CN116967424A - Middle frame preparation method - Google Patents
Middle frame preparation method Download PDFInfo
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- CN116967424A CN116967424A CN202310901700.7A CN202310901700A CN116967424A CN 116967424 A CN116967424 A CN 116967424A CN 202310901700 A CN202310901700 A CN 202310901700A CN 116967424 A CN116967424 A CN 116967424A
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- middle plate
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 133
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000004512 die casting Methods 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000003754 machining Methods 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 238000004381 surface treatment Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000004814 ceramic processing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000010977 jade Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012993 chemical processing Methods 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
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- 238000010892 electric spark Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
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- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Products (AREA)
Abstract
The embodiment of the invention provides a method for preparing a middle frame, which comprises the following steps: taking: taking ceramic powder for producing ceramics; and (3) forming: forming the ceramic powder into a required shape to obtain a ceramic blank, wherein a first fastening structure is formed on the ceramic blank; sintering: sintering the ceramic blank to obtain a ceramic frame; heating: heating the ceramic frame to make the first expansion amount of the ceramic frame equal to the second expansion amount of the metal middle plate in a molten state or make the difference value between the first expansion amount and the second expansion amount within a preset range; and (3) die casting: and the metal middle plate is die-cast on the basis of the ceramic frame by adopting a die-casting process, and a second fastening structure which is in fit connection with the first fastening structure is formed on the metal middle plate. The preparation method of the middle frame greatly reduces the generation of internal stress, improves the connection strength of the ceramic frame and the metal middle plate and the waterproof performance of the connection part, and integrally improves the product quality.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a middle frame preparation method.
Background
At present, the middle frames of high-end mobile phones and tablet personal computers are usually manufactured by connecting a metal frame and a metal middle plate. The middle frame of the mainstream mobile phone is mostly made of aluminum alloy materials, and the high-end flagship model is mostly made of stainless steel materials. In order to realize the transmission of data signals, engineers make antenna isolation areas on the metal middle frame in an in-mold injection molding mode; however, in the 5G communication, millimeter waves are utilized to perform high-frequency transmission, which is extremely sensitive to signal shielding performance, transmission directivity and the like of the mobile phone shell, and the 5G antenna on the metal middle frame is likely to bring greater technical difficulty, and it is expected that more than 10 plastic partition strips are needed to realize the antenna layout. Thus, the function design of the mobile phone is affected, and the visual effect of the appearance is also affected.
For the reasons, a middle frame structure with ceramic as a frame starts to appear in the market, and the appearance surface of the ceramic as the middle frame has a texture of being warm and moist like jade, hard and wear-resistant; meanwhile, the CMF appearance effects such as color, matte, enamel, colorful and the like can be realized through the ceramic powder, and the durability is good. However, when the metal middle plate is connected to the ceramic frame through the die casting process, the thermal expansion coefficients of the ceramic and the metal are often greatly different, and the volume change of the metal middle plate is larger than that of the ceramic frame during cooling, so that larger internal stress can be generated at the joint surface, and the overall connection strength is adversely affected.
Disclosure of Invention
The embodiment of the invention provides a middle frame preparation method, which is used for solving the problems that in the prior art, the ceramic frame and the metal middle plate are easy to generate larger internal stress at the joint surface of the ceramic frame and the metal middle plate due to larger difference of thermal expansion coefficients, so that the overall connection strength is adversely affected.
In the embodiment of the invention, the middle frame preparation method comprises the following steps:
taking: taking ceramic powder for producing ceramics;
and (3) forming: forming the ceramic powder into a required shape to obtain a ceramic blank, wherein a first fastening structure is formed on the ceramic blank;
sintering: sintering the ceramic blank to obtain a ceramic frame;
heating: heating the ceramic frame to make the first expansion amount of the ceramic frame equal to the second expansion amount of the metal middle plate in a molten state or make the difference value between the first expansion amount and the second expansion amount within a preset range;
and (3) die casting: and the metal middle plate is die-cast on the basis of the ceramic frame by adopting a die-casting process, and a second fastening structure which is in fit connection with the first fastening structure is formed on the metal middle plate.
