CN206869125U - A kind of achievable quantity-produced vacuum sintering furnace - Google Patents
A kind of achievable quantity-produced vacuum sintering furnace Download PDFInfo
- Publication number
- CN206869125U CN206869125U CN201720671267.2U CN201720671267U CN206869125U CN 206869125 U CN206869125 U CN 206869125U CN 201720671267 U CN201720671267 U CN 201720671267U CN 206869125 U CN206869125 U CN 206869125U
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- Prior art keywords
- hatch door
- cabin
- heater
- return wire
- transfer device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Tunnel Furnaces (AREA)
Abstract
It the utility model is related to metal injection molded field, disclose a kind of achievable quantity-produced vacuum sintering furnace, including body of heater, feed replacement cabin and discharging displacement cabin, feed replacement cabin includes the first hatch door for leading to the external world and the second hatch door for leading to body of heater, discharging displacement cabin includes the 3rd hatch door for leading to the external world and the 4th hatch door for leading to body of heater, first hatch door, second hatch door, 3rd hatch door can be opened and closed independently with the 4th hatch door, wherein, first hatch door and/or the second hatch door are closed simultaneously with the 3rd hatch door and/or the 4th hatch door, to ensure that the inner space of body of heater maintains vacuum state in the course of the work.Body of heater of the present utility model can persistently maintain heating and vacuum state, the process that furnace interior is continually vacuumized, heated, being incubated, cooling be eliminated, so as to greatly improving production efficiency, more suitable for large-scale production.
Description
Technical field
Powder metallurgy and metal/non-metal Field of Heat-treatment are the utility model is related to, is used for metal more particularly, to one kind
Injection molding agglomerating plant, it is specifically related to a kind of sintering furnace.
Background technology
Metal injection molded (Metal Injection Molding, abbreviation MIM) is a kind of from injection-moulding plastic industry
In the novel powder metallurgy forming technique that extends out, basic process steps are：The metal dust for meeting MIM requirements is chosen first
And binding agent, powder and binding agent are then mixed into by uniform feeding using appropriate method at a certain temperature, through being granulated
Be expelled in mould and be molded by injection machine again afterwards, acquisition into parison after ungrease treatment again high temperature sintering densification turn into
Final finished.
MIM high-temperature sintering apparatus mainly include batch type sintering furnace at present, and batch type sintering furnace is with vacuum sintering furnace
It is the most universal.Vacuum sintering furnace each run need to be manually or in a manner of manipulator loading by workpiece to be sintered delivering to stove
In body, and blow-on is required for undergoing procedure below every time：Charging → closing fire door → vacuumizes → heat temperature raising → insulation → drop
Temperature → unlatching fire door → discharging, this causes the production capacity of existing vacuum sintering furnace relatively low, can not meet continuity, large-scale production
Demand.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of achievable quantity-produced vacuum sintering furnace,
It is relatively low to solve the production capacity of existing vacuum sintering furnace, continuity can not be met, mass produce the problem of demand.
Technical scheme is used by the utility model solves its technical problem：
A kind of achievable quantity-produced vacuum sintering furnace, including body of heater, feed replacement cabin are put with discharging displacement cabin, charging
Changing cabin includes the first hatch door for leading to the external world and the second hatch door for leading to body of heater, and discharging displacement cabin includes the 3rd cabin for leading to the external world
Door and the 4th hatch door for leading to body of heater, the first hatch door, the second hatch door, the 3rd hatch door can be opened and closed independently with the 4th hatch door, wherein, the
One hatch door and/or the second hatch door are closed simultaneously with the 3rd hatch door and/or the 4th hatch door, to ensure the inside of body of heater sky
Between maintain vacuum state in the course of the work.
As the further improved procedure of such scheme, in addition to the first thing by material by feed replacement cabin feeding body of heater
Expect transfer device.
As the further improved procedure of such scheme, in addition to the second material transfer for promoting material to be moved in body of heater
Device.
