CN115245773A - High-quality carbon nanotube reinforced aluminum matrix composite preparation device - Google Patents
High-quality carbon nanotube reinforced aluminum matrix composite preparation device Download PDFInfo
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- CN115245773A CN115245773A CN202210818144.2A CN202210818144A CN115245773A CN 115245773 A CN115245773 A CN 115245773A CN 202210818144 A CN202210818144 A CN 202210818144A CN 115245773 A CN115245773 A CN 115245773A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/40—Mixers with shaking, oscillating, or vibrating mechanisms with an axially oscillating rotary stirrer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B01F31/83—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations comprising a supplementary stirring element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
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Abstract
The invention discloses a preparation device of a high-quality carbon nano tube reinforced aluminum-based composite material, and particularly relates to the technical field of material preparation devices. Including resistance heating furnace, driving motor, the gas pitcher, charging tank and vacuum pump, be equipped with first ultrasonic generrator in the resistance heating furnace, wear to be equipped with the axis of rotation on the resistance heating furnace, be equipped with second ultrasonic generrator in the axis of rotation, the axis of rotation is equipped with first sleeve and second sleeve, first sleeve distributes and has the puddler, the second sleeve is equipped with the bellows, intercommunication gas storage tank on the bellows, be equipped with nozzle and inflater on the gas storage tank, install the pressure valve on the nozzle, the last cam that is equipped with of driving motor, be connected with the belt between actuating lever and the axis of rotation, the intercommunication has the intake pipe between gas pitcher and the axis of rotation. The technical scheme of the invention solves the problem that the existing stirring casting method can not solve the problem that the nano ceramic particles are uniformly dispersed in the aluminum matrix, and can be used for obtaining the high-quality carbon nano tube reinforced aluminum matrix composite material.
Description
Technical Field
The invention relates to the technical field of material preparation devices, in particular to a preparation device of a high-quality carbon nano tube reinforced aluminum matrix composite material.
Background
In order to meet the more severe requirements of the materials in the high-tech fields of aerospace, aviation, advanced power, power systems and the like, the research and preparation of the multifunctional composite material and the parts thereof become more and more important. Compared with homogeneous composite materials, the heterogeneous characteristics of the composite material have excellent performance under specific environments, can give full play to the unique advantages of various materials, and can overcome the respective defects. Its emergence has attracted the attention of researchers in many fields and has developed into one of the important topics in the current research field of structural materials. The nano particle reinforced aluminum-based composite material has excellent comprehensive properties such as high specific strength, high specific stiffness, high wear resistance, low thermal expansion, excellent damping performance, dimensional stability and the like, is an ideal material for lightening and improving the performance of key parts in the fields of aerospace, automobile manufacturing, electric power systems and the like, and has huge application potential and wide market prospect.
The nano reinforced aluminum-based composite material has the advantages of high specific strength, high specific rigidity and the like, and is widely applied to the fields of aerospace, rail transit, electronics and the like; the traditional stirring casting method for preparing the micron particle reinforced aluminum matrix composite has the advantages of low cost, short flow, suitability for industrial production and capability of preparing large and complex aluminum matrix composite parts, but because the surface activity of the nano particles is large and the nano particles are easy to agglomerate, the traditional stirring casting method cannot solve the technical problem that how the nano ceramic particles are added into an aluminum matrix and how the nano ceramic particles are uniformly dispersed in the aluminum matrix in the stirring casting method for preparing the aluminum matrix composite.
Disclosure of Invention
The invention aims to provide a preparation device of a high-quality carbon nano tube reinforced aluminum matrix composite, which solves the problem that the existing stirring and casting method cannot solve the problem that nano ceramic particles are uniformly dispersed in an aluminum matrix.
