Preparation technology of high-strength aluminum alloy precision casting board

A technology of precision casting and preparation process, applied in the field of material processing, can solve the problems of insufficient, processing deformation casting plate strength, incomplete stress release, etc., and achieve the effect of eliminating internal stress, improving plate strength, and being difficult to process deformation.

Active Publication Date: 2020-01-17
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

[0005] In view of the above deficiencies, the present invention provides a preparation process of high-strength aluminum alloy precision casting plates, which can solve the problems of incomplete internal stress release of existing aluminum alloy precision casting plates resulting in processing deformation and insufficient strength of cast plates

Method used

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  • Preparation technology of high-strength aluminum alloy precision casting board
  • Preparation technology of high-strength aluminum alloy precision casting board
  • Preparation technology of high-strength aluminum alloy precision casting board

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Embodiment 1

[0038] Please refer to figure 1 , This preferred embodiment provides a process for preparing a high-strength aluminum alloy precision casting plate, which includes the following steps:

[0039] S1. Ingredients: ingredients according to the following weight percentages: Zn=5.5%, Mg=2.47%, Cu=1.8%, Si=0.12%, Fe=0.20%, Mn=0.09%, Cr=0.12%, Ti=0.02% , Zr=0.03%, the rest is Al and unavoidable impurities, this composition belongs to 7075 grade aluminum alloy. The components of this preferred embodiment are shown as A1 in Table 1.

[0040] S2. Melting and casting: Melting and casting are carried out according to the above ingredients to cast an ingot with a size of 360×1460×6700mm. During the smelting and casting process, the aluminum alloy melt is subjected to multi-stage degassing treatment to significantly reduce the gas content in the aluminum alloy melt and reduce the casting defects such as pores and porosity in the aluminum alloy ingot. Use a filter plate to remove oxides, non-met...

Embodiment 2

[0056] Please refer to figure 1 , This preferred embodiment provides a process for preparing a high-strength aluminum alloy precision casting plate, which includes the following steps:

[0057] S1. Ingredients: ingredients according to the following weight percentages: Zn=6.6%, Mg=2.40%, Cu=2.5%, Si=0.01%, Fe=0.02%, Mn=0.01%, Cr=0.01%, Ti=0.02% , Zr = 0.07%, the rest is Al and unavoidable impurities, this composition belongs to 7050 grade aluminum alloy. The components of this preferred embodiment are shown in Table 1 as B1.

[0058] S2. Melting and casting: Melting and casting are carried out according to the above ingredients to cast an ingot with a size of 520×1580×5800mm. During the smelting and casting process, the aluminum alloy melt is subjected to multi-stage degassing treatment to significantly reduce the gas content in the aluminum alloy melt and reduce the casting defects such as pores and porosity in the aluminum alloy ingot. Use a filter plate to remove oxides, non-m...

Embodiment 3

[0074] Please refer to figure 1 , This preferred embodiment provides a process for preparing a high-strength aluminum alloy precision casting plate, which includes the following steps:

[0075] S1. Ingredients: ingredients according to the following weight percentages: Zn=6.25%, Mg=2.34%, Cu=2.41%, Si=0.02%, Fe=0.04%, Mn=0.01%, Cr=0.01%, Ti=0.02% , Zr = 0.11%, the rest is Al and unavoidable impurities, this composition belongs to 7150 grade aluminum alloy. The components of this preferred embodiment are shown in Table 1 as C1.

[0076] S2. Melting and casting: Melting and casting are carried out according to the above ingredients to cast an ingot with a size of 420×1720×4500mm. During the smelting and casting process, the aluminum alloy melt is subjected to multi-stage degassing treatment to significantly reduce the gas content in the aluminum alloy melt and reduce the casting defects such as pores and porosity in the aluminum alloy ingot. Use a filter plate to remove oxides, non...

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Abstract

The invention discloses a preparation technology of a high-strength aluminum alloy precision casting board and relates to the technical field of material machining. According to the technology, on thebasis of the original technology, the technology is optimized, the steps of solid-solution quenching, three-level stretching and double-stage aging heat treatment and reasonable step technology parameters are introduced, the new technology mainly comprising dosing, smelting, casting, homogenizing treatment, machining treatment, solid solution quenching, three-stage stretching, double-stage agingheat treatment and machining treatment is formed, the problem that when an existing technology is used, stress in the aluminum alloy precise casting board is released incompletely, machining deformation is generated, and the strength is insufficient, and by means of the technology, the high-strength aluminum alloy precision casting board which is not prone to machining deformation and high in strength can be obtained.

Description

Technical field [0001] The invention relates to the technical field of material processing, in particular to a preparation process of a high-strength aluminum alloy precision casting plate. Background technique [0002] Because of the advantages of low density, high thermal conductivity, excellent machinability, high electrical conductivity, high recovery rate, and high dimensional accuracy of the cast plate, aluminum alloy precision casting plates are currently widely used in transportation, machinery and electronics, tooling and precision instruments And other fields. [0003] Existing conventional aluminum alloy precision casting plates are mainly 5 series and 6 series aluminum alloy casting plates, such as 5083 and 6061 grades of aluminum alloy precision casting plates, through smelting, casting, soaking, and machining (sawing, milling, Sometimes it also includes slitting), etc. The aluminum alloy cast plate has a specific metallurgical structure and quite ideal stress release...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053
CPCC22C21/10C22F1/053
Inventor 任月路赵启忠何建贤杨鸿驰朱希一黄亮韦修勋赵启淞
Owner 广西南南铝加工有限公司
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