As a further alternative to the method for preparing a middle frame, the molding process includes:
placing ceramic powder containing a binder component into an injection molding machine, heating and converting into a viscous melt, then injecting into a mold, cooling, demolding and taking out to obtain a ceramic blank, forming a first fastening structure on the ceramic blank, and then removing the binder component in the ceramic blank by a physical or chemical method to obtain the ceramic blank.
As a further alternative of the method for preparing a middle frame, the method for preparing a middle frame further comprises the steps of:
blank processing: and processing the ceramic blank and then sintering.
As a further alternative to the method of manufacturing a middle frame, machining the ceramic blank includes: cutting the ceramic blank to enable the size of the ceramic blank to meet the requirements.
As a further alternative of the method for preparing a middle frame, the method for preparing a middle frame further comprises the steps of:
ceramic processing: and heating the ceramic frame after processing the ceramic frame.
As a further alternative of the method for manufacturing a middle frame, the method for processing the ceramic frame includes at least one of abrasive processing, plastic processing, chemical processing, electric processing, composite processing, and optical processing.
As a further alternative of the method for manufacturing a middle frame, the processing the ceramic frame includes: and coating a metal layer on the surface of the first fastening structure through a spraying process.
As a further alternative of the method for preparing a middle frame, the method for preparing a middle frame further comprises the steps of:
surface treatment of a middle plate: and carrying out surface treatment on the metal middle plate so that the surface performance and/or the surface finish of the metal middle plate meet the requirements.
As a further alternative of the method for manufacturing a middle frame, the first fastening structure is a tenon, and the second fastening structure is a mortise.
As a further alternative to the mid-frame preparation method, the absolute value of the difference between the first expansion amount and the second expansion amount does not exceed 20% of the second expansion amount.
The implementation of the embodiment of the invention has the following beneficial effects:
according to the middle frame preparation method, before the metal middle plate is die-cast, the ceramic frame is heated, so that the first expansion amount of the ceramic frame is equal to the second expansion amount of the metal middle plate in a molten state, or the difference value between the first expansion amount and the second expansion amount is within a preset range, so that the deformation amount of the metal middle plate and the deformation amount of the ceramic frame in the process of cooling the metal middle plate to room temperature are the same, the internal stress is greatly reduced, the connection strength of the ceramic frame and the metal middle plate is improved, gaps at the connection position of the ceramic frame and the metal middle plate are avoided, the waterproof performance of the connection position of the ceramic frame and the metal middle plate is improved, and the product quality is integrally improved.
The middle frame obtained by the frame preparation method uses the ceramic as a frame material, so that the frame has a texture of being warm and moist like jade, hard and wear-resistant, the frame has good durability, the ceramic can not shield signals, the design and arrangement of the antenna are convenient, the stability of signal transmission is improved, and the use experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
FIG. 1 is a flow chart of a method for preparing a middle frame according to an embodiment of the invention;
FIG. 2 is a flow chart of a method for preparing a middle frame according to another embodiment of the present invention;
FIG. 3 is a flow chart of a method for preparing a middle frame according to another embodiment of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many other different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed 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. The terms "vertical," "horizontal," "left," "right," and the like are used herein 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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The embodiment of the invention provides a middle frame preparation method, which is used for solving the problems that in the prior art, the ceramic frame and the metal middle plate are easy to generate larger internal stress at the joint surface of the ceramic frame and the metal middle plate due to larger difference of thermal expansion coefficients, so that the overall connection strength is adversely affected.
In the embodiment of the invention, please refer to fig. 1, the preparation method of the middle frame includes four steps of material taking, forming, sintering, heating and die casting.
Taking: ceramic powder for producing ceramics is taken, and in this step, the ceramic powder is a mixture of various raw material powders such as zirconia powder, surfactant, binder, and the like.