In order to achieve the above purpose, one technical solution of the present invention is as follows: a device for preparing a high-quality carbon nanotube reinforced aluminum matrix composite comprises a resistance heating furnace, a driving motor, a gas tank, a feeding tank and a vacuum pump, wherein a plurality of first ultrasonic generators are arranged in the resistance heating furnace, a rotating shaft with a hollow inner part is further arranged on the resistance heating furnace in a penetrating manner, a plurality of second ultrasonic generators are arranged in the rotating shaft, threads are tapped on the part, positioned in the resistance heating furnace, of the rotating shaft, a first sleeve and a second sleeve are arranged outside the rotating shaft, the first sleeve is in threaded connection with the rotating shaft, a first rotating ring is rotatably connected onto the first sleeve, a plurality of stirring rods are circumferentially distributed on the first rotating ring, each stirring rod is further rotatably connected with a second stirring rod, all the second stirring rods are commonly connected with a second rotating ring arranged on the rotating shaft, and a plurality of grooves are circumferentially formed in the top of the first sleeve; the telescopic bottom of second is equipped with a plurality of archs with the recess one-to-one, the telescopic top of second is equipped with the bellows of cladding outside the axis of rotation, bellows, second sleeve all and leave the clearance between the axis of rotation, the intercommunication has the gas storage tank of setting on resistance heating furnace on the bellows, be equipped with nozzle and inflater on the gas storage tank, install the pressure valve on the nozzle, be connected with the trachea between inflater and the gas storage tank, be equipped with the actuating lever on driving motor's the output shaft, be equipped with the cam on the actuating lever, the inflater is located the movement track of cam, be connected with the belt between actuating lever and the axis of rotation, the intercommunication has the intake pipe between gas tank and the axis of rotation, be equipped with sealed bearing between intake pipe and the axis of rotation, the jar intercommunication is in the intake pipe, the intercommunication has the blast pipe between reinforced vacuum pump and the resistance heating furnace.
Preferably, the driving rod is provided with a sliding groove, the sliding groove is internally and slidably connected with a sliding block integrally formed with the cam, a spring is connected between the sliding block and the sliding groove, and the cam is always positioned right above the nozzle.
Through the arrangement, the air storage box can push the cam to move upwards by the sprayed air when exhausting, so that the cam is separated from the inflator, the exhausting efficiency is improved, and the rising stability of the first sleeve is maintained.
Preferably, a first pressure sensor electrically connected with the driving motor is arranged on the second rotating ring, a second pressure sensor located on the motion track of the second sleeve is arranged at the bottom of the gas storage box, and the second pressure sensor is electrically connected with the driving motor.
Through the arrangement, the transmission direction of the driving motor is changed by utilizing the first pressure sensor and the second pressure sensor, so that the automatic operation is convenient to realize, the labor intensity of operators is reduced, and the stirring efficiency is improved.
Preferably, rolling balls are connected between the first stirring rod and the first rotating ring and between the second stirring rod and the second rotating ring, and the rolling balls are respectively connected to the first rotating ring or the second rotating ring in a rolling manner.
Through the arrangement, the first stirring rod and the second stirring rod can irregularly swing in the ascending or descending stirring process, so that the dispersion degree of the nano ceramic particles in the aluminum matrix is further improved.
Preferably, the composite material preparing apparatus is used to prepare a magnesium-based composite material or a zinc-based composite material.
Compared with the prior art, the beneficial effect of this scheme:
the scheme combines powder adding and stirring into a whole, and adopts the synergistic effect of high-energy ultrasound and strong mechanical stirring to prepare the high-quality nano particle reinforced aluminum matrix composite. The ceramic particles are pressurized by gas from the center of the stirring rod and sent to the first ultrasonic generator, so that the ceramic particles obtain the maximum stirring dispersion force and are uniformly stressed, and the ceramic particles are uniformly dispersed to all positions of the melt under the strong stirring generated by the rotating shaft and the center of the stirring rod. The mode of gas pressurization is adopted, and ceramic particles can be accurately and stably fed into the designated position in the melt through accurately controlling the gas pressure. The gas pressure is stable and adjustable, and is convenient to control. The gas pressurization can prevent the aluminum liquid from flowing into the rotating shaft, the scheme adopts the dynamic seal, and the gas powder feeding is realized under the rotating condition.
