CN111088495A - Metal part processing method, metal part, shell and metal composite - Google Patents
Metal part processing method, metal part, shell and metal composite Download PDFInfo
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- CN111088495A CN111088495A CN201911211481.XA CN201911211481A CN111088495A CN 111088495 A CN111088495 A CN 111088495A CN 201911211481 A CN201911211481 A CN 201911211481A CN 111088495 A CN111088495 A CN 111088495A
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- metal
- alkaline solution
- treatment method
- metal part
- processing method
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
A method of treating a metal article comprising a metal matrix, the method comprising: placing the metal matrix in an alkaline solution, the metal matrix comprising a first metal and a second metal, the second metal comprising aluminum; and heating the alkaline solution to form pores on the surface of the second metal, wherein the pores are not formed on the surface of the first metal. A metal part, a shell and a metal composite body are also provided.
Description
Technical Field
The invention relates to a metal piece processing method, a metal piece, a shell and a metal composite body.
Background
The surface of the aluminum is usually formed with micropores through electrochemical oxidation, and the plastic is injected into the micropores, so that the bonding force between the plastic and the aluminum can be enhanced. However, when the metal part comprises a plurality of metals, such as aluminum and iron, due to different electrochemical activities, the electrochemical reaction will only oxidize iron, and micropores cannot be formed on the surface of aluminum, and galvanic cell reaction is easily formed at the interface of the two metals, so that local excessive corrosion is caused. And other corrosion modes are adopted to carry out additional shielding protection on the metal which does not need to be corroded, and the shielding is removed after the reaction is finished, so that the process is complicated. .
Disclosure of Invention
In view of the above, it is desirable to provide a metal processing method, a metal, a housing and a metal composite to solve the above problems.
A method of treating a metal article comprising a metal matrix, the method comprising: :
placing the metal matrix in an alkaline solution, the metal matrix comprising a first metal and a second metal, the second metal comprising aluminum; and
and heating the alkaline solution to form pores on the surface of the second metal, wherein the pores are not formed on the surface of the first metal.
Further, the alkaline solution comprises an alkaline substance comprising one or more of ammonia, sodium hydroxide, sodium carbonate, or sodium bicarbonate.
Further, the mass concentration range of the alkaline substance in the alkaline solution is 0.5-20%.
Further, the pH value range of the alkaline solution is 7-10.
Further, the heating temperature range is 60 ℃ to 100 ℃.
Further, the heating time ranges from 1 minute to 40 minutes.
Further, the material of the first metal includes stainless steel or titanium.
A metal part is obtained by the treatment method.
A shell of an electronic device comprises the metal piece.
A metal composite part comprises a metal part and a plastic part, wherein the metal part is obtained by processing through the processing method, and the plastic part is arranged in a hole in the surface of the second metal.
Compared with the prior art, the shell is connected with the first sealing part through the structure of the optimally designed sealing structure at the connecting part, and the first sealing part comprises the first surrounding part and the second surrounding part which are vertically arranged, so that the waterproof and dustproof effects of structural strength are improved.
Drawings
Fig. 1 is a flowchart of a method for processing a metal material according to a first embodiment of the present invention.
Fig. 2a and 2b are scanning electron microscope images of the metal piece processed by the metal piece processing method according to the first embodiment.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. In the following embodiments, features of the embodiments may be combined with each other without conflict.
Referring to fig. 1 to fig. 2b, in one embodiment of the present invention, a method for processing a metal part, the metal part including a metal substrate, includes:
s101: placing the metal matrix in an alkaline solution, the metal matrix comprising a first metal and a second metal, the second metal comprising aluminum.
Specifically, the second metal is selected from an aluminum alloy, pure aluminum, or an aluminum composite.
In at least one embodiment, the alkaline solution comprises an alkaline substance comprising one or more of ammonia, sodium hydroxide, sodium carbonate, or sodium bicarbonate.
In at least one embodiment, the mass concentration of the alkaline substance in the alkaline solution is in a range of 0.5% to 20%.
In at least one embodiment, the pH value of the alkaline solution is 7-10.
In at least one embodiment, the pH value of the alkaline solution is 7-9.
In at least one embodiment, the pH value of the alkaline solution is 8-8.5.
In at least one embodiment, the material of the first metal comprises stainless steel or titanium.
The first metal and the second metal are combined by die casting, welding, rolling, and the like.
S102: and heating the alkaline solution to form pores on the surface of the second metal, wherein the pores are not formed on the surface of the first metal. It should be noted that, due to the processing requirement, only the second metal surface is required to form the hole, and the first metal surface does not form the hole, and the conventional etching method cannot be simply and easily implemented.
In at least one embodiment, the heating temperature ranges from 60 ℃ to 100 ℃.
In at least one embodiment, the heating temperature ranges from 75 ℃ to 95 ℃.
In at least one embodiment, the heating temperature ranges from 80 ℃ to 90 ℃.
In at least one embodiment, the heating time ranges from 1 minute to 40 minutes.
In at least one embodiment, the heating time ranges from 10 minutes to 20 minutes.
