CN109682202A - A kind of ultrasonic wave added direct current sintering furnace and sintering method - Google Patents
A kind of ultrasonic wave added direct current sintering furnace and sintering method Download PDFInfo
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- CN109682202A CN109682202A CN201910091806.9A CN201910091806A CN109682202A CN 109682202 A CN109682202 A CN 109682202A CN 201910091806 A CN201910091806 A CN 201910091806A CN 109682202 A CN109682202 A CN 109682202A
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- sintering
- control centre
- furnace
- ultrasonic
- pressure
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Classifications
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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
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
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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
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
-
- 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
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/18—Arrangement of controlling, monitoring, alarm or like devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
-
- 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
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B2005/062—Cooling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
- F27D2009/0013—Cooling of furnaces the cooling medium being a fluid other than a gas the fluid being water
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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
- F27M2003/04—Sintering
Abstract
The present invention relates to a kind of ultrasonic wave added direct current sintering furnace and sintering methods, it is characterised in that: comprising: furnace body, ultrasonic control system, DC current control system, uniaxial pressure control system and sintering control centre；Uniaxial pressure control system includes pressure generating unit interconnected and pressure control portion, and pressure generating unit is arranged in furnace body, for unidirectionally being pressurizeed to setting in the intracorporal material to be sintered of furnace；Pressure control portion is connected with sintering control centre, controls for the pressure to pressure generating unit；Ultrasonic control system is connected with pressure generating unit, applies mechanical oscillation signal by pressure generating unit and acts on material to be sintered；DC current generator is connected with the pressure generating unit of control pressurer system and sintering control centre respectively, treats agglomerated material and applies DC current.The present invention can be used in the sintering of various advanced materials.
Description
Technical field
The present invention relates to a kind of sintering furnace and sintering methods, especially with regard to a kind of ultrasonic wave added direct current sintering furnace and sintering
Method.
Background technique
The densification sintering of the advanced materials such as high-performance ceramic, hard alloy is the key that scientific and technical in its preparation process
One of problem.By taking advanced structural ceramic material as an example, sintering can promote stomata to be discharged, and improve intergranular bond strength, make
Ceramic particle densification is finally obtained close to theoretical density and with the dense ceramic material of outstanding mechanical property.
Ceramic material usually has high theoretical strength, such as the theoretical strength range of aluminium oxide is 38~76GPa；Carbon
The theoretical strength of SiClx is 44~88GPa.However, it is far not achieved in the actual strength of ceramic material obtained by existing sintering method
Theoretical strength: the actual strength of usual polycrystalline ceramics is only about the 1/500~1/50 of theoretical strength.Ceramic material actual strength is not
It is enough ideal be on the one hand because there are manufacturing defect and fault of construction, such as stomata field trash, crackle, reunion in material, thus
Stress is caused to be concentrated, the strength of materials reduces；It on the other hand is because ceramic crystalline grain is excessive.According to Hall-Petch formula, material
Crystal grain is bigger, then intensity is lower.Sintering method common at present mainly has normal pressure-sintered, gas pressure sintering, hot pressed sintering, electric discharge etc.
Gas ions are sintered (SPS) etc..It is normal pressure-sintered not apply additional pressure to material during the sintering process, i.e., at atmosheric pressure into
Row sintering；Gas pressure sintering then makes to be sintered in the protective atmosphere of material under a certain pressure；With normal pressure-sintered and gas pressure sintering
It compares, hot pressed sintering applies the pressure of tens of megapascal in sintering by pressure head to material, to improve the sintering driving of material
Power promotes stomata to be discharged and crystal grain is inhibited to grow up.Usually, hot pressed sintering material is more caused than normal pressure and air pressure agglomerated material
It is close, crystal grain is smaller, mechanical property is more preferable, but since material internal is still with the presence of significantly holding one's breath hole, performance is improved the standard
It is still not ideal enough.Discharge plasma sintering refers to during the sintering process without external heat source, but is directly passed through pulse electricity to material
Stream, makes its heating by material heating power itself, and use the power on the plasma and activating effect acceleration of sintering of generation, this
Method can shorten sintering time, improve sintering efficiency, however since Current Heating usually makes temperature field in sample uneven
It is even, therefore large scale sample can not be sintered；Structure is complicated for discharge plasma agglomerating plant simultaneously, and cost is very high, is not suitable for work
Industry large-scale application.It is lasting that electric discharge fire is provided if the pulse current in sintering process can be changed to constant DC current
Flower, then can be improved the Uniformity of Temperature Field of agglomerated material, to improve sintered body performance.
