CN111113287A - Production method of 3D polishing brush for glass of mobile phone cover plate - Google Patents
Production method of 3D polishing brush for glass of mobile phone cover plate Download PDFInfo
- Publication number
- CN111113287A CN111113287A CN201911402193.2A CN201911402193A CN111113287A CN 111113287 A CN111113287 A CN 111113287A CN 201911402193 A CN201911402193 A CN 201911402193A CN 111113287 A CN111113287 A CN 111113287A
- Authority
- CN
- China
- Prior art keywords
- bristle
- assembly
- mobile phone
- polishing brush
- phone cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/04—Preparing bristles
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D3/00—Preparing, i.e. Manufacturing brush bodies
- A46D3/04—Machines for inserting or fixing bristles in bodies
- A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body
Abstract
The invention belongs to the technical field of automatic polishing machinery, and particularly relates to a production method of a 3D polishing brush for mobile phone cover plate glass, which comprises the following steps: manufacturing a mounting assembly: providing a PVC raw material, processing and molding the PVC raw material into an installation body, and processing an installation surface on the installation body; manufacturing a bristle component: providing plastic raw materials, putting the plastic raw materials into a bristle mould, and integrally injection-molding a bristle component with a bristle disk and a plurality of bristles positioned on the bristle disk, taking out the bristle component from the bristle mould, and connecting the bristle disk on the mounting surface. Through the method, the cover plate glass 3D polishing brush is subjected to the step, all parts of the brush hair component are subjected to integrated injection molding to simplify the production step, the production efficiency of the cover plate glass 3D polishing brush is improved, and meanwhile, the installation component does not need to be frequently replaced to reduce the waste of raw materials.
Description
Technical Field
The invention belongs to the technical field of automatic polishing machinery, and particularly relates to a production method of a 3D polishing brush for mobile phone cover plate glass.
Background
The polishing is a processing method for reducing the roughness of the surface of a workpiece by utilizing the mechanical, chemical or electrochemical action to obtain the brightness and flatness of the surface of the workpiece, the surface of the workpiece is modified and processed by utilizing a flexible polishing tool and abrasive particles or other polishing media, and a polishing brush is assembled on polishing equipment and used for polishing the workpiece in the industrial production process. Among the prior art, the production of the relevant accessory of polish brush carries out earlier, adopts to assemble the brush hair on the brush hair dish to polish the brush, assembles the brush hair dish on the mounting disc again, and on the brush hair dish that will have the brush hair at last assembles polishing equipment, realizes the surface finish treatment to the work piece through polishing equipment's operation, and this kind of prior art carries out the production equipment to polish the brush and has the production steps numerous and diverse, and production packaging efficiency is low, the higher problem of cost.
Disclosure of Invention
The invention aims to provide a method for producing a 3D polishing brush for glass of a mobile phone cover plate, and aims to solve the technical problems of low production efficiency and high cost of the 3D polishing brush for the glass of the mobile phone cover plate in the prior art.
In order to achieve the above purpose, the method for producing the 3D polishing brush for the glass of the mobile phone cover plate provided by the embodiment of the invention comprises the following steps:
manufacturing a mounting assembly: providing a PVC raw material, processing and molding the PVC raw material into an installation body, and processing an installation surface on the installation body;
manufacturing a bristle component: providing plastic raw materials, putting the plastic raw materials into a bristle mould, and integrally injection-molding a bristle component with a bristle disk and a plurality of bristles positioned on the bristle disk, taking out the bristle component from the bristle mould, and connecting the bristle disk on the mounting surface.
Preferably, in the bristle module manufacturing step, the bristle module is dried, and then the bristle module is taken out of the bristle mold;
in the bristle subassembly manufacturing step, the bristle subassembly is dried, and then the bristle subassembly is taken out of the bristle mold.
Further, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 83-87 ℃, and the Shore hardness of the dried bristle assembly is 50-75 HA;
or, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 93-97 ℃, and the Shore hardness of the dried bristle assembly is 80-95 HA;
or, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 98-102 ℃, and the Shore hardness of the dried bristle assembly is 95-98 HA;
or, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 103-107 ℃, and the Shore hardness of the dried bristle assembly is 60 HD-74 HD.
Preferably, in the bristle subassembly manufacturing step, the bristle mold is cleaned, inspected and tested before the plastic material is placed in the bristle mold.
