CN209689366U - A kind of magnetic material vacuum sintering furnace - Google Patents
A kind of magnetic material vacuum sintering furnace Download PDFInfo
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- CN209689366U CN209689366U CN201822271548.6U CN201822271548U CN209689366U CN 209689366 U CN209689366 U CN 209689366U CN 201822271548 U CN201822271548 U CN 201822271548U CN 209689366 U CN209689366 U CN 209689366U
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Abstract
The utility model discloses magnetic material vacuum sintering furnaces, the vacuum nozzle for vacuumizing is equipped on furnace shell and flue, the front end of furnace shell is equipped with preceding fire door, rear end is equipped with rear fire door, the outside of furnace shell is equipped with cooling body for cooling to sintering furnace, cooling body includes cooling pipe, heat-conducting layer is had on the inner wall of cooling pipe for exporting the heat in flue, the centre of cooling pipe is formed with the cooling chamber for conveying cooling medium, the inside of furnace shell is equipped with insulating layer, and the inner surface of the insulating layer and furnace shell keeps gap, the inside bottom of flue sets material rack, heating component is installed on the inner wall of flue.Cooling pipe is spirally wound on the outer wall of furnace shell, and the heat being in contact with furnace shell is quickly directed into the outside of cooling chamber and sintering furnace by the heat-conducting layer that cooling pipe inner wall or more is arranged in, and is shortened the cooling time of sintering furnace, is improved the cooling efficiency of sintering furnace.
Description
Technical field
The utility model belongs to sintering furnace equipment technical field, more particularly, to a kind of magnetic material vacuum sintering furnace.
Background technique
In process of production, neodymium iron boron blank will be that magnet shrinks and densifies by vacuum-sintering to neodymium iron boron magnetic body, from
And density and every magnetic property is made to reach requirement.The vacuum-sintering of magnetic material generallys use vacuum sintering furnace.
Vacuum sintering furnace is to utilize the originals such as resistance heating or electric-heating-wire-heating in vacuum or under conditions of full of protective gas
Reason is the complete set of equipments that various metal powder press bodies realize sintering, particularly suitable for the sintering of the sensitive materials such as magnetic material,
After high temperature, sintered products need to be cooled down, be come out of the stove after reaching room temperature, cooling velocity is evaluate vacuum sintering furnace one
Item important indicator, at work, internal temperature can achieve more than 1,000 degrees Celsius to vacuum sintering furnace, it usually needs be cooled to
Defined 100 degrees Celsius hereinafter, since the product in vacuum sintering furnace is sintered under vacuum, in order to guarantee the product of product
Matter, cooling are cannot to open fire door, and therefore, the speed of vacuum sintering furnace natural cooling is very slow, largely effect on production efficiency.
In addition, the mode of interior heating can be used in the existing sintering furnace for neodymium iron boron magnetic body processing, heating element is located at heating room
Surrounding, cannot achieve by way of gaseous exchange and conduction well it is thermally conductive so that each region temperature difference is larger in furnace, cause
The magnetic property gap of whole furnace product is obvious, and the product finally processed fails to meet production requirements.
In use, since the heating temperature of the heating element of furnace inner cylinder is consistent, and heating power can be leaned on to cylinder
The inner sidewall of close over rises aggregation, so that the inside wall temperature of cylinder is higher, it is low to form the upper relative superiority or inferiority of in-furnace temperature distribution
Phenomenon causes the heating power wasting of resources, and is difficult to ensure that the magnetic property of neodymium iron boron magnetic body is consistent, reduces sintering efficiency.
Utility model content
Simple, easy to operate, heating temperature that the purpose of the utility model is to provide a kind of structures is evenly distributed, is cooling in furnace
Speed is fast, high production efficiency magnetic material vacuum sintering furnace.