Drawings
FIG. 1 is a schematic view of the structure of this embodiment 1;
fig. 2 is a partial enlarged view at a in fig. 1.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: resistance heating furnace 1, driving motor 2, gas pitcher 3, reinforced jar 4, vacuum pump 5, first ultrasonic generator 6, axis of rotation 7, second ultrasonic generator 8, first sleeve 9, second sleeve 10, first rotating ring 11, first puddler 12, second puddler 13, second rotating ring 14, spin 15, first pressure sensor 16, arch 17, bellows 18, gas storage tank 19, second pressure sensor 20, nozzle 21, inflater 22, actuating lever 23, spring 24, cam 25, belt 26.
Example 1
As shown in attached figures 1 and 2, the device for preparing the high-quality carbon nanotube reinforced aluminum matrix composite comprises a resistance heating furnace 1, a driving motor 2, a gas tank 3, a feeding tank 4 and a vacuum pump 5, wherein a plurality of first ultrasonic generators 6 are arranged on the inner wall of the resistance heating furnace 1, a hollow rotating shaft 7 is arranged on the resistance heating furnace 1 in a penetrating manner, and a sealing ring is connected between the rotating shaft 7 and the resistance heating furnace 1. The inner wall of the rotating shaft 7 is provided with a plurality of second ultrasonic generators 8, a part of the rotating shaft 7, which is positioned in the resistance heating furnace 1, is tapped with threads, a first sleeve 9 and a second sleeve 10 are coated outside the rotating shaft 7, the first sleeve 9 is in threaded connection with the rotating shaft 7, the lower side of the first sleeve 9 is rotatably connected with a first rotating ring 11, a plurality of first stirring rods 12 are distributed on the periphery of the first rotating ring 11 in the circumferential direction, four stirring rods are adopted in the embodiment, the free end of each first stirring rod 12 is rotatably connected with a second stirring rod 13, each first stirring rod 12 is provided with an accommodating groove for the rotation of the second stirring rod 13, the other ends of the four second stirring rods 13 are commonly connected with a second rotating ring 14, the second rotating ring 14 is fixedly connected to the lower side of the rotating shaft 7, a gap between each first stirring rod 12 and the first rotating ring 11, a gap between each second stirring rod 13 and the second rotating ring 14 is connected with a rolling ball 15, and the rolling balls 15 are respectively connected to the first rotating ring 11 or the second rotating ring 14 in a rolling manner; the top of the second rotary ring 14 is also provided with a first pressure sensor 16 electrically connected to the driving motor 2. The top of the first sleeve 9 is also circumferentially provided with a plurality of grooves, 8 grooves are adopted in the embodiment. The bottom of the second sleeve 10 is provided with eight protrusions 17 corresponding to the grooves one by one, and each protrusion 17 can be clamped in the corresponding groove. The front side and the rear side of the second sleeve 10 are both provided with a slide bar which is connected with the resistance heating furnace 1 in a sliding way, and the resistance heating furnace 1 is provided with a second sliding chute for the slide bar to be connected in a sliding way. The top of the second sleeve 10 is provided with a corrugated pipe 18 wrapping the rotating shaft 7, gaps are reserved between the corrugated pipe 18 and the rotating shaft 7 and between the second sleeve 10 and the rotating shaft 7, the corrugated pipe 18 is communicated with a gas storage box 19 arranged at the top of the resistance heating furnace 1, the bottom of the gas storage box 19 is further provided with a second pressure sensor 20 located in the resistance heating furnace 1, the second pressure sensor 20 is located on the motion track of the second sleeve 10, and the second pressure sensor 20 is electrically connected with the driving motor 2.
