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Preparation process of high-strength aluminum alloy plate and aluminum alloy plate

An aluminum alloy plate and a preparation process technology, applied in the field of aluminum alloy plate, can solve the problems of inability to satisfy the manufacturing and forming process of automobile structural parts, poor stamping performance, etc., and achieve the advantages of promoting dynamic recrystallization, reducing stress, and improving stamping performance. Effect

Inactive Publication Date: 2022-03-18
昆山风雷益铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, a high-strength aluminum alloy plate preparation process and aluminum alloy plate are provided. This technical solution solves the above-mentioned problems. The automotive field is concerned that the 7xxx series aluminum alloys have high hardness, but their own stamping performance is poor, which cannot meet the problems in the manufacturing and forming process of automotive structural parts.

Method used

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  • Preparation process of high-strength aluminum alloy plate and aluminum alloy plate
  • Preparation process of high-strength aluminum alloy plate and aluminum alloy plate
  • Preparation process of high-strength aluminum alloy plate and aluminum alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment: the composition ratio of the aluminum alloy is: Zn: 4.5%, Mg: 2.0%, Cu: 1.0%, Ni: 0.06%, Ti: 0.05%, Y: 0.02%, Zr: 0.02%, and the balance is Al

[0039] Heating: raise the temperature of the furnace to 500°C and keep it for a period of time. After the furnace temperature is stable, raise the furnace temperature to 780°C-800°C;

[0040] Metal ingot melting: Weigh the metal ingot according to the alloy ratio, put the metal ingot in the drying furnace for preheating and drying, then first add pure aluminum into the furnace, and simultaneously feed SF into the furnace 6 and N 2 Mix the protective gas, after the pure aluminum is completely melted, add the remaining metal ingots to the furnace, and stir the liquid alloy for 30s-45s to fully mix the alloy components;

[0041] Static removal of impurities: put the molten alloy in a liquid state for 30min-45min, and remove the oxide film on the surface of the liquid alloy;

[0042] Ultrasonic treatment: tra...

Embodiment 2

[0050] In this embodiment: the composition ratio of the aluminum alloy is: Zn: 5.2%, Mg: 1.2%, Cu: 1.8%, Ni: 0.02%, Ti: 0.15%, Y: 0.01%, Zr: 0.05%, and the balance is Al

[0051] Heating: raise the temperature of the furnace to 500°C and keep it for a period of time. After the furnace temperature is stable, raise the furnace temperature to 780°C-800°C;

[0052] Metal ingot melting: Weigh the metal ingot according to the alloy ratio, put the metal ingot in the drying furnace for preheating and drying, then first add pure aluminum into the furnace, and simultaneously feed SF into the furnace 6 and N 2 Mix the protective gas, after the pure aluminum is completely melted, add the remaining metal ingots to the furnace, and stir the liquid alloy for 30s-45s to fully mix the alloy components;

[0053] Static removal of impurities: put the molten alloy in a liquid state for 30min-45min, and remove the oxide film on the surface of the liquid alloy;

[0054] Ultrasonic treatment: tra...

Embodiment 3

[0062] Embodiment two:

[0063] In this embodiment: the composition ratio of the aluminum alloy is: Zn: 4.8%, Mg: 1.6%, Cu: 1.5%, Ni: 0.06%, Ti: 0.08%, Y: 0.02%, Zr: 0.05%, and the balance is Al

[0064] Heating: raise the temperature of the furnace to 500°C and keep it for a period of time. After the furnace temperature is stable, raise the furnace temperature to 780°C-800°C;

[0065] Metal ingot melting: Weigh the metal ingot according to the alloy ratio, put the metal ingot in the drying furnace for preheating and drying, then first add pure aluminum into the furnace, and simultaneously feed SF into the furnace 6 and N 2 Mix the protective gas, after the pure aluminum is completely melted, add the remaining metal ingots to the furnace, and stir the liquid alloy for 30s-45s to fully mix the alloy components;

[0066] Static removal of impurities: put the molten alloy in a liquid state for 30min-45min, and remove the oxide film on the surface of the liquid alloy;

[0067]...

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Abstract

The invention discloses a high-strength aluminum alloy plate preparation process and an aluminum alloy plate, and relates to the field of aluminum alloy plates, the preparation process comprises alloy preparation, ultrasonic treatment, casting extrusion molding, primary aging treatment, rolling into a plate, solid solution quenching and secondary aging treatment; the aluminum alloy plate is made of an Al-Zn-Mg-Cu series alloy, and is specifically made of the following metals in percentage by mass: 4.5 to 5.2 percent of Zn, 1.2 to 2.0 percent of Mg, 1.0 to 1.8 percent of Cu, 0.02 to 0.06 percent of Ni, 0.05 to 0.15 percent of Ti, 0.01 to 0.02 percent of Y, 0.02 to 0.05 percent of Zr and the balance of Al. The method has the beneficial effects that the semi-solid forming and casting-extruding integrated forming technology is adopted, the grain size in the aluminum alloy is effectively reduced in the metal forming step, meanwhile, multi-time multi-stage aging treatment is adopted, deformation stress generated in the rolling process of the alloy is fully eliminated, recrystallization in the alloy is promoted, and therefore the service life of the aluminum alloy is prolonged. And the grain size in the aluminum alloy is improved, the plasticity of the aluminum alloy is effectively improved, and the punch forming performance of the alloy is improved.

Description

technical field [0001] The invention relates to the field of aluminum alloy plates, in particular to a high-strength aluminum alloy plate preparation process and the aluminum alloy plate. Background technique [0002] Since the 21st century, with the continuous improvement of the industrialization level of various countries in the world, a series of energy crises and environmental problems have become more and more serious. Energy conservation and emission reduction have become the main theme of production and life in today's society. Under this theme, countries have adopted many measures to solve energy consumption and environmental problems. The automotive field is no exception, and the following research directions, such as how to improve the efficiency of automobile engines, research on new energy vehicles, and how to effectively reduce the weight of automobiles, have become recent research hotspots in the field of automobile lightweight. Compared with other materials, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/10B22D17/00C21D9/00C22F1/053
CPCC22C1/026C22C21/10B22D17/007C22F1/053C22F1/002C21D9/0081
Inventor 庞荣伟
Owner 昆山风雷益铝业有限公司
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