WO2021036878A1

WO2021036878A1 - Housing and manufacturing method thereof

Info

Publication number: WO2021036878A1
Application number: PCT/CN2020/109978
Authority: WO
Inventors: 赵岩峰
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-08-27
Filing date: 2020-08-19
Publication date: 2021-03-04
Also published as: CN112449515A

Abstract

A housing (100) and a manufacturing method thereof, and an electronic apparatus. The housing (100) comprises at least two ceramic layers (113) arranged in a stacked manner. Two adjacent ceramic layers (113) have different colors. The housing (100) comprises an outer surface (111) and a side surface surrounding the outer surface (111). At least one ceramic layer (113) has a recess and a protrusion at a side surface.

Description

Shell and manufacturing method thereof

Technical field

This application relates to the technical field of housings, and in particular to a housing and a manufacturing method thereof.

Background technique

The blank of zirconia ceramic products is usually in one color, such as black, white, red, blue, etc., which is relatively monotonous. Even if other colors are painted by spraying or PVD, the surface abrasion resistance and feel will be greatly reduced. .

Summary of the invention

Based on this, it is necessary to provide a housing and a manufacturing method thereof.

A casing includes at least two laminated ceramic layers, the colors of the two adjacent ceramic layers are different; the casing includes an outer surface and a side surface surrounding the outer surface, at least one layer The ceramic layer presents a concavo-convex structure on the side surface.

A manufacturing method of a shell includes the following steps:

Step S110, preparing at least two layers of ceramic green bodies with different colors;

Step S120, providing a mold, the surface of which is provided with protrusions or grooves;

Step S130, the green ceramic bodies are laminated on the surface of the mold, and the adjacent green ceramic bodies are of different colors; the laminated ceramic green bodies are placed on the protrusions or the grooves. Concave-convex structure is formed at the place;

Step S140, sintering the laminated ceramic green body to obtain a ceramic rough body, and the ceramic green body forms a ceramic layer with a concave-convex structure;

Step S150, post-processing the ceramic rough to make the shell;

Wherein, the housing includes an outer surface and a side surface surrounding the outer surface, and the ceramic layer presents the concave-convex structure on the side surface.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, without creative work, the drawings of other embodiments can also be obtained based on these drawings.

Figure 1 is a perspective view of an electronic device provided by an embodiment;

Figure 2 is a rear view of the electronic device shown in Figure 1;

3 is a perspective view of the housing of the electronic device shown in FIG. 2;

4 is a cross-sectional view of part A-A of the housing of the electronic device shown in FIG. 2;

Figure 5 is a perspective view of a housing provided by another embodiment;

Fig. 6 is an enlarged view of the structure of part B of the housing shown in Fig. 5;

Fig. 7 is a manufacturing flow chart of a housing provided by an embodiment;

FIG. 8 is a detailed flowchart of step S110 in FIG. 7;

FIG. 9 is a manufacturing flow chart of the housing provided by another embodiment;

Figure 10 is a cross-sectional view of a ceramic green body laminated on a mold in an embodiment;

Figure 11 is a top view of the structure shown in Figure 10;

Figure 12 is a cross-sectional view of a ceramic filling layer covering a ceramic green body in an embodiment;

Figure 13 is a cross-sectional view of the ceramic green body after demolding, in which the surface of the ceramic green body that fits the mold is patched;

Fig. 14 is a detailed flowchart of step S150 in Fig. 7.

detailed description

In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The preferred embodiments of the application are shown in the accompanying drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive.

As shown in FIGS. 1 and 2, in an embodiment, an electronic device 10 is provided, and the electronic device 10 may be a smart phone, a computer, or a tablet. The electronic device 10 includes a display screen assembly 200, a housing 100 and a circuit board. The material of the housing 100 can be ceramic or glass. It can be understood that the housing 100 may be a flat panel structure, that is, a 2D structure, or a 2.5D or 3D structure. When the housing 100 is a 2D structure or a 2.5D structure, the electronic device 10 further includes a middle frame, a display assembly 200 and The housing 100 is respectively fixed on opposite sides of the middle frame. The housing 100, the display assembly 200 and the middle frame together constitute the external structure of the electronic device 10, and the circuit board is located in the electronic device 10; when the housing 100 has a 3D structure , The display screen assembly 200 is fixed on the casing 100, and the display screen assembly 200 and the casing 100 together constitute the external structure of the electronic device 10, and the circuit board is located inside the electronic device 10. Electronic components such as controller, storage unit, power management unit, baseband chip and so on are integrated on the circuit board. The display screen assembly 200 is used to display pictures or fonts, and the circuit board can control the operation of the electronic device 10.

