refined and degassed, followed by slag removal and static treatment, and then online degassing and refining through SNIF high-efficiency dual rotors, and filtered through 30PPI+50PPI dual-stage foam ceramic plates, and are ready for casting.
[0051] Casting begins when the temperature of the molten aluminum reaches 700°C, and ultrasonic and electromagnetic waves are applied to the molten aluminum in the front tank. ...
Embodiment 3
[0056] When smelting 2029 aluminum alloy slab ingots, ingredients are prepared according to the ingredients in Table 1. The smelting process adopts the conventional smelting process and parameters of 2000 series aluminum alloys, and aluminum ingots, magnesium ingots, pure silver, and Al-50%Cu and Al-10%Mn are selected. , Al-50%Zr master alloy, melt high-purity aluminum ingot, Al-50%Cu, Al-10%Mn, Al-50%Zr master alloy at 660°C with furnace heating, after all melting, 690°C into the melt Press in magnesium ingots and pure silver, overheat at 740°C for 15 minutes, then cool down to 710°C, pass inert gas into the smelting furnace, use standing furnace bottom ventilation bricks for refining and degassing, and then carry out slag removal and static treatment. After that, the online degassing refining is carried out through the SNIF high-efficiency dual rotors, and after filtering through the 30PPI+50PPI two-stage foam ceramic plate, it is ready for casting.
[0057] Casting begins w...
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