CN208178420U - High-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace - Google Patents
High-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace Download PDFInfo
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- CN208178420U CN208178420U CN201820628161.9U CN201820628161U CN208178420U CN 208178420 U CN208178420 U CN 208178420U CN 201820628161 U CN201820628161 U CN 201820628161U CN 208178420 U CN208178420 U CN 208178420U
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Abstract
The utility model relates to a kind of Rare Metals Materials production equipments, specifically a kind of high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace, including furnace shell, flue, pumped vacuum systems, inflation system, blower heat-exchange system, PLC electric-control system and power-supply system, flue is set in furnace shell, heating component is equipped with inside the flue, insulating is equipped on the inboard wall of furnace, the flue is equipped with openable air door, and heater is installed in the inside sidewalls that the flue is not provided with air door, in addition the temperature control device for detecting temperature is equipped in the flue, it is vacuumized in furnace shell by the pumped vacuum systems, and cooling gas is injected by the inflation system, blower heat-exchange system is set on furnace shell, and cooling gas drives fluid interchange by the blower heat-exchange system.The utility model is able to achieve the high-efficiency sintered of Rare Metals Materials especially refractory metal and rare-earth permanent magnet (such as: NdFeB, SmCo), greatly improves the quality of sintered products.
Description
Technical field
The utility model relates to a kind of Rare Metals Materials production equipment, specifically a kind of rare gold of high-efficiency and energy-saving type
Belong to material vacuum sintering furnace.
Background technique
Sintering is to prepare the main method of refractory metal material at present, and the preparation process of Rare Metals Materials is usually to make
Powder-molding-sintering-heat treatment-following process molding, wherein with the fast development of IT technology and intelligent control technology,
Metal material (especially rare metal) sintering at present is substantially to be completed under vacuum conditions, and vacuum-sintering has become metal
One of the conventional means of (especially rare earth metal) are sintered, the material prepared under these conditions either non-oxidation index is still
The performance of material is all greatly improved, this has great help for improving the competitiveness of product in market.
Vacuum-sintering, which refers to, is heated to certain temperature for pre-prepared metal embryo material in vacuum environment, and passes through metal material
Expect that the warm-up movement of molecule itself finally prepares the technology of finished product, has high want to vacuum degree and temperature stability
It asks, for Rare Metals Materials (such as the permanent-magnet materials such as NdFeB neodymium iron boron, SmCo SmCo), in sintering process
In vacuum degree (absolute pressure), Pressure Rise Rate, the indexs slightly mistake such as uniform temperature zone temperature stability can all finished-product material be caused to be closed
Bond parameter generates great difference, fails to meet production requirements so as to cause final products.Sustainable development now with technology and
Market competition is more and more fierce, and each manufacturer constantly uses technological means to improve vacuum-sintering equipment, on the one hand
Consider to be continuously improved relevant parameter index during vacuum-sintering, on the other hand it is also contemplated that how to shorten the process time, subtract
Small labor intensity.
Utility model content
The purpose of this utility model is to provide a kind of high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnaces, are able to achieve dilute
There is a high-efficiency sintered of metal material especially refractory metal and rare-earth permanent magnet (such as: NdFeB, SmCo), it is temperature uniformity, cold
But speed and cooling uniformity are above national standard, greatly improve the quality of sintered products, and effectively shorten the process time, drop
Low labor intensity.
The purpose of this utility model is achieved through the following technical solutions:
A kind of high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace, including furnace shell, flue, pumped vacuum systems, inflation system
System, blower heat-exchange system, PLC electric-control system and power-supply system, flue are set in furnace shell, and heating group is equipped with inside the flue
Part is equipped with insulating on the inboard wall of furnace, and the flue is equipped with openable air door, and does not have in the flue
There are the inside sidewalls of setting air door that heater is installed, the temperature control device for detecting temperature be in addition equipped in the flue,
It is vacuumized in furnace shell by the pumped vacuum systems, and cooling gas is injected by the inflation system, blower heat-exchange system is set
It is placed on furnace shell, and cooling gas drives fluid interchange by the blower heat-exchange system.
The heating component includes multiple evenly distributed calandrias.
The calandria is frame-shaped, and frame side shape is plate, rodlike or band-like.
The temperature control device includes multiple thermocouples, and each thermocouple is uniformly distributed along flue length direction.
