CN112762703A - Heating device capable of rotating and adjusting angle and silicon carbide powder surface oxidation method - Google Patents
Heating device capable of rotating and adjusting angle and silicon carbide powder surface oxidation method Download PDFInfo
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- CN112762703A CN112762703A CN202011583079.7A CN202011583079A CN112762703A CN 112762703 A CN112762703 A CN 112762703A CN 202011583079 A CN202011583079 A CN 202011583079A CN 112762703 A CN112762703 A CN 112762703A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/06—Rotary-drum furnaces, i.e. horizontal or slightly inclined adapted for treating the charge in vacuum or special atmosphere
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/12—Rotary-drum furnaces, i.e. horizontal or slightly inclined tiltable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/26—Drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/16—Treatment involving a chemical reaction
- F27M2003/167—Oxydation
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
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- Inorganic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention provides a heating device capable of rotating to adjust an angle and a silicon carbide powder surface oxidation method, wherein the heating device comprises a horizontally arranged heating assembly, the heating assembly comprises a heating furnace body and an inner cylinder, and a heating cavity is arranged in the heating furnace body; the inner cylinder penetrates through the two opposite ends of the heating furnace body and is embedded in the heating cavity, and the inner cylinder is rotatably connected with the heating furnace body; the two opposite ends of the inner cylinder are respectively sealed; the gas supply mechanism is communicated with one end of the inner cylinder and is connected with the inner cylinder in a sealing way; the fixing mechanism is externally connected to the bottom of the heating assembly and is in rotating connection with the inner cylinder; the transmission mechanism is connected with the fixing mechanism and used for controlling the inclination angle of the fixing mechanism. The heating device is characterized in that the inner cylinder is rotatable, and the inclination angle of the fixing mechanism is controlled through the transmission mechanism, so that the powder in the inner cylinder is fully oxidized at high temperature under the action of continuous rotation and up-and-down reciprocating motion.
Description
Technical Field
The invention relates to the technical field of composite material preparation, in particular to a heating device capable of rotating and adjusting an angle and a silicon carbide powder surface oxidation method.
Background
In the preparation process of the silicon carbide particle reinforced aluminum matrix composite, the problem of wetting of the reinforced particles and the matrix metal needs to be solved, effective addition of the silicon carbide particles is ensured, and good interface combination is formed between the silicon carbide particles and the matrix metal. The wetting problem can be improved by a chemical method and a mechanical method, and the silicon carbide particles are subjected to pretreatment, particle surface coating treatment and high-temperature oxidation at present, or mechanical stirring in the process of preparing the composite material, pressure infiltration, ultrasonic stirring and other technical measures are adopted. Generally speaking, under the condition of the preparation process of the silicon carbide particle reinforced aluminum-based composite material, the oxidation treatment of the SiC particles is a better way, under the condition of obtaining a proper interface, the interface bonding force can be improved, the oxidation has a great effect on the reduction of the thermal expansion coefficient, and a layer of compact SiO is formed on the surfaces of the particles through the long-time heat preservation and oxidation treatment at high temperature2By means of SiO2The reaction with the aluminum alloy achieves the purpose of reaction wetting, can also remove moisture, dust and other impurities on the surface of the particles, and forms a layer of oxide film on the surface of the particles to promote the wetting between the particles and the matrix metal liquid. However, how to control the high-temperature oxidation degree of SiC and shorten the process flow of SiC is a technical problem at present in developing continuous production equipment.
At present, devices for oxidizing silicon carbide at high temperature have multiple types, and the main problems to be solved are to improve the high-temperature oxidation degree of SiC and how to improve the production efficiency of SiC. Current carborundum high temperature oxidation processing apparatus, it is limited to carry out high temperature oxidation's quantity to single carborundum, need carry out multichannel process, the process is more complicated, and the carborundum granule that the ectonexine distributes is heated unbalance, easily causes the oxidation degree difference great. In addition, in the prior art, in the process of preparing the silicon carbide composite material, silicon carbide high-temperature oxidation treatment equipment is complex, the reliability is poor, the working procedure is complicated, and the production cost is high.