In one embodiment, the display assembly 200 adopts an LCD (Liquid Crystal Display) screen for displaying information. The LCD screen may be a TFT (Thin Film Transistor) screen or an IPS (In-Plane Switching) screen. ) Screen or SLCD (Splice Liquid Crystal Display) screen. In another embodiment, the display assembly 200 uses an OLED (Organic Light-Emitting Diode, organic electro-laser display) screen for displaying information. The OLED screen may be AMOLED (Active Matrix Organic Light-Emitting Diode). Polar body) screen or Super AMOLED (Super Active Matrix Organic Light Emitting Diode) screen or Super AMOLED Plus (Super Active Matrix Organic Light Emitting Diode Plus, magic screen) screen. Under the control of the controller, the display screen assembly 200 can display information and provide an operation interface for the user.

As shown in FIGS. 3 and 4, in one embodiment, the housing 100 includes at least two laminated ceramic layers 113, and the colors of the two adjacent ceramic layers 113 are different. The housing 100 includes an outer surface 111 and a side surface surrounding the outer surface 111. The outer surface 111 is located on the outer ceramic layer of the casing 100. It can be understood that the outer ceramic layer is the outermost ceramic layer of the casing 100, that is, the ceramic layer where the outer surface 111 is located. The side surface includes a first side 101 and a third side 103 arranged opposite to each other, and a second side 102 and a fourth side 104 arranged opposite to each other. The second side 102 is connected to one end of the first side 101 and the third side 103, The fourth side surface 104 is connected to the other ends of the first side surface 101 and the third side surface 103. The at least one ceramic layer 113 exhibits a concave-convex structure 500 on at least one of the first side 101, the second side 102, the third side 103, and the fourth side 104. The concave-convex structure 500 is located on a ceramic layer other than the ceramic layer on the side of the casing 100, and the side of the outer ceramic layer that is away from the outer surface 111 can be matched with the concave-convex structure 500. It is understandable that the concave-convex structure 500 can be a broken line structure, a smooth curve structure, or an arc structure, which is not limited here; the number of the concave-convex structure 500 can be one or more, which is not done here. limited. The first side 101 and the third side 103 form the length direction of the electronic device 10, that is, the y direction, the second side 102 and the fourth side 104 form the width direction of the electronic device 10, that is, the x direction, the outer surface 111 of the housing 100 and the display screen. The thickness direction of the electronic device 10 is formed between the outer surfaces of the component 200, that is, the z direction.

As shown in FIGS. 5 and 6, in an embodiment, the housing 100 has a flat structure, that is, a 2D structure or a 2.5D structure, and the first side 101, the second side 102, the third side 103, and the fourth side 104 are respectively It is the outer peripheral surface of the flat case 100. The concave-convex structure 500 may be located on any one of the first side 101, the second side 102, the third side 103 and the fourth side 104.

As shown in FIGS. 3 and 4, in another embodiment, the housing 100 has a 3D structure and includes a flat plate portion 110 and a crimped portion 120, and the crimped portion 120 extends from the outer periphery of the flat plate portion 110. The side surface includes a flat side 114 and a crimped side 115, the flat side 114 is located at the flat portion 110, and the crimped side 115 is located at the crimped portion 120. The side surface 114 of the flat panel includes one side of the flat panel, three sides of the flat panel, and two sides of the flat panel and the four sides of the flat panel arranged opposite to each other. The two sides of the flat panel are connected to one end of the flat panel and the third side of the flat panel. One side and the other end of the three sides of the plate. The crimping side 115 includes a crimping side and a crimping three sides that are arranged opposite to each other, and a crimping two sides and a crimping four sides that are arranged opposite to each other. The crimping two sides are connected to the crimping one side and the crimping three sides. At one end, the four sides of the crimp are connected to one side of the crimp and the other end of the three sides of the crimp. One side of the flat plate and one side of the crimp form the first side 101, the two sides of the flat plate and the second side of the crimp form the second side 102, the three sides of the plate and the three sides of the crimp form the third side 103, and the four sides of the plate and the four sides of the crimp form the third side 103.形四面104。 Shape fourth side 104. The concave-convex structure 500 is partially located on the side surface 114 of the flat plate and partially located on the curved side surface 115, and the concave-convex structure 500 penetrates the curved side surface 115 in the thickness direction of the electronic device 10, that is, the z direction.