Ultrasonic wave is widely used in fields such as modern military, industry, lives, when ultrasonic wave and medium interact
When, it can be with the high-frequency vibration of excitation material each point, to cause various unique physical chemistry effects.For example, ultrasonic wave passes through
Adjoint cavitation effect can produce localized hyperthermia, high pressure and strong shock wave when liquid；Ultrasonic wave acts on material
Material can be promoted to generate strong high-frequency vibration when material, promote the processes such as diffusion, the dissolution of substance.It is envisioned that if energy
Ultrasonication is introduced in material sintering process, further stomata can be promoted to be discharged by the strenuous exercise of particle to be sintered
And crystal grain is inhibited to grow up.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of no external heat sources, by DC current to various sizes
Material to be sintered be sintered, and can synchronize during the sintering process to material carry out ultrasonic wave added processing, promote stomata row
Out, it significantly inhibits crystal grain to grow up, sintered body consistency is improved, to further increase the ultrasound of existing various advanced material performances
Assist direct current sintering furnace and sintering method.
To achieve the above object, the present invention takes following technical scheme: a kind of ultrasonic wave added direct current sintering furnace comprising:
Furnace body, ultrasonic control system, DC current control centre, uniaxial pressure control system and sintering control centre；The unidirectional pressure
Force control system includes pressure generating unit interconnected and pressure control portion, and the pressure generating unit is arranged in the furnace body
It is interior, for unidirectionally being pressurizeed to the intracorporal mold for being clamped with material to be sintered of the furnace is arranged in；The pressure control portion
It is connected with the sintering control centre, the pressure for generating to the pressure generating unit controls；The ultrasound control
System is connected with the pressure generating unit, and applies mechanical oscillation signal by the pressure generating unit and act on material to be sintered
Material；The DC current generator is connected with the pressure generating unit of the uniaxial pressure control system and sintering control centre respectively
It connects, DC current is applied to the material to be sintered.
Further, the pressure generating unit includes seaming chuck and push-down head；The seaming chuck is fixed at the furnace
In vivo, the seaming chuck upper end after being pierced by the top of the furnace body with the ultrasonic control system by being connected；The push-down head upper end
Extend into the furnace body by the bottom of furnace body, be on same axis with the seaming chuck, and the push-down head at the top of with
The space for placing material to be sintered is reserved between the seaming chuck bottom；The pressure control portion includes hydraulic cylinder and pressure control
Center processed, the hydraulic cylinder are arranged outside the furnace body, and one end is connected with the push-down head bottom, the other end and the pressure
Power control centre is connected, and the pressure control centre is connected with the sintering control centre.
Further, the ultrasonic control system includes ultrasonic amplitude transformer, ultrasonic transducer, the ultrasonic wave hair being sequentially connected
Raw device and ultrasonic control centre；It is connect at the top of the ultrasonic amplitude transformer other end and the seaming chuck, the ultrasound control centre
Input terminal connect with the sintering control centre；The sintering control centre requires to control ultrasonic wave according to sintering process to be believed
Number send the ultrasonic control centre to, the ultrasound control centre is according to the signal control supersonic generator received
It generates the ultrasonic wave of specific frequency and exports to the ultrasonic transducer；The ultrasonic transducer is stretched according to piezoelectric effect or mangneto
The ultrasonic electrical signal received is changed into mechanical oscillation signal and exported to the ultrasonic amplitude transformer by contracting effect；The ultrasound
Amplitude transformer is by the mechanical oscillation signal Amplitude amplification received and realizes cumulative, the mechanical oscillation enhanced through the ultrasonic amplitude transformer
Signal acts on material to be sintered by the seaming chuck.
