Preparation method of aluminum alloy coiled material for tank body

An aluminum alloy and aluminum alloy ingot casting technology, which is applied in the field of aluminum alloy coil preparation for tanks, can solve the problem of unstable surface color consistency of different batches of materials, dull surface color, and unstable surface color consistency of batches of materials and other problems, to achieve the effect of saving surface treatment cost, improving surface brightness, and reducing lateral surface chromatic aberration

Active Publication Date: 2017-05-31
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The aluminum alloy materials produced by the process preparation method in the prior art often have shortcomings such as dull surface col

Method used

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  • Preparation method of aluminum alloy coiled material for tank body

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Effect test

Embodiment 1

[0031] Embodiment 1 provides a method for producing aluminum-magnesium alloy coils according to traditional techniques.

[0032] Step (1): Melting according to the traditional aluminum-magnesium alloy components, degassing and filtering, then semi-continuous casting to cast a flat ingot with a width of 2650mm.

[0033] Step (2): Cut the head and tail of the slab and face milling.

[0034] Step (3): The slab is hot-rolled into a billet. The finishing temperature of the hot rolling is 260° C., and the thickness of the billet is 6 mm.

[0035] Step (4): Annealing the billet, the annealing temperature is 180°C, and the holding time is 10h. The final coil is obtained after annealing.

Embodiment 2

[0037] Embodiment 2 provides a method for preparing aluminum alloy coils for cans disclosed by the present invention, which includes the following steps:

[0038] (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: 3%, Mn: 0.5%, Si: 0.2%, Cr: 0.2%, Cu: 0.1%, Fe: 0.2%, Zn: 0.2%, Ti: 0.1%, the rest is Al and unavoidable impurity elements; the aluminum alloy melt is subjected to secondary degassing and tertiary slag removal purification treatment Finally, the aluminum alloy ingot is cast by the hot top semi-continuous casting process, the width of the aluminum alloy ingot is 2650mm, and the ingot type is a flat ingot.

[0039] (2) Hot rolling: Preheat the aluminum alloy ingot, and after preheating the aluminum alloy ingot, hot roll it into a billet. The roughness of the hot rolling work roll is 1.0 μm, and the thickness of the billet is reserved for cold rolling by 13%. T...

Embodiment 3

[0045] Embodiment 3 provides a method for preparing aluminum alloy coils for cans disclosed by the present invention, which includes the following steps:

[0046] (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: 2.5%, Mn: 0.2%, Si: 0.1%, Cr: 0.1%, Cu: 0.1%, Fe: 0.2%, Zn: 0.2%, Ti: 0.1%, the rest is Al and unavoidable impurity elements; the aluminum alloy melt is subjected to secondary degassing and tertiary slag removal purification treatment Finally, the aluminum alloy ingot is cast by the hot top semi-continuous casting process, the width of the aluminum alloy ingot is 1500mm, and the ingot type is a flat ingot.

[0047] (2) Hot rolling: Preheat the aluminum alloy ingot, and after preheating the aluminum alloy ingot, hot roll it into a billet. The roughness of the hot rolling work roll is 1.0 μm, and the thickness of the billet is reserved for cold rolling by 5%. ...

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Abstract

The invention discloses a preparation method of an aluminum alloy coiled material for a tank body. The preparation method comprises the following steps: ingot casting, hot rolling, cold rolling, re-cleaning, finished product annealing, bright rolling and the like. According to the preparation method, by utilizing novel process preparation steps and reasonable parameter settings, the surface brightness of a product can be improved on the premise that mechanical properties of aluminum alloy meet design requirements of a tank car manufacturing factory, the transverse surface chromatic aberration of wide coiled materials/panels and the like can be reduced, and the surface chromatic aberration of different batches of the coiled materials/panels can be reduced; and the procedures of subsequent chemical polishing and the like can be omitted, so that the later-period surface treatment cost can be lowered. Compared with traditional aluminum alloy coiled material production schemes, the preparation method has the advantages that the process can be utilized for producing the aluminum alloy coiled materials/panels for a tank body of a tank car and can meet the requirement of the tank car manufacturing factory on the further reduction of the weight of the tank body as well as the requirement of a tank car customer on the aesthetic sense of the tank car.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a method for preparing aluminum alloy coils for tank bodies. Background technique [0002] As an important means of lightweighting automobiles, aluminum alloy materials have been widely used in the transportation industry such as the tanker industry. The surface of the traditional tank car body is painted, and the weight of the paint film can reach 120kg. The development trend of the aluminum alloy tank car nowadays is to keep the original rolled surface of the plate after the aluminum alloy plate is made into the tank body, and the tank body is no longer painted. In order to achieve the purpose of further reducing the weight of the tank body. Under this trend, tank car customers have higher and higher requirements on the surface quality of tank bodies. [0003] The factors affecting the surface quality of aluminum alloy sheets mainly include ingot purity, ro...

Claims

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Application Information

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IPC IPC(8): C22F1/047C22F1/02C22C21/08C22C21/06
CPCC22C21/06C22C21/08C22F1/02C22F1/047
Inventor 黄程毅曹盛强邓松云赵启淞任月路胡传彬王华春
Owner 广西南南铝加工有限公司
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