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

Inactive 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] In the case of high tensile strength, the elongation value of the existing aluminum alloy is relatively low, although it meets the national standard but cann

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses an aluminium alloy sheet preparation method. The aluminium alloy sheet preparation method comprises ingot casting, hot rolling, cold rolling, straightening, sheet cutting, annealing and the like. In the ingot casting process, specific aluminium alloy components are provided, and specific process preparation within the range of the components is carried out in the follow-up process steps. Compared with a traditional high-magnesium aluminium alloy sheet production scheme, the aluminium alloy sheet preparation method has the advantages that the elongation value of a produced high-performance aluminium alloy sheet is greatly improved on the premise of guaranteeing that the tensile strength is qualified, materials meet the design demand that a tank body of an oil tank truck is reduced in wall thickness, and the fluctuation range of mechanical performance indexes, particularly the elongation values, of different batches of the materials, and the fluctuation range of mechanical performance indexes, particularly the elongation values, of different batches of wide sheets, as well as wide sheets and ordinary-width sheets, are reduced to satisfy the requirements of ADR (Autorisation Dangerous Road) and the automobile industry quality system.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a method for preparing an aluminum alloy plate. Background technique [0002] The application of aluminum alloy materials is an important way to reduce the weight of tank trucks. The weight of aluminum alloy tank trucks can be about 30% lighter than that of steel tank trucks. According to the ADR (Autorisation Dangerous Road, European Road Transport of Dangerous Goods Agreement) standard, the wall thickness design of the tank truck body is related to the product of the tensile strength and elongation of the material. In general, the tensile strength and elongation of the same alloy material have a trade-off pattern, and the increase in elongation contributes more to improving the product of tensile strength and elongation and reducing the wall thickness of the tank. [0003] At present, the main forming process of the tank head of the tank truck is bulging and...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C21/06C22F1/047
CPCC22C21/08C22C21/06C22F1/047
Inventor 黄程毅邓松云曹盛强韦昌任月路黄善友王华春
Owner 广西南南铝加工有限公司
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