Preferably, in the bristle assembly manufacturing step, a hook and loop fastener is further provided, one of a pile surface and a hook surface of the hook and loop fastener is connected to the mounting surface, and the other of the pile surface and the hook surface of the hook and loop fastener is connected to the bristle disc.
Preferably, in the bristle assembly manufacturing step, when the plastic material is placed in the bristle mold, the temperature of the barrel during injection molding is controlled to be 177-232 ℃.
Preferably, in the bristle pack manufacturing step, the injection-molded bristle disc is in a sector shape, a ring shape, a circular shape, or a rectangular shape.
Preferably, each of the bristles is injection molded to have a cross-section of a circular, square, diamond, triangular, or the like.
Preferably, in the bristle sub-assembly fabricating step, the end of each of the bristles, which are injection-molded, forms a flat surface.
Preferably, in the mounting module manufacturing step, the mounting body formed by processing the PVC material has a disk shape, and the mounting surface is processed at an end of the disk-shaped mounting body.
Or, in the mounting member manufacturing step, the mounting body formed by processing the PVC material is in a circular shaft shape, and the mounting surface is processed on a circumferential side portion of the mounting body in the circular shaft shape.
Preferably, in the step of manufacturing the mounting assembly, at least one axially-arranged fixing mounting hole is formed in the mounting body which is formed by machining.
One or more technical schemes in the method for producing the 3D polishing brush for the glass of the mobile phone cover plate provided by the embodiment of the invention at least have one of the following technical effects:
according to the production method of the 3D polishing brush for the glass of the mobile phone cover plate, the installation component and the brush hair component are respectively manufactured, the installation component is firstly processed by PVC raw materials, the PVC raw materials are processed and molded into the installation body through processing, then the installation surface of the installation body is processed on the processed and molded installation body, and the installation body with the installation surface is obtained. When making the brush hair subassembly, carry out inspection and preliminary treatment to the plastic raw materials earlier, make the plastic raw materials reach the required standard of processing production, put into the brush hair mould with the plastic raw materials that will accord with the standard and carry out integrative injection moulding, the output has brush hair dish and a plurality of being located the brush hair subassembly of the brush hair on the brush hair dish takes out the brush hair subassembly after will shaping from the brush hair mould, then passes through the brush hair dish with integrative injection moulding's brush hair subassembly and install the equipment that is connected between the installation face of subassembly and realizes brush hair subassembly and installation subassembly and obtain fashioned cell-phone cover plate glass 3D polish brush. Through the method, the cover plate glass 3D polishing brush is subjected to the step, all parts of the brush hair component are subjected to integrated injection molding to simplify the production step, the production efficiency of the cover plate glass 3D polishing brush is improved, and meanwhile, the installation component does not need to be frequently replaced to reduce the waste of raw materials.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart of a method for producing a 3D polishing brush for glass covers of mobile phones according to an embodiment of the present invention.
Fig. 2 is a top view of a disk mounting assembly of a method for producing a 3D polishing brush for cover glass of a mobile phone according to an embodiment of the present invention.
Fig. 3 is an effect diagram of a circular shaft-shaped mounting body in the method for producing a 3D polishing brush for glass of a mobile phone cover according to the embodiment of the present invention.
Fig. 4 is a diagram illustrating an effect of a fan-shaped bristle assembly of a method for producing a 3D polishing brush for glass covers of mobile phones according to an embodiment of the present invention.
Fig. 5 is an assembly diagram of a bristle assembly and a mounting assembly of a disk brush in the method for producing a 3D polishing brush for mobile phone cover glass according to an embodiment of the present invention.
Fig. 6 is a side view of a disc brush of a method for producing a 3D polishing brush for mobile phone cover glass according to an embodiment of the present invention.
Fig. 7 is an effect diagram of a rectangular bristle component of the method for producing a 3D polishing brush for glass covers of mobile phones according to the embodiment of the present invention.
Fig. 8 is a diagram illustrating an effect of a barrel brush in the method for producing a 3D polishing brush for glass covers of mobile phones according to the embodiment of the present invention.
Fig. 9 is a partial enlarged view of a in fig. 6.
Fig. 10 is a partial enlarged view of B in fig. 8.
Fig. 11 is an effect diagram of a cylindrical bristle assembly of the method for producing a 3D polishing brush for glass covers of mobile phones according to the embodiment of the present invention.
Fig. 12 is an effect diagram of a prismatic bristle assembly of a method for producing a 3D polishing brush for glass covers of mobile phones according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10-mounting assembly 11-mounting body 12-mounting surface
13-fixed mounting hole 20-bristle component 21-bristle disk
22-bristle 23-plane 30-magic tape
31-fluff surface 32-barbed surface.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in fig. 1-10, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.