Further, the input terminal of the DC current control centre connects the sintering control centre, the direct current
The output end at flow control center is separately connected seaming chuck and push-down head in the uniaxial pressure control system, and the direct current
The junction periphery of the output end at flow control center and the seaming chuck and push-down head is surrounded with flexible insulating layer.
Further, the operating voltage of the DC current control centre is 0~1000V, the output electric current of generation is 0~
5000A。
Further, the ultrasonic wave added direct current sintering furnace further includes atmosphere control system, the atmosphere control system packet
Include air inlet/outlet and atmosphere control centre；Described air inlet/outlet one end is connected to the furnace interior, the other end and the atmosphere
Control centre's connection；The control climate center is connect with the sintering control centre, is sent according to the sintering control centre
Vacuumize signal or be passed through gas signal, the operation of pre-set gas is vacuumized or is passed through to furnace interior.
Further, the ultrasonic wave added direct current sintering furnace further includes cooling water recirculation system；The cooling water cyclic system
System includes water inlet, water outlet, cooling water circulation channel and cooling water control center；The water inlet is located at the furnace body bottom
Portion, the water outlet are located at the top of the furnace body, and the cooling water circulation channel is set to the furnace interior, and with it is described into
The mouth of a river is connected to water outlet；The cooling water control center is connect with the sintering control centre, according in sintering control
The cooling water cycle signal that the heart is sent, cooling water circulating in the cooling water circulation channel.
Further, the ultrasonic wave added direct current sintering furnace further includes temp measuring system, and the temp measuring system includes temperature measuring window
Mouth and thermometric center；The thermometric window is located in the middle part of the furnace body；The thermometric center passes through the thermometric windows detecting institute
The temperature of material to be sintered in furnace body is stated, and is sent to the sintering control centre.
Further, the furnace body includes bolted upper bell, furnace body and lower bell.
Another aspect of the present invention is to provide a kind of sintering method of ultrasonic wave added direct current sintering furnace comprising following step
It is rapid:
1) confirmation each component working condition of sintering furnace is normal, and opens lower bell, and the mold equipped with material to be sintered is put
Between seaming chuck and push-down head, lower bell is closed；
2) it is required according to sintering process, sintering control centre vacuumizes furnace interior by atmosphere control system, and leads to
Enter protective atmosphere；
3) ultrasonic control system material to be sintered intracorporal to furnace is controlled by sintering control centre to carry out at ultrasonic vibration
Reason；
4) electric current controlled between seaming chuck and push-down head by control DC current control centre, sintering control centre is strong
Degree, makes material warms to be sintered；
5) uniaxial pressure control system is controlled by sintering control centre and controls pressure suffered by material to be sintered；
6) require adjustment above-mentioned 3)~5 according to sintering process) sequencings of three steps and duration, make material to be sintered
Expect ultrasonic field, DC current, uniaxial pressure coupling under be sintered；It is monitored during the sintering process by temp measuring system
In-furnace temperature；
7) ultrasonic control system, DC current control centre are closed after being sintered, and control uniaxial pressure control system
Slow removal pressure, then promotes descent of temperature by cooling water recirculation system；
8) in the complete removal of pressure, and furnace temperature is cooled to room temperature, and is opened lower bell, is taken out sintered body；To furnace interior into
Row cleaning, closes each component, and sintering is completed.
