CN108317857A - A kind of sintering furnace and its sintering method of sintered samarium cobalt magnetic material - Google Patents
A kind of sintering furnace and its sintering method of sintered samarium cobalt magnetic material Download PDFInfo
- Publication number
- CN108317857A CN108317857A CN201711486824.4A CN201711486824A CN108317857A CN 108317857 A CN108317857 A CN 108317857A CN 201711486824 A CN201711486824 A CN 201711486824A CN 108317857 A CN108317857 A CN 108317857A
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- burner hearth
- graphite
- magnetic material
- electrode
- air door
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- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 title claims abstract description 93
- 239000000696 magnetic material Substances 0.000 title claims abstract description 91
- 238000005245 sintering Methods 0.000 title claims abstract description 50
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 19
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 75
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 238000009423 ventilation Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 151
- 229910002804 graphite Inorganic materials 0.000 claims description 145
- 239000010439 graphite Substances 0.000 claims description 145
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 10
- 239000011733 molybdenum Substances 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 239000000112 cooling gas Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 210000000038 chest Anatomy 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 29
- 239000000463 material Substances 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0036—Linings or walls comprising means for supporting electric resistances in the furnace
-
- 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
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/02—Ohmic resistance heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The present invention discloses a kind of sintering furnace and its sintering method of sintered samarium cobalt magnetic material, which is characterized in that including furnace body and cooling system, the furnace body includes furnace shell, the burner hearth in furnace shell is arranged;The both ends of furnace shell are respectively arranged with fixed fire door, hinged fire door, and the inside of the hinged fire door is equipped with the burner hearth pad for closed furnace;The burner hearth is leaned to one side equipped with left ventilation opening and right ventilation opening, the burner hearth, which is additionally provided with, is respectively used to close left ventilation opening, the left air door of right ventilation opening and right air door, and the inner wall of the burner hearth, which is equipped with, is covered each by the left light reflecting board of left ventilation opening and right ventilation opening and right light reflecting board.Sintered samarium cobalt magnetic material of the present invention, pumps the air in burner hearth, is heated to SmCo magnetic material, and SmCo magnetic material is cooled down by cooling system;By the heat that light reflecting board accumulates the fever circuit of burner hearth, fever circuit generates, improves the efficiency of heating SmCo magnetic material and keep the temperature in burner hearth more uniform.
Description
Technical field
The present invention relates to the sintering furnaces and its sintering of sintering furnace technical field more particularly to a kind of sintered samarium cobalt magnetic material
Method.
Background technology
In material processing field, many metal materials are required for carrying out heat treatment process and cooling process;
Pass through vacuum-sintering only in heat treatment process, and could be obtained in cooling process by being quickly cooled down
Best material property.By taking SmCo magnetic material as an example, its heat treatment process requires that vacuum degree is good, temperature deviation is small,
Its cooling process requires cooling velocity fast, therefore the Equipment for Heating Processing needs for carrying out the two process can be to constant temperature
Heating chamber carries out high accuracy temperature control, so that the temperature of heated at constant temperature intracavitary is uniform.
Existing Chinese patent notification number is a kind of external-heat vacuum sintering gas quenching furnace of CN202322922U comprising furnace body
It is interior to be equipped with heated at constant temperature chamber, it is equipped with external heating component outside the furnace body of corresponding heated at constant temperature chamber;Vacuum extractor passes through pumping
Vacuum line is connected to heated at constant temperature chamber;Wind turbine is connected to by backwind tube and discharge pipe with the front and back end of heated at constant temperature chamber respectively;
Temperature-measuring part is set to the central part of heated at constant temperature chamber, and is electrically connected with main control module by conducting wire;Main control module and heater
Structure driving part is electrically connected, and drives external heating component by heating mechanism driving part.Above-mentioned external-heat vacuum is burnt
Knot air-quenching furnace is set to the outside of corresponding this part furnace body of heated at constant temperature chamber by left half calandria and right half calandria, for pair
Heated at constant temperature chamber is heated, so, heated at constant temperature chamber first be heated again to SmCo magnetic material heat, the efficiency of heating surface compared with
It is low, meanwhile, heated at constant temperature chamber is not heater, and in thermal histories, heated at constant temperature chamber, which is difficult to ensure, to be heated evenly, and constant temperature is being passed through
When heating chamber again heats SmCo magnetic product, SmCo magnetic product can not be allowed to be heated evenly.
Existing Chinese patent is disclosed as the Multifunction vacuum furnace of CN106500503A comprising heating room, before heating room
Portion is movably set with front left and right air door, and rear left and right commutation air door, each air door cylinder peace are symmetrically installed at heating outdoor, air duct end
Outside furnace shell, cylinder piston rod connect across furnace shell with air door axis pin by sealing structure;When advantage is to heat, front left and right
Air door closes air door, and no venthole avoids energy loss during heating, energy saving, while ensureing heating evenly;
When cooling, the unlimited amplitude of front left and right air door is big, while rear left and right air door can commutate, i.e., air-flow is inside and outside heating room, left and right
Alternately commutation flowing, commutating period can set.Above-mentioned Multifunction vacuum furnace is not separated by setting electrode connecting structure, does not also have
Equally distributed fever circuit and fever circuit, product is heated not enough uniformly, and without light reflecting board, left air door or right air door are opened
When, the strong light of burner hearth projects the element being easily damaged outside burner hearth in sintering furnace, while external power supply enters burner hearth and easy tos produce electricity
Spark might have product the equipment of product heating in burner hearth when temperature reaches very high (2000 degree or more of high temperature)
It influences, meanwhile, above-mentioned Multifunction vacuum furnace drives rear left air door, rear right air door, front left air door and front right air door by cylinder,
With noise, and it is driven unstable, easy gas leakage.
Invention content
Technical problem to be solved by the present invention lies in for the above-mentioned deficiency of the prior art, propose a kind of product that can allow
The sintering furnace and its burning of sintered samarium cobalt magnetic material for being heated evenly, improving sintering furnace service life and product capable of being made uniformly to cool down
Knot method.
