Fiber liquid phase impregnation device
By designing an adjustable ultrasonic device and an independently temperature-controlled fiber liquid phase impregnation device, the problems of poor flexibility and inaccurate temperature control in existing equipment have been solved, realizing a highly efficient and flexible fiber liquid phase impregnation process, improving product performance and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-03-24
AI Technical Summary
Existing ultrasonic-assisted liquid phase impregnation devices are difficult to adjust in height and position once fixed, resulting in poor flexibility. Furthermore, traditional methods are difficult to precisely control temperature and atmosphere during impregnation, leading to fiber damage and poor performance.
A fiber liquid phase impregnation device was designed, comprising a pit furnace, an ultrasonic generator, a lifting platform, and a crucible. The position of the ultrasonic generator is adjusted by the lifting platform and a multi-dimensional moving device, and independent hot-melt furnace chamber and impregnation furnace chamber are set in the pit furnace to independently control the temperature, thereby achieving flexible adjustment and precise control.
It improves the flexibility of fiber liquid phase impregnation equipment and the adaptability of preparation processes, reduces fiber damage, ensures product performance and reduces energy consumption, and is suitable for the preparation of different products.
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Figure CN224025017U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fiber surface treatment equipment technical field especially, it relates to a kind of fiber liquid phase impregnation device, which is simple and convenient to use, parameter control is accurate, and the product prepared has good performance. BACKGROUND
[0002] SiC fiber reinforced aluminum matrix composites have great application prospects in aerospace, military and special equipment fields due to their excellent mechanical properties. Specifically, the material has high strength and high modulus, and can still maintain high strength and stiffness even in high temperature environment.
[0003] However, the current composite forming method of SiC fiber reinforced aluminum matrix composites is not mature. Most forming methods can only be used for forming simple components. Due to the characteristics of mixing ceramic fibers and metal matrix, the machining difficulty is greatly increased, resulting in high processing cost of SiC fiber reinforced aluminum matrix composite complex components. In the aspect of overall forming, vacuum pressure impregnation method is generally used, but this method has many problems. The structure of the preform will be damaged by the impact of high pressure gas during impregnation, which will cause the fiber to aggregate in the component, and also have adverse effects on the interface bonding effect.
[0004] Currently, ultrasonic assisted infiltration technology is generally used to solve the above problems. During the aluminum liquid impregnation process, ultrasonic waves are converted into mechanical vibrations through a specific transducer, which generates tiny bubbles and liquid flow in the aluminum liquid. On the one hand, the vibration of ultrasonic waves can break the surface tension between aluminum liquid and SiC fiber, significantly improve the wettability of aluminum liquid to SiC fiber, enhance the infiltration of aluminum liquid to fiber, and promote the infiltration of aluminum liquid to the inside of fiber. On the other hand, ultrasonic plays a role in enhancing the interface bonding. Under the influence of ultrasonic waves, aluminum liquid can uniformly coat SiC fiber, enhance the interface bonding strength between fiber and aluminum matrix, and help to improve the mechanical properties and high temperature resistance of the composite material. In addition, the vibration of ultrasonic waves can effectively prevent the aggregation of SiC fiber in the aluminum liquid, ensure the uniform dispersion of fiber, and improve the performance consistency of the composite material.
[0005] However, once the position of the existing ultrasonic assisted fiber liquid phase impregnation device is fixed, it is difficult to adjust the height and position of the ultrasonic device again during preparation and debugging according to the needs, and the flexibility of use is poor. UTILITY MODEL CONTENTS
[0006] The utility model provides a kind of fiber liquid phase impregnation device to solve the technical problems existed in the prior art mentioned in the background art.
[0007] To solve the above technical problems, the technical scheme provided by the utility model is:
[0008] A fiber liquid impregnation device comprises a muffle furnace, an ultrasonic generating device, a lifting platform and a crucible; the crucible is installed in the muffle furnace; the ultrasonic generating device is installed on the muffle furnace through the lifting platform and extends into the muffle furnace, and the distance between the ultrasonic generating device and the crucible is adjusted through the lifting platform.
[0009] In the impregnation modification process, the distance between the emitting head of the ultrasonic device and the fiber greatly affects the impregnation of the metal matrix to the fiber during the whole preparation process. The ultrasonic generating device is combined with the muffle furnace through the lifting platform, so that the height of the ultrasonic generating device can be adjusted again to adapt to the process requirements of different product preparation, and the use flexibility of the fiber liquid impregnation device is improved.