As the further improved procedure of such scheme, in addition to material is sent into discharge by body of heater and replaces the 3rd thing in cabin
Expect transfer device.
As the further improved procedure of such scheme, in addition to the 4 materials that material is sent out out of discharging displacement cabin
Transfer device.
As the further improved procedure of such scheme, include the backflow in connection feed replacement cabin and discharging displacement cabin
Line.
As the further improved procedure of such scheme, return wire includes first return wire in connection feed replacement cabin, even
Pick out second return wire in material displacement cabin, and the first return wire of connection, the 3rd return wire of the second return wire.
The first return wire is transported to by the 3rd return wire as the further improved procedure of such scheme, in addition to by material
The 5th material transfer device, material is transported to the 6th material transfer device in feed replacement cabin by the first return wire, by thing
Material is transported to the 7th material transfer device of the 3rd return wire by the second return wire, and promotes material to be moved up in the 3rd return wire
The 8th dynamic material transfer device.
As the further improved procedure of such scheme, in addition to it is sequentially arranged on return wire and can be transported with respect to return wire
Dynamic some carriers.
As the further improved procedure of such scheme, direction of the body of heater along feed replacement cabin to the displacement cabin that discharges is set successively
There are heating zone and cooling zone.
The beneficial effects of the utility model are：
Body of heater can persistently maintain heating and vacuum state, eliminate furnace interior and continually vacuumize, heat, protect
Temperature, the process of cooling, so as to greatly improve production efficiency, more suitable for large-scale production.
In preferred embodiment of the present utility model, some material transfer devices are additionally provided with to realize the automatic of material
Change supply.
In preferred embodiment of the present utility model, return wire is additionally provided with to realize the backflow of carrier, further lifting
Production efficiency.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the front view of the utility model one embodiment；
Fig. 2 is the schematic perspective view on the direction of one, the utility model feed replacement cabin；
Fig. 3 is the schematic perspective view on another direction of the utility model feed replacement cabin；
Fig. 4 is the front view of second embodiment of the utility model.
Embodiment
Design, concrete structure and caused technique effect of the present utility model are carried out below with reference to embodiment and accompanying drawing
Clear, complete description, to be completely understood by the purpose of this utility model, scheme and effect.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that unless otherwise specified, when a certain feature is referred to as " fixing ", " connection " in another feature,
It can directly fix, be connected in another feature, can also indirectly fix, be connected in another feature.In addition, this
The descriptions such as the up, down, left, right, before and after used in utility model are only relative to each composition portion of the utility model in accompanying drawing
For the mutual alignment relation divided.
In addition, unless otherwise defined, the technology of all of technologies and scientific terms used here by the article and the art
The implication that personnel are generally understood that is identical.Term used in the description is intended merely to describe specific embodiment herein, without
It is to limit the present invention.Term as used herein " and/or " include the arbitrary of one or more related Listed Items
Combination.
Reference picture 1, show the front view of the utility model one embodiment.As illustrated, vacuum sintering furnace includes
With discharging displacement cabin 300, the main place that wherein body of heater 100 sinters as material, charging is put for body of heater 100, feed replacement cabin 200
Change cabin 200 with discharging displacement cabin 300 be respectively used to material charging before with the caching before discharging, the two coordinate body of heater 100 can
To realize the continuous production of vacuum sintering furnace.
Body of heater 100 can use known vacuum sintering furnace furnace binding, and the utility model is not limited this.It is preferred that
, the direction that body of heater 100 replaces cabin 300 along feed replacement cabin 200 to discharging is provided with heating zone and cooling zone, so as to realize
Material first heats the operation cooled down afterwards.Further, heating zone preferably has the section of several different temperatures, the stove of cooling zone
Body is preferably provided with water-cooling sandwich, and quick heat radiating is realized by water-cooling sandwich.