The air storage tank 19 is provided with a nozzle 21 and an air pump 22, the nozzle 21 is arranged on the left side of the air storage tank 19, and the nozzle 21 is provided with a pressure valve. The pump 22 is a pump 22 in the prior art, and wedge surfaces matched with the cam 25 are arranged on the circumference of a push handle in the pump 22. Y-shaped brackets are symmetrically arranged on the inflator 22 and welded on the air storage tank 19. An air pipe is connected between an air outlet nozzle of the inflator 22 and the air storage tank 19, an output shaft of the driving motor 2 is provided with a driving rod 23, the front side and the rear side of the driving rod 23 are respectively provided with a first sliding chute, a sliding block is connected in each sliding chute in a sliding manner, and a spring 24 is connected between each sliding block and the first sliding chute; the slider is integrally formed with a cam 25 covering the driving rod 23, the cam 25 is always located right above the outlet of the nozzle 21, and the inflator 22 is located on the motion track of the cam 25. Be connected with belt 26 between actuating lever 23 and the axis of rotation 7, the gas pitcher 3 intussuseption is filled with inert gas, and the intercommunication has the intake pipe between the hollow region of gas pitcher 3 and axis of rotation 7, is equipped with sealed bearing between intake pipe and the axis of rotation 7, and charging tank 4 intercommunication is in the intake pipe, and charging tank 4 intussuseption is filled with the carbon nanotube granule, and the intercommunication has the blast pipe between vacuum pump 5 and the resistance heating furnace 1.
The working process of the scheme comprises the following steps:
s1, firstly, melting and heating a quantitative aluminum alloy ingot to 700 ℃ in a resistance heating furnace 1.
S2, modifying the aluminum liquid in the resistance heating furnace 1 in the step S1.
And S3, vacuumizing the interior of the resistance heating furnace 1 by using a vacuum pump 5 until the interior is in a low vacuum state.
S4, opening a valve on the gas tank 3, starting the driving motor 2 and the first ultrasonic generator 6, and preventing the aluminum alloy melt in the resistance heating furnace 1 from being oxidized by using inert gas after the gas tank 3 is opened, and meanwhile, preventing the melt from entering the rotating shaft 7 in the working process.
After the driving motor 2 is turned on, the driving motor 2 drives the belt 26 and the driving rod 23 to rotate through the belt 26, and the belt 26 can drive the rotating shaft 7 to rotate, so that the first stirring rod 12 and the second stirring rod 13 produce a mechanical stirring effect in the resistance heating furnace 1. After the driving rod 23 rotates, the pushing handle of the inflating cylinder 22 can be pushed by the gap of the cam 25, so that the gap in the air storage tank 19 is filled with air, the bellows 18 can be pushed to extend after a certain amount of air is reached, and the second sleeve 10 is continuously driven to move downwards after the bellows 18 extends. When the protrusion 17 at the bottom of the second sleeve 10 is clamped into the corresponding groove at the top of the first sleeve 9, the first pressure sensor 16 is triggered to rotate the output shaft of the driving motor 2 in the reverse direction, and simultaneously, the first sleeve 9 starts to move upwards due to the clamping of the protrusion 17 and the groove, and at the moment, the reliability in the moving process can be kept by means of the sliding rod. By virtue of the rolling action of the rolling balls 15, the first stirring rod 12 and the second stirring rod 13 can be irregularly agitated due to the agitation of the melt in the resistance heating furnace 1 during the ascent or descent. After the first sleeve 9 rises, the air in the corrugated pipe 18 can be pressed into the air storage tank 19 by using the second sleeve 10, meanwhile, the air pump 22 still intermittently inflates the air storage tank 19, so that the pressure in the air storage tank 19 is rapidly increased, when the pressure in the air storage tank 19 reaches the preset value of the pressure valve, the pressure valve is opened to discharge the air in the air storage tank 19 from the nozzle 21, and at the moment, the air can push the cam 25 to move upwards to be separated from the air pump 22, so that the pushing action of the cam 25 on the air pump 22 is interrupted.