The invention adopts the above technical scheme, which has the following advantages: 1, the present invention is due to can be in sintering process
In synchronously treat agglomerated material and be ultrasonically treated, compared with existing sintering technology, can by reinforcing particle re-arrangement, into
One step promotes stomata discharge, and when inhibiting high temperature sintering crystal grain roughening, prepare that consistency is higher, and crystal grain is smaller, performance mentions
The advanced material risen.2, the present invention is sintered due to treating agglomerated material using DC current, is not introduced during the sintering process
External heat source, thus can further shorten sintering time, sintering efficiency is improved, while greatly reducing the energy in sintering process
Consumption is suitble to industrialization large-scale application.3, the present invention is due at home and abroad taking the lead in using ultrasonic field, electric field and three, field of force coupling
The advanced sintering technology closed, can prepare the same of the performance advanced material more excellent than existing various sintering technology products
When, promote the discovery and solution of various new phenomenons, new problem, reinforces research and understanding to advanced material sintering theory.To sum up
Described, the present invention can be widely applied in a series of sintering process of high-performance advanced materials.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ultrasonic wave added direct current sintering furnace of the present invention.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the present invention provides a kind of ultrasonic wave added direct current sintering furnace comprising furnace body 1, uniaxial pressure control system
System 2, ultrasonic control system 3, DC current control centre 4 and sintering control centre 5；It is sintered control centre 5 and uniaxial pressure control
System 2 processed, ultrasonic control system 3, DC current control centre 4 are connected and control each system, and then to being arranged in furnace
Material to be sintered in body 1 applies ultrasonic field, DC current and uniaxial pressure, to realize the sintering of high-performance advanced material.
Uniaxial pressure control system 2 includes seaming chuck 21, push-down head 22, hydraulic cylinder 23 and pressure control centre 24.Upper pressure
First 21 are fixed in furnace body 1, and the upper end at the top of furnace body 1 by being pierced by and being connected with ultrasonic control system 3；22 upper end of push-down head
It is extend into furnace body 1 by 1 bottom of furnace body, is on same axis with seaming chuck 21, and 22 top of push-down head and 21 bottom of seaming chuck
The space for placing the mold 6 for clamping material to be sintered is reserved between portion；22 lower end of push-down head is by being arranged in outside furnace body 1
Hydraulic cylinder 23 is connected with pressure control centre 24, and pressure control centre 24 is connected with sintering control centre 5, is sintered control centre 5
It is required for uniaxial pressure signal to be sent to pressure control centre 24 according to sintering process, pressure control centre 24 is single based on the received
Uniaxial pressure is applied to material to be sintered by push-down head 22 to pressure signal control hydraulic cylinder 23, makes material to be sintered unidirectional
It is sintered under the action of pressure.
Ultrasonic control system 3 includes ultrasonic amplitude transformer 31, ultrasonic transducer 32,33 and of supersonic generator being sequentially connected
Ultrasonic control centre 34.Wherein, it connects, surpasses at the top of 31 other end of ultrasonic amplitude transformer and the seaming chuck 21 by being pierced by inside furnace body 1
The input terminal at acoustic control center 34 is connect with sintering control centre 5；Control centre 5 is sintered to be required according to sintering process by ultrasonic wave
Control signal sends ultrasonic control centre 34 to, and ultrasonic control centre 34 controls supersonic generator 33 according to the signal received
It generates the ultrasonic electrical signal of specific frequency and exports to ultrasonic transducer 32；Ultrasonic transducer 32 is according to piezoelectric effect or mangneto
The ultrasonic electrical signal received is changed into mechanical oscillation signal and exported to ultrasonic amplitude transformer 31 by flex effect；Ultrasonic amplitude of fluctuation
Bar 31 is by the mechanical oscillation signal Amplitude amplification received and realizes cumulative；The mechanical oscillation letter enhanced by ultrasonic amplitude transformer 31
Number material to be sintered is acted on by seaming chuck 21, be sintered material to be sintered can under the action of ultrasonic field simultaneously.
The input terminal connection sintering control centre 5 of DC current control centre 4, the output end of DC current control centre 4
Connect seaming chuck 21 and push-down head 22, and the connection of the output end of DC current control centre 4 and seaming chuck 21 and push-down head 22
Place periphery is surrounded with flexible insulating layer；Sintering control centre 5 requires to send to DC current control signal according to sintering process
DC current control centre 4；DC current control centre 4 passes through 21 He of seaming chuck according to the DC current control signal received
Push-down head 22 is applied across the DC current of mold or material to be sintered, makes material to be sintered can be simultaneously in the effect of DC current
Under be sintered.