The flue rear and front end is closed end, the left and right sides equipped with opening, and in the flue front and rear end walls
Equipped with heater, openable air door is equipped in the flue left and right sides opening.
The flue front and back end is equipped with port, the left and right sides and closes, and is equipped with and can open at the flue front and back end ports
Air door, be equipped with heater on the inner wall of described flue or so closed side.
The advantages of the utility model and good effect are as follows:
1, the utility model be able to achieve Rare Metals Materials especially refractory metal and rare-earth permanent magnet (such as: NdFeB,
SmCo high-efficiency sintered), temperature uniformity, cooling velocity and cooling uniformity are above national standard, greatly improve sintering and produce
The quality of product, and effectively shorten the process time, reduce labor intensity.
2, heating component of the utility model in flue includes multiple evenly distributed calandrias, and the calandria can root
Corresponding frame like structure is designed to according to flue shape, and frame side shape can be plate, rodlike or band-like, material can be tungsten, molybdenum, stone
Ink, to guarantee to be evenly heated in flue, in addition the temperature control device of the utility model includes multiple thermocouples, each thermocouple edge
Flue length direction be uniformly distributed and monitor respectively each section of flue of furnace temperature, control flue temperature changes between ± 1 DEG C, protects
Sintering temperature is demonstrate,proved to stablize.
3, the utility model is uniformly provided with heater in the closed side of flue, can be sintered and be provided more preferably for metal material
Hot-zone is further ensured that high uniform temperature.
4, the pumped vacuum systems of the utility model is the configuration of three-level vacuum pump, is realized by the PLC electric control system controls
Vacuum degree is adjustable, and vacuum trap is in addition equipped on the pipeline that diffusion pump is connect with furnace shell and is used for for some volatilizations greatly
Material sintering, substantially increases the scope of application of the utility model.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of one embodiment of the utility model,
Fig. 2 is the top view of embodiment in Fig. 1,
Fig. 3 is A-A view in Fig. 1,
Fig. 4 is B-B view in Fig. 1,
Fig. 5 is the schematic diagram of heating component in Fig. 1,
Fig. 6 is the working state schematic representation one of embodiment in Fig. 2,
Fig. 7 is the working state schematic representation two of embodiment in Fig. 2,
Fig. 8 is the schematic diagram of another embodiment of the utility model.
Wherein, 1 is furnace shell, and 2 be preceding heater, and 3 be thermocouple, and 4 be cooling nozzles, and 5 be cooling spray pipe, and 6 be flue,
601 be the second fixing piece, and 7 be shelf supporting leg, and 8 be heating component, and 801 be calandria, and 802 be electrode, and 803 be power supply, and 804 are
First fixing piece, 9 be back side panel, and 10 be rear heater, and 11 be water cooling heat exchanger, and 12 be centrifugal blower, and 13 be front side board, and 14 are
Shelf, 15 be power-supply system, and 16 be inflation system, and 17 be water-cooling system, and 18 be slide valve pump, and 19 be lobe pump, and 20 be diffusion pump,
21 be vacuum trap, and 22 be PLC electric-control system, and 23 be the first crosswind door, and 24 be crosswind door drive, and 25 be air-cooled comb
Plate, 26 be the first airflow-reversing door, 27 be the second airflow-reversing door, 28 be second side air door, 29 be reversing plate driving device, 30
It is front port for preceding air door, 31,32 be rear port, and 33 be rear air door, and 34 be rear door driving device, and 35 be preceding air door driving dress
It sets, 36 be air duct.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Fig. 1~8, the utility model includes furnace shell 1, flue 6, pumped vacuum systems, inflation system 16, blower heat exchange
System, PLC electric-control system 22 and power-supply system 15, wherein as shown in Figure 1, flue 6 is set in furnace shell 1, in the flue 6
Portion is equipped with heating component 8, and the flue 6 is non-close structure namely the flue 6 includes closed side and the non-envelope equipped with opening
Side is closed, as shown in figures 3 and 8, the opening in the non-close side of the flue 6 is equipped with openable air door, in the flue 6
Closed side inner wall be equipped with heater, insulating is equipped on 6 inner wall of flue, in addition in the flue 6
It is additionally provided with the temperature control device for detecting temperature in gallbladder, as shown in Fig. 2, being equipped with pumped vacuum systems, inflation outside the furnace shell 1
In addition system 16, PLC electric-control system 22 and power-supply system 15 are equipped with blower heat-exchange system on furnace shell 1, when equipment works, furnace
It is vacuumized in shell 1 by the pumped vacuum systems, and cooling gas is injected by the inflation system 16, and cooling gas passes through
The blower heat-exchange system drives fluid interchange, and each system and heating element are powered by the power-supply system 15, and are united
One is controlled by the PLC electric-control system 22.The power-supply system 15, PLC electric-control system 22, inflation system 16 are this field
Well-known technique.
