CN112677286A - Dipping device and dipping method for cylindrical carbon-carbon composite material - Google Patents
Dipping device and dipping method for cylindrical carbon-carbon composite material Download PDFInfo
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- CN112677286A CN112677286A CN202011391162.4A CN202011391162A CN112677286A CN 112677286 A CN112677286 A CN 112677286A CN 202011391162 A CN202011391162 A CN 202011391162A CN 112677286 A CN112677286 A CN 112677286A
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Abstract
The invention discloses a cylindrical carbon-carbon composite material impregnation device and an impregnation method thereof.
Description
Technical Field
The invention relates to a dipping device and a dipping method for a cylindrical carbon-carbon composite material.
Background
The carbon-carbon composite material has the advantages of low density, high specific gravity, ablation resistance, small thermal expansion coefficient, excellent thermal shock resistance, good frictional wear performance and the like, and is widely applied to the high-tech fields of aviation, aerospace, machinery, chemical industry, electronics, metallurgy, medical use and the like and the national defense industry. The preparation process of the carbon-carbon composite material can be understood as a densification and forming process of a carbon fiber preform, and the densification method comprises two methods of chemical vapor deposition and liquid phase impregnation. The liquid phase impregnation needs to use an impregnation container, for a hollow cylindrical part, the space utilization rate of the container is very low, for example, in the patent of a cylindrical carbon-carbon composite material body differential pressure impregnation densification device (application number: CN106083125), the impregnation method needs to use a totally-closed conventional impregnation container, in order to completely impregnate the cylindrical carbon part, an impregnant with the volume being dozens of times of that of the impregnated part is actually used, the times of repeated use of the impregnant are limited, waste liquid treatment is needed when the times of use are reached, and the method is neither environment-friendly nor economical. At the same time, in order to be able to apply pressure during impregnation, special pressurizing devices and pipe systems have to be provided, which are easily clogged and difficult to clean under the long-term action of the impregnating agent.
At present, although the pressurizing and steeping device using a pressure container and a matched pipeline system has higher single densification efficiency, the pressurizing and steeping device also has the problems of large using amount of steeping agent, more waste of the steeping agent, high maintenance cost of the pipeline and the pressurizing system and the like.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the impregnation device and the impregnation method for the cylindrical carbon-carbon composite material, and the impregnation device and the impregnation method for the cylindrical carbon-carbon composite material have the advantages of very little impregnation liquid used once, simple device operation and maintenance, convenient and quick impregnation process, economy and environmental protection.
The invention can be solved by the following technical scheme:
in order to achieve the purpose, the invention can be solved by the following technical scheme:
an impregnating device for cylindrical carbon-carbon composite material comprises
The driving roller is arranged on the device frame, is used for supporting the cylindrical part to be impregnated and can drive the cylindrical part to be impregnated to rotate around the axis of the cylindrical part to be impregnated;
the impregnation tank is used for containing impregnation liquid;
the driving device is used for providing power for the driving roller;
the device frame is used for installing the transmission roller and the driving device thereof and providing enough space for the dipping tank and the lifting platform below the transmission roller;
the lifting platform is used for controlling the lifting of the impregnation tank;
and the glue scraping brush is arranged on the device frame and is used for scraping redundant impregnating liquid on the inner surface of the cylindrical part.
Preferably, the number of the driving rollers is two, the two driving rollers are respectively arranged on two sides of the bottom plate of the cylindrical part to be impregnated, and the cylindrical wall of the cylindrical part to be impregnated is attached to the roller wall of the driving roller.
Preferably, the transmission rollers can adjust the spacing on the device frame to deal with the cylindrical parts with different specifications.
Preferably, the driving device is a variable speed motor, and the rotating speed of the driving roller can be adjusted.
Preferably, the bottom of the dipping tank is in the shape of a circular arc with a curvature larger than that of the dipped part, so that the usage amount of the dipping liquid in one time is reduced.
Preferably, the impregnation tank is provided with a liquid replenishing pipeline, so that the impregnation liquid can be replenished at any time.
Preferably, the frictioning surface of the frictioning brush can be made of brush hair or soft rubber; the glue scraping surface of the glue scraping brush is attached to the inner wall of the impregnated cylindrical part, and a guide groove is arranged on the glue scraping brush to guide the scraped impregnating liquid to flow back to the impregnating groove.