In an embodiment of the present invention, as shown in fig. 1 to 3 and fig. 6 to 7, a method for producing a 3D polishing brush for a cover glass of a mobile phone is provided, which includes the following steps:
manufacturing the mounting assembly 10: providing a PVC raw material, processing and molding the PVC raw material into a mounting body 11, processing a mounting surface 12 on the mounting body 11, and processing the mounting surface 12 on the mounting body 11 processed by the PVC raw material so as to be convenient for assembling parts on the mounting assembly 10;
According to the production method of the 3D polishing brush for the cover plate glass of the mobile phone, the installation component 10 and the brush hair component 20 are respectively manufactured, the installation component 10 is firstly processed by PVC raw materials, the PVC raw materials are processed and molded into the installation body 11 through processing, then the installation surface 12 of the installation body 11 is processed on the processed and molded installation body 11, and the installation body 11 with the installation surface 12 is obtained. When making brush hair subassembly 20, carry out inspection and preliminary treatment to the plastic raw materials earlier, make the plastic raw materials reach the required standard of processing production, put into the plastic raw materials that will accord with the standard and carry out integrative injection moulding in the brush hair mould, the output has brush hair dish 21 and a plurality of being located brush hair subassembly 20 of brush hair 22 on the brush hair dish 21 takes out the brush hair subassembly 20 after will forming from the brush hair mould, then realizes brush hair subassembly 20 and installation component 10's equipment through being connected between brush hair dish 21 and installation component 10 installation face 12 with integrative injection moulding's brush hair subassembly 20 and obtains fashioned cell-phone cover plate glass 3D polish brush. Through the method, the cover plate glass 3D polishing brush is subjected to the step, all parts of the brush hair component 20 are subjected to integrated injection molding, so that the production steps are simplified, the production efficiency of the cover plate glass 3D polishing brush is improved, and meanwhile, the installation component 10 does not need to be frequently replaced to reduce the waste of raw materials.
In another embodiment of the present invention, as shown in fig. 4 and 7, in the step of manufacturing the bristle sub-assembly 20, the bristle sub-assembly 20 is dried, and then the bristle sub-assembly 20 is taken out from the bristle mold, so that the bristle sub-assembly 20 has a certain hardness by drying the bristle sub-assembly 20, and then the bristle sub-assembly 20 meeting the production standard is taken out.
Further, the drying treatment is specifically that the bristle assembly 20 is dried at 83-87 ℃ for 2.5-3.5 hours, and the shore hardness of the dried bristle assembly 20 is 50-75 HA, further, the temperature of the drying treatment of the bristle assembly 20 can be 83 ℃, 84 ℃, 85 ℃, 86 ℃, 87 ℃, the time for drying the bristle assembly 20 can be 2.5 hours, 3 hours, 3.5 hours, and when the temperature is 85 ℃, the shore hardness of the bristle assembly 20 can be between 50HA and 75HA only by drying for 3 hours;
or, the drying treatment is specifically that the bristle assembly 20 is dried at a temperature of 93 ℃ to 97 ℃ for 2.5 to 3.5 hours, and the shore hardness of the dried bristle assembly 20 is between 80HA and 95HA, further, the temperature of the drying treatment of the bristle assembly 20 can be 93 ℃, 94 ℃, 95 ℃, 96 ℃ and 97 ℃, the drying time of the bristle assembly 20 can be 2.5 hours, 3 hours and 3.5 hours, and when the temperature is 95 ℃, the shore hardness of the bristle assembly 20 can be between 80HA and 95HA only by drying for 3 hours;
or, the drying treatment is specifically that the bristle assembly 20 is dried at a temperature of 98-102 ℃ for 2.5-3.5 hours, and the shore hardness of the dried bristle assembly 20 is between 95HA and 98HA, further, the temperature of the drying treatment of the bristle assembly 20 can be 98 ℃, 99 ℃, 100 ℃, 101 ℃, 102 ℃, and the time for drying the bristle assembly 20 can be 2.5 hours, 3 hours, 3.5 hours, and when the temperature is 100 ℃, the shore hardness of the bristle assembly 20 can be between 95HA and 98HA only by drying for 3 hours;
or, the drying treatment is specifically that the bristle assembly 20 is dried at 103-107 ℃ for 2.5-3.5 hours, and the shore hardness of the dried bristle assembly 20 is between 60 HD-74 HD, further, the temperature of the drying treatment of the bristle assembly 20 may be 103 ℃, 104 ℃, 105 ℃, 106 ℃, 107 ℃, and the time for drying the bristle assembly 20 may be 2.5 hours, 3 hours, 3.5 hours, and when the temperature is 105 ℃, the shore hardness of the bristle assembly 20 can be between 60 HD-74 HD only by drying for 3 hours.