The present invention solve its technical problem the technical solution adopted is that:
A kind of sintering furnace of sintered samarium cobalt magnetic material, which is characterized in that including furnace body and cooling system;
The burner hearth that the furnace body includes furnace shell, is arranged in furnace shell;The both ends of furnace shell are respectively arranged with fixed fire door, are hinged
The inside of fire door, the hinged fire door is equipped with the burner hearth pad for closed furnace;
The burner hearth is leaned to one side equipped with left ventilation opening and right ventilation opening, and the burner hearth, which is additionally provided with, is respectively used to close left ventilation
Mouth, the left air door of right ventilation opening and right air door, the inner wall of the burner hearth are equipped with the left side for being covered each by left ventilation opening and right ventilation opening
Light reflecting board and right light reflecting board;The air duct passed through with air feed between the burner hearth and furnace shell, when left air door and right air door are opened
Qi Shi, burner hearth are connected to air duct;The burner hearth, which is equipped with, is distributed in the first burner hearth electrode of inboard wall of burner hearth, the second burner hearth electrode, the
Three burner hearth electrodes and three groups of fever circuits being made of plate or tubular graphene, one group of fever connection the first burner hearth electrode and
Second burner hearth electrode, one group of fever connection the second burner hearth electrode and third burner hearth electrode, one group of fever connection first
Burner hearth electrode and third burner hearth electrode;
The hair that the burner hearth pad is equipped with the first burner hearth pad electrode, the second burner hearth pads electrode and is made of plate or tubular graphene
Hot loop, the fever circuit connects the first burner hearth pad electrode and the second burner hearth pads electrode;
The cooling system includes wind turbine and the heat exchanger in furnace shell, the heat exchanger and burner hearth in furnace shell
Between have interval;The interval both ends be respectively provided with can with furnace shell movable contact and then change the of flow direction of the wind on air duct
One commutation air door and the second commutation air door, the heat exchanger are between wind turbine and burner hearth.
Further, the fever circuit includes multiple lateral graphite bars and multiple longitudinal graphite bars, the multiple transverse direction
Graphite bar is connected with the multiple longitudinal graphite bar makes the fever circuit at a series loop, the both ends in the fever circuit
It is separately connected the first burner hearth pad electrode and the second burner hearth pad electrode.
Further, the furnace body is additionally provided with three electrode connecting structures, and the electrode connecting structure includes ceramic tube, stone
Electrode ink and mains connection;The ceramic tube passes through the side wall of burner hearth and stretches into burner hearth;The graphite electrode is in ceramics
Guan Zhong, both ends are stretched out from the both ends of ceramic tube;The graphite electrode of three electrode connecting structures is respectively the first burner hearth electricity
Pole, the second burner hearth electrode and third burner hearth electrode.
Further, the inboard wall of burner hearth is equipped with upper inner wall, lower inner wall, left inside wall and right inner wall;The first burner hearth electricity
Pole setting is in upper inner wall, and in the left inside wall, the third burner hearth electrode is arranged on the right side for the second burner hearth electrode setting
Inner wall.
Further, every group of fever circuit includes multiple graphite-pipes and multiple graphite blocks, and the multiple graphite-pipe interval is flat
Row is set to the inboard wall of burner hearth;Adjoining graphite pipe is concatenated by graphite block head and the tail;Graphite-pipe in every group of fever circuit it is total
Length is consistent, and the outer diameter at each graphite-pipe both ends is less than the outer diameter at position among the graphite-pipe.
Further, the lateral graphite bar in the fever circuit, longitudinal graphite bar section be rectangle.
Further, the light reflecting board is equipped with a plurality of gap arranged in parallel divulged information.
Further, the electrode connecting structure further includes the mains connection being connected with graphite electrode, and the power supply connects
Fitting includes copper bar, connector and conductive seat, and the connector connects copper bar and graphite electrode;The conductive seat connects copper bar,
And it is pierced by between furnace shell and burner hearth to outside furnace shell;The connector can be molybdenum block or tungsten block.
Further, the furnace body, which is additionally provided with, respectively drives left air door, right air door, the first commutation air door, the second commutation wind
Four cylinders of door;The cooling system controls left air door, right air door, the first commutation door by controlling the flexible of each cylinder
With the opening and closing of the second commutation air door.
Further, the cylinder includes cylinder barrel and piston rod;The piston rod is telescopic to be arranged in cylinder barrel, piston
The free end of bar is stretched into sintering furnace, has annular space between the first cylinder seal circle and the second sealing cylinder circle;Institute
It states cylinder barrel and is equipped with and with what the annular space was connected to vacuumize hole.
A kind of method of sintered samarium cobalt magnetic material, passes through sintering furnace sintered samarium cobalt magnetic material, which is characterized in that including
Step:
SmCo magnetic material is positioned in burner hearth by S1, and pumping the gas in burner hearth makes to reach predetermined vacuum degree in burner hearth;
S2, heat up sintered samarium cobalt magnetic material;After temperature in burner hearth reaches preset temperature, heat preservation sintering SmCo magnetism material
Material, and be filled with inert gas into burner hearth and make SmCo magnetic material heat preservation sintering preset time under the atmosphere of inert gas;
S3, cooling SmCo magnetic material.
Further, in step S2, before the sintered samarium cobalt magnetic material that heats up, pre-burning SmCo magnetic material, to SmCo
Magnetic material is heated to remove moisture and gasoline.
Further, in step S3, when cooling SmCo magnetic material, control left air door, right air door first commutate air door and
The opening and closing of second commutation air door, starting wind turbine makes cooling gas be circulated between air duct, burner hearth and heat exchanger.
Sintered samarium cobalt magnetic material of the present invention, pumps the air in burner hearth, is heated to SmCo magnetic material, passes through cooling system
The cooling SmCo magnetic material of system;By the heat that light reflecting board accumulates the fever circuit of burner hearth, fever circuit generates, heating is improved
The efficiency of SmCo magnetic material simultaneously keeps the temperature in burner hearth more uniform.
Description of the drawings
Fig. 1 is the overall schematic of sintering furnace;
Fig. 2 is the structural representation of furnace shell and burner hearth;
Fig. 3 is the structural schematic diagram of hinged fire door;
Fig. 4 is the overall schematic of electrode connecting structure;
Fig. 5 is the structural schematic diagram of fever circuit;
Fig. 6 is the structural schematic diagram of light reflecting board;
Fig. 7 is the structural schematic diagram of cylinder;
Fig. 8 is the phantom of cylinder.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Please refer to Fig. 1-Fig. 8, the present invention a kind of sintering furnace and its sintering method of sintered samarium cobalt magnetic material, sintering furnace packet
Include furnace body, vacuum system, cooling system and PLC intelligence control systems.
Furnace body, including furnace shell 100 and the burner hearth 200 that is arranged in furnace shell 100;Furnace shell both ends are respectively arranged with stationary furnace
Door, hinged fire door;The inside of hinged fire door 300 is equipped with the burner hearth pad 310 for closed furnace 200;The fixed fire door is fixed
In one end of furnace shell to close one end of furnace shell, the other end of furnace shell and the hinged fire door are hinged;The burner hearth 200 is leaned to one side
Equipped with left ventilation opening 210 and right ventilation opening 220, the burner hearth 200, which is additionally provided with, is respectively used to close left ventilation opening 210, right ventilation
The left air door 230 and right air door 240 of mouth 220, the inner wall of the burner hearth 200, which is respectively equipped with, covers left ventilation opening 210 and right ventilation
The left light reflecting board 250 and right light reflecting board 250 of mouth 220.