Disclosure of Invention
The invention mainly aims to provide a heating device capable of rotating and adjusting an angle and a silicon carbide powder surface oxidation method.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a heating apparatus rotatably adjustable in angle.
This rotatable angle regulation's heating device includes:
the heating assembly is horizontally arranged and comprises a heating furnace body and an inner cylinder, and a heating cavity is formed in the heating furnace body; the inner cylinders penetrate through the two opposite ends of the heating furnace body and are embedded in the heating cavity, and the inner cylinders are rotatably connected with the heating furnace body; the two opposite ends of the inner cylinder are respectively sealed;
the gas supply mechanism is communicated with one end of the inner cylinder and is in sealed connection with the inner cylinder;
the fixing mechanism is externally connected to the bottom of the heating assembly and is in rotating connection with the inner cylinder; the transmission mechanism is connected with the fixing mechanism and used for controlling the inclination angle of the fixing mechanism.
Furthermore, one end of the inner cylinder is provided with a feeding door, and the feeding door is hermetically connected with the inner side wall of the inner cylinder; the other end of the inner cylinder is provided with a sealing block, and the sealing block is provided with an air outlet; and a filter is arranged at the air outlet.
Further, the device also comprises a rotary driving mechanism which is used for controlling the rotation of the inner cylinder;
the rotary driving mechanism comprises a first motor, a transmission belt and a coupler, the output shaft end of the first motor is in transmission connection with the coupler through the transmission belt, and the coupler is connected with one end of the inner cylinder; the first motor is used for controlling the rotation direction and the rotation speed of the inner barrel.
Further, the gas supply mechanism comprises a gas tank, a gas inlet valve and a gas inlet pipe, the gas tank is communicated with one end of the inner barrel through the gas inlet pipe, and the gas inlet pipe is connected with the inner barrel in a sealing manner through a sealing element; the air inlet valve is used for controlling the pressure of the conveying gas.
Furthermore, the fixing mechanism comprises a fixing platform, a plurality of first supporting frames and a second supporting frame, wherein one ends of the plurality of first supporting frames are respectively connected to the fixing platform, and the other ends of the plurality of first supporting frames are respectively connected to two ends of the heating furnace body;
one ends of the second support frames are respectively connected to the fixed platform; the other end is respectively connected with the two ends of the inner cylinder in a rotating way through connecting pieces.
Furthermore, drive mechanism includes first transmission assembly and second transmission assembly, first transmission assembly and second transmission assembly are connected respectively fixed platform's both ends for control fixed platform's inclination.
Furthermore, the first transmission assembly comprises a second motor and a first transmission rod, one end of the first transmission rod is in transmission connection with the output shaft end of the second motor, and the other end of the first transmission rod is connected with the fixed platform;
the second transmission assembly comprises a third motor and a second transmission rod, one end of the second transmission rod is in transmission connection with the output shaft end of the third motor, and the other end of the second transmission rod is connected with the fixed platform.
Further, inclination is 0 ~ 60.
Furthermore, a plurality of heaters are arranged on the inner side wall of the heating furnace body; the inner cylinder is a ceramic tube.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a silicon carbide powder surface oxidation method.
The oxidation method of the silicon carbide powder surface is based on the heating device capable of rotating and adjusting the angle, and comprises the following steps:
(1) adding silicon carbide powder into the inner cylinder, and heating to 800-1300 ℃;
(2) starting a gas supply mechanism, introducing gas into the inner cylinder, and carrying out oxidation treatment;
(3) controlling the inner cylinder to rotate, and keeping the rotating speed at 10-15 r/min; and simultaneously controlling the inner cylinder to do up-and-down reciprocating motion with an inclination angle of 0-60 degrees and a frequency of 0-5 times/min, wherein the frequency of the up-and-down reciprocating motion is 2 times and the time is 15-25 min.