Specifically, reference picture 2, Fig. 3, respectively illustrate the three-dimensional signal on the different directions of the utility model feed replacement cabin
Figure, wherein the first hatch door is closed, the second hatch door is in opening.As illustrated, feed replacement cabin includes nacelle
210, nacelle 210 is provided with second hatch door 230 of the first hatch door 220 for leading to the external world with leading to body of heater 100, the first hatch door 220
Can independently it be opened and closed with the second hatch door 230, and after the first hatch door 220 and the second hatch door 230 are completely enclosed, will in nacelle 210
A sealing space is formed, coordinates vacuum extractor can be with the formation vacuum environment in nacelle 210.
Preferably, it is additionally provided with intake valve in nacelle 210.
Hatch door can use known any cabin door structure, overhang-door structure preferably be used in the present embodiment, with the second hatch door
Exemplified by 230, it includes the support 231 being fixed in nacelle 210, and the both sides of support 231 are provided with vertical guide rail 232, guide rail 232
On slidably connect door leaf 233, the top of door leaf 233 and the drive shaft of cylinder 234 are affixed, when door leaf 233 moves to support 231
Lower end when, the opening in nacelle 210 is blocked；When door leaf 233 moves to the upper end of support 231 as shown in FIG., opening
Open, the inner space of nacelle 210 connects with the inner space of body of heater 100.
The first material that the utility model preferably also includes material being sent into body of heater 100 by feed replacement cabin 200 transfers dress
Put 410.First material transfer device 410 in the present embodiment preferably uses transfer bar mechanism, specific as shown in figure 3, including fixing
The power set 411 such as cylinder, motor being connected in nacelle 210, and the push rod 412 of the second hatch door of face 230, push rod
412 can move under the driving of power set 411 towards the second hatch door 230, and can be resetted under the driving of spring 413.
Corresponding above-mentioned transfer bar mechanism, reference picture 2, the inside of nacelle 210 are additionally provided with slide rail, and slide rail includes the hatch door of face second
230 slide rail 211, and the slide rail (not shown) of the first hatch door of face 220.Material is preferably positioned on carrier 700, and carrier can
To be moved relative to slide rail, the stroke of push rod 412 should be more than the length of nacelle 210.
Reference picture 1, the structure in discharging displacement cabin 300 is similar with the agent structure in feed replacement cabin 200, i.e., including nacelle
310, nacelle 310 is provided with fourth hatch door 330 of the 3rd hatch door 320 for leading to the external world with leading to body of heater 100.Discharging displacement cabin
Material transfer device, i.e. 4 materials transfer device 440 are again provided with 300, difference is that 4 materials transfer device 440 is used
Sent out in by material out of discharging displacement cabin 300.
In order to realize movement of the material in body of heater 100, body of heater 100, which is provided with to be additionally provided with, promotes material in body of heater 100
Mobile second material transfer device 420, and material is sent into discharge by body of heater 100 and replaces the 3 material transfer in cabin 300
Device 430, second material transfer device 420, the structure of 3 material transfer device 430 and the class of first material transfer device 410
Seemingly, tired state is not done herein.
First hatch door 220 and/or the second hatch door 230 should be in simultaneously with the 3rd hatch door 320 and/or the 4th hatch door 330
It is at least one in closed mode, i.e. the first hatch door 220, the second hatch door 230, and in the 3rd hatch door 320, the 4th hatch door 330
It is at least one to be closed simultaneously, to ensure that body of heater 100 is maintained at vacuum state in the course of the work.It is specific to combine
Fig. 1, Fig. 2 and Fig. 3, application method of the present utility model are：
1st, starting device, each hatch door are closed first, are opened body of heater vavuum pump 510 and are evacuated to setting numerical value (body of heater vacuum
Pump always on vacuum with maintenance setting in equipment operation), stove inner heating device is opened to the temperature set.