The air duct 150 passed through with air feed in the furnace shell 100.
Vacuum system makes burner hearth 200 be in vacuum state for pumping the air in burner hearth 200.
Cooling system includes the wind turbine 140 in furnace shell 100 and the heat exchanger 110 in furnace shell 100, the heat exchange
There is interval 170, heat exchanger 110 is between wind turbine 140 and burner hearth 200 between device 110 and burner hearth 200.170 liang of the interval
End is respectively provided with the first commutation air door 120 and second commutation air door 130, the first commutation air door 120 and second commutation air door
130 can change flow direction of the wind on air duct 150 in turn with 100 movable contact of furnace shell.
Cooling system is for cooling down SmCo magnetic material, by controlling left air door 230, the commutation air door of right air door 240, first
120 and second commutation air door 130 opening and closing, start wind turbine 140 make cooling gas air duct 150, burner hearth 200 and heat exchange
It is circulated between device 110, and then cooling SmCo magnetic material.
The air duct 150 is in the outside of burner hearth 200 and heat exchanger 110, and wind can be on the left of air duct 150 be outside burner hearth 200
To the external right side of burner hearth 200, or the outer left side from 200 external right side of burner hearth to burner hearth 200.
PLC intelligence control systems, the operation for controlling vacuum system and cooling system.
The furnace body is additionally provided with multiple electrodes connection structure 400, and one end setting of each electrode connecting structure 400 exists
Outside furnace shell 100 and external power supply, the other end stretch into burner hearth 200;The inner wall of burner hearth 200 is equipped with multiple fever circuits 260, described
The both ends of fever circuit 260 respectively connect an electrode connecting structure 400.
The electrode connecting structure 400 includes ceramic tube 410, graphite electrode 430 and mains connection 420;The ceramics
Pipe 410 passes through the side wall of burner hearth and stretches into burner hearth 200;The graphite electrode 430 is in ceramic tube 410;Its both ends is stretched out
The one end at the both ends of ceramic tube 410, the mains connection 420 is in outside furnace shell 100, and the other end penetrates furnace shell 100 and stove
It is connected between thorax 200 and with graphite electrode 430.Ceramic tube 410 insulate, and allows graphite electrode 430 with the burner hearth 200 without direct
Contact avoids generating electric spark.
400 external power supply of electrode connecting structure is simultaneously powered for the fever circuit 260 in burner hearth 200, meanwhile, electrode connection knot
Structure 400 can be cooled down by cooling tube 440.
The graphite electrode 430 also covers that there are two be respectively held against the graphite nut 450 at ceramic tube both ends.
One end of the mains connection 420 is in outside furnace shell 100, and the other end penetrates between furnace shell 100 and burner hearth 200
And it is connected with graphite electrode 430.
Graphite electrode 430 is not directly contacted with the burner hearth 200, avoids generating spark, stone is sleeved on by graphite nut 450
To fix ceramic tube 410 on electrode ink 430, the graphite high temperature resistant is unlikely to deform, is easily worked simultaneously.
The mains connection 420 includes copper bar 421, connector 422 and conductive seat 423, and the connector 422 connects copper
Bar 421 and graphite electrode 430, the conductive seat 423 connects copper bar 421, and is pierced by between furnace shell 100 and burner hearth 200 to stove
Outside shell 100;The conductive seat 423 can be Ginza, copper seat or aluminium seat, and conductive seat 423 is mainly used for conduction, and connector 422 is used for
Connect copper bar 421 and graphite electrode 430.
The connector 422 can be molybdenum block or tungsten block, and the molybdenum block is pressed by multiple molybdenum sheets, and the tungsten block is by multiple leaf
It is pressed into;The coefficient of thermal expansion of molybdenum block and tungsten block high temperature resistant, molybdenum and tungsten is very low, in graphite electrode 430 when powering for burner hearth 200,
The temperature of the graphite electrode 430 is very high, and molybdenum block or tungsten block are hardly expanded touching the heat that electrode 430 is brought, in this way
Copper bar 421 and graphite electrode 430 will not be damaged.
One end that furnace shell 100 is pierced by the conductive seat 423 is equipped with hollow groove, and hollow groove is passed through for cold water, and hollow groove is simultaneously
Non- straight slot, cold water, which enters in hollow groove, to flow back, and main purpose is that the heat of conductive seat 423 is taken away by cold water, wherein copper bar
421 are connected with the conductive seat 423, and the hollow groove can be passed through in copper bar 421, pass through water cooling copper bar 421 in hollow groove.
The electrode connecting structure 400 further includes cooling tube 440, including tube head 441 and hollow cooling mouth 442;Institute
It states 442 one end of cooling mouth to stretch into tube head 441, the other end stretches into the hollow groove;The inner wall of the tube head 441 and cooling mouth
There is liquid gap 443 between 442 outer wall;
The tube head 441 is equipped with inlet 441a and connects with liquid outlet 441b, the inlet 441a and the cooling mouth 442
Logical, the liquid outlet 441b is connected to liquid gap 443 is gone out.It is injected in hollow groove by injecting cold water, to cool down conductive seat 423,
Avoid 423 temperature of conductive seat excessively high.
Cold water enters in hollow groove and flows back, and liquid outlet 441b outflows are arrived again through going out liquid gap 443.
The conductive seat 423 is equipped with connector 423b, and the tube head 441 is equipped with the fixation for being in 443 periphery of liquid gap
Edge 444, the fixed edge are connected along 444 with the connector 423b.
The cooling tube 440 is additionally provided with the sealing ring for being in the connector 423b and the fixed edge between 444,
Cooling water is avoided to overflow by sealing ring sealing.
The conductive seat 423 is additionally provided with the fixed disc 423a for being fixed on 100 outer wall of furnace shell, and fixed disc 423a is for solid
Determine conductive seat 423, is connect with external power supply with facilitating.
The graphite electrode 430 stretched into burner hearth 200 is three, respectively the first burner hearth electrode 431, the second burner hearth electrode
432 and third burner hearth electrode 433.
Fever circuit 260 in 200 inner wall of burner hearth is three groups, and one group of fever circuit 260 connects the first burner hearth electrode 431
With the second burner hearth electrode 432, one group of fever circuit 260 connects the second burner hearth electrode 432 and third burner hearth electrode 433, one group of hair
Hot line road 260 connects the first burner hearth electrode 431 and third burner hearth electrode 433.