The invention also provides an impregnation method realized by the impregnation device for the cylindrical carbon-carbon composite material, which comprises the following steps:
1) lowering the lifting platform, and then adding impregnation liquid into the impregnation tank to a sufficient liquid level;
2) stably placing the cylindrical part to be impregnated on two transmission rollers to ensure that the cylindrical wall is attached to the roller wall; adjusting the position of the frictioning brush to ensure that the frictioning surface of the frictioning brush is attached to the inner wall of the cylinder;
3) the driving device rotates the driving roller, so that the cylindrical part to be impregnated rotates;
4) lifting the lifting platform to enable the impregnation tank to be lifted until the cylinder wall located below is completely immersed in the impregnation liquid;
5) after sufficient time of soaking, lowering the lifting platform to separate the soaking liquid from the cylindrical piece to be soaked; continuing to keep the driving roller rotating, so that the roller and the frictioning brush press or scrape redundant impregnation liquid on the surface to be impregnated and flow back to the impregnation tank;
6) and taking down the soaked cylindrical part, curing and airing.
Advantageous effects
The device and the method of the invention have the advantages that the liquid level depth of the impregnation tank does not need to be very high, the impregnation liquid needed by single impregnation is very little, the newly-configured impregnation liquid can be used for each impregnation instead of being repeatedly used or being placed for a plurality of times, and the process stability is more facilitated. The waste of the impregnation liquid in the use process is very little, and the method is economical and environment-friendly. The device is convenient to maintain and clean, is simple to operate, and has obvious advantages for dipping the cylindrical carbon-carbon composite material part with low density requirement. Besides, the device can also be used for the coating process of the cylindrical carbon-carbon composite material piece.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
Reference number 1 — drive roll; 2-dipping tank; 3-a driving device; 4-device frame; 5-lifting platform; 6-scraping glue brush; 7-impregnation solution; 8-cylinder
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification.
As shown in FIG. 1, an apparatus for impregnating a cylindrical carbon-carbon composite material comprises
The driving roller 1 is arranged on the device frame 4, is positioned above the dipping tank 2, is used for supporting the cylindrical part 8 to be dipped and can drive the cylindrical part 8 to be dipped to rotate around the axis of the cylindrical part 8 to be dipped;
an impregnation tank 2 for containing an impregnation liquid;
the driving device 3 is used for providing power for the driving roller 1;
the device frame 4 is used for installing the driving roller 1 and the driving device 3 thereof and providing enough space for the dipping tank 2 and the lifting platform 5 below the driving roller;
a lifting platform 5 for controlling the lifting of the dipping tank 2;
and the glue scraping brush 6 is arranged on the device frame 4 and between the two driving rollers 1 and is used for scraping off the redundant impregnating liquid on the inner surface of the cylindrical part 8. The scraping surface of the scraping brush 6 can be bristle or soft rubber; the frictioning surface of the frictioning brush 6 is attached to the inner wall of the cylinder of the dipped cylindrical part 8, and the frictioning brush 6 is provided with a diversion trench for guiding the scraped dipping liquid to flow back to the dipping tank 2.
Wherein, the transmission roller 1 can adjust the distance on the device frame to deal with the cylindrical parts with different specifications.
Wherein, the driving device 3 is a variable speed motor, which can adjust the rotating speed of the driving roller.
Wherein, the bottom of the dipping tank 2 is arc-shaped with curvature larger than that of the dipped part so as to reduce the usage amount of the dipping liquid in one time.
Wherein, the dipping tank 2 is provided with a solution supplementing pipeline which can supplement the dipping solution at any time.
The invention also provides an impregnation method realized by the impregnation device for the cylindrical carbon-carbon composite material, which comprises the following steps:
1) lowering the lifting platform 5, and then adding the impregnation liquid into the impregnation tank 2 to a sufficient liquid level;
2) the cylindrical part 8 to be impregnated is stably placed on the two transmission rollers 1, so that the cylindrical wall is attached to the roller wall; adjusting the position of the frictioning brush 6 to ensure that the frictioning surface of the frictioning brush is attached to the inner wall of the cylinder;
3) the driving roller 1 is rotated by the driving device 3, so that the cylindrical part 8 to be impregnated is rotated;
4) the lifting platform 5 is lifted, so that the dipping tank 2 is lifted to the lower cylinder wall and is completely immersed in the dipping liquid;
5) after sufficient time of impregnation, the lifting platform 5 is lowered to separate the impregnation liquid from the cylindrical part 8 to be impregnated; continuing to keep the driving roller 1 rotating, so that the roller and the frictioning brush 6 extrude or scrape the excessive impregnating liquid on the surface to be impregnated and flow back to the impregnating tank 2;
6) and taking down the impregnated cylindrical part 8, curing and airing.