The heating device simplifies the preparation of the silicon carbide particle reinforced aluminum matrix composite and improves the production efficiency.
According to the heating device, the rotatable inner cylinder with the air inlet and the air outlet is designed, the fixing mechanism and the transmission mechanism are arranged at the bottom of the heating device, and the inclination angle of the fixing mechanism is controlled through the transmission mechanism, so that the inclination angle of the inner cylinder is adjusted, and powder in the inner cylinder is sufficiently oxidized at high temperature under the action of continuous rotation and up-and-down reciprocating motion.
The device and the method are also suitable for the high-temperature oxidation preparation of submicron and micron SiC particles.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a heating device capable of rotating to adjust an angle according to an embodiment of the present invention.
In the figure:
1. heating the furnace body; 2. an inner barrel; 3. a feed gate; 4. an air outlet; 5. a filter; 6. a first motor; 7. a drive belt; 8. a coupling; 9. an air inlet pipe; 10. a gas tank; 11. an intake valve; 12. a seal member; 13. a fixed platform; 14. a first support frame; 15. a second support frame; 16. a connecting member; 17. a second motor; 18. a first drive lever; 19. a third motor; 20. a second transmission rod; 21. a heater; 22. a ceramic powder.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The invention discloses a heating device capable of rotating and adjusting angles, which mainly comprises a heating assembly, an air supply mechanism, a fixing mechanism and a transmission mechanism, as shown in figure 1, wherein:
the heating assembly is horizontally arranged and comprises a heating furnace body 1 and an inner cylinder 2, and a heating cavity is formed in the heating furnace body 1 and is mainly used for heating the inner cylinder 2; the inner cylinder 2 penetrates through two opposite ends of the heating furnace body 1 and is embedded in the heating cavity, so that a cavity is formed between the inner cylinder 2 and the inner side wall of the heating furnace body 1, and the inner cylinder 2 is rotatably connected with the heating furnace body 1, namely the inner cylinder 2 can rotate relative to the heating furnace body 1, so that uniform heating is ensured; the two opposite ends of the inner cylinder 2 are respectively sealed, the inner cylinder 2 is mainly used for containing ceramic powder 22 to be oxidized, and the oxidation treatment is completed in the inner cylinder 2;
the gas supply mechanism is communicated with one end of the inner cylinder 2 and is connected with the inner cylinder 2 in a sealing way, and the gas supply mechanism is mainly used for providing gas required by the oxidation process, for example, an oxygen gas tank is adopted to convey oxygen into the inner cylinder 2 and carry out high-temperature oxidation treatment on silicon carbide particles in the inner cylinder 2;
the fixing mechanism is externally connected to the bottom of the heating assembly to form effective support for the heating assembly, and is rotationally connected with the inner cylinder 2, namely the inner cylinder 2 can rotate relative to the heating furnace body 1 and the fixing assembly; the transmission mechanism is connected with the fixing mechanism and is mainly used for controlling the inclination angle of the fixing mechanism, so that the angle adjustment of the whole heating assembly is realized, and the whole heating assembly can be driven to perform multi-angle up-and-down reciprocating motion, so that the ceramic powder 22 in the inner cylinder 2 can be fully oxidized.
As another embodiment of the invention, one end of the inner cylinder 2 is provided with a feeding gate 3, as shown in FIG. 1, the feeding gate 3 is hermetically connected with the inner side wall of the inner cylinder 2, and the ceramic powder 22 is added into the inner cylinder 2 through the feeding gate 3; the end of the inner cylinder 2 opposite to the feeding door 3 is provided with a sealing block, as shown in fig. 1, the sealing block is provided with an air outlet 4, and the air outlet 4 is provided with a filter 5 for filtering and discharging air.