And (3) forming: forming ceramic powder into a required shape to obtain a ceramic blank, wherein a first fastening structure is formed on the ceramic blank; in this step, the ceramic blank may be provided with the desired shape, in particular by means of existing ceramic production schemes such as pressing, injection and extrusion.
In a more general case, the ceramic blank is generally shaped into a frame with a rectangular outline, so as to be suitable for equipment with rectangular appearance, such as a square dial plate of a mobile phone or an electronic watch, however, along with the change of a use scene and requirements, the ceramic blank can also be processed into a frame with other shapes, such as a round, an oval, a triangle, a polygon, a drop shape, and the like, with the outline of the frame; the frame body can be of a closed structure or an unsealed structure, namely, the frame body is provided with a broken notch, the notch can be kept open under the condition of meeting the subsequent use requirement, of course, the blocking piece can also be arranged at the notch, and the blocking piece is connected with the end parts of the frame body at two sides of the notch in a bonding, clamping or injection molding mode and the like, so that the notch is closed.
It should be added that the ceramic blank produced is not narrowly directed to a complete frame (to a completely enclosed structure), but to a part of a complete frame, for example to an edge of a complete frame, or to an edge of a complete frame together with rounded corners on one or both sides thereof, or to a combination of two to three edges of a frame, etc., which can be regarded as an extension of the concept of a frame with a notch as described above, such a structure being able to be joined in a subsequent step to form a complete frame during production. For example, the frame produced by the method is actually four independent sides of a complete frame body, and the four sides are respectively fixed on the middle plate, so that the complete frame body is formed; for another example, the frame produced by the method is actually four independent sides of a complete frame, fastening structures capable of being matched with each other are formed on the four sides, and a complete frame structure is formed by connection among the fastening structures.
Sintering: and sintering the ceramic blank to obtain the ceramic frame.
Heating: and heating the ceramic frame to ensure that the first expansion amount of the ceramic frame is equal to the second expansion amount of the metal middle plate in a molten state, or to ensure that the difference value between the first expansion amount and the second expansion amount is within a preset range.
In this step, the value of the first expansion amount is related to the kind of the metal material used in the die casting process, specifically, since the size of the first fastening structure on the ceramic frame is determined, and the second fastening structure needs to be cooperatively connected with the first fastening structure, the size of the second fastening structure at normal temperature is also determined, whereas in the die casting process, the metal middle plate will be in a molten state, and the volume is expanded, and the purpose of heating the ceramic frame is to make the first expansion amount of the ceramic frame equal to or close to the second expansion amount of the metal middle plate, in other words, the shrinkage amounts of the cooled ceramic frame and the metal middle plate are also equal to or close to each other, so that the generation of internal stress is effectively reduced, and the specific difference range between the first expansion amount and the second expansion amount can be determined by a person skilled in the art according to the specific quality standards of different batches of products, which are not excessively limited.
For the temperature value of the ceramic frame which needs to be specifically raised, taking the example that the first expansion amount of the ceramic frame is equal to the second expansion amount of the metal middle plate, and assuming that the thermal expansion coefficient of the ceramic frame is A, the thermal expansion coefficient of the metal middle plate made of a specific material is B, the room temperature is C, the temperature of the ceramic frame after being raised is X, and the temperature of the metal material in a molten state is Y, the following formula can be obtained:
(X-C)×A＝(Y-C)×B
by calculating the value of X, the degree to which the ceramic frame needs to be heated can be known.
If the range of the percentage difference between the first expansion of the ceramic frame and the second expansion of the metal middle plate is defined, and the number D (which may be a positive value or a negative value) is used to represent the percentage, the formula is modified as follows:
(X-C)×A＝(Y-C)×B×(100％+D)
the X value is calculated to know how much degree the ceramic frame needs to be heated.