For generating heat, the three-phase electricity electrode external power supply supplies three groups of fever circuits 260 for three groups of fever circuits 260
Electricity, three-phase electricity electrode include the first burner hearth electrode 431, the second burner hearth electrode 432 and third burner hearth for being distributed in 200 inner wall of burner hearth
Electrode 433;The burner hearth 200 further includes three groups of fever circuits 260, and one group of fever circuit 260 connects 431 He of the first burner hearth electrode
Second burner hearth electrode 432, one group of fever circuit 260 connect the second burner hearth electrode 432 and third burner hearth electrode 433, one group of fever
Circuit 260 connects the first burner hearth electrode 431 and third burner hearth electrode 433.
Three groups of fever circuits 260 are distributed in upper inner wall, lower inner wall, left inside wall and the right inner wall of burner hearth 200.
The burner hearth pad 310 is equipped with the first burner hearth pad electrode 311, the second burner hearth pad electrode 312 and fever circuit 320, institute
It states fever circuit 320 and connects the first burner hearth pad electrode 311 and the second burner hearth pad electrode 312;The outside of the hinged fire door 300 is in
Spheric.
Fever circuit 320 is for generating heat, and the first burner hearth pad electrode 311, the second burner hearth pad electrode 312 are for being described
Fever circuit 320 powers.
When hinged fire door 300 closes furnace shell 100, the burner hearth pad 310 closes the both ends of the burner hearth 200;At this point, can
It is generated heat by the fever circuit 260 in burner hearth 200, the fever circuit 320 on burner hearth pad 310.
SmCo magnetic material is placed in burner hearth 200, SmCo magnetic material it is front and back by three groups of fevers up and down
It is heated in circuit 260 and fever circuit 320 so that SmCo magnetic material is heated evenly.
The heating of burner hearth 200 is may make by light reflecting board 250 evenly, and cooling is more uniform.
The light reflecting board 250 is equipped with a plurality of gap 251 arranged in parallel, and the light reflecting board 250 is additionally provided in seam
The reserved edge 252 of 251 periphery of gap;The gap 251 of light reflecting board 250 after sintering furnace sintered products, needs to produce for divulging information
Product cool down, and lead to cold SmCo magnetic material by opening left air door 230 or right air door 240.
One light reflecting board 250 covers left ventilation opening 210 and the right side in left air door 230, and another light reflecting board 250 covers
Right ventilation opening 220 and the left side for being in right air door 240, light reflecting board 250 are used to reflect the thermal energy in burner hearth 200, and sintering furnace exists
When heating product, the temperature of burner hearth 200 is very high, and a large amount of thermal energy are will produce in burner hearth 200;By light reflecting board 250 can accumulation of heat, and
The heat in burner hearth 200 is reflected, the efficiency of heating surface of sintering furnace is improved with this, while by reflecting the heat in burner hearth 200, making stove
Temperature in thorax 200 is more uniform, and the light reflecting board 250, which is equipped with a plurality of gap arranged in parallel, can make burner hearth uniform ventilation
251。
The light reflecting board 250 be graphite material, can high temperature resistant, be unlikely to deform.
The quantity of the light reflecting board 250 is two, and in the present embodiment, it is anti-that two light reflecting boards 250 can be divided into left light
Plate and right light reflecting board are penetrated, left air door 230 and right air door 240 are covered each by, described two light reflecting boards 250 are symmetrical.
The a plurality of gap 251 longitudinal arrangement or transversely arranged, equal longitudinal arrangement or balanced mutually arrangement, are conducive to uniformly logical
Wind makes the cooling effect of SmCo magnetic material more preferable.
The distance between adjacent slits 251 are equal, can be uniformly logical through light reflecting board 250 in the burner hearth 200 when ventilation
Wind.
The light reflecting board 250 is additionally provided with multiple fixing bolts, and multiple fixing bolts surround one along the reserved edge 252
Circle, multiple fixing bolts both pass through reserved edge 252 and are fixedly linked with the burner hearth 200.
The light reflecting board 250 is rectangular, and the shape of the light reflecting board 250 can be according to left ventilation opening 210, right ventilation opening
220 shape setting.
SmCo magnetic material is positioned in burner hearth 200,310 closed furnaces 200 are padded by burner hearth, to SmCo magnetic material
When heating, need to close left air door 230 or right air door 240.The efficiency of heating surface of burner hearth 200 can be improved by light reflecting board 250.
Left air door 230, the commutation commutation air door 130 of air door 120 and second of right air door 240, first are driven by cylinder:
The sintering furnace is provided with multiple cylinders 500, and in this embodiment, sintering furnace is set to be used for there are one cylinder 500
Left air door 230 is driven, one end of the cylinder 500 is fixed on the left side of furnace shell 100, and the other end is connected with the left air door 230.It burns
Freezing of a furnace is additionally provided with another cylinder 500, and for driving right air door 240, one end of the cylinder 500 is fixed on the right side of furnace shell 100, separately
One end is connected with the right air door 240.The sintering furnace respectively drives the first commutation air door 120, second commutation wind there are two setting
The cylinder 500 of door 130.
Pass through cooling system control the first commutation commutation of air door 120, second air door 130, left air door 230 and right air door 240
Opening and closing so that cooled hearth 200.
The cylinder 500 includes cylinder barrel 510, cylinder head 520, cylinder bottom 530 and piston rod 540, and the both ends of cylinder barrel 510 connect respectively
Cylinder head 520 and cylinder bottom 530 are connect, the piston rod 540 stretches into cylinder barrel 510, and the piston rod 540 is arranged with the first cylinder seal
Circle 541 and the second cylinder seal circle 542, the second cylinder seal circle 542 are in cylinder barrel 510 and touch cylinder head 520;It is described
The left air door 230 of telescopic drive or right air door 240 or first the commutation air door 120 or the second that cylinder 500 passes through piston rod 540
Commutate air door 130.
There is annular space 560 between the first cylinder seal circle 541 and the second cylinder seal circle 542;The cylinder barrel
510 vacuumize hole 512 equipped with what is be connected to the annular space 560, and for piston 540 in activity, air is possibly into the annular
Space 560 eventually enters into burner hearth 200, by pumping the air of annular space 560, annular space 560 is allowed to be in vacuum always
State, and then prevent air from entering in burner hearth 200.
The cylinder barrel 510 is equipped with air admission hole 511.
The outer wall of the cylinder barrel 510 is equipped with the air inlet pipe 514 being connected to air admission hole 511.
