Aluminium alloy sheet preparation method
A technology of aluminum alloy plate and aluminum alloy ingot, which is applied in the field of aluminum alloy preparation, can solve the problems of low elongation value of aluminum alloy, large fluctuation of elongation value, poor stability, etc., achieve high elongation, narrow fluctuation range, The effect of increasing the elongation value
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Embodiment 1
[0024] Embodiment 1 provides a method for producing high-magnesium aluminum alloy plates according to traditional techniques.
[0025] Step (1): smelting high-magnesium-aluminum alloys according to the traditional high-magnesium-aluminum alloy components, degassing and filtering, and performing semi-continuous casting to cast flat ingots with a width of 2650 mm.
[0026] Step (2): Cut the head and tail of the slab and face milling.
[0027] Step (3): Preheat the slab at 510°C for 5 hours, and hot-roll it into a billet. The finishing temperature of hot rolling is 320°C, and the thickness of the billet is 6mm.
[0028] Step (4): Perform annealing treatment on the billet. The annealing temperature is 360° C., and the holding time is 10 hours. After annealing, a coil is obtained, and after uncoiling, a plate is obtained.
Embodiment 2
[0030] Embodiment 2 provides a method for preparing an aluminum alloy plate, comprising the following steps:
[0031] (1) Casting ingot: casting aluminum alloy ingot, the composition and weight percentage of the aluminum alloy melt used for casting aluminum alloy ingot are: Mg: 4.5%, Mn: 0.2%, Si: 0.2%, Cr: 0.1%, Cu: 0.1%, Fe: 0.2%, Zn: 0.1%, Ti: 0.1%, Na: 0.0003%, and the rest are Al and unavoidable impurity elements; perform secondary degassing and tertiary degassing on the aluminum alloy melt After the first-grade slag removal and purification treatment, the aluminum alloy ingot is cast by the hot top semi-continuous casting process, and the width of the aluminum alloy ingot is 2650mm. The cast aluminum alloy ingot is a slab, which is subjected to head and tail cutting and surface milling after the slab is heated.
[0032] (2) Hot rolling: Preheat the aluminum alloy ingot, and after preheating the aluminum alloy ingot, hot roll it into a billet. The final rolling temperatu...
Embodiment 3
[0038]Embodiment 3 provides a method for preparing an aluminum alloy plate, comprising the following steps:
[0039] (1) Casting ingot: casting aluminum alloy ingot, the composition and weight percentage of the aluminum alloy melt used for casting aluminum alloy ingot are: Mg: 5.5%, Mn: 0.8%, Si: 0.3%, Cr: 0.2%, Cu: 0.1%, Fe: 0.3%, Zn: 0.2%, Ti: 0.1%, Na: 0.0003%, and the rest are Al and unavoidable impurity elements; perform secondary degassing and tertiary degassing on the aluminum alloy melt After the first-grade slag removal and purification treatment, the aluminum alloy ingot is cast by the hot top semi-continuous casting process, and the width of the aluminum alloy ingot is 2650mm. The cast aluminum alloy ingot is a slab, which is subjected to head and tail cutting and surface milling after the slab is heated.
[0040] (2) Hot rolling: Preheat the aluminum alloy ingot, and after preheating the aluminum alloy ingot, hot roll it into a billet. The final rolling temperatur...
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