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Forming method of aluminum alloy sheet in artificial natural aging state

A technology of artificial aging and aluminum alloy, which is applied in the direction of using liquid cleaning methods, chemical instruments and methods, cleaning methods and utensils, etc., can solve the problems of high energy consumption, low material performance, low efficiency, etc., and achieve improved material forming properties , improve the roughness, and the effect of simple process

Active Publication Date: 2016-01-06
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for forming artificially aged aluminum alloy sheets, which overcomes the disadvantages of low efficiency, high energy consumption, and low material properties in the existing aluminum alloy preparation process. The process has the advantages of low manufacturing cost, Better machinability and maintain material properties etc.

Method used

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  • Forming method of aluminum alloy sheet in artificial natural aging state

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Embodiment 1

[0028] (1) Prepare the cleaning solution to clean the mold surface according to the steps of cleaning and removing black film. The cleaning solution composition is to include by weight %: 45g of hydrochloric acid, 0.2g of EDTA, 65g of corrosion inhibitor, and 1000g of water. Then use mold cleaning glue to clean the mold surface so that the surface roughness of the mold is Ra0.6.

[0029] (2) Use a clean cotton cloth dipped in ethanol to wipe the surface of the 2E12-T6 aluminum alloy slab (thickness 1.5mm) clean, visually inspect the oil-free cotton cloth, use a fine sand felt to dip in deionized water and corundum sand with a particle size of 20 μm Manually polish the surface of the aluminum alloy slab (thickness 1.5mm), use deionized water to clean the surface of the part to be brushed for 5 minutes, and dry the surface of the aluminum alloy slab (thickness 1.5mm) with oil-free and water-free compressed air.

[0030] (3) Place the flexible heat insulation pad above the lower ...

Embodiment 2

[0036] (1) Prepare the cleaning solution to clean the mold surface according to the steps of cleaning and removing black film. The cleaning solution composition is to include by weight %: 45g of hydrochloric acid, 0.2g of EDTA, 65g of corrosion inhibitor, and 1000g of water. Then use mold cleaning glue to clean the mold surface so that the surface roughness of the mold is Ra0.6.

[0037] (2) Use a clean cotton cloth dipped in ethanol to wipe the surface of the 2E12-T6 aluminum alloy slab (thickness 1.5mm) clean, visually inspect the oil-free cotton cloth, use a fine sand felt to dip in deionized water and corundum sand with a particle size of 20 μm Manually polish the surface of 2E12-T6 aluminum alloy slab (thickness 1.5mm), use deionized water to clean the part surface to be brushed for 10 minutes, and dry the surface of aluminum alloy slab (thickness 1.5mm) with oil-free and water-free compressed air .

[0038] (3) Place the flexible heat insulation pad above the lower mold...

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Abstract

The invention provides a forming method of an aluminum alloy sheet in an artificial aging state. A mold is cleaned with cleanser and mold cleaning glue, the surface roughness of the mold is improved, and scratches to the surface of a part in the forming process are reduced. The sheet is preheated in an induction rapid heating manner, and the material forming performance is effectively improved. In addition, due to the short heating time, precipitated phase redissolution or recrystallization cannot happen to materials, and the material performance cannot change in the heating process. The mold is cooled, part heat can be taken away rapidly in the forming process, and therefore the material performance cannot change in the forming process. The aluminum alloy sheet in the artificial aging state is formed, the process is simple, cost is low, and large-scale industrial production is achieved easily.

Description

technical field [0001] The invention relates to a forming method of a gold thin plate, in particular to a forming method of an artificially aged aluminum alloy thin plate. Background technique [0002] Aluminum alloy is widely used as the main structure of sheet metal parts and aircraft because of its comprehensive properties such as high fracture toughness, good fatigue resistance and good corrosion resistance. Since the 2E12-T6 aluminum alloy sheet has undergone artificial aging, the formability at room temperature is only one-third of that of the annealed sheet, so the springback of the part after forming is serious. Therefore, at present, annealed plates are mostly used for forming, and quenching, shape correction, and artificial aging are performed after forming. Although parts can be manufactured through such a process, there are disadvantages such as grain coarsening, strength reduction, slip lines, surface scratches, high energy consumption, and low production effic...

Claims

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Application Information

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IPC IPC(8): B21D22/02B21D37/16B08B3/08B08B7/00
Inventor 伊琳娜陈军洲李国爱李超何维维
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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