Preparation method for 6111 aluminum alloy sheet
A technology for aluminum alloy sheet and aluminum alloy ingot, applied in the field of aluminum alloy, can solve the problems of reducing sheet formability, reducing production efficiency, increasing production cost, etc., and achieving the effects of improving stamping performance, improving production efficiency, and saving energy
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Embodiment 1
[0032] A preparation method of 6111 aluminum alloy plate, comprising the following steps:
[0033] (1) Ingot preparation: 6111 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 100mm, and the ingredients and their mass percentages were: Si: 1.08%, Mg: 0.66%, Cu: 0.81%, Mn: 0.26%, Fe≤0.40%, Zn≤0.15%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;
[0034] (2) Heating: After the 6111 aluminum alloy ingot is cut and milled, it is heated to 415°C in a circulating air furnace, and after holding for 3 hours, it is heated to 460°C and held for 2 hours;
[0035] (3) Hot rolling: hot rolling the 6111 aluminum alloy ingot after heat preservation, first rolling 5 passes along the width direction of the slab ingot, and then rolling 8 passes along the length direction of the slab ingot to obtain Hot-rolled sheet; wherein, the thickness of the hot-rolled sheet is 3.5mm;
[0036] (4) Intermediate annealing: After cutti...
Embodiment 2
[0057] A preparation method of 6111 aluminum alloy plate, comprising the following steps:
[0058] (1) Ingot preparation: 6111 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 80mm, and the ingredients and their mass percentages were: Si: 0.70%, Mg: 1.00%, Cu: 0.52%, Mn: 0.45%, Fe≤0.40%, Zn≤0.15%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;
[0059] (2) Heating: After the 6111 aluminum alloy ingot is cut and milled, it is heated to 350°C in a circulating air furnace, and after 6h of heat preservation, it is heated to 480°C and heat preservation of 2h;
[0060] (3) Hot rolling: hot rolling the 6111 aluminum alloy ingot after heat preservation, first rolling 3 passes along the width direction of the slab ingot, and then rolling 10 passes along the length direction of the slab ingot to obtain Hot-rolled plate; wherein, the thickness of the hot-rolled plate is 6mm;
[0061] (4) Intermediate annealing: Af...
Embodiment 3
[0069] A preparation method of 6111 aluminum alloy plate, comprising the following steps:
[0070] (1) Ingot preparation: 6111 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 100mm, and the ingredients and their mass percentages were: Si: 0.73%, Mg: 0.98%, Cu: 0.50%, Mn: 0.45%, Fe≤0.40%, Zn≤0.15%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;
[0071] (2) Heating: After the 6111 aluminum alloy ingot is cut and milled, it is heated to 400°C in a circulating air furnace, and after 4h of heat preservation, it is heated to 465°C and heat preservation of 3h;
[0072] (3) Hot rolling: hot rolling the 6111 aluminum alloy ingot after heat preservation, first rolling 5 passes along the width direction of the slab ingot, and then rolling 10 passes along the length direction of the slab ingot to obtain Hot-rolled sheet; wherein, the thickness of the hot-rolled sheet is 5mm;
[0073] (4) Intermediate annealing: A...
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