[0010] As a further preferred embodiment of the above technical solution, the lifting platform comprises a fixed support, a horizontal moving platform and a lifting machine; the ultrasonic generating device is installed on the lifting machine through the fixed support and moves along the vertical direction with the lifting machine; the lifting machine is installed on the horizontal moving platform and moves in the horizontal direction with the horizontal moving platform to adjust the relative position of the ultrasonic generating device and the muffle furnace. The horizontal moving device is added on the basis of the lifting platform, which increases the moving dimension of the ultrasonic generating device, facilitates the assembly before use and the disassembly after use of the device, and further improves the use flexibility of the device.
[0011] As a further preferred embodiment of the above technical solution, the horizontal moving platform comprises a transverse moving frame and a longitudinal moving table, the lifting machine is installed on the longitudinal moving table and moves along direction X with the longitudinal moving table, and the longitudinal moving table is installed on the transverse moving frame and moves along direction Y which is perpendicular to direction X and in the same horizontal plane as direction X.
[0012] As a further preferred embodiment of the above technical solution, the muffle furnace is provided with a hot melting furnace cavity and an impregnation furnace cavity; independent heating devices are respectively arranged in the hot melting furnace cavity and the impregnation furnace cavity, the hot melting furnace cavity is provided with a discharge port, and the discharge port of the hot melting furnace cavity is connected with the crucible through a pipeline. In the traditional fiber impregnation modification device, the metal (such as aluminum ingot) is directly heated in the crucible to form a liquid metal, and the impregnation of the fiber is also carried out in the crucible. However, in actual production process, the optimal impregnation temperature is not the same as the melting temperature of the metal. For example, during the impregnation process, harmful interfacial reactions occur between the fiber and the matrix at high temperature, so the impregnation process should be completed as quickly as possible at a lower temperature. In this scheme, the inner part of the muffle furnace body is separated to form a hot melting furnace cavity and an impregnation furnace cavity, and different temperature control systems are used to independently control the temperature in the two furnace cavities, which is conducive to accurately controlling the process parameters, effectively reducing the damage to the fiber and ensuring the optimal performance of the product, and also reducing energy consumption.
[0013] As a further preferred solution of the above technical scheme, the hot melting furnace cavity and the crucible are arranged in a staggered manner, and an inertial flow guide structure is formed between the discharge port of the hot melting furnace cavity and the feeding port of the crucible. The staggered design and the inertial flow guide structure can ensure that the molten liquid metal in the hot melting furnace cavity can smoothly enter the crucible under the action of gravity, and an additional conveying component can be omitted, thereby reducing the cost and simplifying the internal structure.
[0014] As a further preferred solution of the above technical scheme, the inertial flow guide structure is a flow guide pipe, the flow guide pipe has a tubular structure with a wide inlet and a narrow outlet, the inlet end of the flow guide pipe is connected to the discharge port of the hot melting furnace cavity without any gap, and the outlet end of the flow guide pipe is connected to the feeding port of the crucible.
[0015] As a further preferred solution of the above technical scheme, the angle between the outlet end of the flow guide pipe and the horizontal plane is 15-75°.
[0016] As a further preferred solution of the above technical scheme, the discharge port of the hot melting furnace cavity is arranged on the bottom of the hot melting furnace cavity, and the discharge port of the hot melting furnace cavity is higher than the top of the crucible.
[0017] As a further preferred solution of the above technical scheme, a furnace cover is arranged on the top of the impregnation furnace cavity, a through hole is arranged on the furnace cover for accommodating the ultrasonic wave generating device, and a detachable plug is arranged in the discharge port of the hot melting furnace cavity. The plug can prevent the metal from entering the crucible before melting, and can also be used to seal the hot melting furnace cavity after the liquid metal in the hot melting furnace cavity is emptied, so that the atmosphere in the impregnation furnace cavity is stable.
[0018] Compared with the prior art, the present application has the following beneficial effects:
[0019] The fiber liquid phase impregnation device has simple and reasonable structure, low preparation and use cost, high use flexibility, and can be adapted to different fiber impregnation modification processes and can ensure the performance of the final product. BRIEF DESCRIPTION OF DRAWINGS
[0020] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:
[0021] Figure 1 FIG. 1 is a perspective view of a fiber liquid phase impregnation device according to an embodiment of the present application;
[0022] Figure 2 FIG. 3 is a cross-sectional view of the fiber liquid phase impregnation device according to the embodiment 1 (along the axis direction of the ultrasonic wave generating device).