2nd, first hatch door 220 in feed replacement cabin 200, the second hatch door 230 are now in closed mode, check nacelle 210
Whether interior atmospheric pressure value is consistent with ambient pressure, and as inconsistent, it is consistent that the intake valve in unlatching nacelle 210 is allowed to air pressure.
3rd, after the air pressure in nacelle 210 is consistent with ambient pressure, opening the first hatch door 220, (now the second hatch door 230 is protected
Hold closing), the carrier for being placed with material is sent into nacelle 210.
4th, after material is sent into nacelle 210, the first hatch door 220 is closed, and is started inlet vacuum pump 520 and is taken out nacelle 210 very
It is empty to setting value.
5th, after the vacuum in nacelle 210 has reached setting value, check second material transfer device 420 whether initial
Position, wait second material transfer device 420 to complete push action if second material transfer device 420 is not in initial bit and return to just
Beginning position.
6th, after the vacuum in nacelle 210 has reached setting value and second material transfer device 420 is located at initial bit, open
The second hatch door 230 (now the first hatch door 220 remains turned-off) is opened, starts first material transfer device 410 by the load in nacelle 210
Tool is pushed to the upper discharge position in body of heater 100.
7th, after carrier reaches nacelle 210, first material transfer device 410, which retreats, to be resetted, and the second hatch door 230 is closed, to cabin
Nitrogen is passed through in body 210 or opens intake valve, makes the air pressure in nacelle 210 consistent with external environment condition.
8th, whether 3 material transfer device 430 is checked initial bit (spacing afterwards), if not, waiting 3 material transfer
Device 430 returns to initial bit after the completion of acting；In this way, then the carrier that second material transfer device 420 promotes upper discharge position is started,
The push stroke of second material transfer device 420 is slightly larger than the length of single carrier, so as to so as to be arranged in order in body of heater
The direction that carrier replaces cabin 300 to discharging moves integrally.
9th, when the carrier positioned at the tail end of body of heater 100 aligns 3 material transfer device 430, second material transfer device
420 reset；Whether now inspection discharging displacement cabin 300 is empty, waits discharging displacement cabin 300 to empty if not for sky, such as discharging
Displacement cabin 300 then checks whether vacuum reaches setting value to be empty, is taken out very as do not started outlet vavuum pump 530 if up to setting value
Empty such as discharging displacement cabin 300 is empty and up to the vacuum of setting to setting value, then closes outlet vavuum pump 530 and open the
Four hatch doors 330 (now the 3rd hatch door 320 remains turned-off).
10th, after the 4th hatch door 330 is opened, 3 material transfer device 430 starts positioned at the carrier of the tail end of body of heater 100
Push to discharging displacement cabin 300.
11st, after carrier reaches discharging displacement cabin 300,3 material transfer device 430 is resetted, and the 4th hatch door 330 is closed.
12nd, after the 4th hatch door 330 is closed, opening the intake valve in discharging displacement cabin 300 makes discharging replace the gas in cabin 300
Pressure is consistent with ambient pressure.
13rd, after the air pressure in discharging displacement cabin 300 is consistent with ambient pressure, (the 4th hatch door of the 3rd hatch door 320 is opened
330 remain turned-off), and start 4 materials transfer device 440 after the completion of the unlatching of the 3rd hatch door 320, carrier is put from discharging
Cabin 300 is changed to send out.
14th, after carrier is sent out, the 3rd hatch door 320 is closed.
2 to 14 can be to realize the continuous sintering of material, because body of heater can be continuously maintained in this way, repeating the above steps
Heating and vacuum state, eliminate the process that furnace interior is continually vacuumized, heated, being incubated, cooling, so as to greatly
Improving production efficiency, more suitable for large-scale production；Meanwhile vacuum sintering furnace is without continually heating and cooling, so as to save
Electric energy, extend the service life of vacuum drying oven；In addition, can only be by radiation and heat transfer by heat conduction, furnace interior heating during vacuum-sintering
Speed is slower, and existing vacuum sintering furnace is beyond the control of not lift combustion space to pursue bigger production capacity, therefore adds in furnace chamber
The uniform temperature of hot warm area is poor (the usual temperature difference is at ± 10 DEG C or so), so as to influence the sintering of material.
