A kind of al-zn-mg aluminum alloy sheet and preparation method thereof

An aluminum alloy and plate technology, applied in the field of metal materials and their processing, can solve the problems of poor stamping and bending properties, large milling waste, material waste, etc., to improve the strength and hardness, control the grain size, and have no grain Effect

Active Publication Date: 2019-05-31
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor stamping and bending performance of the electronic appearance parts prepared by Al-Zn-Mg aluminum alloy rolling plate, CNC milling is usually used. Compared with the stamping preparation process, CNC milling will produce larger milling waste, resulting in A lot of material waste, not conducive to environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An Al-Zn-Mg aluminum alloy thin plate, the aluminum alloy thin plate mainly includes the following elements in terms of mass percentage: Mg=1.0, Zn=5.5, Cu=0.05, Fe=0.08, Si=0.05, Cr =0.05, Ni=0.05; Zr=0.1, the balance is Al and unavoidable elements, each unavoidable element is less than 0.05 and the total is less than 0.15.

[0034] The present invention also provides a method for preparing the above-mentioned Al-Zn-Mg aluminum alloy thin plate, the method comprising the following steps:

[0035] (1) Melting: Mix various raw materials according to weight percentage, heat to 750°C to melt the materials, and keep warm for 7 hours;

[0036] (2) Degassing and filtering: degassing the molten aluminum after degassing, and then filtering to remove the insoluble matter in the aluminum melt;

[0037] (3) Casting: pour the degassed and filtered aluminum liquid, cool it to room temperature, and obtain an ingot with a thickness of 400 mm;

[0038](4) Soaking treatment: Place the...

Embodiment 2

[0049] An Al-Zn-Mg aluminum alloy thin plate, the aluminum alloy thin plate mainly contains the following elements in terms of mass percentage: Mg=1.3, Zn=5.8, Cu=0.04, Fe=0.06, Si=0.04, Cr =0.03, Ni=0.07; Zr=0.12, the balance is Al and unavoidable elements, each unavoidable element is less than 0.05 and the total is less than 0.15.

[0050] The present invention also provides a method for preparing the above-mentioned Al-Zn-Mg aluminum alloy thin plate, the method comprising the following steps:

[0051] (1) Melting: Mix various raw materials according to weight percentage, heat to 750°C to melt the materials, and keep warm for 6 hours;

[0052] (2) Degassing and filtering: degassing the molten aluminum after degassing, and then filtering to remove the insoluble matter in the aluminum melt;

[0053] (3) Casting: pour the degassed and filtered aluminum liquid, cool it to room temperature, and obtain an ingot with a thickness of 360mm;

[0054] (4) Soaking treatment: Place th...

Embodiment 3

[0065] An Al-Zn-Mg aluminum alloy thin plate, the aluminum alloy thin plate mainly contains the following elements in terms of mass percentage: Mg=2.0, Zn=6.1, Cu=0.05, Fe=0.07, Si=0.04, Cr =0.04, Ni=0.09; Zr=0.15, the balance is Al and unavoidable elements, each unavoidable element is less than 0.05 and the total is less than 0.15.

[0066] The present invention also provides a method for preparing the thin plate in the above-mentioned Al-Zn-Mg aluminum alloy, the method comprising the following steps:

[0067] (1) Melting: Mix various raw materials according to weight percentage, heat to 760°C to melt the materials, and keep warm for 5 hours;

[0068] (2) Degassing and filtering: degassing the molten aluminum after degassing, and then filtering to remove the insoluble matter in the aluminum melt;

[0069] (3) Casting: pour the degassed and filtered aluminum liquid, cool it to room temperature, and obtain an ingot with a thickness of 360mm;

[0070] (4) Soaking treatment: P...

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Abstract

The invention belongs to the field of metal materials and machining technologies of the metal materials and discloses a manufacturing method of a Al-Zn-Mg aluminum alloy thin plate. The Al-Zn-Mg aluminum alloy thin plate mainly comprises the following elemental components of 1.0-3.8 of Mg, 5.0-8.0 of Zn, no more than 0.05 of Cu, no more than 0.08 of Fe, no more than 0.05 of Si, no more than 0.05 of Cr, 0.05-0.2 of Ni, 0.1-0.6 of Zr and the balance Al and inevitable elements, wherein each of the inevitable elements is smaller than 0.05, and the total amount of the inevitable elements is 0.15. The manufacturing method mainly adopts hot rolling, cold rolling, pretreatment, stamping and aging treatment; the thickness of the prepared aluminum alloy thin plate is 0.2-5 mm, and the prepared aluminum alloy thin plate has good finished product mechanical performance; and after anodizing, the surface of the plate is consistent, a bank mark and a bright streak are avoided, the color of the plateis uniform and close to the natural color of pure aluminum metal.

Description

technical field [0001] The invention belongs to the technical field of metal materials and processing thereof, and relates to an aluminum alloy plate, in particular to an Al-Zn-Mg aluminum alloy thin plate and a preparation method thereof. Background technique [0002] Consumer electronic products, such as: smartphones, smart wearable devices, tablet computers, etc., require materials to have the characteristics of light weight, high strength, good thermal conductivity, electromagnetic shielding, easy processing, and good appearance. The thin-walled direction is developed in order to achieve the functions of protection, heat dissipation and beauty. The materials usually used are composite plastics of ABC and PC engineering plastics and carbon fiber or glass fiber. There are also some high-end consumer electronic appearance parts made of magnesium, titanium, aluminum, etc. Alloy manufacture of light metals. With the development of the aluminum industry, aluminum and aluminum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22F1/053
CPCC22C21/10C22F1/053
Inventor 莫宇飞姜文平朱玉涛何建贤向晶李剑邓松云赵解扬
Owner 广西南南铝加工有限公司
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