CN108489261B - Internal rotation type vacuumizing sealing assembly for high-temperature vacuum sintering furnace and vacuumizing charging bucket - Google Patents
Internal rotation type vacuumizing sealing assembly for high-temperature vacuum sintering furnace and vacuumizing charging bucket Download PDFInfo
- Publication number
- CN108489261B CN108489261B CN201810695186.5A CN201810695186A CN108489261B CN 108489261 B CN108489261 B CN 108489261B CN 201810695186 A CN201810695186 A CN 201810695186A CN 108489261 B CN108489261 B CN 108489261B
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- cavity
- mounting
- internal rotation
- sealing assembly
- rotation type
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- 238000005245 sintering Methods 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims description 22
- 238000005086 pumping Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 239000007770 graphite material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/066—Vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses an internal rotation type vacuumizing sealing assembly for a high-temperature vacuum sintering furnace, which comprises a fixed part and a movable part, wherein the bottom of the fixed part is used for being connected with a charging bucket, the top of the fixed part is used for being connected with the movable part, a cavity for accommodating the movable part is arranged in the fixed part, an air inlet channel communicated with the outside is arranged at the bottom of the cavity and communicated with the inside of the charging bucket, a vacuumizing interface is arranged on the side wall of the fixed part and communicated with the cavity, the lower part of the movable part is arranged in the cavity, the upper part of the movable part penetrates out from the top of the fixed part, and the upper part of the movable part is movably connected with the top of the fixed part so as to enable the movable part to move up and down relative to the fixed part.
Description
Technical Field
The invention relates to the technical field of heating equipment in a high-temperature vacuum sintering furnace, in particular to an internal rotation type vacuumizing sealing assembly and a vacuumizing charging bucket for the high-temperature vacuum sintering furnace.
Background
When the high-temperature vacuum sintering furnace is used for sintering materials, a material containing tray or a material containing tank is required to be used as a material containing container, then the material containing tray or the material containing tank is placed into the sintering furnace together for sintering, the temperature in the sintering furnace reaches 1000-1800 ℃, in the high-temperature atmosphere, the material tank is required to ensure the tightness of the material tank, the vacuum degree in the material tank is required to meet the process requirement, the material tank is required to be vacuumized, and a vacuumizing tube communicated with the material tank is arranged on the upper cover of the material tank generally, and the vacuumizing tube is used for vacuumizing.
However, in this structure, there is a problem of pressure relief and air leakage, so that the vacuum degree cannot continuously and stably reach the process requirement.
Disclosure of Invention
It is necessary to provide an internal rotation type vacuumizing sealing assembly for a high-temperature vacuum sintering furnace.
It is also necessary to provide a vacuum tank.
The utility model provides a high temperature vacuum sintering is internal rotation formula evacuation seal assembly for stove, including mounting, moving part, the bottom of mounting is used for being connected with the material jar, the top of mounting is used for being connected with the moving part, set up the cavity that holds the moving part in the inside of mounting, set up the air inlet channel with outside intercommunication in the bottom of cavity, with the inside intercommunication of material jar, set up the evacuation interface on the lateral wall of mounting, with the cavity intercommunication, the lower part setting of moving part is inside the cavity, upper portion wears out from the top of mounting, and swing joint between the upper portion of moving part and the top of mounting, in order to make the moving part reciprocate for the mounting.
Preferably, the cavity of mounting includes equal diameter's cylindrical cavity and toper cavity, and the toper cavity is located the bottom of cavity, and cylindrical cavity is located the top of toper cavity, the moving part includes equal diameter's cylinder and conical, and the external diameter of moving part's cylinder is less than the internal diameter of the cylindrical cavity of mounting to make the two contactless, the conical of moving part matches with the toper cavity shape of mounting, so that the two forms the laminating, and the evacuation interface sets up the top in the toper cavity of mounting.
Preferably, the upper part of the movable piece is in threaded connection with the top of the fixed piece, so that the movable piece can realize up-and-down micro-displacement relative to the fixed piece by screwing the movable piece.
Preferably, the fixing piece comprises a base and a connecting seat, wherein the bottom of the base is used for being connected with the charging bucket, the top of the base is movably connected with the bottom of the connecting seat, a hole for threaded assembly with the movable piece is formed in the top of the connecting seat, and the connecting seat is in threaded connection with the base.
Preferably, a cavity is arranged between the connecting seat and the top of the base, an annular flange is further arranged on the side wall of the movable piece above the top of the base, the outer diameter of the annular flange is larger than the inner diameter of the cavity of the base, and the annular flange is provided with an inclined surface which is obliquely arranged downwards.
Preferably, the fixing piece is made of stainless steel material, and the movable piece is made of graphite material.
