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A kind of preparation method of aluminum alloy base material for electronic product casing

A technology of aluminum alloy base and electronic products, which is applied in the field of preparation of aluminum alloy base materials, can solve problems such as material grain, achieve good effect, stable performance, and eliminate color difference

Active Publication Date: 2017-11-03
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

[0007] The purpose of the present invention is to solve the problems of aluminum alloy appearance parts such as material grains after anodic oxidation, uniform performance, stable large-scale production and supply, etc.

Method used

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  • A kind of preparation method of aluminum alloy base material for electronic product casing
  • A kind of preparation method of aluminum alloy base material for electronic product casing

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Experimental program
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Effect test

Embodiment 1

[0029] A method for preparing an aluminum alloy base material for an electronic product casing. The preparation steps are: put pure aluminum, pure zinc, AlCu50 alloy and AlZr5 alloy into a melting furnace for melting at a melting temperature of 720-770°C, then put pure magnesium into it, and put it into When the temperature is controlled at 750-770°C, it is then transferred to a holding furnace at 710-730°C for heat preservation, and refined by introducing chlorine and argon for 1 hour, standing for 1 hour, and then passing chlorine and argon for refining for 1 hour, standing for 1 hour, and turning to The on-line degassing and slag removal device is installed. During the on-line degassing, the volume ratio of chlorine gas is 2-5%, and the grain refiner is added on-line. Finally, a 40-mesh ceramic filter plate is used to remove the slag, and an ingot with a uniform structure is cast. The casting process described above is a semi-continuous casting method.

[0030] The raw mate...

Embodiment 2

[0039] A method for preparing an aluminum alloy base material for an electronic product casing. The preparation steps are: putting pure aluminum, pure zinc, AlCu50 alloy and AlZr5 alloy into a melting furnace for melting at a melting temperature of 720-770°C, and then putting the alloy and pure magnesium into , the temperature is controlled at 750-770°C when put in, and then transferred to the holding furnace at 710-730°C for heat preservation, and refined with chlorine and argon for 2 hours, and left for 2 hours, then refined with chlorine and argon for 2 hours, and left for 2 hours , transferred to the online degassing and slag removal device, when the online degassing, the volume ratio of chlorine gas is 2-5%, the grain refiner is added online, and finally the slag is removed by using a 50-mesh ceramic filter plate to cast an ingot with uniform structure , the casting process is a semi-continuous casting method.

[0040] The raw materials are 99.85% aluminum ingots, 99.92% ...

Embodiment 3

[0049] Cold rolling to a thickness of 2.5mm is annealed in the continuous annealing furnace and the chamber annealing furnace respectively in the air cushion furnace to form O state. The product properties are shown in Table 1. The coils annealed by air-cushion continuous annealing in the present invention have relatively small yield strength and high plasticity, which is beneficial to its subsequent deep drawing processing; The material has better comprehensive performance and better surface quality.

[0050] Table 1 Properties of products annealed into O state in hovering furnace continuous annealing furnace and chamber annealing furnace

[0051] Annealing method

[0052] Note: R p0.2 is the yield strength, R m is the tensile strength, A 50 is the elongation rate.

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Abstract

A preparing method of an aluminum alloy base material for an electronic product shell comprises the steps that burdening is carried out according to the weight ratio of various alloy components, pure aluminum, pure zinc, AlCu50 alloy and AlZr5 alloy are put into a smelting furnace to be smelted, and the smelting temperature is 720-770 DEG C; then pure magnesium is input, and the temperature is controlled between 750 DEG C and 770 DEG C during inputting; the mixture is transferred into a holding furnace at the temperature of 710-730 DEG C to be subjected to heat preservation, the holding furnace is inflated with chlorine and argon for refining for 1-2 h, standing is conducted for 1-2 h, the holding furnace is inflated with chlorine and argon again for refining for 1-2 h, and standing is conducted for 1-2 h; the mixture is transferred into an online degassing and deslagging device, during online degassing, the volume proportion of chlorine is 2-5%, and a grain refiner is added online; and finally, filtering and deslagging are conducted, a cast ingot with the uniform structure is cast, and after the cast ingot is subjected to homogenization, preheating and rolling and reaches the target thickness, a product is obtained through annealing via a continuous annealing device. According to the preparing method, the actual production situation is combined, aluminum alloy good in color and luster, low in black line reject ratio and free of bank marks after being subjected to anodic oxidation is developed, and sheet strips uniform in performance can be stably produced on a large scale.

Description

technical field [0001] The invention relates to a method for preparing an aluminum alloy base material, in particular to a method for preparing an aluminum alloy base material used for electronic product shells. Background technique [0002] With the rapid development of 4G, 5G communication networks and the Internet, the popularity of high-end electronic products such as smart phones and TVs is increasing day by day, in order to meet consumers' demand and application for high-end electronic aluminum alloy appearance products. my country is a big country in the production and consumption of electronic products. With the changes in people's living standards and aesthetics, electronic products are gradually becoming smaller, thinner and smarter. Clean, environmentally friendly and metallic aluminum alloys are gradually recognized by consumers. [0003] At present, aluminum alloys commonly used in the market are often extruded into base materials or die-casted, and then mechani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C1/06C22C21/08C22F1/047
CPCC22C1/026C22C1/06C22C21/08C22F1/047
Inventor 任月路赖仕祯徐燕萍陈仁桂赵解扬
Owner 广西南南铝加工有限公司