The casing 100 of the present application includes ceramic layers 113 of different colors. The side surface of the casing 100 has a concave-convex structure 500, and the concave-convex structure 500 between the different ceramic layers 113 has a color contrast effect, so that the side of the casing 100 The surface has a color contrast effect in the thickness direction, and the ceramic layer 113 of different colors has a shape change on the side surface. The combination of the two makes the side surface of the casing 100 have a better ornamental effect, and enhances the appearance of the casing 100. Expressive appearance.

As shown in FIG. 7, in an embodiment, a manufacturing method of the housing 100 is provided, which includes the following steps:

Step S110, preparing at least two layers of ceramic green bodies 620, and different ceramic green bodies 620 include at least two colors;

In step S120, a mold 600 is provided, and the surface of the mold 600 is provided with protrusions 610 or grooves;

In step S130, the ceramic green body 620 is laminated on the surface of the mold 600. The adjacent ceramic green bodies 620 have different colors; the protrusions 610 or grooves extend to the edge of the ceramic green body 620, and the laminated ceramic green bodies 620 There is a concave-convex structure 500 at the protrusion 610 or the groove;

In step S140, the ceramic green body 620 is sintered to obtain the ceramic layer 113, and the laminated ceramic layer 113 forms a ceramic rough body;

Step S150, post-processing the ceramic rough body into a housing 100;

Wherein, the housing 100 includes an outer surface 111 and a side surface surrounding the outer surface 111, and at least one ceramic layer 113 presents a concave-convex structure 500 on the side surface.

As shown in FIGS. 7 and 8, in an embodiment, step S110 includes step S111, disposing white powder and color powder. In terms of mass percentage, the white powder includes 0-0.25% alumina, 1%-5wt% yttrium oxide, the balance is zirconium oxide containing hafnium oxide and other trace impurities. The white powder D50 has a particle size of 0.1μm to 20μm. In terms of mass percentage, the color powder includes 90-99% zirconia, 1-5% yttrium oxide, 0.1-3% alumina, and 0.8-8% colorant. The coloring agent is used to color white zirconium oxide. The coloring agent can be erbium trioxide, neodymium trioxide, praseodymium trioxide, cerium oxide, iron trioxide, chromium trioxide, manganese trioxide, oxide A combination of one or more of zinc, magnesium, silicon, calcium, cobalt, nickel, copper, vanadium, cadmium, and tin.

As shown in FIGS. 7 and 8, in one embodiment, step S110 includes step S112 after step S111 to prepare white paste and color paste. The white powder, dispersant and binder are uniformly mixed in a ball mill. The temperature should be controlled not to be higher than 30°C during ball milling, and the grinding time should be 45h to 58h. According to the mass percentage, the ratio of white powder, dispersant and binder is 50:3:1. Of course, the ratio between the three can be changed according to the needs of actual effects. The dispersant is at least one of polyacrylic acid, polyethylene glycol and glycerin, and the binder is at least one of polyvinyl butyral, dioctyl phthalate, and dibutyl phthalate. The uniformly mixed white powder, dispersant and binder are dissolved in a solvent to obtain a white slurry. The color powder, dispersant and binder are uniformly mixed in a ball mill. The temperature should be controlled not to be higher than 30°C during ball milling, and the grinding time should be 45h to 58h. According to the mass percentage, the ratio of color powder, dispersant and binder is 50:3:1. Of course, the ratio between the three can be changed according to the needs of actual effects. The dispersant is at least one of polyacrylic acid, polyethylene glycol, and glycerin, and the binder is at least one of polyvinyl butyral, dioctyl phthalate, and dibutyl phthalate. The uniformly mixed color powder, dispersant and binder are dissolved in a solvent to obtain a color paste.