In another embodiment of the present invention, in the manufacturing step of the bristle assembly 20, before the plastic material is placed in the bristle mold, the bristle mold is cleaned, inspected, and tested, and the mold surface, the cavity, the gaps around the insert, the squirt nozzle, the flow channel, and the like are cleaned, so as to prevent oil stains from adhering to the product, or prevent the oil stains from blocking the exhaust of the mold, which affects the molding stability.
In another embodiment of the present invention, as shown in fig. 9 to 10, in the step of manufacturing the bristle subassembly 20, a hook and loop fastener 30 is further provided, one of a fluff surface 31 and a hook surface 32 of the hook and loop fastener 30 is connected to the mounting surface 12, the other of the fluff surface 31 and the hook surface 32 of the hook and loop fastener 30 is connected to the bristle disc 21, and the fluff surface 31 and the hook surface 32 of the hook and loop fastener 30 are respectively mounted on different surfaces, so that the mounting surface 12 and the bristle disc 21 are bonded through the fluff surface 31 and the hook surface 32 of the hook and loop fastener 30, and the bristle subassembly 20 and the mounting subassembly 10 are connected to each other.
In another embodiment of the present invention, in the bristle subassembly 20 manufacturing step, when the plastic material is placed in the bristle mold, the temperature of the barrel during the injection molding process is controlled to be 177 to 232 ℃, the temperature of the barrel is gradually increased from one side (rear end) of the hopper to the nozzle (front end) so as to enable the TPU temperature to be smoothly increased to achieve the purpose of uniform plasticization, and the temperature of the nozzle is slightly lower than the highest temperature of the barrel so as to prevent the melt from drooling in the straight-through nozzle.
In another embodiment of the present invention, as shown in fig. 4 and 7, in the manufacturing step of the bristle module 20, the injection molded bristle disc 21 has a fan shape, a ring shape, a circular shape or a rectangular shape, and is used for adapting to different types of mounting modules 10 by injection molding the bristle disc 21 into the fan shape, the ring shape, the circular shape or the rectangular shape.
In another embodiment of the present invention, as shown in fig. 11 to 12, the cross section of each of the bristles 22 formed by injection molding is circular, square, diamond or triangular, and the shape of the cross section of each of the bristles is changed to make each of the bristles be cylindrical, prismatic or the like, and the shape of the bristles 22 of the mobile phone cover glass 3D polishing brush is changed to make the produced mobile phone cover glass 3D polishing brush meet the diversity of the customer requirements, and the corresponding production of the mobile phone cover glass 3D polishing brush is provided according to different requirements of the customer.
In another embodiment of the present invention, in the step of manufacturing the bristle sub-assembly 20, the end of each of the bristles 22 is formed into a flat surface 23 by injection molding, and the polished end of the plurality of bristles 22 is injection molded into the flat surface 23 by injection molding, so that the plurality of bristles 22 have a larger contact surface with the polished product, thereby achieving a better polishing effect.
In another embodiment of the present invention, as shown in fig. 2 and 5, in the manufacturing step of the mounting member 10, the mounting body 11 formed by processing the PVC material is shaped like a disk, the mounting surface 12 is processed at the end of the mounting body 11 shaped like a disk, the disc-shaped mounting body 11 formed by processing is used for assembling a disk brush with the fan-shaped and ring-shaped bristle assembly 20, and the fan-shaped and ring-shaped bristles 22 are adhered to the mounting surface 12 at the end of the disc-shaped mounting body 11 through the magic tape 30 to polish the product.
Or, as shown in fig. 3 and 8, in the manufacturing step of the mounting assembly 10, the mounting body 11 formed by processing the PVC material is in a circular shaft shape, the mounting surface 12 is processed on the circumferential side of the mounting body 11 in the circular shaft shape, the circular shaft-shaped mounting body 11 formed by processing is used for assembling a cylindrical brush with the circular and rectangular bristle assemblies 20, and the circular and rectangular bristles 22 are adhered to the mounting surface 12 on the circumferential side of the circular shaft-shaped mounting body 11 through the magic tape 30 to polish the product.
