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Manufacturing method of high-strength aluminum alloy strip for supporting middle plate of mobile phone

The technology of an aluminum alloy strip and a manufacturing method is applied to the manufacturing field of high-strength aluminum alloy strips for mobile phone support mid-plates, which can solve the problems of magnetism, inability to meet stamping and drawing forming, and heavy weight of mobile phone support mid-plates, and achieves crystal-clear performance. The effect of uniform refinement of granular tissue, light weight, and improved strength

Active Publication Date: 2016-04-20
重庆市灿煜金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a manufacturing method for high-strength aluminum alloy strips that can be used for mobile phone support panels, which can effectively solve the existing weight of the existing mobile phone support panels. Heavy, magnetic, or unsuitable for stamping and stretching

Method used

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  • Manufacturing method of high-strength aluminum alloy strip for supporting middle plate of mobile phone

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Embodiment 1

[0020] This embodiment discloses a method for manufacturing a high-strength aluminum alloy strip that can be used for mobile phone support plates, including the following steps:

[0021] (1) Preparation of aluminum alloy melt: determination of chemical composition, the mass percentage of each element in aluminum alloy is: Si: 0.15% or less, Fe: 0.2% or less, Cu: 0.05% or less, Mn: 0.3% or less, Mg: 5.3-6.0%, Cr: less than 0.15%, Zn: less than 0.1%, Ti: less than 0.25%, single impurity: ≤0.05%, total impurity: ≤0.15%, and the rest is aluminum; Take high-purity aluminum ingots with an aluminum content of 99.85%, aluminum-manganese, and aluminum-magnesium intermediate alloys as raw materials, and then put them into a melting furnace, and melt them into aluminum alloy melts at 620°C to 650°C.

[0022] (2) Casting: Cast the aluminum alloy solution according to the casting temperature of 700°C-750°C and the casting speed of 60-65mm / min, air-cool it out of the furnace, saw it into al...

Embodiment 2

[0025] The difference between this example and the previous example 1 is that the mass percentages of the elements in the aluminum alloy in step (1) are Si: 0.15% or less, Fe: 0.2% or less, Cu: 0.05% or less, Mn: 0.3% or less, Mg: 5.3-6.0%, Cr: 0.15% or less, Zn: 0.1% or less, Ti: 0.25% or less, single impurity: ≤0.05%, total impurity: ≤0.15%, and the rest is aluminum. Other steps and parameters are the same as in Example 1.

Embodiment 3

[0027] The difference between this example and Example 1 or 2 is that the mass percentages of the elements in the aluminum alloy in step (1) are Si: 0.15% or less, Fe: 0.2% or less, Cu: 0.05% or less, Mn: 0.3% or less , Mg: 5.3-6.0%, Cr: 0.15% or less, Zn: 0.1% or less, Ti: 0.25% or less, single impurity: ≤0.05%, total impurity: ≤0.15%, and the rest is aluminum. Other steps and parameter are identical with embodiment 1 or 2.

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Abstract

The invention discloses a manufacturing method of a high-strength aluminum alloy strip for a supporting middle plate of a mobile phone. The manufacturing method comprises the following steps: (1) preparing an aluminum alloy melt; (2) casting; (3) carrying out hot rolling, cold rolling and finish rolling. Components and microstructure of a cast ingot are controlled by virtue of a casting process, and by virtue of the optimized hot rolling, cold rolling and intermediate annealing process, the high-strength aluminum alloy strip for the supporting middle plate of the mobile phone is relatively high in strength and deformed microstructure and relatively high in tensile strength, yield strength and elongation percentage; the tensile strength is more than or equal to 380MPa, the yield strength is more than or equal to 330MPa, and the elongation percentage is more than or equal to 10 percent. By adopting the method, the elongation percentage of the aluminum alloy strip is increased, the punch forming performance is good, the process is simple and easy to realize, the punch yield is high, and no special special equipment is needed.

Description

technical field [0001] The invention relates to the technology in the field of metal strips, in particular to a method for manufacturing high-strength aluminum alloy strips that can be used for supporting medium plates of mobile phones. Background technique [0002] At present, stainless steel plates are mainly used for supporting plates on mobile phones. However, stainless steel plates are not only heavy, but also magnetic, which affects the use of mobile phones. At present, there is a way to use aluminum plates. However, if the traditional 5-series aluminum plates have high strength, the elongation rate is low, and if the elongation rate is high, the strength is low. It is difficult to balance strength and elongation rate, so it cannot meet the stamping and stretching. Contents of the invention [0003] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a manufacturing method for high-strength aluminum all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/08C22F1/047
Inventor 张东风
Owner 重庆市灿煜金属制品有限公司
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