As shown in FIGS. 7 and 8, in one embodiment, step S110 includes step S113 after step S112 to prepare white cast blanks and color cast blanks. The white paste and the color paste are vacuum degassed and viscosity adjusted respectively. The parameters for vacuum defoaming of white casting slurry and color casting slurry are: vacuum defoaming in a vacuum sealed stirring tank with a vacuum degree of -0.95Mpa, stirring speed 80～120r/min, stirring time 15min ~30min. The processed white slurry and color slurry are respectively cast and molded in a casting machine, and the casting process parameters are adjusted to obtain a white casting blank and a color casting blank with a thickness of 0.1 mm to 1.0 mm.

As shown in Figs. 7 and 8, in one embodiment, step S110 includes step S114 after step S113, respectively punching and forming the white cast blank and the colored cast blank to obtain a ceramic green body 620, The ceramic green body 620 is white and colored. Specifically, the prepared white cast blanks and colored cast blanks are respectively placed in a designed mold for press forming to obtain a ceramic green body 620, the purpose of which is to prepare a ceramic green body 620 of suitable size to match the subsequent The use of lamination and isostatic pressing. The size of the ceramic green body 620 is determined according to the size of the housing 100 and the sintering shrinkage rate.

As shown in FIGS. 9 and 10, in one embodiment, in step S120, a mold 600 is provided, and the surface of the mold 600 is provided with protrusions 610 or grooves. The mold 600 may be a single mold 600. The height or depth of the protrusion 610 or the groove is determined according to the design of the housing 100, for example, 0.2 mm to 5 mm. The number of grooves or protrusions 610 can be designed according to actual design, and can be one or more, which is not limited here. In another embodiment, the mold 600 includes an upper mold and a lower mold, the lower mold is provided with protrusions 610 or grooves, the upper mold is provided with grooves or protrusions 610 corresponding to the lower mold, and the upper mold and the lower mold After the mold is closed, there is a distance between the protrusion 610 and the groove after mating, so that the ceramic green body 620 can be located between the two.

As shown in FIGS. 9 to 11, in one embodiment, in step S130, the ceramic green bodies 620 are laminated on the surface of the mold 600, and the adjacent ceramic green bodies 620 are different in color; the laminated ceramic green bodies 620 There is a concave-convex structure 500 at the protrusion 610 or the groove, and the concave-convex structure 500 extends to the edge of the ceramic green body 620. The number of stacked layers is determined according to the design of the housing 100, such as 3-10 layers, etc., and the number of white ceramic green bodies 620 and colorful ceramic green bodies 620 is not limited. It is understandable that the concave-convex structure 500 formed at the protrusions 610 or grooves can be arranged along the length direction of the ceramic green body 620, can also be arranged along the width direction of the ceramic green body 620, or can be inclined on the ceramic green body 620. The settings are not limited here. As shown in FIG. 11, when the ceramic green body 620 is viewed from above, the edge line of the concave-convex structure 500 may be a straight line, a smooth transition curve, or an arc line.

As shown in Figures 9 and 12, in one embodiment, including step S135 after step S130 and before step S140, the ceramic green body 620 is covered with a ceramic filling layer 630 on the side away from the mold 600, and the ceramic filling The side of the layer 630 facing the ceramic green body 620 is matched with the concave-convex structure 500. The material of the ceramic filling layer 630 is the same as the material of the ceramic green body 620, and is also produced by casting and stamping. The color of the ceramic filling layer 630 is selected according to the color of the design of the housing 100. The thickness of the different ceramic green bodies 620 is 0.1 mm to 1.0 mm, and the total laminated thickness of the ceramic green body 620 and the ceramic filling layer 630 is 0.5 mm to 3.0 mm. The ceramic filling layer 630 covers the concavo-convex structure 500 so that the surface of the outermost layer is flat, so that the outer surface of the subsequently produced ceramic rough body is flat, which is convenient for processing into the housing 100 with the required shape and size.

As shown in FIGS. 9 and 12, in one embodiment, it includes step S136 after step S135 and before step S140, in which the ceramic green body 620, the ceramic filling layer 630 and the mold are laminated on the surface of the mold 600 600 together for isostatic pressure treatment. Specifically, the ceramic green body 620, the ceramic filling layer 630 and the mold 600 are put into a warm isostatic press for isostatic pressing, which can meet the needs of 2.5D and 3D shapes, and can also improve the ceramic body and the ceramic filling layer. 630 density and uniformity, after sintering, a ceramic rough body that meets the requirements is obtained. The pressure of the isostatic press is set at 120MPa～200MPa, and the temperature is set at 70℃～100℃.