The outer wall of the cylinder barrel 510 is equipped with and the vacuum-pumping tube 513 for vacuumizing hole 512 and being connected to, the vacuum-pumping tube
513 are circumscribed with vacuum extractor, pump the air that vacuum plant extracts annular space 560, the annular space 560 is made to locate always
In vacuum state.
The cylinder bottom 530 is equipped with the cylinder being fixed on furnace shell 100 and fixes disk 531, the piston rod 540 and the air door
It is hinged;The air door can be above-mentioned left air door 230, the commutation commutation air door 130 of air door 120 and second of right air door 240, first.
Specifically, left air door 230, the commutation commutation of air door 120 and second of right air door 240, first are controlled in cooling system
When the closing and unlatching of air door 130, pass through the left air door 230 of the telescopic drive of cylinder 500, the commutation air door of right air door 240, first
120 and second commutation air door 130 closing and unlatching, the piston rod 540 of the cylinder 500 extends so that the air door is closed,
Piston rod 540 bounces back, and opens air door.
When being sintered stove heat product, to allow product to be heated evenly;
In upper inner wall, the second burner hearth electrode 432 is arranged in the left inside wall for the setting of first burner hearth electrode 431,
The third burner hearth electrode 433 is arranged in the right inner wall, and the left inside wall and right inner wall are symmetrical.
Every group of fever circuit 260 includes multiple graphite-pipes 261 and multiple graphite blocks 262, and the multiple graphite-pipe 261 is spaced
It is arranged in parallel in the upper inner wall, lower inner wall, left inside wall and right inner wall;Pass through stone between the graphite-pipe 261 and graphite-pipe 261
Ink stick 262 is connected.
It is distributed the position of the first burner hearth electrode 431, the second burner hearth electrode 432 and third burner hearth electrode 433 in this way,
By generating heat, circuit 260 connects the first burner hearth electrode 431, the second burner hearth electrode 432 and third burner hearth electrode 433;So that fever
Circuit 260 more uniform can be distributed on 200 inner wall of burner hearth.
In this embodiment, the first burner hearth electrode 431 is in the centre position of the upper inner wall front end, and described
Two burner hearth electrodes 432 are in the position of the left side wall front end on the lower, before the third burner hearth electrode 433 is in the right side wall
The position of end on the lower.
Specifically, multiple graphite-pipes 261 include the first graphite-pipe, the second graphite-pipe, third in three groups of fever circuits 260
Graphite-pipe, the 4th graphite-pipe, the 5th graphite-pipe, the 6th graphite-pipe, the 7th graphite-pipe, the 8th graphite-pipe, the 9th graphite-pipe, the tenth
Graphite-pipe, the 11st graphite-pipe, the 12nd graphite-pipe, the 13rd graphite-pipe, the 14th graphite-pipe, the 15th graphite-pipe, the tenth
Six graphite-pipes, the 17th graphite-pipe and the 18th graphite-pipe;
Multiple graphite blocks 262 include the first graphite block, the second graphite block, third graphite block, the in three groups of fever circuits 260
Four graphite blocks, the 5th graphite block, the 6th graphite block, the 7th graphite block, the 8th graphite block, the 9th graphite block, the tenth graphite block,
11 graphite blocks, the 12nd graphite block, the 13rd graphite block, the 14th graphite block, the 15th graphite block, the 16th graphite block,
17th graphite block and the 18th graphite block;
The centre of first graphite block is connected with the first burner hearth electrode 431, one end of first graphite block and the described tenth
The front end of eight graphite-pipes, the other end are connected with the front end of first graphite-pipe;One end of second graphite block with it is described
The rear end of first graphite-pipe, the other end are connected with the rear end of second graphite-pipe;One end of the third graphite block and institute
The front end of the second graphite-pipe is stated, the other end is connected with the front end of the third graphite-pipe;One end of 4th graphite block with
The rear end of the third graphite-pipe, the other end are connected with the rear end of the 4th graphite-pipe;One end of 5th graphite block
With the front end of the 4th graphite-pipe, the other end is connected with the front end of the 5th graphite-pipe;The one of 6th graphite block
The rear end at end and the 5th graphite-pipe, the other end are connected with the rear end of the 6th graphite-pipe;7th graphite block
Centre is connected with the second burner hearth electrode 432, the front end of one end and the 6th graphite-pipe of the 7th graphite block, the other end
It is connected with the front end of the 7th graphite-pipe;The rear end of one end and seven graphite-pipe of the 8th graphite block, the other end
It is connected with the rear end of the 8th graphite-pipe;The front end of one end and the 8th graphite-pipe of the 9th graphite block, it is another
End is connected with the front end of the 9th graphite-pipe;The rear end of one end and the 9th graphite-pipe of the tenth graphite block, it is another
One end is connected with the rear end of the tenth graphite-pipe;The front end of one end and the tenth graphite-pipe of the 11st graphite block,
Its other end is connected with the front end of the 11st graphite-pipe;One end of 12nd graphite block and the 11st graphite-pipe
Rear end, the other end is connected with the rear end of the 12nd graphite-pipe;The centre of 13rd graphite block and third burner hearth
Electrode 433 is connected, the front end of one end and the 12nd graphite-pipe of the 13rd graphite block, the other end and the described tenth
The front end of three graphite-pipes is connected;The rear end of one end and the 13rd graphite-pipe of the 14th graphite block, the other end with
The rear end of 14th graphite-pipe is connected;The front end of one end and the 14th graphite-pipe of the 15th graphite block,
The other end is connected with the front end of the 15th graphite-pipe;One end of 16th graphite block and the 15th graphite-pipe
Rear end, the other end are connected with the rear end of the 16th graphite-pipe;One end and the described 16th of 17th graphite block
The front end of graphite-pipe, the other end are connected with the front end of the 17th graphite-pipe;One end of 18th graphite block and institute
The rear end of the 17th graphite-pipe is stated, the other end is connected with the rear end of the 18th graphite-pipe.
Wherein, the length of each graphite-pipe 261 is consistent, the total length of multiple graphite-pipes of every group of fever circuit 260
Unanimously.Three groups of fever circuits 260 can be allowed in adstante febre in this way, the resistance of every group of fever circuit 260 is similar, so that every
The heating effect of fever circuit 260 is similar.Graphite-pipe high temperature resistant, it is indeformable in the case of a high temperature.The graphite-pipe is described in
The axial setting of burner hearth 200, the length of the graphite-pipe 261 are slightly shorter than the length of burner hearth 200, each 261 both ends of graphite-pipe
Outer diameter be less than the outer diameter at 261 intermediate position of the graphite-pipe, among the resistance ratio graphite-pipe 261 at 261 both ends of each graphite-pipe
The resistance at position is big, and the heat of generation is more, and make up 261 both ends of graphite-pipe in this way leads to heating not farther out from SmCo magnetic material
Equal defect, when such three groups of fever circuits 260 heat product, three groups of fever circuits 260 are covered with the interior of entire burner hearth 200
Wall, in this way, SmCo magnetic material is when heated, it up and down can thermally equivalent.