In above-described embodiment, ultrasonic wave added direct current sintering furnace further includes atmosphere control system 7, and atmosphere control system 7 includes
Air inlet/outlet 71 and atmosphere control centre 72；It is connected to inside 71 one end of air inlet/outlet and furnace body 1, the other end and control climate center
72 connections；Control climate center 72 is connect with sintering control centre 5；It is sintered control centre 5 and requires to take out very according to sintering process
Spacing wave is passed through gas signal and sends control climate center 72 to, control climate center 72 according to the signal received by into
Operation of the venthole 71 to being vacuumized or being passed through specific gas inside furnace body 1, makes material to be sintered in vacuum environment or guarantor
It is sintered under shield atmosphere.
In above-described embodiment, ultrasonic wave added direct current sintering furnace further includes cooling water recirculation system 8, cooling water recirculation system 8
Including water inlet 81, water outlet 82, cooling water circulation channel 83 and cooling water control center 84；Water inlet 81 is located at 1 bottom of furnace body
Portion, water outlet 82 are located at 1 top of furnace body, and cooling water circulation channel 83 is set to 1 inner wall of furnace body；Water inlet 81 and water outlet 82 are same
When connect with cooling water control center 84, cooling water control center 84 with sintering control centre 5 connect；It is sintered 5, control centre
It requires to send cooling water cycle signal to cooling water control center 84 according to sintering process, cooling water control center 84 is according to receiving
Circulation flow rate of the Signal Regulation cooling water in cooling water circulation channel 83.
In above-described embodiment, ultrasonic wave added direct current sintering furnace further includes temp measuring system 9, and temp measuring system 9 includes thermometric window
91 and thermometric center 92；Thermometric window 91 is located at 1 middle part of furnace body, and thermometric window 91 is connect with thermometric center 92, thermometric center 92
Control centre 5 connect with sintering；During the sintering process, the temperature on 6 surface of mold is detected at thermometric center 92 by thermometric window 91,
And it is transferred to sintering control centre 5；It is sintered control centre 5 and unidirectional pressure is adjusted according to the surface temperature signal of the mold 6 received
The working condition of Force control system 2, ultrasonic control system 3 and DC current control centre 4.
In above-described embodiment, furnace body 1 includes bolted upper bell 11, lower bell 12 and furnace body 13.
In above-described embodiment, ultrasonic wave added direct current sintering furnace further includes grate 10, and grate 10 plays support, fixation to furnace body 1
Effect.
In above-described embodiment, the operating voltage of DC current control centre 4 is about 0~1000V, and the output electric current of generation is about
For 0~5000A.
The present invention also provides a kind of sintering methods of ultrasonic wave added direct current sintering furnace, comprising the following steps:
1) checking ensures that each component working condition of sintering furnace is normal, opens lower bell 12, the mould of material to be sintered will be housed
Tool 6 is placed between seaming chuck 21 and push-down head 22, closes lower bell 12；
When using this sintering furnace, before being put into material to be sintered, lower bell 12 is opened.Deployment method is the company of unloading
Lower bell 12 is connect with after the bolt of furnace body 13, lower bell 12, push-down head 22 and hydraulic cylinder 23 are in pressure control centre 24
It is moved down together under effect.Then material to be sintered is placed in mold 6, is closed in 22 upper end of push-down head by the lower end cap of mold 6
Lower bell 13 is closed, that is, bell 12, push-down head 22 and hydraulic cylinder 23 is descended to move up under the action of pressure control centre 24, and even
Connect the bolt between lower bell 12 and furnace body 13；
2) required according to sintering process, sintering control centre 5 by atmosphere control system 7 to being vacuumized inside furnace body 1, and
It is passed through protective atmosphere；
3) ultrasonic control system 3 is controlled by sintering control centre 5 and ultrasonic vibration is carried out to the material to be sintered in furnace body 1
Processing；
4) DC current control centre 4 is controlled by sintering control centre 5 to control between seaming chuck 21 and push-down head 22
Current strength makes material warms to be sintered；
5) uniaxial pressure control system 2 is controlled by sintering control centre 5 and controls pressure suffered by material to be sintered；
6) adjustment above-mentioned 3) 4) 5) sequencing of three steps and duration are required according to sintering process, makes material to be sintered
Expect ultrasonic field, DC current, uniaxial pressure coupling under be sintered；It is supervised during the sintering process by temp measuring system 9
Control in-furnace temperature；
7) supersonic generator 33, DC current control centre 4 are closed after being sintered, and operate uniaxial pressure control system
2 slow removal pressure, and descent of temperature is promoted by cooling water recirculation system 8；
8) in the complete removal of pressure, and furnace temperature is cooled to room temperature, and is opened lower bell 12, is taken out sintered body；Inside furnace body 1
It is cleared up, closes each system, sintering is completed.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type and manufacture craft etc. are all
It can be varied, all equivalents and improvement carried out based on the technical solution of the present invention should not exclude
Except protection scope of the present invention.
