Manufacturing method of mobile phone middle frame

A mobile phone middle frame and frame technology, which is applied to branch office equipment, telephone structure, anodic oxidation, etc., can solve the problem of only corroding aluminum alloy and not corroding stainless steel, so as to reduce the processing cycle and processing cost, reduce processing volume, process The effect of high yield

Inactive Publication Date: 2017-02-22
GUANGDONG JANUS SMART GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing the middle frame of a mobile phone, so as to avoid the problem of only corroding aluminum alloy and not stainless steel due to the difference in metal activity during the process

Method used

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  • Manufacturing method of mobile phone middle frame
  • Manufacturing method of mobile phone middle frame
  • Manufacturing method of mobile phone middle frame

Examples

Experimental program
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preparation example Construction

[0030] refer to Figure 1 to Figure 4 , in one embodiment, a method for preparing a middle frame of a mobile phone, comprising the following steps:

[0031] Step S1, preparing the stainless steel frame 1;

[0032] Step S2, put the stainless steel frame 1 into the die-casting mold, then add the smelted aluminum alloy liquid into the die-casting mold, and then die-cast and form the aluminum alloy middle plate 2, the aluminum alloy middle plate 2 and the stainless steel frame 1 Integral molding of aluminum alloy stainless steel middle frame;

[0033] Step S3, first cover the aluminum alloy middle plate 2 with a protective glue resistant to acid and alkali corrosion, and then put the aluminum alloy stainless steel middle frame into the microporous treatment solution to corrode to form micropores. Remove after this step;

[0034] Step S4, forming a plastic structural part 3 on the aluminum alloy stainless steel middle frame by injection molding;

[0035] Step S5, post-processin...

Embodiment 1

[0053] Equipment and materials: ADC12 aluminum alloy gold ingot, die-casting mold, die-casting machine, high cycle furnace, 304 stainless steel plate, degreasing powder 402, Boen 10026 protective glue, sulfuric acid solution, hydrochloric acid solution, sodium chloride solution, oleic acid base Hydroxyethyl imidazoline, sodium sulfate, deionized water, 30% glass fiber modified PBT, injection molding machine, CNC engraving machine.

[0054] Die-cast aluminum plate

[0055] Put the ADC12 aluminum alloy gold ingot into the high-cycle furnace to melt the aluminum liquid mixture, then put the CNC-processed 304 stainless steel plate into the die-casting mold, and then pour the melted aluminum alloy mixture into the die-casting machine for feeding At the mouth, start to die-cast the aluminum alloy middle plate, keep the mold pressure for 10-20s, wait until the mold temperature cools to room temperature, take out the casting to get the stainless steel aluminum alloy middle frame produ...

Embodiment 2

[0061] Equipment and materials: ADC12 aluminum alloy gold ingot, die-casting mold, die-casting machine, high cycle furnace, 316 stainless steel plate, degreasing powder 402, Boen 10026 protective glue, sulfuric acid solution, hydrochloric acid solution, zinc chloride solution, 2-mercapto -5-methoxybenzimidazole, sodium sulfate, deionized water, 30% glass fiber modified PBT, injection molding machine, CNC engraving machine.

[0062] Die-cast aluminum plate

[0063] Put the ADC12 aluminum alloy gold ingot into the high-cycle furnace to melt the aluminum liquid mixture, then put the CNC-processed 316 stainless steel plate into the die-casting mold, and then pour the melted aluminum alloy mixture into the die-casting machine for feeding At the mouth, start to die-cast the aluminum alloy middle plate, keep the mold pressure for 10-20s, wait until the mold temperature cools to room temperature, take out the casting to get the stainless steel aluminum alloy middle frame product.

[...

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Abstract

The invention discloses a manufacturing method of a mobile phone middle frame. The manufacturing method comprises the following steps: S1, preparing a stainless steel rim; S2, putting the stainless steel rim into a pressure casting die, then adding smelted aluminum alloy liquid into the pressure casting die for pressure casting to form an aluminum alloy middle plate, and integrally forming an aluminum alloy-stainless steel middle frame from the aluminum alloy middle plate and the stainless steel rim; S3, covering the aluminum alloy middle plate with protective rubber capable of resisting corrosion of acidic liquid and alkaline liquid, putting the aluminum alloy-stainless steel middle frame into microhole treatment liquid for corrosion to form micro holes, and then removing the protective rubber; S4, forming a plastic structural member on the aluminum alloy-stainless steel middle frame through injection molding; and S5, performing post machining treatment on the aluminum alloy middle frame. The manufacturing method can avoid the problem that only the aluminum alloy is corroded, but the stainless steel cannot be corroded due to different activities of metals in the manufacturing process. According to the method, the machining amount of the whole structure of the middle frame can be reduced, the appearance effect is good, and the yield is high.

Description

technical field [0001] The invention relates to a method for preparing a middle frame of a mobile phone. Background technique [0002] With the diversified development of 3C electronic products, traditional plastic mobile phones have been fully replaced by aluminum alloy metal mobile phones. Because metal has good thermal conductivity and mechanical strength, using metal to build the frame of the mobile phone has advantages over plastic in terms of body strength and thermal conductivity, and can increase the texture and improve the quality of the mobile phone. However, the aluminum alloy material itself also has its shortcomings. For example, the hardness of aluminum alloy is low, and the degree of corrosion resistance is not high. The difficulty is high, and the processing process of the fuselage is long, so the processing cost is very high, resulting in a high price of the mobile phone. Although the middle frame can be made by aluminum alloy die-casting and forging metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/16B22D17/00B22D19/16B29C45/14H04M1/02
CPCB22D17/00B22D19/16B29C45/14B29L2031/3437C25D11/08C25D11/16H04M1/026
Inventor 韩静王长明谢守德
Owner GUANGDONG JANUS SMART GRP CO LTD
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