Reference picture 4, show the front view of second embodiment of the utility model.As illustrated, the present embodiment is i.e. the
Increase return wire, return wire connection feed replacement cabin 200 and discharging displacement cabin 300 on the basis of one embodiment, it is possible to achieve carry
The backflow of tool, so as to further improving production efficiency.Preferably, return wire includes first backflow in connection feed replacement cabin 200
Line 610, second return wire 620 in connection discharging displacement cabin 300, and the first return wire 610 of connection, the second return wire 620
3rd return wire 630.
In order to realize movement of the carrier on each return wire, the present embodiment is additionally provided with material by the 3rd return wire 630
The 5th material transfer device 450 of the first return wire 610 is transported to, material is transported to feed replacement by the first return wire 610
The 6th material transfer device 460 in cabin 200, material is transported to the 7th material of the 3rd return wire 630 by the second return wire 620
Transfer device 470, and the 8th material transfer device 480 for promoting material to be moved on the 3rd return wire 630, the 5th material move
Send the structure of device 450, the 6th material transfer device 460, the 7th material transfer device 470 and the 8th material transfer device 480
It is similar with first material transfer device 410, tired state is not done herein.
Also increase has reflow step to the present embodiment on the step of first embodiment, including：
1st, carrier is transported to the second return wire 620 by 4 materials transfer device 440 by discharging displacement cabin 300.
2nd, the 7th material transfer device 470 resets after carrier is transported into the 3rd return wire 630 by the second return wire 620.
3rd, the 8th material transfer device 480 promotes carrier to be moved on the 3rd return wire 630, is moved to behind setting position again
Position.
4th, the 5th material transfer device 450 resets after carrier is transported into the first return wire 610 by the 3rd return wire 630.
5th, the 6th material transfer device 460 resets after carrier is transported into feed replacement cabin 200 by the first return wire 610.
Above is preferably implement to be illustrated to of the present utility model, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to the utility model spirit
Or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of achievable quantity-produced vacuum sintering furnace, it is characterised in that replaced including body of heater, feed replacement cabin and discharging
Cabin, the feed replacement cabin include the first hatch door for leading to the external world and the second hatch door for leading to the body of heater, the discharging displacement
Cabin includes the 3rd hatch door for leading to the external world and the 4th hatch door for leading to the body of heater, first hatch door, the second hatch door, the 3rd cabin
The hatch doors of Men Yu tetra- can be opened and closed independently, wherein, first hatch door and/or the second hatch door, with the 3rd hatch door and/or the 4th
Hatch door is closed simultaneously, to ensure that the inner space of the body of heater maintains vacuum state in the course of the work.
2. achievable quantity-produced vacuum sintering furnace according to claim 1, it is characterised in that also include by material by
The first material transfer device of the body of heater is sent into the feed replacement cabin.
3. achievable quantity-produced vacuum sintering furnace according to claim 1, it is characterised in that also include promoting material
The second material transfer device moved in the body of heater.
4. achievable quantity-produced vacuum sintering furnace according to claim 1, it is characterised in that also include by material by
The body of heater is sent into the 3 material transfer device in the discharging displacement cabin.
5. achievable quantity-produced vacuum sintering furnace according to claim 1, it is characterised in that also include by material from
The 4 materials transfer device sent out in the discharging displacement cabin.
6. achievable quantity-produced vacuum sintering furnace according to any one of claim 1 to 5, it is characterised in that also
Return wire including connecting the feed replacement cabin and discharging displacement cabin.