Claims (10)
1. a kind of ultrasonic wave added direct current sintering furnace, it is characterised in that: comprising: which furnace body, ultrasonic control system, DC current control
Center, uniaxial pressure control system and sintering control centre；
The uniaxial pressure control system includes pressure generating unit interconnected and pressure control portion, and the pressure generating unit is set
It sets in the furnace body, for unidirectionally being pressurizeed to the intracorporal mold for being clamped with material to be sintered of the furnace is arranged in；Institute
It states pressure control portion to be connected with the sintering control centre, the pressure for generating the pressure generating unit controls；
The ultrasonic control system is connected with the pressure generating unit, and applies mechanical oscillation signal by the pressure generating unit
And act on material to be sintered；
The DC current control centre respectively with the pressure generating unit of the uniaxial pressure control system and sintering control centre
It is connected, DC current is applied to the material to be sintered.
2. a kind of ultrasonic wave added direct current sintering furnace as described in claim 1, it is characterised in that: the pressure generating unit includes upper
Pressure head and push-down head；
The seaming chuck is fixed in the furnace body, and the seaming chuck upper end after being pierced by the top of the furnace body with described by surpassing
Acoustic control system is connected；
The push-down head upper end is extend into the furnace body by the bottom of furnace body, is on same axis with the seaming chuck,
And the space for placing material to be sintered is reserved between the seaming chuck bottom at the top of the push-down head；
The pressure control portion includes hydraulic cylinder and pressure control centre, and the hydraulic cylinder is arranged outside the furnace body, one
End is connected with the push-down head bottom, and the other end is connected with the pressure control centre, the pressure control centre and the burning
Control centre is tied to be connected.
3. a kind of ultrasonic wave added direct current sintering furnace as claimed in claim 2, it is characterised in that: the ultrasonic control system includes
Ultrasonic amplitude transformer, ultrasonic transducer, supersonic generator and the ultrasonic control centre being sequentially connected；
It is connect at the top of the ultrasonic amplitude transformer other end and the seaming chuck, the input terminal of the ultrasound control centre and the burning
Tie control centre's connection；
The sintering control centre requires to send ultrasonic wave control signal into the ultrasonic control centre to according to sintering process,
The ultrasound control centre controls the ultrasonic wave that the supersonic generator generates specific frequency according to the signal received
And it exports to the ultrasonic transducer；
The ultrasonic electrical signal received is changed into machinery according to piezoelectric effect or magnetostrictive effect by the ultrasonic transducer
Vibration signal is simultaneously exported to the ultrasonic amplitude transformer；
The ultrasonic amplitude transformer is by the mechanical oscillation signal Amplitude amplification received and realizes cumulative, increases through the ultrasonic amplitude transformer
Strong mechanical oscillation signal acts on material to be sintered by the seaming chuck.
4. a kind of ultrasonic wave added direct current sintering furnace as claimed in claim 2, it is characterised in that: the DC current control centre
Input terminal connect the sintering control centre, the output end of the DC current control centre is separately connected the uniaxial pressure
Seaming chuck and push-down head in control system, and the output end of the DC current control centre and the seaming chuck and push-down head
Junction periphery be surrounded with flexible insulating layer.
5. a kind of ultrasonic wave added direct current sintering furnace as claimed in claim 4, it is characterised in that: the DC current control centre
Operating voltage be 0~1000V, the output electric current of generation is 0~5000A.