The technical solution of the utility model is as follows:
A kind of magnetic material vacuum sintering furnace, it is characterised in that: including furnace shell and the flue being arranged in inside furnace shell, institute
It states and is formed with gap between furnace shell and flue, the vacuum nozzle for vacuumizing, the furnace are equipped on the furnace shell and flue
The front end of shell is equipped with preceding fire door, and rear end is equipped with rear fire door, and cooling body is equipped with outside the furnace shell for cooling to sintering furnace
Cooling, the cooling body includes two groups of cooling pipes being staggered, and is respectively equipped with import at the both ends of every group of cooling pipe
With outlet, the top of furnace shell is arranged in the import of one group of cooling pipe, and the bottom of furnace shell is arranged in outlet, and the import passes through pipe
Road and pump connect, and the bottom of furnace shell is arranged in the import of another group of cooling pipe, and the top of furnace shell, the furnace shell is arranged in outlet
Inside be equipped with insulating layer, and the inner surface of the insulating layer and furnace shell keeps gap, and the inside bottom of the flue sets material rack,
The both ends of the material frame are vertically arranged with fixed baffle, and the bottom of the material frame is equipped with guide rail, is slidably fitted on guide rail
Multiple flappers, the bottom installation positioning piece of each flapper are described with the position for being fixed on guide rail
Heating component is installed for being evenly heated to flue on the inner wall of flue.
In the above-mentioned technical solutions, the cooling pipe is spirally wound on outside furnace shell.
In the above-mentioned technical solutions, check valve is equipped in the import and outlet.
In the above-mentioned technical solutions, the locating piece is clamping screw, and one and positioning are formed on the bottom of the flapper
The threaded hole that part matches.
In the above-mentioned technical solutions, the heating component includes heating tube and heating sheet, and S-type spiral of the heating tube sets
It sets on inboard wall of furnace, the heating sheet is evenly distributed in heating tube.
In the above-mentioned technical solutions, the height of the heating tube is higher than the height of the material frame.
In the above-mentioned technical solutions, the blow vent in the gap across furnace shell and flue, institute are additionally provided on the furnace shell
The external connection air pump of blow vent is stated for conveying cooling gas into furnace shell.
In the above-mentioned technical solutions, the outside of the furnace shell is equipped with controller, and the inside of the flue is equipped with temperature sensing
Device, the controller are electrically connected with temperature sensor.
In the above-mentioned technical solutions, vaccum seal ring is equipped on the contact surface of the preceding fire door, rear fire door and furnace shell.
In the above-mentioned technical solutions, the bottom of the furnace shell is equipped with supporting leg.
The utility model has the advantages and positive effects of:
1. cooling pipe is spirally wound on the outer wall of furnace shell, and cooling pipe is located at outside furnace shell, when needing cooling,
Cooling medium is passed through into cooling pipe quickly to disperse the heat in furnace shell, shortens the cooling time of sintering furnace, and expecting
The adjustable baffle in position is provided on frame, preferably the magnetic blank of positioning sintering.
2. S-type spiral of heating component is arranged on the inner wall of flue, to flue inside homogeneous heating, avoid the occurrence of in furnace
The low phenomenon of relative superiority or inferiority in Temperature Distribution is not in the heating power wasting of resources.
3. conveying cooling inert gas into furnace shell by blow vent, and cooperate the cooling pipe outside furnace shell, to sintering
The magnet structure of the inside and outside synchronous cooling of furnace, inert gas shielding sintering is stablized, and improves the cooling efficiency of sintering furnace.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the vacuum sintering furnace for magnet of the utility model；
Fig. 2 is the side view that frame is expected in the utility model；
Fig. 3 is the bottom view that frame is expected in the utility model；
Fig. 4 is the structural schematic diagram of heating mechanism in the utility model.
In figure:
1, cooling body 2, furnace shell 3, flue
4, rear fire door 5, material frame 6, heating component
7, pump 8, outlet 9, supporting leg
10, blow vent 11, ventilation pump 12, preceding fire door
13, insulating layer 14, fixed baffle 15, import
16, flapper 17, check valve 18, heating sheet
19, heating tube 20, guide rail 21, locating piece
Specific embodiment
The utility model is described in further detail below in conjunction with specific embodiment.It should be appreciated that described herein
Specific embodiment is used only for explaining the utility model, is not used to limit the utility model, is never limited in the utility model
Protection scope.
