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Manufacturing method for 2xxx series ultra-large-dimension aluminum alloy round ingot

A technology with super-large specifications and manufacturing methods, which is applied in the field of aluminum alloy processing, can solve the problems of casting molding and metallurgical quality, which cannot meet the needs, coarse grains, etc., and achieve good comprehensive mechanical properties, good strength and plasticity, and smooth surface Effect

Active Publication Date: 2015-07-29
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the advancement of domestic smelting, degassing, casting and other technologies and the continuous improvement of customer specifications and performance, the requirements for the specifications of 2219 alloy round ingots are getting larger and larger. The traditional medium specifications can no longer meet the needs, and there is an urgent need Oversized round ingots
The key to the production of super-large-sized round ingot forging blanks lies in the control of casting molding and internal metallurgical quality. However, with the increase of ingot size, segregation, coarse grains, looseness, cracks, coarse metal compounds, and brightness are prone to occur during casting. Crystal, feather crystal and other metallurgical defects, casting molding and metallurgical quality are difficult to guarantee

Method used

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  • Manufacturing method for 2xxx series ultra-large-dimension aluminum alloy round ingot
  • Manufacturing method for 2xxx series ultra-large-dimension aluminum alloy round ingot

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Casting large-scale aluminum alloy round ingots with a specification of Φ915mm×6000mm, the production process includes the steps of material preparation, melting, furnace refining, on-line refining, on-line filtration, semi-continuous casting, homogenization heat treatment, machining and ultrasonic flaw detection, as follows :

[0040] (1) Material preparation: According to the mass percentage of each chemical composition in the aluminum alloy round ingot: Cu 6.8%, Mn 0.4%, V 0.10%, Zr 0.15%, Ti 0.08%, Be 0.0005%, Zn≤0.1%, Mg≤ 0.01%, Si≤0.10%, Fe≤0.20%, the balance is Al and unavoidable impurities for batching, respectively weighing aluminum ingots for remelting, cathode copper, aluminum-copper master alloy, aluminum-titanium master alloy, aluminum-manganese intermediate alloy, aluminum zirconium master alloy, aluminum vanadium master alloy, aluminum beryllium master alloy as raw materials;

[0041] (2) Melting: Put the raw materials in step (1) except aluminum-titaniu...

Embodiment 2

[0050] Casting ultra-large aluminum alloy round ingots with specifications of Φ1220mm×6000mm, the production process includes the steps of material preparation, melting, furnace refining, on-line refining, on-line filtration, semi-continuous casting, homogenization heat treatment, machining and ultrasonic flaw detection, as follows :

[0051] (1) Material preparation: according to the mass percentage of each chemical composition in the aluminum alloy round ingot: according to the mass percentage of each chemical composition in the aluminum alloy round ingot: Cu 6.1%, Mn 0.25%, V 0.06%, Zr 0.16%, Ti 0.09%, Be 0.0006%, Zn ≤ 0.1%, Mg ≤ 0.02%, Si ≤ 0.10%, Fe ≤ 0.20%, the balance is Al and unavoidable impurities for batching, respectively weighing aluminum ingots for remelting, cathode copper , aluminum-copper master alloy, aluminum-titanium master alloy, aluminum-manganese master alloy, aluminum-zirconium master alloy, aluminum-vanadium master alloy, aluminum-beryllium master allo...

Embodiment 3

[0060] Casting ultra-large aluminum alloy round ingots with specifications of Φ1050mm×6500mm, the production process includes the steps of material preparation, smelting, furnace refining, on-line refining, on-line filtration, semi-continuous casting, homogenization heat treatment, machining and ultrasonic flaw detection, as follows :

[0061] (1) Material preparation: According to the mass percentage of each chemical composition in the aluminum alloy round ingot, Cu 5.9%, Mn 0.35%, V 0.15%, Zr 0.15%, Ti 0.08%, Be 0.0010%, Zn≤0.1%, Mg≤0.01 %, Si≤0.20%, Fe≤0.30%, the balance is Al and unavoidable impurities for batching, respectively weighing aluminum ingots for remelting, cathode copper, aluminum-copper master alloy, aluminum-titanium master alloy, aluminum-manganese master alloy , aluminum zirconium master alloy, aluminum vanadium master alloy, aluminum beryllium master alloy as raw materials;

[0062] (2) Melting: put the raw materials in step (1) except aluminum-titanium m...

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Abstract

The invention discloses a manufacturing method for a 2xxx series ultra-large-dimension aluminum alloy round ingot, and relates to the technical field of aluminum alloy processing. The method comprises the steps of material preparation, smelting, in-furnace refining, online refining, online filtering, semi-continuous casting, homogenization heat treatment, machining and ultrasonic flaw detection. Improvements are made in the aspects of smelting, in-furnace refining, online refining, online filtering, semi-continuous casting and the like, and a method capable of improving the cast ingot quality and improving the production efficiency is provided, so that the cast ingot is fine in tissue, uniform in component and free of other metallurgical defects, and has the specification reaching phi 900 mm to phi 1,340 mm, the grain size capable of reaching a first grade, the hydrogen content not greater than 0.10 ml / 100 g Al and the finished product rate reaching greater than 90%.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to a method for manufacturing a 2xxx series ultra-large aluminum alloy round ingot. Background technique [0002] 2219 aluminum alloy is a medium-high-strength aluminum alloy in the aluminum-copper-manganese series. It has good high and low temperature mechanical properties, weldability, fracture toughness, corrosion resistance and easy processing. It is a typical heat-treatable forged aluminum alloy. Products are used in aviation, aerospace and other fields in different forms and heat treatment states. Large-size round ingots are mainly used to make forged rings, and the process route is: forging billet opening-punching-hot ring rolling-quenching-cold rolling-artificial aging, etc. With the advancement of domestic smelting, degassing, casting and other technologies and the continuous improvement of customer specifications and performance, the requirements for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/00B22D7/00
Inventor 乐永康姚祥唐露华何克准蓝东华
Owner 广西南南铝加工有限公司
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