Method for improving corrosion resistance of 5083 aluminum alloy plate

A technology of aluminum alloy sheet and corrosion resistance, applied in the field of aluminum alloy processing, can solve the problems of high energy consumption, metal oxidation loss, long time, etc., and achieve the effects of improving economic benefits, reducing dislocation density, and enhancing corrosion resistance

Active Publication Date: 2018-07-17
CENT SOUTH UNIV
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  • Application Information

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Problems solved by technology

[0005] In order to achieve the above object, the present invention provides an ingot homogenization method to improve the corrosion resistance of 5083 aluminum alloy plates, which solves the problem of large energy consumption, long time and serious metal oxidation loss in the homogenization of 5083 aluminum alloy plates in existing industrial production. problem, and good corrosion resistance

Method used

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  • Method for improving corrosion resistance of 5083 aluminum alloy plate
  • Method for improving corrosion resistance of 5083 aluminum alloy plate
  • Method for improving corrosion resistance of 5083 aluminum alloy plate

Examples

Experimental program
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Embodiment 1

[0033] Cut the ingot into blocks with a thickness of 510mm; then heat the ingot at 500°C for 4 hours for homogenization; hot-roll the ingot at 510°C for 3 passes to 8mm, and ensure the temperature during the entire thermal processing process Higher than 360°C; carry out five passes of cold rolling with low deformation, the cold rolling deformation is 45%-55%, and the thickness of the aluminum plate after rolling is 4mm; after cold rolling, the material is annealed at 500°C for 3 hours to obtain High corrosion resistance 5083 aluminum alloy O-state plate.

Embodiment 2

[0035] Cut the ingot into blocks with a thickness of 520mm; then heat the ingot at 530°C for 6 hours for homogenization; hot-roll the ingot at 510°C for 4 passes to 9mm, and ensure the temperature during the entire thermal processing process Higher than 360°C; carry out five passes of cold rolling with low deformation, the cold rolling deformation is 45%-55%, and the thickness of the aluminum plate after rolling is 4mm; after cold rolling, the material is annealed at 510°C for 3 hours to obtain High corrosion resistance 5083 aluminum alloy O-state plate.

Embodiment 3

[0037] Cut the ingot into blocks with a thickness of 530mm; then heat the ingot at 560°C for 8 hours for homogenization; hot-roll the ingot at 510°C for 3 passes to 10mm, and ensure the temperature during the entire hot processing process Higher than 360°C; five passes of cold rolling with low deformation, the cold rolling deformation is 45%-55%, and the thickness of the rolled aluminum plate is 4mm; after cold rolling, the material is annealed at 520°C for 3 hours to obtain High corrosion resistance 5083 aluminum alloy O-state plate.

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Abstract

The invention discloses a cast ingot uniformizing method for improving the corrosion resistance of a 5083 aluminum alloy plate. The cast ingot uniformizing method for improving the corrosion resistance of the 5083 aluminum alloy plate comprises the steps that a cast ingot is cut to be in a block shape; then the cast ingot is subjected to heat preservation at the temperature of 500-560 DEG C for 4-8 h for homogenizing treatment; the cast ingot is hot-rolled to 8-10 mm; low-deformation cold rolling is conducted for five passes till the thickness of the aluminum plate reaches 4 mm; and after coldrolling, the aluminum plate is annealed, and thus, an O-state 5083 aluminum alloy plate with high corrosion resistance is obtained. By the adoption of the cast ingot uniformizing method for improvingthe corrosion resistance of the 5083 aluminum alloy plate, the problems that during existing industrial production, energy consumption for uniformizing the 5083 aluminum alloy plate is high, the timefor uniformizing the 5083 aluminum alloy plate is long, and the metal oxidization loss is large are solved; and the corrosion resistance of the 5083 aluminum alloy plate treated through the cast ingot uniformizing method is very good.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy processing, and relates to an ingot homogenization method for improving the corrosion resistance of 5083 aluminum alloy plates. Background technique [0002] 5083 aluminum alloy has high strength and good corrosion resistance, so it is widely used in shipbuilding industry. The industrial production process of 5083 ship plate is mainly casting, homogenization, hot rolling, cold rolling and annealing. Among them, homogenization heat treatment has always been considered as an indispensable part of the production of 5083 plates. The homogenization process affects the recovery and recrystallization behavior of the plate during subsequent heat treatment, resulting in different microstructures; homogenization has an impact on the size and density of the second phase Homogenization and distribution also have an important impact; elimination or reduction of the genetic microstructure that deviates ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/047
CPCC22F1/047
Inventor 黄元春郭晓芳邵虹榜
Owner CENT SOUTH UNIV
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