6. a kind of ultrasonic wave added direct current sintering furnace as described in claim 1, it is characterised in that: the ultrasonic wave added direct current sintering
Furnace further includes atmosphere control system, and the atmosphere control system includes air inlet/outlet and atmosphere control centre；
Described air inlet/outlet one end is connected to the furnace interior, and the other end is connect with the control climate center；The atmosphere
Control centre connect with the sintering control centre, vacuumizes signal according to what the sintering control centre sent or is passed through gas
Signal is vacuumized to furnace interior or is passed through the operation of pre-set gas.
7. a kind of ultrasonic wave added direct current sintering furnace as described in claim 1, it is characterised in that: the ultrasonic wave added direct current sintering
Furnace further includes cooling water recirculation system；
The cooling water recirculation system includes water inlet, water outlet, cooling water circulation channel and cooling water control center；
The water inlet is located at the bottom of furnace body, and the water outlet is located at the top of the furnace body, the cooling water circulation channel
It is set to the furnace interior, and is connected to the inlet and outlet；
The cooling water control center is connect with the sintering control centre, the cooling water sent according to the sintering control centre
Cycle signal, cooling water circulating in cooling water circulation channel.
8. a kind of ultrasonic wave added direct current sintering furnace as described in claim 1, it is characterised in that: the ultrasonic wave added direct current sintering
Furnace further includes temp measuring system, and the temp measuring system includes thermometric window and thermometric center；The thermometric window is located at the furnace body
Middle part；The thermometric center is sent to described by the temperature of material to be sintered in furnace body described in the thermometric windows detecting
It is sintered control centre.
9. a kind of ultrasonic wave added direct current sintering furnace as described in claim 1, it is characterised in that: the furnace body includes being bolted
Upper bell, furnace body and lower bell.
10. a kind of sintering method using the ultrasonic wave added direct current sintering furnace as described in any one of claim 1~9, feature exist
In the following steps are included:
1) confirmation each component working condition of sintering furnace is normal, and opens lower bell, and the mold equipped with material to be sintered is placed on
Between pressure head and push-down head, lower bell is closed；
2) it is required according to sintering process, sintering control centre vacuumizes furnace interior by atmosphere control system, and is passed through guarantor
Protect atmosphere；
3) ultrasonic control system material to be sintered intracorporal to furnace is controlled by sintering control centre and carries out ultrasonic vibration treatment；
4) current strength between DC current control centre control seaming chuck and push-down head is controlled by sintering control centre, made
Material warms to be sintered；
5) uniaxial pressure control system is controlled by sintering control centre and controls pressure suffered by material to be sintered；
6) require adjustment above-mentioned 3)~5 according to sintering process) sequencings of three steps and duration, so that material to be sintered is existed
Ultrasonic field, DC current, uniaxial pressure coupling under be sintered；It is monitored in furnace by temp measuring system during the sintering process
Temperature；
7) ultrasonic control system, DC current control centre are closed after being sintered, and it is slow to control uniaxial pressure control system
Removal pressure, then promotes descent of temperature by cooling water recirculation system；
8) in the complete removal of pressure, and furnace temperature is cooled to room temperature, and is opened lower bell, is taken out sintered body；Furnace interior is carried out clear
Reason, closes each component, and sintering is completed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207588A (en) * | 2020-01-14 | 2020-05-29 | 太原理工大学 | Quick fritting furnace under multi-functional compound field effect |