As another embodiment of the present invention, the device further comprises a rotation driving mechanism, wherein the rotation driving mechanism is mainly used for controlling the rotation of the inner barrel 2; the rotary driving mechanism mainly comprises a first motor 6, a transmission belt 7 and a coupling 8, wherein the first motor 6 is used for controlling the rotation direction and the rotation speed of the inner barrel 2; specifically, as shown in fig. 1, an output shaft end of the first motor 6 is in transmission connection with a coupling 8 through a transmission belt 7, the coupling 8 is connected with one end of the inner cylinder 2, and the transmission belt 7 is driven by the first motor 6 to drive the inner cylinder 2 to rotate.
As another embodiment of the present invention, the gas supply mechanism mainly comprises a gas tank 10, a gas inlet valve 11 and a gas inlet pipe 9, wherein the gas inlet valve 11 is mainly used for controlling the pressure of the conveying gas; specifically, as shown in fig. 1, the gas tank 10 communicates with one end of the inner tube 2 through the gas inlet pipe 9, and the gas inlet pipe 9 is connected with the inner tube 2 in a sealing manner through the sealing member 12, wherein the sealing member 12 may be a sealing ring, which is simple and practical.
As another embodiment of the present invention, the fixing mechanism mainly comprises a fixing platform 13, a plurality of first supporting frames 14 and a second supporting frame 15, as shown in fig. 1, the plurality of first supporting frames 14 are mainly used for forming effective support for the heating furnace body 1, specifically, one end of each of the plurality of first supporting frames 14 is connected to the fixing platform 13, and the other end of each of the plurality of first supporting frames 14 is connected to two ends of the heating furnace body 1;
the plurality of second support frames 15 are mainly used for forming effective support for the inner cylinder 2, and specifically, one ends of the plurality of second support frames 15 are respectively connected to the fixed platform 13; the other ends of the plurality of second support frames 15 are rotatably connected to both ends of the inner cylinder 2 through connection members 16, respectively.
In the embodiment of the present invention, the connecting member 16 may be a bearing, which is simple in structure; of course other connectors that can function as a rotational connection could be substituted.
As another embodiment of the present invention, a damping mechanism (not shown) may be provided on each of the first support frame 14 and the second support frame 15 to absorb vibration. The vibration mechanism can be of a spring structure and is simple and practical.
As another embodiment of the present invention, the transmission mechanism includes a first transmission assembly and a second transmission assembly, the first transmission assembly and the second transmission assembly are respectively connected to two ends of the fixed platform 13 and are used for controlling the inclination angle of the fixed platform 13, that is, one end of the fixed platform 13 can be controlled by the first transmission assembly to perform an up-and-down reciprocating motion of the inclination angle relative to the other end, the angle adjustment of the heating assembly can also be realized by the first transmission assembly and the second transmission assembly together, and the angle and the mode of the adjustment can be selected according to actual needs.
As another embodiment of the present invention, the first transmission assembly includes a second motor 17 and a first transmission rod 18, and the second transmission assembly includes a third motor 19 and a second transmission rod 20, specifically, as shown in fig. 1, one end of the first transmission rod 18 is in transmission connection with an output shaft end of the second motor 17, and the other end of the first transmission rod 18 is connected to the fixed platform 13; one end of the second transmission rod 20 is in transmission connection with the output shaft end of the third motor 19, and the other end of one end of the second transmission rod 20 is connected with the fixed platform 13; the first transmission rod 18 and the second transmission rod 20 are driven to reciprocate up and down by controlling the rotation of the second motor 17 and the third motor 19, so that the angle adjustment of the integral heating assembly is realized.
As another embodiment of the invention, the inclination angle of the up-and-down reciprocating motion is set within the range of 0-60 degrees, and can be selected according to actual requirements.
In another embodiment of the present invention, a plurality of heaters 21 are provided on the inner wall of the heating furnace body 1 to heat the inner tube 2.
As another embodiment of the present invention, the inner cylinder 2 is a ceramic tube.
The invention also discloses a silicon carbide powder surface oxidation method based on the heating device capable of rotating and adjusting the angle, and the oxidation method is explained in detail by specific embodiments below.