Each graphite block 262 is both provided with fixed seat, and the fixed seat is fixed on 200 inner wall of the burner hearth.
In this embodiment, the fever circuit 320 includes multiple lateral graphite bars 321 and multiple longitudinal graphite bars
322, the multiple transverse direction graphite bar 321 is connected with the multiple longitudinal graphite bar 322 makes the fever circuit 320 in a string
Join circuit, the both ends in the fever circuit 320 are separately connected the first burner hearth pad electrode 311 and the second burner hearth pad electrode 312.
Multiple transverse direction graphite bars 321 include the first lateral graphite bar, the second lateral graphite bar, third transverse direction graphite bar, the
Four lateral graphite bars, the 5th lateral graphite bar, the 6th lateral graphite bar and the 7th lateral graphite bar;Multiple longitudinal direction graphite bars 322
Including first longitudinal direction graphite bar, second longitudinal direction graphite bar, third longitudinal direction graphite bar, the 4th longitudinal graphite bar, the 5th longitudinal graphite
Article and the 6th longitudinal graphite bar;One end of the first lateral graphite bar connects the first burner hearth and pads electrode 311, other end connection the
The upper end of one longitudinal graphite bar;The lower end of one end connection first longitudinal direction graphite bar of described second lateral graphite bar, the other end connect
Connect the lower end of second longitudinal direction graphite bar;The upper end of one end connection second longitudinal direction graphite bar of the third transverse direction graphite bar, it is another
The upper end of end connection third longitudinal direction graphite bar;The lower end of one end connection third longitudinal direction graphite bar of described 4th lateral graphite bar,
The lower end of the 4th longitudinal graphite bar of other end connection;The 4th longitudinal graphite bar of one end connection of the lateral graphite bar of described the 5th
Upper end, the upper end of the 5th longitudinal graphite bar of other end connection;The 5th longitudinal graphite of one end connection of described 6th lateral graphite bar
The lower end of item, the lower end of the 6th longitudinal graphite bar of other end connection;The 6th longitudinal graphite of one end connection of 7th lateral graphite bar
The upper end of item, the other end connect the second burner hearth and pad electrode 312.
The length of the second longitudinal direction graphite bar, third longitudinal direction graphite bar, the 4th longitudinal graphite bar and the 5th longitudinal graphite bar
Degree is consistent;The first longitudinal direction graphite bar length is equal to the length of the 6th longitudinal graphite bar, and more than second longitudinal direction graphite bar
Length.
At described second lateral graphite bar, the 4th lateral graphite bar and the 6th lateral graphite bar on the same line.
The fever circuit 320 is symmetrical, and the gap between adjacent longitudinal direction graphite bar 322 is equal.
The fever circuit 320 is generated heat by multiple lateral graphite bars 321, longitudinal graphite bar 322, and the fever circuit
320 is symmetrical, and lateral graphite bar 321, longitudinal graphite bar 322 are distributed on burner hearth pad 310, when the fever pair of fever circuit 320
When SmCo magnetic material heats, burner hearth pad 310 is not given off heat from any to SmCo magnetic material, and one piece of region is to production
Product give off heat so that product is heated evenly.
The hinged fire door can be contacted with burner hearth end face, and the burner hearth end face contacted with hinged fire door is equipped with burner hearth frame, institute
It can be carbon fibre materials or molybdenum materials matter to state burner hearth frame 270;The burner hearth pad 310 is equipped with connecting frame 313, the connecting frame 313
Can be carbon fibre materials or molybdenum materials matter;When burner hearth pads 310 closed furnace 200, the connecting frame 313 and the burner hearth frame
270 contacts.
The transverse direction graphite bar 321 and longitudinal graphite bar 322 are the graphite of rectangular cross-section, the lateral stone of graphite material
Ink-stick 321 and longitudinal graphite bar 322 are stablized under high temperature environment, are unlikely to deform.
The burner hearth pad 310 is equipped with multiple fixing pieces, and the multiple fixing piece is arranged on burner hearth pad, and with fever circuit
320 are fixedly linked.
Thus, SmCo magnetic material is placed in burner hearth 200, and closed furnace 200, SmCo magnetic material is heated
When, the fever circuit 320 on three groups of fever circuits 260, burner hearth pad 310 generates heat, SmCo magnetic material it is front and back up and down
Can be heated, burner hearth 200 can be improved in this way and heats the efficiency of product, and SmCo magnetic material can be allowed to be uniformly heated.
Hinged fire door 300 can be made to seal furnace shell 100 by shutdown mechanism, and burner hearth pad 310 can be made to seal burner hearth simultaneously
200。
Furnace shell 100 need to be closed by hinged fire door 300,310 closed furnaces 200 are padded by burner hearth, then pass through vacuum system
System pumps the air of burner hearth 200.
The hinged fire door 300 is equipped with burner hearth pad 310 with closed furnace 200, and the hinged fire door 300 is equipped with stove frame 330,
The both ends of the furnace shell 100 are equipped with 100 end face of furnace shell that can be contacted with stove frame 330, and 100 end face of the furnace shell is sealed equipped with furnace shell
Circle 150, when hinged fire door 300 closes furnace shell 100, the burner hearth pads 310 closed furnaces 200, at this point, the stove frame 330 with
Furnace shell sealing ring 150 is affixed, and the burner hearth pad 310 is affixed with 200 end face of burner hearth.Hinged fire door 300 is synchronous with burner hearth pad 310
It is acted, closes hinged fire door 300,300 closed furnace body of hinged fire door, also closed furnace 200 of burner hearth pad 310.
In this embodiment, the inside of hinged fire door 300 has burner hearth pad 310, and the inside for being hinged fire door 300 is substantially in
Circle, the substantially spherical shape in outside of hinged fire door 300, the furnace body is generally cylindrical, and the burner hearth pad 310 is rectangular,
The burner hearth 200 is hollow cuboid.
The hinged fire door 300 be additionally provided with it is multiple along hinged fire door 300 radially outward and the first latch for forming a circle
340, first latch 340 is in the periphery of stove frame 330.