It should be noted that if the temperature of the ceramic rim exceeds the melting point of the ceramic rim when the first and second amounts of expansion are equal, the first and second amounts of expansion should not be equal to avoid damaging the structure of the ceramic rim.
And (3) die casting: and a metal middle plate is die-cast on the basis of the ceramic frame by adopting a die-casting process, and a second fastening structure which is in fit connection with the first fastening structure is formed on the metal middle plate.
According to the middle frame preparation method, before the metal middle plate is die-cast, the ceramic frame is heated, so that the first expansion amount of the ceramic frame is equal to the second expansion amount of the metal middle plate in a molten state, or the difference value between the first expansion amount and the second expansion amount is within a preset range, so that the deformation amount of the metal middle plate and the deformation amount of the ceramic frame in the process of cooling to room temperature are the same, the generation of internal stress is greatly reduced, gaps at the joint of the ceramic frame and the metal middle plate are avoided, the waterproof performance of the joint of the ceramic frame and the metal middle plate is improved, the connection strength of the ceramic frame and the metal middle plate is integrally improved, and the product quality is improved.
The middle frame obtained by the frame preparation method uses the ceramic as a frame material, so that the frame has a texture of being warm and moist like jade, hard and wear-resistant, the frame has good durability, the ceramic can not shield signals, the design and arrangement of the antenna are convenient, the stability of signal transmission is improved, and the use experience of a user is improved.
In one embodiment, the absolute value of the difference between the first expansion amount and the second expansion amount does not exceed 20% of the second expansion amount. The 20% is only a preferable value, and does not limit the range of the difference between the first expansion amount and the second expansion amount.
In one embodiment, referring to fig. 2, the molding process includes:
placing ceramic powder containing a binder component into an injection molding machine, heating and converting into a viscous melt, then injecting into a mold, cooling, demolding and taking out to obtain a ceramic blank, forming a first fastening structure on the ceramic blank, and then removing the binder component in the ceramic blank by a physical or chemical method to obtain a ceramic blank.
The advantage of producing ceramic blanks by injection molding is that: the precision of the formed product is high, the density of the green body is uniform, the strength of the green body is high, the consistency of the quality of the sintered product is good, and the sintered ceramic product does not need to be machined or is machined in a small amount, so that the expensive ceramic machining cost is reduced; the forming process has high mechanization and automation degree, short forming period, convenient management and control in the production process and easy realization of mass and large-scale production; the ceramic product has extremely high size precision and surface finish, and the surface finish can reach 5um.
In one embodiment, referring to fig. 3, the method for preparing the frame further includes the following steps:
blank processing: the ceramic blank is sintered after being processed.
In a specific embodiment, machining the ceramic blank includes cutting the ceramic blank to conform to the dimensions of the ceramic blank.
In one embodiment, referring to fig. 3, the method for preparing the frame further includes the following steps:
ceramic processing: and (5) heating the ceramic frame after processing the ceramic frame. The ceramic frame is processed to meet at least one of the size or the surface smoothness of the frame; and/or processing a functional structure on the frame, wherein the functional structure can be used in the subsequent production process of the electronic equipment. Wherein, the size of the frame generally refers to one or more of the length, width, thickness, angle, radian and the like; the processing of the surface smoothness of the frame means removing burrs and burrs or grinding the surface; functional structures include, but are not limited to: USB holes, earphone holes, SIM card holes, side key hole lamps, etc. can be used for the structure in the subsequent production process.
In a specific embodiment, the manner in which the ceramic rim is machined includes at least one of abrasive machining, plastic machining, chemical machining, electrical machining, composite machining, and optical machining. Wherein the manner of abrasive machining includes, but is not limited to, grinding machining, polishing machining, abrasive belt machining, barrel machining, ultrasonic machining, shot peening machining, viscoelastic fluid machining; plastic working means include, but are not limited to, diamond plastic working, diamond plastic grinding; chemical processing means include, but are not limited to, etching, chemical polishing; the mode of electric machining includes, but is not limited to, electric discharge machining, electron beam machining, ion beam machining, plasma machining; the mode of composite machining includes, but is not limited to, photoetching, ELID grinding, ultrasonic electric spark machining; optical processing means include, but are not limited to, laser processing.