As shown in Fig. 2, the pumped vacuum systems is set to 1 outside of furnace shell and pumping end passes through pipeline and 1 phase of furnace shell
Even, the pumped vacuum systems is the configuration of three-level vacuum pump, including sequentially connected slide valve pump 18 (or molecular pump), 19 and of lobe pump
The pumping end of diffusion pump 20, the diffusion pump 20 is connected by pipeline with the furnace shell 1, and the utility model passes through three-level vacuum pump
It configures and realizes that vacuum degree is adjustable by the PLC electric-control system 22, the pipeline in addition being connect in the diffusion pump 20 with furnace shell 1
It is equipped with vacuum trap 21, the vacuum trap 21 is sintered mainly for some great materials of volatilization and is arranged, improved
Equipment applicability.The vacuum trap 21 is techniques well known and is commercial products.
As shown in Figures 4 and 5, heating component 8 is equipped with inside the flue 6, the heating component 8 includes multiple evenly distributed
Calandria 801, wherein as shown in figure 4, the calandria 801 may be designed to according to 6 shape of flue it is rectangular box-like, if flue
6 are round or oval, then calandria 801 correspondingly may be designed to round or ellipse frame-shaped, and the 801 frame side of calandria can
For plate, rodlike or band-like, 801 material of calandria can be tungsten, molybdenum, graphite, and wherein graphite is mainly used for SmCo heating.Such as
Shown in Fig. 5, in the heating component 8, two calandrias 801 form one group of heat-generating units and are powered by an electrode 802
Fever, the electrode 802 is connected with the power supply 803 outside furnace shell 1, as shown in Fig. 2, each power supply 803 is all set in institute
It states in power-supply system 15.
As shown in figure 4,801 surrounding of calandria is connected by the first fixing piece 804 with 6 inner wall of flue, the flue 6
Two sides are connected by the second fixing piece 601 with 1 inner wall of furnace shell.
Be equipped with insulating on 6 inner wall of flue, the insulating be multilayered structure and from inside to outside according to
Secondary is heat reflection screen, thermal insulation material (graphite felt or cellucotton) and metal shell.The insulating is skill known in this field
Art.
As illustrated in figures 1 and 8, the temperature control device includes multiple thermocouples 3, and each thermocouple 3 is along 6 length side of flue
To the furnace temperature for being uniformly distributed and monitoring respectively 6 each sections of flue, the heating power that the thermocouple 3 controls each heating zone respectively is defeated
Out, while over temperature alarm signal is provided, can control 6 temperature of flue and changes between ± 1 DEG C, guarantee that sintering temperature is stablized.
As illustrated in figures 1 and 8, it is equipped with shelf 14 in the flue 6, shelf supporting leg 7 is equipped on the downside of the shelf 14, and
The shelf supporting leg 7 is fixed on 1 bottom surface of furnace shell after passing through 6 downside of flue, and metal to be sintered is placed on the shelf 14.
As shown in Figure 1, the blower heat-exchange system includes water cooling heat exchanger 11 and centrifugal blower 12, wherein water cooling heat exchanger
11 are set in furnace shell 1, and centrifugal blower 12 is set to outside furnace shell 1, and the rotation of 12 front end fan of centrifugal blower drives cooling gas
It flows through the water cooling heat exchanger 11 and realizes heat exchange, as shown in Fig. 2, being equipped with water-cooling system 17, the water cooling on the outside of the furnace shell 1
Heat exchanger 11 is connected by pipeline with the water-cooling system 17.
The utility model is also uniformly provided with fever on the closed side inner wall of the flue 6 in addition to the heating component 8
Body can be sintered for metal material and provide more preferably hot-zone, be further ensured that high uniform temperature.According to the different structure of flue 6, institute
It states air door and the fever body position is also different.