Embodiment 1
As shown in Figure 1-3, the magnetic material vacuum sintering furnace of the utility model, including furnace shell 2 and setting are in furnace shell 2
The flue 3 in portion is formed with gap, the vacuum tube for vacuumizing is equipped on furnace shell 2 and flue 3 between furnace shell 2 and flue 3
Mouthful, the front end of furnace shell 2 is equipped with preceding fire door 12, and rear end is equipped with rear fire door 4, and the outside of furnace shell 2 is equipped with cooling body 1 for burning
Freezing of a furnace cools, and cooling body 1 includes two groups of cooling pipes being staggered, and two groups of cooling pipes are respectively screw and are wrapped in furnace
2 outside of shell, in order to cooling work is carried out in vacuum sintering furnace, enhance the cooling velocity of vacuum sintering furnace, every group of cooling tube
The both ends in road are respectively equipped with import 15 and outlet 8, and the top of furnace shell 2, and the import is arranged in the import 15 of one group of cooling pipe
15 are connect by pipeline with pump 7, and the bottom of furnace shell 2 is arranged in outlet 8, and furnace shell 2 is arranged in the import of another group of cooling pipe
The top of furnace shell is arranged in bottom, outlet, and for conveying cooling medium in cooling pipe, the inside of furnace shell 2 is equipped with insulating layer
13, and the inner surface of the insulating layer 13 and furnace shell 2 keeps gap, the inside bottom of flue 3 sets material rack 5 for holding support
The magnet blank being sintered expects that the both ends of frame are vertically arranged with fixed baffle 14, expects that the bottom of frame is equipped with guide rail 20, in guide rail
Multiple flappers 14 (quantity of flapper 14 is at least 4), the bottom of each flapper 14 are slidably fitted on 20
Positioning piece 21 is installed with the position for being fixed on guide rail 20, be equipped on the inner wall of flue 3 heating component 6 with for pair
Flue 3 is evenly heated.
It further says, locating piece 21 uses clamping screw, forms one and clamping screw phase in the bottom of flapper 14
The threaded hole of cooperation, so that position of the more stable positioning flapper 14 of clamping screw on guide rail 20, according to magnet base
The size of material adjusts the position of flapper 14.
It further says, cooling water or cooling inert gas can be used in the cooling medium conveyed into cooling pipe.
Above-mentioned flue 3 is rectangle or cylindrical shape, and S-type spiral of heating component 6 is arranged on 3 inner wall of flue, wherein heating
Component 6 includes heating tube 19 and heating sheet 18, and heating sheet 18 is evenly distributed in heating tube 19, and the height of heating tube 19 is higher than material
The height of frame 5 in order to material frame 5 on magnet blank be evenly heated, it is ensured that magnet is heated evenly, and avoids formation temperature in furnace
The low phenomenon of relative superiority or inferiority in distribution, the magnetic property to guarantee neodymium iron boron magnetic body is consistent, improves the sintering efficiency of magnet.
It is additionally provided with the blow vent 10 in the gap across furnace shell 2 and flue 3 on above-mentioned furnace shell 2, outside blow vent 10 in succession
Ventilation pump 11 is for conveying cooling gas into furnace shell 2.
It further says, check valve 17 is equipped in import 15 and outlet 8, and check valve 17 uses solenoid valve.