7. achievable quantity-produced vacuum sintering furnace according to claim 6, it is characterised in that the return wire includes
Connect first return wire in the feed replacement cabin, connect second return wire in the discharging displacement cabin, and connection described the
3rd return wire of one return wire, the second return wire.
8. achievable quantity-produced vacuum sintering furnace according to claim 7, it is characterised in that also include by material by
3rd return wire is transported to the 5th material transfer device of first return wire, and material is transported by first return wire
The 6th material transfer device in the feed replacement cabin is delivered to, material is transported to the 3rd backflow by second return wire
7th material transfer device of line, and the 8th material transfer device for promoting material to be moved on the 3rd return wire.
9. achievable quantity-produced vacuum sintering furnace according to claim 6, it is characterised in that also include being arranged in order
On the return wire and can return wire motion relatively some carriers.
10. achievable quantity-produced vacuum sintering furnace according to any one of claim 1 to 5, it is characterised in that institute
State body of heater and be sequentially provided with heating zone and cooling zone along the feed replacement cabin to the direction that cabin is replaced in the discharging.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671267.2U CN206869125U (en) | 2017-06-09 | 2017-06-09 | A kind of achievable quantity-produced vacuum sintering furnace |
| PCT/CN2017/090430 WO2018223439A1 (en) | 2017-06-09 | 2017-06-28 | Vacuum sintering furnace enabling continuous production |
| TW106216043U TWM556837U (en) | 2017-06-09 | 2017-10-30 | Vacuum sintering furnace capable of continuous production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671267.2U CN206869125U (en) | 2017-06-09 | 2017-06-09 | A kind of achievable quantity-produced vacuum sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206869125U true CN206869125U (en) | 2018-01-12 |
Family
ID=61332903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720671267.2U Active CN206869125U (en) | 2017-06-09 | 2017-06-09 | A kind of achievable quantity-produced vacuum sintering furnace |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN206869125U (en) |
| TW (1) | TWM556837U (en) |
| WO (1) | WO2018223439A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108409A1 (en) * | 2018-11-26 | 2020-06-04 | 太原开元智能装备有限公司 | Externally heated vacuum continuous sintering furnace |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117553574B (en) * | 2024-01-11 | 2024-03-26 | 淄博澳丰电子有限公司 | Firing furnace for chip tube seat |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044710U (en) * | 1989-03-06 | 1989-09-20 | 吴胜久 | Automatic and continuous vacuum sintering furnace |
| US5224857A (en) * | 1991-08-01 | 1993-07-06 | Gas Research Institute | Radiant tube arrangement for high temperature, industrial heat treat furnace |
| JPH09111309A (en) * | 1995-10-20 | 1997-04-28 | Hitachi Metals Ltd | Continuous sintering furnace |
| CN102445072A (en) * | 2010-10-05 | 2012-05-09 | 喻睿 | Continuous dynamic sintering kiln |
| CN103196292B (en) * | 2013-04-08 | 2015-09-09 | 彭达岩 | High-temperature vacuum atmosphere of working continuously firing furnace |
| CN103996520B (en) * | 2014-05-11 | 2016-10-05 | 沈阳中北通磁科技股份有限公司 | The sintering method of a kind of Fe-B rare-earth permanent magnet and equipment |
| CN106670468B (en) * | 2017-02-23 | 2019-07-09 | 深圳市星特烁科技有限公司 | A kind of continuous dumping sintering furnace of novel protected atmosphere |
-
2017
- 2017-06-09 CN CN201720671267.2U patent/CN206869125U/en active Active
- 2017-06-28 WO PCT/CN2017/090430 patent/WO2018223439A1/en active Application Filing
- 2017-10-30 TW TW106216043U patent/TWM556837U/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108409A1 (en) * | 2018-11-26 | 2020-06-04 | 太原开元智能装备有限公司 | Externally heated vacuum continuous sintering furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018223439A1 (en) | 2018-12-13 |
| TWM556837U (en) | 2018-03-11 |
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