[0023] LEGEND:
[0024] 1. Fixed support; 2. Lifting platform; 3. Longitudinal moving platform; 4. Pit furnace; 5. Ultrasonic generating device; 6. Furnace cover; 7. Lateral moving frame; 8. Impregnation furnace cavity; 9. Fiber preform; 10. Crucible; 11. Hot melt furnace cavity; 12. Aluminum ingot; 13. Plug. Detailed Implementation
[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.
[0026] Example 1:
[0027] like Figure 1 and Figure 2 As shown ( Figure 2 (The cross-section of the transverse moving frame 7 is omitted in the text). The fiber liquid phase impregnation apparatus of this embodiment includes a pit furnace 4, an ultrasonic generator 5, a lifting platform, and a crucible 10. The crucible 10 is installed inside the pit furnace 4. The ultrasonic generator 5 is installed on the pit furnace 4 via the lifting platform and extends into the pit furnace 4 (a corrugated pipe can be installed between the pit furnace 4 and the ultrasonic generator 5 to further ensure the atmosphere inside the pit furnace 4), and the distance between the ultrasonic generator 5 and the crucible 10 is adjusted via the lifting platform.
[0028] In this embodiment, the lifting platform includes a fixed support 1, a horizontal moving platform, and a lifting machine 2; the ultrasonic generator 5 is mounted on the lifting machine 2 via the fixed support 1 and moves vertically with the lifting machine 2; the lifting machine 2 is mounted on the horizontal moving platform and moves horizontally with the horizontal moving platform to adjust the relative position of the ultrasonic generator 5 and the pit furnace 4.
[0029] In this embodiment, the horizontal moving platform includes a transverse moving frame 7 and a longitudinal moving platform 3. The elevator 2 is installed on the longitudinal moving platform 3 and moves along the direction X with the longitudinal moving platform 3. The longitudinal moving platform 3 is installed on the transverse moving frame 7 and moves along the direction Y with the transverse moving frame 7 in the same horizontal plane as the direction X and perpendicular to the direction Y. The transverse moving frame 7 is straddling the pit furnace 4 and can be moved by means of pulleys and rails. The longitudinal moving platform 3 can be moved by being embedded in the groove provided on the top of the transverse moving frame 7.
[0030] In this embodiment, the pit furnace 4 is provided with a hot-melting furnace chamber 11 and an impregnation furnace chamber 8; the hot-melting furnace chamber 11 and the impregnation furnace chamber 8 are respectively provided with independently controlled heating devices, the hot-melting furnace chamber 11 has a discharge port, and the discharge port of the hot-melting furnace chamber 11 is connected to the crucible 10 through a pipe.
[0031] In this embodiment, the discharge port of the hot melt furnace chamber 11 is located at the bottom of the hot melt furnace chamber 11, and the discharge port of the hot melt furnace chamber 11 is higher than the top of the crucible 10.
[0032] The outlet of the hot melting furnace cavity 11 is connected with the inlet of the crucible 10 through a flow guide pipe which has a tubular structure with wide inlet and narrow outlet. In this embodiment, the outlet of the flow guide pipe forms an angle of 15° with the horizontal plane.
[0033] In this embodiment, the top of the impregnation furnace cavity 8 is provided with a furnace cover 6, and a through hole is formed in the furnace cover 6 for accommodating the ultrasonic wave generating device 5. A detachable plug 13 is installed in the outlet of the hot melting furnace cavity 11.
[0034] The fiber liquid impregnation device of the present application is used to impregnate and modify the fiber (for example, SiC fiber preform is impregnated with aluminum liquid), which includes the following steps:
[0035] (1) Adjust the horizontal moving frame 7 and the longitudinal moving table 3 to change the horizontal position of the ultrasonic wave generating device 5, so that the ultrasonic wave generating device 5 installed on the fixed support 1 is located directly above the origin of the coordinate axis of the hot melting furnace cavity 11.
[0036] (2) Start the elevator 2 to lower the height of the fixed support 1, so that the front end of the emission head of the ultrasonic wave generating device 5 is aligned with the upper edge of the shaft furnace 4, and the height is set to zero. Then, the emission head of the ultrasonic wave generating device 5 is raised to be completely above the furnace cover 6.
[0037] (3) Put 2 kg of 1060 aluminum alloy ingot into the crucible 10 in the hot melting furnace cavity 11, and plug the plug 13 at the outlet. Place the mold loaded with the fiber preform 9 in the crucible 10, and align the origin of the coordinate axis of the hot melting furnace cavity 11.