The course of work of the utility model is as follows:
Magnet blank is put on the material frame 5 of flue 3 by fire door 12 before opening, and adjusts activity according to the size of magnet blank
Flapper 14 is locked in guide rail by locating piece 21 later in order to clamp magnet blank in position of the baffle 14 on material frame 5
On position, fire door 12 before closing is filled with inert gas into flue 3 by blow vent 10, then by furnace shell 2 and flue 3
On vacuum nozzle the internal air exhausting of sintering furnace is formed into vacuum state, start heating component 6 later and heat, to be reached in flue 3
To after required vacuum degree, so that magnet blank is sintered, insulating layer 13 plays good heat insulation effect to sintering furnace heating temperature,
Heat loss is reduced, after the completion of sintering, the solenoid valve in import 15 is opened, is delivered to cooling medium under the action of pumping 7
In cooling pipe, cooling pipe is located at the lower section of insulating layer 13, can cool down to the inside of sintering furnace, into cooling pipe
Cooling medium effect is conveyed, the cooling pipe of spiral winding increases film-cooled heat, to realize the rapid cooling to sintering furnace, passes through
Blow vent 10 conveys cooling inert gas into furnace shell 2, is cooled down with the inside to sintering furnace.
The cooling pipe water inlet being staggered staggeredly enters to outside sintering furnace with water outlet, cooling inert gas and cooling pipe
Cooperation synchronous cooling, to cooling down inside and outside sintering furnace, shortens the cold of magnet blank in the case where not opening sintering furnace
But the magnet structure of time, sintering are stablized, and processing effect is good.
Embodiment 2
On the basis of embodiment 1, the outside of furnace shell 2 is equipped with controller, and the inside of flue 3 is equipped with temperature sensor, control
Device processed is electrically connected with temperature sensor, and controller detects the heating temperature inside flue 3 by temperature sensor, guarantees sintering furnace
Normal heating operation.
It is equipped with vaccum seal ring on the contact surface of above-mentioned preceding fire door 12, rear fire door 4 and furnace shell 2, to guarantee sintering furnace
Leakproofness is strong, and fire door temperature sensor is equipped on preceding fire door 12, avoids temperature scald staff excessively high on fire door.
Embodiment 3
On the basis of embodiment 1, the bottom of furnace shell 2 is equipped with supporting leg 9, to improve the stability of sintering furnace.
The spatially relative terms such as "upper", "lower", "left", "right" have been used in embodiment for ease of explanation, have been used for
Relationship of the elements or features relative to another elements or features shown in explanatory diagram.It should be understood that in addition to figure
Shown in except orientation, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure
Device be squeezed, the element for being stated as being located at other elements or feature "lower" will be located into other elements or feature "upper".
Therefore, exemplary term "lower" may include both upper and lower orientation.Device, which can be positioned in other ways, (to be rotated by 90 ° or position
In other orientation), it can be interpreted accordingly used herein of the opposite explanation in space.
Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relationship or
Sequentially.
One embodiment of the utility model is described in detail above, but the content is only the utility model
Preferred embodiment should not be considered as limiting the scope of the present invention.It is all to be made according to application scope of the utility model
Equivalent variations and improve etc., should still belong within the patent covering scope of the utility model.
Claims (10)
1. a kind of magnetic material vacuum sintering furnace, it is characterised in that: described including furnace shell and the flue being arranged in inside furnace shell
It is formed with gap between furnace shell and flue, the vacuum nozzle for vacuumizing, the furnace shell are equipped on the furnace shell and flue
Front end be equipped with preceding fire door, rear end is equipped with rear fire door, and cooling body is equipped with outside the furnace shell for dropping to sintering furnace is cooling
Temperature, the cooling body include two groups of cooling pipes being staggered, the both ends of every group of cooling pipe be respectively equipped with import with
The top of furnace shell is arranged in outlet, the import of one group of cooling pipe, and the bottom of furnace shell is arranged in outlet, and the import passes through pipeline
It is connected with pump, the bottom of furnace shell is arranged in the import of another group of cooling pipe, and the top of furnace shell is arranged in outlet, the furnace shell
Inside is equipped with insulating layer, and the inner surface of the insulating layer and furnace shell keeps gap, and the inside bottom of the flue sets material rack, institute
The both ends for stating material frame are vertically arranged with fixed baffle, and the bottom of the material frame is equipped with guide rail, is slidably fitted on guide rail more
A flapper, the bottom installation positioning piece of each flapper is with the position for being fixed on guide rail, the furnace
Heating component is installed for being evenly heated to flue on the inner wall of gallbladder.