In a specific embodiment, machining the ceramic rim includes: and coating a metal layer on the surface of the first fastening structure through a spraying process.
It is particularly noted that when a metal layer is present on the ceramic rim, the maximum temperature reached by the ceramic rim during the heating step should be less than the melting point of the metal layer to avoid damaging the metal layer.
In one embodiment, referring to fig. 3, the method for preparing the frame further includes the following steps:
surface treatment of a middle plate: and carrying out surface treatment on the metal middle plate so that the surface performance and/or the surface finish of the metal middle plate meet the requirements. The surface treatment method includes at least one of electroplating, chemical plating, thermal diffusion, anodic oxidation, thermal spraying, low-pressure ion technology, surface alloying, magnetron sputtering coating, ion coating, PVD, ion oxidation and nanometer treatment.
In one embodiment, the first fastening structure is a tenon and the second fastening structure is a mortise.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The preparation method of the middle frame is characterized by comprising the following steps of:
taking: taking ceramic powder for producing ceramics;
and (3) forming: forming the ceramic powder into a required shape to obtain a ceramic blank, wherein a first fastening structure is formed on the ceramic blank;
sintering: sintering the ceramic blank to obtain a ceramic frame;
heating: heating the ceramic frame to make the first expansion amount of the ceramic frame equal to the second expansion amount of the metal middle plate in a molten state or make the difference value between the first expansion amount and the second expansion amount within a preset range;
and (3) die casting: and the metal middle plate is die-cast on the basis of the ceramic frame by adopting a die-casting process, and a second fastening structure which is in fit connection with the first fastening structure is formed on the metal middle plate.
2. The method of manufacturing a middle frame according to claim 1, wherein the molding process comprises:
placing ceramic powder containing a binder component into an injection molding machine, heating and converting into a viscous melt, then injecting into a mold, cooling, demolding and taking out to obtain a ceramic blank, forming a first fastening structure on the ceramic blank, and then removing the binder component in the ceramic blank by a physical or chemical method to obtain the ceramic blank.
3. The method for manufacturing a middle frame according to claim 1 or 2, further comprising the steps of:
blank processing: and processing the ceramic blank and then sintering.
4. A method of manufacturing a middle frame according to claim 3, wherein machining the ceramic blank comprises: cutting the ceramic blank to enable the size of the ceramic blank to meet the requirements.
5. The method for preparing a middle frame according to claim 1, further comprising the steps of:
ceramic processing: and heating the ceramic frame after processing the ceramic frame.
6. The method of claim 5, wherein the processing the ceramic rim comprises at least one of abrasive machining, plastic machining, chemical machining, electrical machining, composite machining, and optical machining.
7. The method of claim 5, wherein the processing the ceramic rim comprises: and coating a metal layer on the surface of the first fastening structure through a spraying process.
8. The method for preparing a middle frame according to claim 1, further comprising the steps of:
surface treatment of a middle plate: and carrying out surface treatment on the metal middle plate so that the surface performance and/or the surface finish of the metal middle plate meet the requirements.
9. The method of claim 1, wherein the first fastening structure is a tenon and the second fastening structure is a mortise.
10. The method of claim 1, wherein an absolute value of a difference between the first expansion amount and the second expansion amount is not more than 20% of the second expansion amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901700.7A CN116967424A (en) | 2023-07-20 | 2023-07-20 | Middle frame preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901700.7A CN116967424A (en) | 2023-07-20 | 2023-07-20 | Middle frame preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116967424A true CN116967424A (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310901700.7A Pending CN116967424A (en) | 2023-07-20 | 2023-07-20 | Middle frame preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116967424A (en) |
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2023
- 2023-07-20 CN CN202310901700.7A patent/CN116967424A/en active Pending
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