In another embodiment of the present invention, as shown in fig. 1 to 2, in the manufacturing step of the mounting assembly 10, at least one axially arranged fixing mounting hole 13 is formed in the mounting body 11, which is formed by machining, at least one axially arranged fixing mounting hole 13 is formed in the mounting body 11, and the mounting assembly 10 is mounted through the at least one fixing mounting hole 13 by the at least one axially arranged fixing mounting hole 13.
For the bristle component 20 which reaches a certain abrasion degree after being used, the plastic raw material obtained after being dissolved is added into the plastic raw material used by injection molding again through dissolution, so that the material is recycled, and the production cost is saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A production method of a 3D polishing brush for glass of a mobile phone cover plate is characterized by comprising the following steps: the method comprises the following steps:
manufacturing a mounting assembly: providing a PVC raw material, processing and molding the PVC raw material into an installation body, and processing an installation surface on the installation body;
manufacturing a bristle component: providing plastic raw materials, putting the plastic raw materials into a bristle mould, and integrally injection-molding a bristle component with a bristle disk and a plurality of bristles positioned on the bristle disk, taking out the bristle component from the bristle mould, and connecting the bristle disk on the mounting surface.
2. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: in the bristle component manufacturing step, the bristle component is dried firstly, and then the bristle component is taken out of the bristle mold;
the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 83-87 ℃, and the Shore hardness of the dried bristle assembly is 50-75 HA;
or, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 93-97 ℃, and the Shore hardness of the dried bristle assembly is 80-95 HA;
or, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 98-102 ℃, and the Shore hardness of the dried bristle assembly is 95-98 HA;
or, the drying treatment is specifically that the bristle assembly is dried for 2.5-3.5 hours at the temperature of 103-107 ℃, and the Shore hardness of the dried bristle assembly is 60 HD-74 HD.
3. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: in the bristle assembly manufacturing step, before the plastic raw material is placed in the bristle mold, the bristle mold is cleaned, inspected and subjected to mold testing.
4. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: in the bristle component manufacturing step, a magic tape is further provided, one surface of a fluff surface and a hook surface of the magic tape is connected with the mounting surface, and the other surface of the fluff surface and the hook surface of the magic tape is connected with the bristle disc.
5. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: in the bristle assembly manufacturing step, when the plastic raw material is placed into the bristle mold, the temperature of the charging barrel in the injection molding process is controlled between 177 ℃ and 232 ℃.
6. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: in the bristle assembly manufacturing step, the injection molded bristle disc is in a sector shape, an annular shape, a circular shape or a rectangular shape.
7. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: the cross section of each injection molded bristle is circular, square, rhombic or triangular.
8. The mobile phone cover glass 3D polishing brush according to claim 1, wherein: in the bristle pack manufacturing step, the end of each of the bristles, which are injection molded, forms a flat surface.
9. The mobile phone cover glass 3D polishing brush according to any one of claims 1 to 7, wherein: in the mounting member manufacturing step, the mounting body formed by processing the PVC material is disc-shaped, and the mounting surface is processed at an end of the disc-shaped mounting body;
or the installation body formed by processing the PVC raw material is in a circular shaft shape, and the installation surface is processed on the circumferential side part of the installation body in the circular shaft shape.
10. The mobile phone cover glass 3D polishing brush according to any one of claims 1 to 7, wherein: in the manufacturing step of the mounting assembly, at least one axially-arranged fixed mounting hole is formed in the mounting body which is formed by machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911402193.2A CN111113287A (en) | 2019-12-30 | 2019-12-30 | Production method of 3D polishing brush for glass of mobile phone cover plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911402193.2A CN111113287A (en) | 2019-12-30 | 2019-12-30 | Production method of 3D polishing brush for glass of mobile phone cover plate |
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| Publication Number | Publication Date |
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| CN111113287A true CN111113287A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911402193.2A Pending CN111113287A (en) | 2019-12-30 | 2019-12-30 | Production method of 3D polishing brush for glass of mobile phone cover plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366015A (en) * | 2022-09-20 | 2022-11-22 | 广东捷骏电子科技有限公司 | Preparation method of ceramic brush wheel |
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| CN115366015B (en) * | 2022-09-20 | 2023-08-15 | 广东捷骏电子科技有限公司 | Preparation method of ceramic brush wheel |
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Application publication date: 20200508 |