Example 1:
the device designed by the invention is used for carrying out high-temperature oxidation on the nano SiC particles.
Firstly, adding 10Kg of nano Si particles into a closed ceramic tube, opening a heater, opening an oxygen valve, and rapidly heating to 1000 ℃;
then starting a motor to operate, keeping the rotation speed at 10r/min, simultaneously controlling the inclination angle of the vertical reciprocating motion of the fixed platform to be kept at 0 degree and 50 degrees, namely ascending to the inclination angle of 50 degrees, then descending and resetting, and enabling two ends of the fixed platform to sequentially perform vertical reciprocating motion with the frequency of 5 times/min, wherein the frequency of one vertical reciprocating motion is 2 times, and the process lasts for 20 minutes;
and after the high-temperature oxidation is finished, closing the motor, the heating furnace and the oxygen valve, opening the furnace door, and pouring out the SiC particles which are subjected to high-temperature oxidation.
Example 2:
the device designed by the invention is used for carrying out high-temperature oxidation on the nano SiC particles.
Firstly, adding 10Kg of nano SiC particles into a closed ceramic tube, opening a heater, opening an oxygen valve, and rapidly heating to 1000 ℃;
then starting a motor to operate, keeping the rotation speed at 10r/min, and simultaneously controlling the inclination angle of the vertical reciprocating motion of the fixed platform to be kept at 0-50 degrees, namely, the vertical reciprocating motion can be carried out within the inclination angle range of 0-50 degrees, the period can be increased to 20 degrees, 30 degrees or 40 degrees, the frequency can be adjusted according to actual needs and is 5 times/min, the frequency of the vertical reciprocating motion is 2 times, and the process lasts for 20 minutes; within the range of
And after the high-temperature oxidation is finished, closing the motor, the heating furnace and the oxygen valve, opening the furnace door, and pouring out the SiC particles which are subjected to high-temperature oxidation.
It is to be noted that the term "comprises" and any variations thereof in the description and claims of the present invention is intended to cover non-exclusive inclusions, such that the inclusion of a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not explicitly listed or inherent to such elements.
In the present invention, the terms "upper", "lower", "bottom", "top", "left", "right", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the description of "first," "second," etc. referred to in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A heating device capable of rotating and adjusting an angle, comprising:
the heating device comprises a heating assembly arranged horizontally, wherein the heating assembly comprises a heating furnace body (1) and an inner cylinder (2), and a heating cavity is formed in the heating furnace body (1); the inner cylinders (2) penetrate through two opposite ends of the heating furnace body (1) and are embedded in the heating cavity, and the inner cylinders (2) are rotatably connected with the heating furnace body (1); the two opposite ends of the inner cylinder (2) are respectively sealed;
the gas supply mechanism is communicated with one end of the inner cylinder (2) and is in sealed connection with the inner cylinder (2);
the fixing mechanism is externally connected to the bottom of the heating assembly and is in rotary connection with the inner cylinder (2); the transmission mechanism is connected with the fixing mechanism and used for controlling the inclination angle of the fixing mechanism.
2. A heating device capable of rotating and adjusting an angle according to claim 1, characterized in that one end of the inner barrel (2) is provided with a feeding door (3), and the feeding door (3) is hermetically connected with the inner side wall of the inner barrel (2); the other end of the inner cylinder (2) is provided with a sealing block, and the sealing block is provided with an air outlet (4); and a filter (5) is arranged at the air outlet (4).
3. A heating device capable of rotating and adjusting an angle according to claim 1, further comprising a rotation driving mechanism for controlling the rotation of the inner cylinder (2);
the rotary driving mechanism comprises a first motor (6), a transmission belt (7) and a coupler (8), the output shaft end of the first motor (6) is in transmission connection with the coupler (8) through the transmission belt (7), and the coupler (8) is connected with one end of the inner barrel (2); the first motor (6) is used for controlling the rotation direction and the rotation speed of the inner barrel (2).