When the second sleeve 10 rises and triggers the second pressure sensor 20, the output shaft of the driving motor 2 is rotated reversely again by the second pressure sensor 20, at this time, the slider drives the cam 25 to push the inflator 22 again under the action of the spring 24, and the air storage tank 19 is intermittently inflated again by the cam 25 and the inflator 22, so that the bellows 18 is extended by air, and the second sleeve 10 and the first sleeve 9 are moved downward again. When the second sleeve 10 contacts the second pressure sensor 20 on the second rotating ring 14, the output shaft of the driving motor 2 rotates reversely, thereby repeating the above-mentioned ascending process.
Through the arrangement, multi-angle and up-down reciprocating mechanical stirring is realized, and ultrasonic vibration is realized under the action of the first ultrasonic generator 6.
And S5, opening a valve of the feeding tank 4 to start feeding the carbon nanotube particles, feeding the carbon nanotube particles into the resistance heating furnace 1 under the action of inert gas, wherein the feeding amount of the carbon nanotube particles is controlled to be 60-70 g/S in the process, and the feeding time is controlled to be 2-10min.
And S6, after the feeding is finished, the resistance heating furnace 1 is vacuumized again by using the vacuum pump 5, so that the quality of the melt is improved, and the mold filling capacity of the melt is improved.
S7, starting a second ultrasonic generator 8, setting the vibration frequency to be 20-25kHz and setting the power density to be 0.3-0.35W/cm < 2 >; stirring for 10-30 min.
And S8, after stirring is finished, casting the melt in the resistance heating furnace 1 into a specific mould for forming, so as to obtain the high-quality nano particle reinforced aluminum matrix composite material with uniformly distributed nano reinforced phases.
Example 2
This example differs from example 1 only in that: the matrix of the embodiment adopts magnesium alloy ingot or zinc alloy ingot, so as to prepare the magnesium-based composite material or the zinc-based composite material.
The foregoing are merely examples of the present invention and common general knowledge of known specific structures and/or features of the schemes has not been described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. A high-quality carbon nanotube reinforcing aluminum matrix composite preparation facilities which characterized in that: the ultrasonic heating furnace comprises a resistance heating furnace, a driving motor, a gas tank, a feeding tank and a vacuum pump, wherein a plurality of first ultrasonic generators are arranged in the resistance heating furnace, a hollow rotating shaft is arranged on the resistance heating furnace in a penetrating manner, a plurality of second ultrasonic generators are arranged in the rotating shaft, threads are tapped on the part, positioned in the resistance heating furnace, of the rotating shaft, a first sleeve and a second sleeve are arranged outside the rotating shaft, the first sleeve is in threaded connection with the rotating shaft, a first rotating ring is rotatably connected to the first sleeve, a plurality of stirring rods are circumferentially distributed on the first rotating ring, each stirring rod is further rotatably connected with a second stirring rod, all the second stirring rods are commonly connected with a second rotating ring arranged on the rotating shaft, and a plurality of grooves are circumferentially formed in the top of the first sleeve; the telescopic bottom of second is equipped with a plurality ofly and the arch of recess one-to-one, the telescopic top of second is equipped with the bellows of cladding outside the axis of rotation, bellows, second sleeve all and leave the clearance between the axis of rotation, the intercommunication has the gas storage tank of setting on resistance heating furnace on the bellows, be equipped with nozzle and inflater on the gas storage tank, install the pressure valve on the nozzle, be connected with the trachea between inflater and the gas storage tank, be equipped with the actuating lever on driving motor's the output shaft, be equipped with the cam on the actuating lever, the inflater is located the movement track of cam, be connected with the belt between actuating lever and the axis of rotation, the intercommunication has the intake pipe between gas tank and the axis of rotation, be equipped with sealed bearing between intake pipe and the axis of rotation, the jar intercommunication is in the intake pipe, the intercommunication has the blast pipe between reinforced vacuum pump and the resistance heating furnace.