As shown in FIG. 13, in one embodiment, the ceramic green body 620 and the ceramic filling layer 630 after isostatic pressing are removed from the mold 600, and the side of the ceramic green body 620 away from the ceramic filling layer 630 is removed from the mold 600. The shape is supplemented and the concave-convex structure 500 is filled, so that the subsequently formed ceramic rough body is easy to be fixed with a clamp, so that it is easy to process.

As shown in FIG. 9, in one embodiment, step S137 is included after step S136 and before step S140, in which the ceramic green body 620 and the ceramic filling layer 630 that have been isostatically pressed are subjected to degreasing treatment. The degreasing process is performed in a degreasing box, and the degreasing process can discharge the organic components in the ceramic green body 620 and the ceramic filling layer 630. The degreasing temperature is 300℃～600℃, and the degreasing time is 0.5h～4h. It is understandable that the side of the ceramic green body 620 away from the ceramic filling layer 630 has been patched, so it is a flat surface. The ceramic material at the patching position is subsequently degreased together with the ceramic green body 620 and the ceramic filling layer 630. Sintering treatment.

As shown in FIG. 9, in one embodiment, in step S140, the ceramic green body 620 and the ceramic filling layer 630 are both formed by sintering to form the ceramic layer 113, and the laminated ceramic layer 113 forms the ceramic rough body. It can be understood that the ceramic filling layer 630 forms the outer ceramic layer of the casing 100, and the ceramic green body 620 forms the ceramic layer 113 other than the ceramic layer on the outer side of the casing. The degreased product is transferred to a high-temperature sintering furnace for sintering at a sintering temperature of 1300°C to 1550°C to obtain a crude ceramic embryo.

As shown in FIG. 4, FIG. 13 and FIG. 14, in one embodiment, in step S150, the ceramic rough body is post-processed into the housing 100. Step S150 includes step S151 to perform CNC machining on the ceramic rough body. The outer surface of the ceramic rough body is the surface formed by the ceramic filling layer 630, that is, the surface of the outer ceramic layer. The parts processed by CNC include the outer surface, inner surface and The side surface makes the shape of the ceramic rough body meet the requirements. The processing depth of the outer surface and the inner surface of the ceramic rough body is 0.2 mm to 0.3 mm, and the processing depth of the outer surface of the ceramic rough body is smaller than the minimum thickness of the outer ceramic layer. Step S150 includes step S152 after step S151, polishing the ceramic rough blank after CNC machining, the surface removal machining allowance is less than 0.05mm, and the ceramic rough blank with flatness less than 0.1mm is obtained, and the total thickness of the ceramic rough blank is controlled at Within 0.3mm～0.65mm, the total thickness of the ceramic rough body can of course also be other values according to actual needs. Step S150 includes step S153 after step S152, laser blasting the polished ceramic rough body to manufacture button holes, earphone holes and the like. Step S150 includes step S154 after step S153, coating the lasered ceramic rough body to form a LOGO to obtain the housing 100. Step S150 includes step S155 after step S154, cleaning and packaging the housing 100.