The shutdown mechanism further includes being sleeved on the cutting ferrule 160 of the furnace shell 100, and the cutting ferrule 160 is equipped with multiple along furnace shell
100 radially inwards and the second latch 161 for forming a circle, second latch 161 it is a pair of with first latch 340 1
It answers, clamping gap is equipped between 100 end face of second latch 161 and the furnace shell, when hinged fire door 300 closes furnace shell 100
When, first latch 340 is in clamping gap.
When closing hinged fire door 300, the first latch 340 is passed through from the slot between the second adjacent latch 161, then
Rotate cutting ferrule 160 so that the second latch 161 is in contact with the first latch 340, and first latch 340 enters the second latch 161
With the clamping gap of 100 end face of furnace shell.
The cutting ferrule 160 is equipped with multiple pulleys 162, and multiple pulleys 162 and the outer wall of the furnace shell 100 can be in rolling contact,
In rotation, the pulley 162 rolls the cutting ferrule 160 on furnace shell 100, and the effect of pulley 162 is to facilitate 160 turns of cutting ferrule
It is dynamic, to facilitate closing to be hinged fire door 300.
When hinged fire door 300 closes furnace shell 100, the cutting ferrule 160 can be by the rolling of pulley 162 in furnace shell
It is rotated on 100 outer wall, first latch 340 is in contact with second latch 161, first latch 340 and second
Latch 161 respectively has contact surface, and the contact surface of first latch, 340 or second latch 161 is inclined-plane.
When first latch 340 and the second latch 161 are in contact, the 161 mutual clamping of the first latch 340 and the second latch.
By sintering furnace sintered samarium cobalt magnetic material, SmCo magnetic material is positioned in burner hearth 200, vacuum system is passed through
Extract the air in furnace shell 100 so that be vacuum state in furnace shell 100.Pass through fever circuit 260, the burner hearth pad in burner hearth 200
Fever circuit 320 on 310 generates heat, and then is heated to SmCo magnetic material, and the heating strip 261 in the circuit 260 that generates heat is equal
It is made of the graphite of tubulose or plate, graphite high temperature resistant is indeformable, also, graphite will not generate shadow to the product of cobalt magnetic material
It rings.
The light reflecting board 250 of burner hearth 200 plays accumulation of heat, and fever circuit, the hair of burner hearth are accumulated by light reflecting board 250
The heat that hot loop generates improves the efficiency of heating SmCo magnetic material and keeps the temperature in burner hearth more uniform.
Pass through the method for sintering furnace sintered samarium cobalt magnetic material, which is characterized in that including step:
SmCo magnetic material is positioned in burner hearth 200 by S1, and pumping the gas in burner hearth 200 makes to reach in advance in burner hearth 200
If vacuum degree;
S2, heat up sintered samarium cobalt magnetic material;After temperature in burner hearth 200 reaches preset temperature, heat preservation sintering SmCo magnetic
Property material, and inert gas is filled with into burner hearth 200, the sintered samarium cobalt magnetic material under the atmosphere of inert gas,;
S3, cooling SmCo magnetic material.
In step S2, before the sintered samarium cobalt magnetic material that heats up, pre-burning SmCo magnetic material, to SmCo magnetic material into
Row electrified regulation is to remove moisture and gasoline.
In step S3, when cooling SmCo magnetic material, left air door 230 is controlled, right air door 240, first commutates wind 120 and the
Two commutation air doors 130 opening and closing, start wind turbine 140 make cooling gas air duct 150, burner hearth 200 and heat exchanger 110 it
Between circulate.
Specifically, when sintering starts, first SmCo magnetic material is pushed into burner hearth 200, stove is pumped by vacuum system
Air in thorax 200, when making to reach the required vacuum degree of production in burner hearth 200, to ensure SmCo magnetic material in sintering
At energy under vacuum conditions.When vacuum degree reaches 1.0 × 10-1When Pa, the low temperature presintering stage is initially entered, to samarium in burner hearth 200
Cobalt magnetic material carries out electrified regulation processing, excludes some remaining moisture and gasoline, vacuum system quickly take exhaust gas away.When
When temperature reaches 400 DEG C~600 DEG C or so, into heating sintering stage, continues to heat SmCo magnetic material, exclude difficult volatilization
Object improves the vacuum degree in burner hearth 200, and temperature reaches 1100~1220 DEG C of progress heat preservation sinterings, is filled with argon gas into stove at this time,
So that SmCo magnetic material is sintered under the atmosphere of inert gas, vacuum degree and temperature is made to keep uniform and stable.
Into cooling stage, left air door 230, the commutation air door 120 and second of right air door 240 first are controlled by cooling system
The opening and closing of commutation air door 130, starting wind turbine 140 makes cooling gas between air duct 150, burner hearth 200 and heat exchanger 110
It circulates.
More specifically, SmCo magnetic material is cooled down by cooling system, it is quick in furnace shell 100 by starting wind turbine 140
It is filled with cooling gas, reaches setting pressure, while right air door 240 is closed, blocks air duct 150, left air door 230 is opened, and wind is opened wide
Road 150, wind turbine 140 start, gas flow approach:As 110 → wind turbine of heat exchanger, 140 → cold air is changed from left air door 230 → the first
It is after a certain period of time (time can set), left to 130 → heat exchanger of the commutation air door of 120 → SmCo of air door magnetic material → second 110
Air door 230 is closed, and air duct 150 is blocked, and right air door 240 is opened, and air duct 150 is opened wide, and changes gas flow approach:Heat exchanger 110
→ wind turbine 140 → right air door 240 → the second commutates the commutation 120 → heat exchanger of air door of 130 → SmCo of air door magnetic material → first
110, keep left air door 230 and the alternately opening and closing of right air door 240 in this way so that cooling gas commutation cycle, SmCo magnetism material
Expect each position cooling evenly, deformation is small, and cooling velocity is faster.