Embodiment 1
As shown in figures 1 and 3,6 rear and front end of flue in the present embodiment is closed end, is equipped with and opens at left and right sides of flue 6
Mouthful, and the opening inner side is equipped with air-cooled grate plate 25.Wherein as shown in Figure 1, being equipped with preceding heater 2 in 6 front end of flue,
6 rear end of flue is equipped with rear heater 10, and the preceding heater 2 is mounted on the front side board 13 of flue 6 by fixing piece, institute
It states rear heater 10 to be mounted on the back side panel 9 of flue 6 by fixing piece, and is all provided on the inside of the front side board 13 and back side panel 9
There is the insulating.The preceding heater 2 and rear heater 10 can be plate, rodlike or band-like and be evenly arranged in flue
On 6 front side board 13 and back side panel 9, material can be tungsten, molybdenum, graphite, and wherein graphite is mainly used for SmCo heating, generate heat before described
Body 2 and rear heater 10 are equipped with electrode, and the electrode is connected by route with the corresponding power in the power-supply system 15,
Realize that preceding heater 2 and rear heater 10 heat after energization.
As shown in figure 3, the 6 side opening of flue is equipped with the first crosswind door 23, other side opening is equipped with second
Crosswind door 28, and each crosswind is held hinged with the leading edge of corresponding opening in front of the door, is respectively equipped with a side in 6 two sides of flue
Door driving device 24, and each crosswind door drives Unscrew or closing by corresponding crosswind door drive 24, in addition
The first airflow-reversing door 26 is respectively equipped with close to blower heat-exchange system one end two sides in the furnace shell 1 and the second air-flow changes
To door 27, and each airflow-reversing is held hinged with the blower heat-exchange system behind the door, is respectively equipped with one in 1 two sides of furnace shell
Reversing plate driving device 29, and each airflow-reversing door drives Unscrew or pass by corresponding reversing plate driving device 29
It closes.In the present embodiment, the crosswind door drive 24 and reversing plate driving device 29 are cylinder.
As shown in Figure 1, the present embodiment is evenly distributed with multiple cooling nozzles 4 on the upside of the flue 6, in addition in the furnace
6 upper side external of gallbladder is equipped with cooling spray pipe 5, and the cooling spray pipe 5 is connected with the inflation system 16 in 1 outside of furnace shell, each cooling spray
Mouth 4 is communicated with the cooling spray pipe 5.After the completion of sintering, when product is cooling, inflation system 16 is sprayed by cooling nozzles 4 into furnace
Enter cooling gas (inert gas or nitrogen).
The working principle of the present embodiment are as follows:
As shown in Figure 1, the present embodiment is in addition to being equipped with the heating component 8 that uniformly arranges in flue 6, also in 6 front and back of flue
Closed end be respectively equipped with preceding heater 2 and rear heater 10, can be sintered for metal material and more preferably hot-zone is provided, guaranteed more
High uniform temperature.
When sintering starts, workpiece is placed on the shelf 14 in flue 6, is then vacuumized by pumped vacuum systems, is made furnace
Reach in gallbladder 6 and need vacuum degree, then the first crosswind door 23 and second side air door 28 are closed, heating component 8 and each heater
It is initially powered up heating, after the completion of heating, into cooling stage.
As shown in figs. 6-7, the first crosswind door 23 and second side air door 28 are first opened after heating, and are wanted according to technique
It asks when in-furnace temperature is cooled to set temperature, cooling gas, while as shown in fig. 6, the first air-flow is quickly poured into furnace shell 1
The door 26 that commutates is opened, and air duct 36 is blocked in the closing of the second airflow-reversing door 27, and blower heat-exchange system starts, at this time gas flowing through channel
It is as shown in Figure 6: work in 11-centrifugal blower of water cooling heat exchanger the 12-the first airflow-reversing door the 26-the first crosswind door, 23-flue 6
Part-28-water cooling heat exchanger of second side air door 11.After 30 seconds (the specific time can set according to actual needs), the first air-flow is changed
Air duct 36 is blocked to the closing of door 26, the second airflow-reversing door 27 is opened, and changes gas flow, at this time gas flowing through channel such as Fig. 7
It is shown: workpiece-in 11-centrifugal blower of water cooling heat exchanger the 12-the second airflow-reversing door 27-second side air door, 28-flue 6
First 23-water cooling heat exchanger of crosswind door 11 will pass through two airflow-reversing doors in this way and realize cooling gas commutation cycle, workpiece
Cooling more uniform and deformation is small, and cooling velocity is fast.