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 (8)
1. A dipping device for cylindrical carbon-carbon composite materials is characterized by comprising
The driving roller is arranged on a device frame, is used for supporting the cylindrical part to be impregnated and can drive the cylindrical part to be impregnated to rotate around the axis of the cylindrical part to be impregnated;
the impregnation tank is used for containing impregnation liquid;
the driving device is used for providing power for the driving roller;
the device frame is used for installing the transmission roller and the driving device thereof and providing enough space for the dipping tank and the lifting platform below the transmission roller;
the lifting platform is used for controlling the lifting of the impregnation tank;
and the glue scraping brush is arranged on the device frame and is used for scraping redundant impregnating liquid on the inner surface of the cylindrical part.
2. The impregnation device of the cylindrical carbon-carbon composite material according to claim 1, wherein two driving rollers are arranged on two sides of the bottom plate of the cylindrical member to be impregnated respectively, and the cylindrical wall of the cylindrical member to be impregnated is attached to the roller wall of the driving rollers.
3. The apparatus for impregnating a cylindrical carbon-carbon composite material according to claim 2, wherein said driving rollers are adjustable in pitch on the frame.
4. The apparatus for impregnating a cylindrical carbon-carbon composite material according to claim 1, wherein said driving means is a variable speed motor.
5. The apparatus for impregnating a cylindrical carbon-carbon composite material as claimed in claim 1, wherein the bottom of said impregnation tank has a circular arc shape having a curvature larger than that of the cylindrical member to be impregnated.
6. The apparatus for impregnating cylindrical carbon-carbon composite material according to claim 4, wherein said impregnation tank is equipped with a fluid replacement pipe.
7. The impregnation device for the cylindrical carbon-carbon composite material according to claim 1, wherein the frictioning surface of the frictioning brush can be made of brush hair or soft rubber; the glue scraping surface of the glue scraping brush is attached to the inner wall of the impregnated cylindrical part, and a guide groove is arranged on the glue scraping brush to guide the scraped impregnating liquid to flow back to the impregnating groove.
8. Impregnation method by means of an impregnation device for cylindrical carbon-carbon composites according to any of claims 1 to 7, characterized in that it comprises the following steps:
1) lowering the lifting platform, and then adding impregnation liquid into the impregnation tank to a sufficient liquid level;
2) stably placing the cylindrical part to be impregnated on two transmission rollers to ensure that the cylindrical wall is attached to the roller wall; adjusting the position of the frictioning brush to ensure that the frictioning surface of the frictioning brush is attached to the inner wall of the cylinder;
3) the driving device rotates the driving roller, so that the cylindrical part to be impregnated rotates;
4) lifting the lifting platform to enable the impregnation tank to be lifted until the cylinder wall located below is completely immersed in the impregnation liquid;
5) after sufficient time of soaking, lowering the lifting platform to separate the soaking liquid from the cylindrical piece to be soaked; continuing to keep the driving roller rotating, so that the roller and the frictioning brush squeeze or hang off the redundant dipping liquid on the surface to be dipped and flow back to the dipping tank;
6) and taking down the soaked cylindrical part, curing and airing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011391162.4A CN112677286A (en) | 2020-12-02 | 2020-12-02 | Dipping device and dipping method for cylindrical carbon-carbon composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011391162.4A CN112677286A (en) | 2020-12-02 | 2020-12-02 | Dipping device and dipping method for cylindrical carbon-carbon composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112677286A true CN112677286A (en) | 2021-04-20 |
Family
ID=75447145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011391162.4A Pending CN112677286A (en) | 2020-12-02 | 2020-12-02 | Dipping device and dipping method for cylindrical carbon-carbon composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112677286A (en) |
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2020
- 2020-12-02 CN CN202011391162.4A patent/CN112677286A/en active Pending
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