2. The apparatus for preparing a high quality carbon nanotube reinforced aluminum matrix composite according to claim 1, wherein: the nozzle is characterized in that a sliding groove is formed in the driving rod, a sliding block integrally formed with the cam is connected in the sliding groove in a sliding mode, a spring is connected between the sliding block and the sliding groove, and the cam is located right above the nozzle all the time.
3. The apparatus for preparing a high quality carbon nanotube reinforced aluminum matrix composite as claimed in claim 1, wherein: and a first pressure sensor electrically connected with the driving motor is arranged on the second rotating ring, a second pressure sensor positioned on the motion track of the second sleeve is arranged at the bottom of the gas storage box, and the second pressure sensor is electrically connected with the driving motor.
4. The apparatus for preparing a high quality carbon nanotube reinforced aluminum matrix composite as claimed in claim 1, wherein: rolling balls are connected between the first stirring rod and the first rotating ring and between the second stirring rod and the second rotating ring, and the rolling balls are respectively connected to the first rotating ring or the second rotating ring in a rolling manner.
5. The apparatus for preparing a high quality carbon nanotube reinforced aluminum matrix composite according to any one of claims 1 to 4, wherein: the composite material preparation device is used for preparing the magnesium-based composite material or the zinc-based composite material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210818144.2A CN115245773B (en) | 2022-07-13 | 2022-07-13 | Preparation device for carbon nano tube reinforced aluminum matrix composite |
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| CN202210818144.2A CN115245773B (en) | 2022-07-13 | 2022-07-13 | Preparation device for carbon nano tube reinforced aluminum matrix composite |
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| CN115245773A true CN115245773A (en) | 2022-10-28 |
| CN115245773B CN115245773B (en) | 2023-10-20 |
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| US20020110508A1 (en) * | 2000-12-20 | 2002-08-15 | Philippe Campo | Oxidation process of the wet oxidation or ozonization type |
| JP2009131787A (en) * | 2007-11-30 | 2009-06-18 | Kenichi Watanabe | Organic waste disposal apparatus and method for feeding air in the same |
| CN210545057U (en) * | 2019-06-20 | 2020-05-19 | 常州飞宇化工有限公司 | Stirring mechanism of glass lining reaction tank for amide production |
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| CN112877558A (en) * | 2020-12-28 | 2021-06-01 | 湖南文昌新材科技股份有限公司 | Device and method for preparing composite material by pressurizing and uniformly dispersing ceramic particles |
| CN113059191A (en) * | 2021-03-15 | 2021-07-02 | 湖北理工学院 | Preparation of particle-reinforced aluminum alloy slurry and additive forming process thereof |
| JP2022024863A (en) * | 2020-07-28 | 2022-02-09 | 樋口 進也 | Processing unit |
-
2022
- 2022-07-13 CN CN202210818144.2A patent/CN115245773B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020110508A1 (en) * | 2000-12-20 | 2002-08-15 | Philippe Campo | Oxidation process of the wet oxidation or ozonization type |
| JP2009131787A (en) * | 2007-11-30 | 2009-06-18 | Kenichi Watanabe | Organic waste disposal apparatus and method for feeding air in the same |
| CN210545057U (en) * | 2019-06-20 | 2020-05-19 | 常州飞宇化工有限公司 | Stirring mechanism of glass lining reaction tank for amide production |
| CN111672383A (en) * | 2020-06-03 | 2020-09-18 | 安徽蜂联生物科技股份有限公司 | A agitating unit for honey processing |
| JP2022024863A (en) * | 2020-07-28 | 2022-02-09 | 樋口 進也 | Processing unit |
| CN112877558A (en) * | 2020-12-28 | 2021-06-01 | 湖南文昌新材科技股份有限公司 | Device and method for preparing composite material by pressurizing and uniformly dispersing ceramic particles |
| CN113059191A (en) * | 2021-03-15 | 2021-07-02 | 湖北理工学院 | Preparation of particle-reinforced aluminum alloy slurry and additive forming process thereof |
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