Embodiment 2
As shown in figure 8, the present embodiment the difference from embodiment 1 is that: 6 front and back end of flue be equipped with port, left and right two
Side seal closes, wherein being equipped with preceding air door 30 at the front port 31 of flue 6, and the preceding air door 30 is by being set to 1 front end of furnace shell
The driving movement of preceding door driving device 35 in outside opens or closes, and rear air door 33, and institute are equipped at the rear port 32 of flue 6
It states rear air door 33 and is opened or closed by being set to the driving of rear door driving device 34 of 1 side of furnace shell, the preceding air door driving
Device 35 and rear door driving device 34 are techniques well known, are equipped with heater, institute in 6 or so the closed side of flue
It states heating element structure and available material is same as Example 1.
The working principle of the present embodiment are as follows:
The present embodiment is also respectively equipped in 6 left and right sides of flue in addition to being equipped with the heating component 8 uniformly arranged in flue 6
Heater can be sintered for metal material and provide more preferably hot-zone, guarantee higher uniform temperature.
When sintering starts, workpiece is placed on the shelf 14 in flue 6, is then vacuumized by pumped vacuum systems, is made furnace
Reach in gallbladder 6 and need vacuum degree, then preceding air door 30 and rear air door 33 are closed, and heating component 8 and each heater are initially powered up
Heating, after the completion of heating, into cooling stage.The preceding air door 30 of flue 6 and rear air door 33 are opened when cooling, are filled in furnace shell 1
Cooling gas (inert gas or nitrogen), and start blower heat-exchange system, so that cooling gas is circulated cooling, reaches fast prompt drop
Warm purpose.
Claims (6)
1. a kind of high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace, including furnace shell, flue, pumped vacuum systems, inflation system,
Blower heat-exchange system, PLC electric-control system and power-supply system, it is characterised in that: flue (6) is set in furnace shell (1), the flue
(6) internal to be equipped with heating component (8), insulating is equipped on the flue (6) inner wall, the flue (6) is equipped with can
The air door of unlatching, and heater is installed in the inside sidewalls that the flue (6) is not provided with air door, in addition in the flue
(6) it is equipped with the temperature control device for detecting temperature in, is vacuumized in furnace shell (1) by the pumped vacuum systems, and by described
Inflation system (16) injects cooling gas, and blower heat-exchange system is set on furnace shell (1), and cooling gas is changed by the blower
Hot systems drive fluid interchange.
2. high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace according to claim 1, it is characterised in that: the heating
Component (8) includes multiple evenly distributed calandrias (801).
3. high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace according to claim 2, it is characterised in that: the heating
Body (801) is frame-shaped, and frame side shape is plate, rodlike or band-like.
4. high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace according to claim 1, it is characterised in that: the temperature control
Device includes multiple thermocouples (3), and each thermocouple (3) is uniformly distributed along flue (6) length direction.
5. high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace according to claim 1, it is characterised in that: the flue
(6) rear and front end is closed end, the left and right sides is equipped with opening, and is equipped with heater in the flue (6) front and rear end walls,
Openable air door is equipped in the flue (6) left and right sides opening.
6. high-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace according to claim 1, it is characterised in that: the flue
(6) front and back end is equipped with port, the left and right sides and closes, and openable air door is equipped at the flue (6) front and back end ports, in institute
It states and is equipped with heater on the inner wall of flue (6) left and right closed side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820628161.9U CN208178420U (en) | 2018-04-28 | 2018-04-28 | High-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820628161.9U CN208178420U (en) | 2018-04-28 | 2018-04-28 | High-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace |
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| Publication Number | Publication Date |
|---|---|
| CN208178420U true CN208178420U (en) | 2018-12-04 |
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ID=64431815
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820628161.9U Active CN208178420U (en) | 2018-04-28 | 2018-04-28 | High-efficiency and energy-saving type Rare Metals Materials vacuum sintering furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111225756A (en) * | 2019-12-10 | 2020-06-02 | 宁波恒普真空技术有限公司 | 3D prints sintering device |
-
2018
- 2018-04-28 CN CN201820628161.9U patent/CN208178420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111225756A (en) * | 2019-12-10 | 2020-06-02 | 宁波恒普真空技术有限公司 | 3D prints sintering device |
| WO2021114074A1 (en) * | 2019-12-10 | 2021-06-17 | 宁波恒普真空技术有限公司 | 3d printing sintering device |
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