In the manufacturing method of the casing 100 of the present application, the casing 100 is manufactured by stacking and sintering the ceramic green bodies 620 of different colors. When the stacking is installed, the surface of the mold 600 has protrusions 610 or grooves, so that the laminate The ceramic green body 620 is provided with a concave-convex structure 500, the side surface of the casing 100 has a concave-convex structure 500, and there is a color contrast effect between the concave-convex structures 500 between different ceramic layers 113, so that the side surface of the casing 100 has an existing thickness The color contrast effect in the direction, the ceramic layer 113 of different colors has a shape change on the side surface, showing different colors of unevenness. The combination of color and unevenness makes the side surface of the housing 100 have a better view. It improves the appearance and expressiveness of the housing 100.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation manners of the present application, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A casing includes at least two laminated ceramic layers, the colors of the two adjacent ceramic layers are different; the casing includes an outer surface and a side surface surrounding the outer surface, at least one layer The ceramic layer presents a concavo-convex structure on the side surface.
The housing according to claim 1, wherein the housing includes a flat plate portion and a curled edge portion, the curled edge portion extends from an outer circumference of the flat plate portion, and the outer surface is located on the flat plate. Section; the side surface includes a flat side and a crimped side, the flat side is located in the flat portion and surrounds the outer surface, the crimped side is located in the crimped portion, the flat side and the Smooth transition between the curved side surfaces; the concave-convex structure is located on the flat plate side surface and the curved side surface.
4. The housing according to claim 2, wherein in the thickness direction of the flat plate portion, there is a gap between the concave-convex structure and the outer surface, and the concave-convex structure penetrates the curved side surface.
The casing according to claim 1, wherein the outer surface is located on the outer ceramic layer of the casing, the concave-convex structure is located on the ceramic layer other than the outer ceramic layer, and the outer ceramic layer The side far away from the outer surface can be matched with the concave-convex structure.
A manufacturing method of a shell includes the following steps:

Step S110, preparing at least two layers of ceramic green bodies with different colors;

Step S120, providing a mold, the surface of which is provided with protrusions or grooves;

Step S130, the green ceramic bodies are laminated on the surface of the mold, and the adjacent green ceramic bodies are of different colors; the laminated ceramic green bodies are placed on the protrusions or the grooves. Concave-convex structure is formed at the place;

Step S140, sintering the laminated ceramic green body to obtain a ceramic rough body, and the ceramic green body forms a ceramic layer with a concave-convex structure;

Step S150, post-processing the ceramic rough to make the shell;

Wherein, the housing includes an outer surface and a side surface surrounding the outer surface, and the ceramic layer presents the concave-convex structure on the side surface.
The manufacturing method of the housing according to claim 5, wherein the step S110 comprises the step of forming a white ceramic green body by casting and pressing the white cast blank, and applying the colored cast blank to the white ceramic green body. Colored ceramic green bodies are produced by casting and stamping.
The manufacturing method of the housing according to claim 6, wherein the white cast blank is cast to form a white ceramic green body, and the colored cast blank is cast to form a colored ceramic green body. Before the steps of the ceramic green body, it also includes:

A white slurry and a color slurry are prepared, and the white casting body and the color casting body are respectively prepared by the white slurry and the color slurry.
The manufacturing method of the housing according to claim 7, wherein the white slurry includes white powder, adhesive, dispersant and solvent.
The manufacturing method of the housing according to claim 8, wherein the white powder includes aluminum oxide, yttrium oxide, and zirconium oxide.
8. The manufacturing method of the housing according to claim 7, wherein the color paste includes color powder, adhesive, dispersant and solvent.
The method for manufacturing the casing according to claim 10, wherein the color powder includes zirconia, yttrium oxide, aluminum oxide and colorants.
The manufacturing method of the shell according to claim 5, characterized in that it comprises a step S135 which is located after the step S130 and before the step S140, on the side of the ceramic green body far away from the mold Covering a ceramic filling layer, the side of the ceramic filling layer facing the ceramic green body is matched with the concave-convex structure.
The manufacturing method of the housing according to claim 12, characterized in that it comprises a step S136 which is located after the step S135 and before the step S140, in which the ceramic production layer is laminated on the surface of the mold. The blank and the ceramic filling layer are isostatically pressed together with the mold.
The manufacturing method of the housing according to claim 13, characterized in that it comprises a step S137 after the step S136 and before the step S140, in which the isostatically pressed ceramic green body and the ceramic The ceramic filling layer is degreased.
The manufacturing method of the housing according to claim 14, wherein the degreasing temperature is 300 ℃ ~ 600 ℃.
The manufacturing method of the housing according to claim 14, wherein the degreasing time is 0.5h-4h.
The manufacturing method of the housing according to claim 12, wherein in the step S140, the ceramic rough body includes an outer ceramic layer, and the outer ceramic layer is made by sintering the ceramic filling layer, and The outer surface is located on the outer ceramic layer.
The manufacturing method of the housing according to claim 12, wherein, in the step S150, the post-processing includes CNC machining, and the side of the ceramic rough body facing away from the outer surface and the CNC machining is performed on the side of the ceramic rough body, and a shell including a flat plate part and a flange part is manufactured.