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High-strength mobile phone medium plate aluminum alloy strip and preparing method thereof

A technology of aluminum alloy strip and manufacturing method, which is applied in metal rolling and other directions, can solve the problems of dredging to the outside, and achieve the effects of good forming performance, flat shape, and increased elongation

Inactive Publication Date: 2017-12-15
CHINALCO RUIMIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires the urgent need to develop a new material that has excellent thermal conductivity to avoid affecting the user experience and the life of the mobile phone due to the inability to channel the internal heat to the outside during the use of the mobile phone.

Method used

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  • High-strength mobile phone medium plate aluminum alloy strip and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] The composition and mass fraction percentage of a high-strength aluminum alloy strip for mobile phone plates are: Fe 0.18%, Si 0.05%, Cu 0.02%, Mn 0.22%, Mg 5.76%, Cr 0.03%, Zn 0.01%, Ti 0.01%, others: 0.05%, the rest is Al, and the sum of the content ratios of each component is 100%.

[0035] The manufacturing method of the aluminum alloy strip for the high-strength mobile phone middle plate is as follows:

[0036] 1) The raw materials of pure aluminum ingots, aluminum intermediate alloy ingots, magnesium ingots, and manganese agent prepared according to the above weight ratio are added to the melting furnace, and melted, refined, and slag-removed at a temperature of 720°C to obtain molten aluminum, and then At a temperature of 730°C, add Al-5Ti-0.2B grain refiner to the molten aluminum and use argon gas with a purity ≥ 99.999% for refining, then use a low-level semi-continuous casting method to place the refined aluminum solution for 0.5 Cast into the aluminum alloy ...

Embodiment 2

[0047] The composition and mass fraction of a high-strength aluminum alloy strip for mobile phone panels are: Fe 0.15%, Si 0.08%, Cu 0.10%, Mn 0.20%, Mg 5.8%, Cr 0.10%, Zn 0.02%, Ti 0.015%, others: 0.05%, the rest is Al, and the sum of the content ratios of each component is 100%.

[0048] The manufacturing method of the aluminum alloy strip for the high-strength mobile phone middle plate is as follows:

[0049] 1) The raw materials such as pure aluminum ingots, aluminum intermediate alloy ingots, magnesium ingots, and manganese agent prepared according to the above weight ratio are added to the melting furnace, melted, refined, and slag-removed at a temperature of 750°C to obtain molten aluminum, and then At a temperature of 690°C, add Al-5Ti-0.2B grain refiner to the molten aluminum and use argon gas with a purity ≥99.999% for refining, then use a low-level semi-continuous casting method to put the refined aluminum solution still After 1 hour, it is cast into an aluminum al...

Embodiment 3

[0060] The composition and mass fraction of a high-strength aluminum alloy strip for mobile phones are: Fe 0.20%, Si 0.10%, Cu 0.05%, Mn 0.12%, Mg 6.0%, Cr 0.00%, Zn 0.015%, Ti 0.02%, others: 0.05%, the rest is Al, and the sum of the content ratios of each component is 100%.

[0061] The manufacturing method of the aluminum alloy strip for the high-strength mobile phone middle plate is as follows:

[0062] 1) The pure aluminum ingots, aluminum intermediate alloy ingots, magnesium ingots, and manganese agent prepared according to the above weight ratio are added to the melting furnace, and melted, refined, and slag-removed at a temperature of 735°C to obtain molten aluminum, and then At a temperature of 710°C, add Al-5Ti-0.2B grain refiner to the molten aluminum and use argon gas with a purity ≥ 99.999% for refining, then use a low-level semi-continuous casting method to put the refined aluminum solution still After 1 hour, it is cast into an aluminum alloy flat ingot with spe...

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Abstract

The invention discloses a high-strength aluminum alloy strip for mobile phone mid-plate and a manufacturing method thereof. The components are calculated by mass fraction: Si 0.05-0.10%, Fe 0.05-0.20%, Cu 0.01-0.10%, Mn 0.12-0.22 %, Mg 5.5‑6.0%, Cr 0.01‑0.10%, Zn 0.01‑0.02%, Ti 0.01‑0.03%, and the balance is Al and unavoidable impurities. The production method is to use aluminum ingots, aluminum intermediate alloy ingots, magnesium ingots, and manganese agents as raw materials to obtain aluminum alloy strips for mobile phone mid-plates through melting, casting, soaking, hot rolling, cold rolling, annealing, cleaning and straightening. The aluminum alloy strip for the middle plate of the mobile phone obtained according to the manufacturing method of the present invention has good surface quality, smooth plate shape, high strength, good formability, and high thermal conductivity; the aluminum alloy strip for the middle plate of the mobile phone produced by the present invention Alloy strip, the yield strength reaches 280~330MPa, the tensile strength reaches 370‑400MPa, and the elongation is ≥10%.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metals, and in particular relates to an aluminum alloy strip for a high-strength mobile phone middle plate and a manufacturing method thereof. Background technique [0002] The mobile phone mid-board refers to the plate base used to produce high-end smartphones. It is mainly used to support the internal circuit board of the mobile phone and dissipate the heat generated by the internal chips and circuits of the mobile phone in time. Its thickness is generally thin, about 0.5mm. The performance of the middle board of the mobile phone requires the material to have high strength to ensure the strength required for it to support the circuit board; the material is required to have excellent thermal conductivity so that the internal temperature can be transferred to the edge in time and released in time; The material is required to have excellent forming performance, so as to facilitate stamping and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047B21B1/22B21D3/00
CPCC22C21/08B21B1/22B21D3/00C22C1/026C22C1/03C22F1/047
Inventor 刘华春黄瑞银徐始祥吴建新江钟宇
Owner CHINALCO RUIMIN
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