Aluminum alloy vertical type cast-rolling technology and device
An aluminum alloy, casting and rolling technology, applied in the field of aluminum alloy vertical casting and rolling technology and equipment, can solve the problems of difficult preparation of semi-solid slurry, ineffective segregation elimination, and excessively high temperature in the center of the molten pool, so as to avoid surface and The effect of center band segregation, elimination of center line segregation, and reduction of center temperature
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Embodiment 1
[0029] Such as figure 1 As shown, the casting and rolling device of the aluminum alloy slab of the present invention includes a casting roll 1, a graphite baffle 3, a pinch roll 5, a water spray cooling device 8, etc., and the specific structure is as follows:
[0030] The casting rolls 1 are arranged oppositely, each casting roll 1 passes through the cooling water 2, the casting rolls 1 are placed horizontally, the direction of the slab 7 out of the blank is perpendicular to the ground; the graphite baffle 3 is placed between the two casting rolls 1 The upper part is completely attached to the surface of the casting roll 1, and the relative position with the casting roll 1 is kept constant at all times, and the cavity of the melt 4 is formed between the graphite baffle 3 and the two casting rolls 1; the upper part of the graphite baffle 3 is opposite Set the pinch roll 5, the center line of the pinch roll 5 is on the same straight line as the center line of the casting roll 1...
Embodiment 2
[0032] In the present embodiment, the casting and rolling method of 6181 aluminum alloy with a slab thickness of 40 mm utilizes the device in Embodiment 1, and the specific steps are as follows:
[0033] (1) Batching smelting: according to 6181 aluminum alloy standard composition (wt%) Si: 1.0, Fe: 0.45, Cu: 0.1, Mn: 0.15, Mg: 0.8, Cr: 0.10, Zn: 0.2, Al: balance, will Industrial pure aluminum ingots, magnesium ingots, and aluminum-silicon intermediate alloys are proportioned and weighed, melted in a melting furnace at 730-750°C for 2 hours, then placed in a static furnace for 1 hour, and then refined at 700-720°C. Remove slag once every 2 hours to obtain refined aluminum alloy liquid, and finally degas;
[0034] (2) Melt delivery: transport the melt to the front box through the chute, and control the temperature of the melt reaching the front box at 685±2°C;
[0035] (3) Casting: The initial roll gap of the casting roll is zero, the outer diameter of the casting roll is 500mm...
Embodiment 3
[0038] In the present embodiment, the casting and rolling method of the 5052 aluminum alloy with a slab thickness of 40 mm utilizes the device in Embodiment 1, and the specific steps are as follows:
[0039] (1) Batching smelting: According to the standard composition (wt%) of 5052 aluminum alloy (wt%) Si:0.25, Fe:0.4, Cu:0.1, Mn:0.1, Mg:2.5, Cr:0.25, Al: balance, industrial pure aluminum ingot , magnesium ingots, aluminum-manganese intermediate alloys, aluminum-chromium intermediate alloys and other proportions and weighed, first melt the industrial pure aluminum and set the temperature at 750°C, then add the above-mentioned additional elements and keep it warm for 2 hours, after the slag is removed, the aluminum liquid Transfer to a static furnace to stand for more than 1 hour, and finally degas;
[0040] (2) Melt delivery: transport the melt to the front box through the chute, and control the temperature of the melt reaching the front box at 690±2°C;
[0041](3) Casting: T...
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