In at least one embodiment, the heating time ranges from 12 minutes to 16 minutes.
In at least one embodiment, the processing method further comprises: and carrying out oil removal treatment on the metal piece.
The degreasing treatment may be by water washing, ultrasonic cleaning, alkali washing, or the like.
Referring to fig. 2a and 2b, fig. 2a is a scanning electron microscope image of the metal piece heated for 10 minutes in the processing method according to the first embodiment, and fig. 2b is a scanning electron microscope image of the metal piece heated for 20 minutes. In an embodiment of the present invention, a metal material is obtained by processing the metal material according to the first embodiment.
The metal piece comprises a first metal and a second metal. The material of the first metal comprises stainless steel or titanium. The second metal comprises aluminum element. The first metal and the second metal are combined by die casting, welding, rolling, and the like. The second metal surface is formed porous.
In a third embodiment of the present invention, a housing is provided, which includes the metal member of the second embodiment.
The fourth embodiment of the present invention provides a metal composite. The metal composite part comprises a metal part and a plastic part. The metal part is obtained by processing the metal part according to the first embodiment, and the plastic part is disposed in the hole on the surface of the second metal.
The plastic part can be combined with the metal part in the modes of injection molding, pressing or bonding and the like.
The processing method of the metal piece enables the surface of the aluminum alloy to rapidly generate an evenly covered aluminum hydroxide nano structure through hydration reaction, and simultaneously, the hydration reaction is catalyzed and accelerated by alkaline substances. The treatment method has the advantages of quick operation time and simple and convenient operation, and can be completed only by simple water bath heating. The metal piece processing method has lower requirements on the first metal component.
Furthermore, an alkaline solution with the pH value ranging from 7 to 10 is adopted, the corrosivity is low, the problem of extension of galvanic corrosion and the like does not exist between double metals, and complicated protection processes such as ink shielding or film pasting can be avoided. The alkaline solution has low consumption of alkaline substances. The alkaline solution is relatively low in corrosivity and relatively environment-friendly.
It is understood that various other changes and modifications may be made by those skilled in the art based on the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the claims of the present invention.
Claims (10)
1. A method of treating a metal article comprising a metal matrix, the method comprising:
placing the metal matrix in an alkaline solution, the metal matrix comprising a first metal and a second metal, the second metal comprising aluminum; and
and heating the alkaline solution to form pores on the surface of the second metal, wherein the pores are not formed on the surface of the first metal.
2. The treatment method of claim 1, wherein the alkaline solution comprises an alkaline material comprising one or more of ammonia, sodium hydroxide, sodium carbonate, or sodium bicarbonate.
3. The treatment method according to claim 2, wherein the concentration of the alkaline substance in the alkaline solution is in the range of 0.5 to 20% by mass.
4. The treatment method according to claim 1, wherein the alkaline solution has a pH value in the range of 7 to 10.
5. The process of claim 1, wherein the heating temperature is in the range of 60 ℃ to 100 ℃.
6. The treatment method according to claim 1, wherein the heating time is in the range of 1 minute to 40 minutes.
7. The process of claim 1 wherein the material of the first metal comprises stainless steel or titanium.
8. A metal part treated by the treatment method according to any one of claims 1 to 7.
9. A housing for an electronic device, the housing comprising the metallic article of claim 8.
10. A metal composite part, comprising a metal part and a plastic part, wherein the metal part is obtained by the treatment method according to any one of claims 1 to 7, and the plastic part is arranged in a hole on the surface of the second metal part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911211481.XA CN111088495A (en) | 2019-12-02 | 2019-12-02 | Metal part processing method, metal part, shell and metal composite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911211481.XA CN111088495A (en) | 2019-12-02 | 2019-12-02 | Metal part processing method, metal part, shell and metal composite |
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| CN111088495A true CN111088495A (en) | 2020-05-01 |
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| CN201911211481.XA Pending CN111088495A (en) | 2019-12-02 | 2019-12-02 | Metal part processing method, metal part, shell and metal composite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287658A (en) * | 2022-08-09 | 2022-11-04 | 西安雅西复合材料有限公司 | Etching method and clamping device for aluminum honeycomb core |
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Address after: 518109 Foxconn H5 plant 101, No. 2, Donghuan 2nd Road, Fukang community, Longhua street, Longhua District, Shenzhen, Guangdong Province; plant 5, building C09, 4th floor, building C07, 2nd floor, building C08, 3rd floor, 4th floor, building C04, zone B, Foxconn Hongguan science and Technology Park, Fucheng Dasan community, Guanlan street, Guangdong Province Applicant after: Fulian Yuzhan Technology (Shenzhen) Co.,Ltd. Address before: 518109 Guangzhou Guanlan Foxconn Hongguan Science Park B workshop 5 C09 buildings 4 floors, C07 buildings 2 floors, C08 buildings 3 floors 4 floors, C04 buildings 1 floors Applicant before: SHENZHENSHI YUZHAN PRECISION TECHNOLOGY Co.,Ltd. |
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Application publication date: 20200501 |