CN208026057U - A kind of sintering furnace of sintered samarium cobalt magnetic material - Google Patents

Abstract

The utility model discloses a kind of sintering furnace of sintered samarium cobalt magnetic material, which is characterized in that including furnace body, the furnace body includes furnace shell and the burner hearth that is arranged in furnace shell；The both ends of furnace shell are respectively arranged with fixed fire door, hinged fire door；The burner hearth includes the first burner hearth electrode, the second burner hearth electrode and third burner hearth electrode for being distributed in inboard wall of burner hearth；The burner hearth further includes three groups of fever circuits being made of tubulose or plate shaped graphite pipe；The fever circuit that the burner hearth pad is equipped with the first burner hearth pad electrode, the second burner hearth pads electrode and is made of tubulose or plate shaped graphite pipe, the fever circuit connects the first burner hearth pad electrode and the second burner hearth pads electrode.The utility model heats the front and back up and down of SmCo magnetic material by the fever circuit being distributed on the power generation circuit and burner hearth pad of inner wall on burner hearth, lower inner wall, left inside wall and right inner wall so that SmCo magnetic material is heated evenly.

Description

A kind of sintering furnace of sintered samarium cobalt magnetic material

Technical field

The utility model is related to sintering furnace technical field more particularly to a kind of sintering furnaces of sintered samarium cobalt magnetic material.

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.But during heating, product is in heating room, and product cannot be by The heating of front and back all directions up and down so that product is heated very uneven, can influence heating of the sintering furnace to product in this way Efficiency, while the quality of product can be influenced.

Invention content

The technical problem to be solved by the utility model is to for the above-mentioned deficiency of the prior art, propose a kind of heating The sintering furnace of uniform sintered samarium cobalt magnetic material.

The utility model solves its technical problem the technical solution adopted is that a kind of sintering furnace of sintered samarium cobalt magnetic material, It is characterised in that it includes：

Furnace body, including furnace shell and the burner hearth that is arranged in furnace shell；

The burner hearth include the first burner hearth electrode for being distributed in inboard wall of burner hearth, the second burner hearth electrode, third 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 burner hearth electricity Pole, one group of fever connection the second burner hearth electrode and third burner hearth electrode, one group of fever connection the first burner hearth electrode and Third burner hearth electrode；

Furnace shell both ends are respectively arranged with fixed fire door, hinged fire door；The inside of the hinged fire door, which is equipped with, is used for closed furnace The burner hearth pad of thorax；The burner hearth pad is equipped with the first burner hearth pad electrode, the second burner hearth pad electrode and is made of plate or tubular graphene Fever circuit, the fever circuit connects the first burner hearth pad electrode and the second burner hearth pads electrode.

Preferably, 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 electrode Setting is in upper inner wall, and the second burner hearth electrode setting is in the left inside wall, and the third burner hearth electrode setting is in the right side Wall.

Preferably, every group of fever circuit includes multiple graphite-pipes and multiple graphite blocks, and the multiple graphite-pipe is spaced and parallel It is set to inboard wall of burner hearth, is concatenated by graphite block head and the tail between adjoining graphite pipe.

Preferably, the graphite-pipe total length in fever circuit described in every group is consistent, and the length of each graphite block is identical.

Preferably, the outer diameter at each graphite-pipe both ends is less than the outer diameter at position among the cylindrical graphite pipe.

Preferably, 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, the burner hearth frame are carbon fibre materials or molybdenum materials matter.

Preferably, the fever circuit includes multiple lateral graphite bars and multiple longitudinal graphite bars, the multiple transverse direction stone Ink-stick is connected with the multiple longitudinal graphite bar makes the fever circuit be in a series loop.

Preferably, the fever circuit is symmetrical, and the gap between adjacent longitudinal direction graphite bar is equal.

Preferably, the lateral graphite bar and longitudinal graphite bar are the graphite of rectangular cross-section.

Preferably, the burner hearth pad is equipped with connecting frame, and the connecting frame is carbon fibre materials or molybdenum materials matter；When burner hearth pad seals When closed furnace thorax, the connecting frame and the burner hearth bezel contact.

The utility model is by being distributed in inner wall on burner hearth, lower inner wall, left inside wall and the power generation circuit and burner hearth of right inner wall Fever circuit on pad is heated by the front and back up and down of product so that product is heated evenly.

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

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

Please refer to Fig. 1-Fig. 8, a kind of sintering furnace of sintered samarium cobalt magnetic material of the utility model, sintering furnace 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.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (10)

1. a kind of sintering furnace of sintered samarium cobalt magnetic material, which is characterized in that including：

Furnace body, including furnace shell and the burner hearth that is arranged in furnace shell；

The burner hearth includes the first burner hearth electrode for being distributed in inboard wall of burner hearth, the second burner hearth electrode, third burner hearth electrode and three groups The fever circuit being made of plate or tubular graphene, one group of fever connection the first burner hearth electrode and the second burner hearth electrode, one Group fever connection the second burner hearth electrode and third burner hearth electrode, one group of fever connection the first burner hearth electrode and third stove Thorax electrode；

The both ends of furnace shell are respectively arranged with fixed fire door, hinged fire door；The inside of the hinged fire door, which is equipped with, is used for closed furnace Burner hearth pad；The burner hearth pad is equipped with the first burner hearth pad electrode, the second burner hearth pad electrode and is made of plate or tubular graphene Generate heat circuit, and the fever circuit connects the first burner hearth pad electrode and the second burner hearth pads electrode.

2. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 1, 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.

3. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 2, 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 inboard wall of burner hearth, adjoining graphite pipe it Between pass through graphite block head and the tail concatenate.

4. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 3, it is characterised in that：It generates heat described in every group Graphite-pipe total length in circuit is consistent, and the length of each graphite-pipe is identical.

5. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 4, it is characterised in that：Each graphite The outer diameter at pipe both ends 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 1, it is characterised in that：The hinged fire door It can be contacted with burner hearth end face, the burner hearth end face contacted with hinged fire door is equipped with burner hearth frame, and the burner hearth frame is carbon fiber material Matter or molybdenum materials matter.

7. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 3, 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 It is in a series loop to make the fever circuit.

8. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 7, it is characterised in that：The fever circuit Symmetrical, the gap between adjacent longitudinal direction graphite bar is equal.

9. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 7, it is characterised in that：The transverse direction graphite Item and longitudinal graphite bar are the graphite of rectangular cross-section.

10. a kind of sintering furnace of sintered samarium cobalt magnetic material according to claim 6, it is characterised in that：The burner hearth pad Equipped with connecting frame, the connecting frame is carbon fibre materials or molybdenum materials matter；When burner hearth pad closed furnace when, the connecting frame with it is described Burner hearth bezel contact.