[0038] (4) Introduce nitrogen into the hot melting furnace cavity 11, set the heating rate and temperature of the hot melting furnace cavity 11, and melt the aluminum ingot 12.
[0039] (5) Remove the plug 13, and the aluminum liquid in the hot melting furnace cavity 11 flows into the crucible 10 in the lower impregnation furnace cavity 8, immersing the fiber preform 9. Control the elevator 2 to make the emission head of the ultrasonic wave generating device 5 located at a position 10 mm above the fiber preform 9. Turn on the power supply of the ultrasonic wave generating device 5, preheat and start the emission button of the ultrasonic wave generating device 5.
[0040] (6) When the fiber preform 9 is completely impregnated, control the elevator 2 to raise the emission head of the ultrasonic wave generating device 5, open the furnace cover 6, and take out the fiber preform 9 and the mold. After the aluminum liquid completely solidifies, the fiber preform 9 is taken out from the mold, and the impregnation modification of the SiC fiber and the preparation of the fiber reinforced aluminum matrix composite material are completed.
[0041] The above merely is the preferred embodiment of the present application, and is not used to limit the present application, and the present application can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application should be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiment. For the person skilled in the art, the improvement and change obtained without departing from the technical concept of the present application should be regarded as the protection scope of the present application.
Claims
1. A fiber liquid phase impregnation apparatus, characterized in that, It includes a pit furnace (4), an ultrasonic generator (5), a lifting platform, and a crucible (10); the crucible (10) is installed inside the pit furnace (4); the ultrasonic generator (5) is installed on the pit furnace (4) via the lifting platform and extends into the pit furnace (4), and the distance between the ultrasonic generator (5) and the crucible (10) is adjusted via the lifting platform.
2. The fiber liquid phase impregnation apparatus according to claim 1, characterized in that, The lifting platform includes a fixed bracket (1), a horizontal moving platform and a lift (2); the ultrasonic generator (5) is installed on the lift (2) through the fixed bracket (1) and moves vertically with the lift (2); the lift (2) is installed on the horizontal moving platform and moves horizontally with the horizontal moving platform to adjust the relative position of the ultrasonic generator (5) and the pit furnace (4).
3. The fiber liquid phase impregnation apparatus according to claim 2, characterized in that, The horizontal moving platform includes a transverse moving frame (7) and a longitudinal moving platform (3). The elevator (2) is installed on the longitudinal moving platform (3) and moves along the direction X with the longitudinal moving platform (3). The longitudinal moving platform (3) is installed on the transverse moving frame (7) and moves along the direction Y with the transverse moving frame (7) in the same horizontal plane as the direction X and perpendicular to the direction X.
4. The fiber liquid phase impregnation apparatus according to any one of claims 1-3, characterized in that, The well furnace (4) is provided with a hot melt furnace chamber (11) and an impregnation furnace chamber (8); the hot melt furnace chamber (11) and the impregnation furnace chamber (8) are respectively provided with independently controlled heating devices. The hot melt furnace chamber (11) has a discharge port, and the discharge port of the hot melt furnace chamber (11) is connected to the crucible (10) through a pipe.
5. The fiber liquid phase impregnation apparatus according to claim 4, characterized in that, The hot melt furnace cavity (11) and the crucible (10) are arranged in a staggered manner, and an inertial flow guiding structure is formed between the outlet of the hot melt furnace cavity (11) and the inlet of the crucible (10).
6. The fiber liquid phase impregnation apparatus according to claim 5, characterized in that, The inertial flow guiding structure is a flow guiding pipe, which is a tubular structure with a wide inlet and a narrow outlet. The inlet end of the flow guiding pipe is seamlessly connected to the outlet of the hot melt furnace cavity (11), and the outlet end of the flow guiding pipe is connected to the inlet of the crucible (10).
7. The fiber liquid phase impregnation apparatus according to claim 6, characterized in that, The angle between the discharge end of the guide pipe and the horizontal plane is 15~75°.
8. The fiber liquid phase impregnation apparatus according to claim 6, characterized in that, The outlet of the hot melt furnace cavity (11) is located at the bottom of the hot melt furnace cavity (11), and the outlet of the hot melt furnace cavity (11) is higher than the top of the crucible (10).
9. The fiber liquid phase impregnation apparatus according to claim 4, characterized in that, The top of the impregnation furnace chamber (8) is provided with a furnace cover (6), and the furnace cover (6) has a through hole for accommodating the ultrasonic generator (5) to pass through; a removable plug (13) is installed in the discharge port of the hot melt furnace chamber (11).