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Preparation process of 5754 aluminum alloy plate with high formability

A technology of aluminum alloy plate and preparation process, which is applied in the direction of manufacturing tools, metal rolling, heat treatment equipment, etc., can solve the problems of insufficient formability and cracking of finished materials, achieve uniform structure and composition of ingots, reduce stamping costs, reduce Effects of non-equilibrium and eutectic phases

Inactive Publication Date: 2021-03-26
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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Problems solved by technology

[0004] In view of this, the present invention provides a high-formability 5754 aluminum alloy plate in order to solve the problem of insufficient formability of the finished material and the risk of cracking during the stamping and forming process of the 5754-O state aluminum alloy prepared by the existing preparation process. preparation process

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  • Preparation process of 5754 aluminum alloy plate with high formability
  • Preparation process of 5754 aluminum alloy plate with high formability
  • Preparation process of 5754 aluminum alloy plate with high formability

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Embodiment

[0029] A preparation process of high formability 5754 aluminum alloy plate, comprising the following steps:

[0030] A. Ingredients: 5754 aluminum alloy raw materials are mixed according to weight percentage, namely Si: 0.15%, Fe: 0.35%, Cu: 0.10%, Mn: 0.30%, Mg: 3.10%, Cr: 0.12%, Zn: 0.08% , Ti: 0.03%, impurity ≤ 0.05%, the balance is Al;

[0031] B. Melting and casting: Add the prepared aluminum alloy raw materials into the smelting furnace and mix them evenly to melt them into liquid aluminum alloys. After standing still, refining, slag removal, online degassing, and filtering processes, the liquid aluminum alloys are melted and cast into aluminum alloys. Ingot casting, aluminum alloy ingots are cast by electromagnetic stirring, and the furnace top temperature control mode is selected for smelting. The temperature of the molten aluminum is controlled at 720-760°C during the smelting process. During the casting process, the dummy head is used for traction casting, and the am...

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Abstract

The invention belongs to the field of aluminum alloy machining and manufacturing, and relates to a preparation process of 5754 aluminum alloy plate with high formability. The aluminum alloy raw material is composed of, in percentage by weight, less than or equal to 0.15% of Si, 0.20-0.35% of Fe, less than or equal to 0.10% of Cu, 0.20-0.30% of Mn, 2.80-3.10% of Mg, 0.08-0.12% of Cr, less than or equal to 0.08% of Zn, 0.01-0.03% of Ti, less than or equal to 0.05% of single impurity, less than or equal to 0.15% of total impurity, and the balance Al. The preparation process comprises the following steps that the aluminum alloy raw material is prepared to make an aluminum alloy ingot, the aluminum alloy ingot is subjected to homogenizing treatment at proper homogenization temperature, intracrystalline segregation and dendrite segregation are eliminated after thermal insulation is carried out on the ingot, rough non-equilibrium phases and eutectic phases are reduced, cast ingot structures and components are uniform, the hot rolling speed is controlled, precipitated phases are promoted to be fully crushed, the rolling reduction is controlled and intermediate annealing is added in a coldrolling stage, and the final finished product has good forming performance and comprehensive mechanical performance.

Description

technical field [0001] The invention belongs to the field of aluminum alloy processing and manufacturing, and relates to a preparation process of a high formability 5754 aluminum alloy plate, in particular to a preparation process of a high formability 5754-O state aluminum alloy plate. Background technique [0002] With the continuous development of the industrial level, the automotive industry has higher and higher requirements for the lightweight of manufacturing materials. As a kind of renewable energy, aluminum alloy can maximize the light weight of materials and achieve the purpose of energy saving and emission reduction while meeting the requirements of industrial material performance. [0003] The 5754-O alloy produced by the existing process has a high cracking tendency in the subsequent stamping process, and necking or cracking is prone to occur at the position with a large stamping depth. In the aluminum alloy manufacturing process, the homogenization before hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/08C22F1/047C21D9/46B21B3/00
CPCB21B3/00B21B2003/001C21D9/46C22C1/026C22C21/08C22F1/047
Inventor 付凯王飞祖立成崔立治冉凡青尹竹松刘昊
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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