2. magnetic material vacuum sintering furnace according to claim 1, it is characterised in that: the cooling pipe spiral winding
Outside furnace shell.
3. magnetic material vacuum sintering furnace according to claim 1, it is characterised in that: be all provided in the import and outlet
There is check valve.
4. magnetic material vacuum sintering furnace according to claim 1, it is characterised in that: the locating piece is locking screw
One threaded hole matched with locating piece is formed on bolt, the bottom of the flapper.
5. magnetic material vacuum sintering furnace described in any one of -4 according to claim 1, it is characterised in that: the heating
Component includes heating tube and heating sheet, and S-type spiral of the heating tube is arranged on inboard wall of furnace, and the heating sheet is uniformly distributed
In heating tube.
6. magnetic material vacuum sintering furnace according to claim 5, it is characterised in that: the height of the heating tube is higher than
The height of the material frame.
7. magnetic material vacuum sintering furnace according to claim 6, it is characterised in that: be additionally provided on the furnace shell across
The blow vent in the gap between furnace shell and flue, the external connection air pump of blow vent is for conveying cooling air into furnace shell
Body.
8. magnetic material vacuum sintering furnace according to claim 7, it is characterised in that: the outside of the furnace shell is equipped with control
The inside of device processed, the flue is equipped with temperature sensor, and the controller is electrically connected with temperature sensor.
9. magnetic material vacuum sintering furnace according to claim 8, it is characterised in that: the preceding fire door, rear fire door with
Vaccum seal ring is equipped on the contact surface of furnace shell.
10. magnetic material vacuum sintering furnace according to claim 9, it is characterised in that: the bottom of the furnace shell is equipped with
Supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822271548.6U CN209689366U (en) | 2018-12-29 | 2018-12-29 | A kind of magnetic material vacuum sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822271548.6U CN209689366U (en) | 2018-12-29 | 2018-12-29 | A kind of magnetic material vacuum sintering furnace |
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| CN209689366U true CN209689366U (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822271548.6U Active CN209689366U (en) | 2018-12-29 | 2018-12-29 | A kind of magnetic material vacuum sintering furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414141A (en) * | 2020-11-26 | 2021-02-26 | 东莞市中汉磁材科技有限公司 | Sintering furnace for producing strong magnetic products and using method thereof |
| CN112595115A (en) * | 2020-12-02 | 2021-04-02 | 新沂市华洋金属制品有限公司 | Temperature control type sintering furnace for controlling production environment and working method thereof |
| CN113932608A (en) * | 2021-11-05 | 2022-01-14 | 合肥陶陶新材料科技有限公司 | Sintering furnace for ceramic parts and using method thereof |
| CN117091398A (en) * | 2023-10-17 | 2023-11-21 | 太原开元智能装备有限公司 | Tubular induction heating sintering furnace |
-
2018
- 2018-12-29 CN CN201822271548.6U patent/CN209689366U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414141A (en) * | 2020-11-26 | 2021-02-26 | 东莞市中汉磁材科技有限公司 | Sintering furnace for producing strong magnetic products and using method thereof |
| CN112595115A (en) * | 2020-12-02 | 2021-04-02 | 新沂市华洋金属制品有限公司 | Temperature control type sintering furnace for controlling production environment and working method thereof |
| CN113932608A (en) * | 2021-11-05 | 2022-01-14 | 合肥陶陶新材料科技有限公司 | Sintering furnace for ceramic parts and using method thereof |
| CN117091398A (en) * | 2023-10-17 | 2023-11-21 | 太原开元智能装备有限公司 | Tubular induction heating sintering furnace |
| CN117091398B (en) * | 2023-10-17 | 2024-01-19 | 太原开元智能装备有限公司 | Tubular induction heating sintering furnace |
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