4. A heating device capable of rotating and adjusting an angle according to claim 1, wherein the air supply mechanism comprises an air tank (10), an air inlet valve (11) and an air inlet pipe (9), the air tank (10) is communicated with one end of the inner barrel (2) through the air inlet pipe (9), and the air inlet pipe (9) is connected with the inner barrel (2) in a sealing mode through a sealing piece (12); the air inlet valve (11) is used for controlling the pressure of conveying gas.
5. The heating device capable of rotatably adjusting the angle according to claim 1, wherein the fixing mechanism comprises a fixing platform (13), a plurality of first supporting frames (14) and a second supporting frame (15), one end of each of the plurality of first supporting frames (14) is connected to the fixing platform (13), and the other end of each of the plurality of first supporting frames is connected to two ends of the heating furnace body (1);
one end of each of the second support frames (15) is connected to the fixed platform (13) respectively; the other end is respectively connected with the two ends of the inner cylinder (2) in a rotating way through a connecting piece (16).
6. A heating device capable of rotating and adjusting an angle according to claim 5, wherein the transmission mechanism comprises a first transmission assembly and a second transmission assembly, the first transmission assembly and the second transmission assembly are respectively connected to two ends of the fixed platform (13) and are used for controlling the inclination angle of the fixed platform (13).
7. A heating device capable of rotating and adjusting an angle according to claim 6, characterized in that the first transmission assembly comprises a second motor (17) and a first transmission rod (18), one end of the first transmission rod (18) is in transmission connection with the output shaft end of the second motor (17), and the other end is connected with the fixed platform (13);
the second transmission assembly comprises a third motor (19) and a second transmission rod (20), one end of the second transmission rod (20) is in transmission connection with the output shaft end of the third motor (19), and the other end of the second transmission rod is connected with the fixed platform (13).
8. The heating apparatus of claim 1 or 6, wherein the inclination angle is 0 to 60 °.
9. The heating device capable of rotating and adjusting the angle according to claim 1, wherein a plurality of heaters (21) are arranged on the inner side wall of the heating furnace body (1); the inner cylinder (2) is a ceramic tube.
10. A silicon carbide powder surface oxidation method, characterized in that, based on the heating device of rotatable angle adjustment of any one of claims 1 to 9, the oxidation method comprises the steps of:
(1) adding silicon carbide powder into the inner cylinder, and heating to 800-1300 ℃;
(2) starting a gas supply mechanism, introducing gas into the inner cylinder, and carrying out oxidation treatment;
(3) controlling the inner cylinder to rotate, and keeping the rotating speed at 10-15 r/min; and simultaneously controlling the inner cylinder to do up-and-down reciprocating motion with an inclination angle of 0-60 degrees and a frequency of 1-5 times/min, wherein the frequency of the up-and-down reciprocating motion is 2 times and the time is 15-25 min.
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| CN202011583079.7A CN112762703A (en) | 2020-12-28 | 2020-12-28 | Heating device capable of rotating and adjusting angle and silicon carbide powder surface oxidation method |
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| CN202011583079.7A CN112762703A (en) | 2020-12-28 | 2020-12-28 | Heating device capable of rotating and adjusting angle and silicon carbide powder surface oxidation method |
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| CN101353220A (en) * | 2007-07-27 | 2009-01-28 | 北京有色金属研究总院 | Equipment for preparing germanium-containing infrared glass material and technological process thereof |
| CN101392987A (en) * | 2008-10-30 | 2009-03-25 | 中国船舶重工集团公司第七二五研究所 | Design and structure for controllable atmosphere rotating furnace for oxidizing albronze alloy powder |
| CN203744714U (en) * | 2014-03-15 | 2014-07-30 | 南京新月材料科技有限公司 | Multi-station rotatable high-temperature tube furnace |
| CN212021180U (en) * | 2020-04-07 | 2020-11-27 | 山东祯宇建设项目管理有限公司 | Cement agitating unit for building engineering |
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