| CN111912227A (en) * | 2020-07-30 | 2020-11-10 | 清华大学 | Rapid sintering equipment and sintering method for dynamically loading coupled alternating current |
| CN116492955A (en) * | 2023-05-30 | 2023-07-28 | 安徽科技学院 | Device and method for preparing biochar through ultrasonic vibration |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003328009A (en) * | 2002-05-08 | 2003-11-19 | National Institute Of Advanced Industrial & Technology | Method for manufacturing magnetic material with high performance, and compact thereof |
| DE102008054542A1 (en) * | 2008-12-11 | 2010-07-01 | Technische Universität Dresden | Sinter process for condensing and compounding powdery base materials under use of static pressure, comprises compressing a sintering body under static pressure and simultaneously initiating ultrasound waves in the sintering body |
| CN105066682A (en) * | 2015-08-05 | 2015-11-18 | 清华大学 | Rapid-densification pressure-coupling dynamic sintering furnace and sintering method |
| CN106017098A (en) * | 2016-05-19 | 2016-10-12 | 西南交通大学 | One-way hot-press high-temperature oscillation sintering furnace |
| US20160325353A1 (en) * | 2015-05-07 | 2016-11-10 | Thermal Technology, Llc | Automated Pyrometer Tracking in a Spark Plasma Sintering Apparatus and Method |
| CN108017395A (en) * | 2017-12-21 | 2018-05-11 | 东莞理工学院 | A kind of method of ultrasonic wave auxiliary oscillating pressure sintering silicon nitride ceramics |
| CN108380887A (en) * | 2018-03-20 | 2018-08-10 | 深圳大学 | A kind of ultrasonic vibration sintering method and device |
| CN108788159A (en) * | 2018-07-17 | 2018-11-13 | 太原理工大学 | A kind of ultrasonic wave auxiliary hot-pressed sintering furnace |
| CN108890114A (en) * | 2018-07-20 | 2018-11-27 | 太原理工大学 | Impulse electric field and the metal-base composites of ultrasonic field auxiliary are sintered synchronized links method and device |
| CN209726776U (en) * | 2019-01-30 | 2019-12-03 | 清华大学 | A kind of ultrasonic wave added direct current sintering furnace |
-
2019
- 2019-01-30 CN CN201910091806.9A patent/CN109682202A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003328009A (en) * | 2002-05-08 | 2003-11-19 | National Institute Of Advanced Industrial & Technology | Method for manufacturing magnetic material with high performance, and compact thereof |
| DE102008054542A1 (en) * | 2008-12-11 | 2010-07-01 | Technische Universität Dresden | Sinter process for condensing and compounding powdery base materials under use of static pressure, comprises compressing a sintering body under static pressure and simultaneously initiating ultrasound waves in the sintering body |
| US20160325353A1 (en) * | 2015-05-07 | 2016-11-10 | Thermal Technology, Llc | Automated Pyrometer Tracking in a Spark Plasma Sintering Apparatus and Method |
| CN105066682A (en) * | 2015-08-05 | 2015-11-18 | 清华大学 | Rapid-densification pressure-coupling dynamic sintering furnace and sintering method |
| CN106017098A (en) * | 2016-05-19 | 2016-10-12 | 西南交通大学 | One-way hot-press high-temperature oscillation sintering furnace |
| CN108017395A (en) * | 2017-12-21 | 2018-05-11 | 东莞理工学院 | A kind of method of ultrasonic wave auxiliary oscillating pressure sintering silicon nitride ceramics |
| CN108380887A (en) * | 2018-03-20 | 2018-08-10 | 深圳大学 | A kind of ultrasonic vibration sintering method and device |
| CN108788159A (en) * | 2018-07-17 | 2018-11-13 | 太原理工大学 | A kind of ultrasonic wave auxiliary hot-pressed sintering furnace |
| CN108890114A (en) * | 2018-07-20 | 2018-11-27 | 太原理工大学 | Impulse electric field and the metal-base composites of ultrasonic field auxiliary are sintered synchronized links method and device |
| CN209726776U (en) * | 2019-01-30 | 2019-12-03 | 清华大学 | A kind of ultrasonic wave added direct current sintering furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207588A (en) * | 2020-01-14 | 2020-05-29 | 太原理工大学 | Quick fritting furnace under multi-functional compound field effect |
| CN111912227A (en) * | 2020-07-30 | 2020-11-10 | 清华大学 | Rapid sintering equipment and sintering method for dynamically loading coupled alternating current |
| CN116492955A (en) * | 2023-05-30 | 2023-07-28 | 安徽科技学院 | Device and method for preparing biochar through ultrasonic vibration |
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