When SmCo magnetic material is cooled to certain temperature, SmCo magnetic material can be taken out.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (13)
1. a kind of sintering furnace of sintered samarium cobalt magnetic material, which is characterized in that including furnace body and cooling system;
The burner hearth that the furnace body includes furnace shell, is arranged in furnace shell;The both ends of furnace shell are respectively arranged with fixed fire door, hinged stove
The inside of door, the hinged fire door is equipped with the burner hearth pad for closed furnace;
The burner hearth lean to one side be equipped with left ventilation opening and right ventilation opening, the burner hearth be additionally provided be respectively used to close left ventilation opening,
The left air door and right air door of right ventilation opening, the inner wall of the burner hearth, which is equipped with, is covered each by left ventilation opening and the left light of right ventilation opening is anti-
Penetrate plate and right light reflecting board;The air duct passed through with air feed between the burner hearth and furnace shell, when left air door and right door opening,
Burner hearth is connected to air duct;The burner hearth is equipped with the first burner hearth electrode, the second burner hearth electrode, third burner hearth for being distributed in inboard wall of burner hearth
Electrode and three groups of fever circuits being made of plate or tubular graphene, one group of fever connection the first burner hearth electrode and the second stove
Thorax electrode, one group of fever connection the second burner hearth electrode and third burner hearth electrode, one group of fever connection the first burner hearth electricity
Pole and third burner hearth electrode;
The burner hearth pad is equipped with the first burner hearth pad electrode, the second burner hearth pad electrode and is returned by the fever that plate or tubular graphene are constituted
Road, the fever circuit connects the first burner hearth pad electrode and the second burner hearth pads electrode;
The cooling system includes the wind turbine in furnace shell and the heat exchanger in furnace shell, between the heat exchanger and burner hearth
With interval;The interval both ends be respectively provided with can with furnace shell movable contact and then change the first of flow direction of the wind on air duct and change
To air door and the second commutation air door, the heat exchanger is between wind turbine and burner hearth.
2. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 1, it is characterised in that:The fever circuit
Including multiple lateral graphite bars and multiple longitudinal graphite bars, the multiple transverse direction graphite bar is connected with the multiple longitudinal graphite bar
Make the fever circuit at a series loop, the both ends in the fever circuit are separately connected the first burner hearth pad electrode and the second stove
Thorax pads electrode.
3. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 2, it is characterised in that:The furnace body is also set
There are three electrode connecting structures, and the electrode connecting structure includes ceramic tube, graphite electrode and mains connection;The ceramic tube
Across burner hearth side wall and stretch into burner hearth;The graphite electrode is in ceramic tube, and both ends are stretched out from the both ends of ceramic tube;
The graphite electrode of three electrode connecting structures is respectively the first burner hearth electrode, the second burner hearth electrode and third burner hearth electrode.
4. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 3, it is characterised in that:The inboard wall of burner hearth
Equipped with upper inner wall, lower inner wall, left inside wall and right inner wall;The first burner hearth electrode setting is in upper inner wall, the second burner hearth electricity
Pole setting is arranged in the left inside wall, the third burner hearth electrode in the right inner wall.
5. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 4, it is characterised in that:Every group of fever circuit
Including multiple graphite-pipes and multiple graphite blocks, the multiple graphite-pipe is spaced and parallel to be set to the inboard wall of burner hearth;Adjoining graphite
Pipe is concatenated by graphite block head and the tail;The total length of graphite-pipe in every group of fever circuit is consistent, each graphite-pipe both ends
Outer diameter is less than the outer diameter at position among the graphite-pipe.
6. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 5, it is characterised in that:The fever circuit
In lateral graphite bar, longitudinal graphite bar section be rectangle.
7. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 1, it is characterised in that:The light reflecting board
Equipped with a plurality of gap arranged in parallel divulged information.
8. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 1, it is characterised in that:The electrode connection
Structure further includes the mains connection being connected with graphite electrode, and the mains connection includes copper bar, connector and conductive seat, institute
State connector connection copper bar and graphite electrode;The conductive seat connects copper bar, and is pierced by between furnace shell and burner hearth to outside furnace shell;
The connector can be molybdenum block or tungsten block.
9. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 1, it is characterised in that:The furnace body is also set
There are four cylinders for respectively driving left air door, right air door, the first commutation air door, the second commutation air door;The cooling system passes through
Control each cylinder it is flexible come control left air door, right air door, first commutation door and second commutation air door opening and closing.
10. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 9, it is characterised in that:The cylinder packet
Include cylinder barrel and piston rod;The piston rod is telescopic to be arranged in cylinder barrel, and the free end of piston rod is stretched into sintering furnace, described
There is annular space between first cylinder seal circle and the second sealing cylinder circle;The cylinder barrel is equipped with and is connected to the annular space
Vacuumize hole.
11. a kind of method of sintered samarium cobalt magnetic material is sintered samarium by sintering furnace as described in any one of claim 1 to 10
Cobalt magnetic material, which is characterized in that including step:
SmCo magnetic material is positioned in burner hearth by S1, and pumping the gas in burner hearth makes to reach predetermined vacuum degree in burner hearth;
S2, heat up sintered samarium cobalt magnetic material;After temperature in burner hearth reaches preset temperature, heat preservation sintering SmCo magnetic material,
And it is filled with inert gas into burner hearth and makes SmCo magnetic material heat preservation sintering preset time under the atmosphere of inert gas;
S3, cooling SmCo magnetic material.
12. a kind of method of sintered samarium cobalt magnetic material according to claim 11, it is characterised in that:In step S2,
Heat up sintered samarium cobalt magnetic material before, pre-burning SmCo magnetic material, SmCo magnetic material is heated with remove moisture and
Gasoline.
13. a kind of method of sintered samarium cobalt magnetic material according to claim 12, it is characterised in that:It is cold in step S3
But when SmCo magnetic material, the opening and closing of left air door, the commutation air door of right air door first and the second commutation air door is controlled, are started
Wind turbine makes cooling gas be circulated between air duct, burner hearth and heat exchanger.
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CN109595928A (en) * | 2018-12-13 | 2019-04-09 | 宁夏昇力恒真空设备有限公司 | The mini type high temperature vacuum sintering furnace of separation thermal field is set |
CN109595927A (en) * | 2018-12-13 | 2019-04-09 | 宁夏昇力恒真空设备有限公司 | The mini type high temperature sintering furnace of translation rotation convolution fire door is set |
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CN2674295Y (en) * | 2003-11-21 | 2005-01-26 | 北京七星华创电子股份有限公司 | High-temp reaction fritting furnace |
CN101655310A (en) * | 2009-09-18 | 2010-02-24 | 沈阳恒进真空科技有限公司 | Protective atmosphere vacuum sintering furnace with high temperature of 1800 DEG C |
CN204707299U (en) * | 2015-01-23 | 2015-10-14 | 江苏兆明信息材料有限公司 | A kind of high-power heater of graphite of carbon shirt-circuiting furnace |
CN106350649A (en) * | 2016-11-08 | 2017-01-25 | 湖南顶立科技有限公司 | Isostatic pressing gas quenching equipment |
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CN109595928A (en) * | 2018-12-13 | 2019-04-09 | 宁夏昇力恒真空设备有限公司 | The mini type high temperature vacuum sintering furnace of separation thermal field is set |
CN109595927A (en) * | 2018-12-13 | 2019-04-09 | 宁夏昇力恒真空设备有限公司 | The mini type high temperature sintering furnace of translation rotation convolution fire door is set |
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