The utility model provides a jar of evacuation material jar includes jar body, upper cover and sets up internal rotation formula evacuation seal assembly for high temperature vacuum sintering stove on the upper cover, and jar body is sealed jar body, opens and shuts the charging hole at the top of jar body, sets up the flange around the charging hole, and the upper cover lid closes on the charging hole to swing joint between with the flange, with the jar body sealed, set up the mounting hole that is used for installing internal rotation formula evacuation seal assembly for high temperature vacuum sintering stove on the upper cover, and the mounting hole communicates with jar internal portion and the air inlet channel of internal rotation formula evacuation seal assembly for high temperature vacuum sintering stove, internal rotation formula evacuation seal assembly for high temperature vacuum sintering stove is foretell.
The invention realizes the closing and the conduction of the vacuumizing channel through the combination and the separation between the movable piece and the fixed piece, adopts the surface-to-surface contact to seal the vacuumizing channel, has the advantages of sensitive and convenient operation, good sealing effect and no air leakage, and is more suitable for repeated operation.
Drawings
FIG. 1 is a schematic structural view of an internal rotation type vacuum-pumping seal assembly for a high temperature vacuum sintering furnace.
Fig. 2 is a cross-sectional view of an internal rotary evacuated sealing assembly for a high temperature vacuum sintering furnace.
Fig. 3 is a schematic structural view of the bucket.
Fig. 4 is a cross-sectional view of the bucket.
Fig. 5 is an enlarged view of an installation schematic of the vacuum seal assembly and the bucket.
In the figure: the internal rotation type vacuumizing sealing assembly 10 for the high-temperature vacuum sintering furnace, a fixed part 11, a base 111, a connecting seat 112, an air inlet channel 113, a vacuumizing interface 114, a movable part 12, an annular flange 121, a charging bucket 20, a tank body 21 and an upper cover 22.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 1 and 2, an embodiment of the invention provides an internal rotation type vacuumizing sealing assembly 10 for a high temperature vacuum sintering furnace, which comprises a fixed member 11 and a movable member 12, wherein the bottom of the fixed member 11 is used for being connected with a charging bucket 20, the top of the fixed member 11 is used for being connected with the movable member 12, a cavity for accommodating the movable member 12 is arranged in the fixed member 11, an air inlet channel 113 communicated with the outside is arranged at the bottom of the cavity so as to be communicated with the inside of the charging bucket 20, a vacuumizing interface 114 is arranged on the side wall of the fixed member 11 so as to be communicated with the cavity, the lower part of the movable member 12 is arranged in the cavity, the upper part of the movable member 12 penetrates out from the top of the fixed member 11, and the upper part of the movable member 12 is movably connected with the top of the fixed member 11 so as to enable the movable member 12 to move up and down relative to the fixed member 11. By screwing the movable piece 12, the movable piece 12 moves upwards or downwards slightly, so that the degree of adhesion between the movable lower part and the bottom of the cavity of the fixed piece 11 is adjusted, and the connection and disconnection between the air inlet channel 113 and the vacuumizing interface 114 are controlled, so that the inside of the charging bucket 20 is vacuumized and the charging bucket 20 is sealed.
Further, the cavity of the fixed member 11 includes a cylindrical cavity and a conical cavity with equal diameters, the conical cavity is located at the bottom of the cavity, the cylindrical cavity is located above the conical cavity, the movable member 12 includes a cylindrical body and a conical body with equal diameters, the outer diameter of the cylindrical body of the movable member 12 is smaller than the inner diameter of the cylindrical cavity of the fixed member 11, so that the cylindrical body and the conical cavity of the movable member 12 are not contacted, the conical body of the movable member 12 is matched with the conical cavity of the fixed member 11 in shape, so that the conical body and the conical cavity form fit, and the vacuumizing interface 114 is arranged above the conical cavity of the fixed member 11.
The non-contact constant-diameter cavity and the cylinder do not form an abutting surface, namely the communication between the vacuumizing interface 114 and the constant-diameter cavity is always kept, and the control surface used for communicating and cutting off the vacuumizing interface 114 and the air inlet channel 113 is the conical body of the movable part 12 and the conical body of the fixed part 11.
The conical shapes matched with each other not only can ensure that the contact surface is small after the two are attached, the on-off control is convenient and sensitive, the speed is high, but also the conical inclined surface forms a allowance space for the movable piece 12 to extend into the fixed piece 11, and when the movable piece 12 moves downwards, the two are attached seamlessly.
The constant-diameter cavity and the cylinder which are not in contact do not form an attaching surface, so that contact abrasion of the fixed part and the movable part can be reduced, a control surface is not formed, the contact area of the control surface is reduced, the screwing resistance of the movable part 12 is reduced, more importantly, the attaching and bonding probability of the surface between the fixed part 11 and the movable part 12 is smaller in a long-time high-temperature vacuum environment because the control surface area is smaller, and the design defect that the movable part 12 cannot be screwed due to bonding of the fixed part and the movable part is avoided.
Further, the upper part of the movable member 12 is screwed with the top of the fixed member 11, so that the movable member 12 can slightly move up and down relative to the fixed member 11 by screwing the movable member 12.
Further, the fixing member 11 includes a base 111 and a connecting seat 112, the bottom of the base 111 is used for being connected with the charging bucket 20, the top of the base 111 is movably connected with the bottom of the connecting seat 112, a hole assembled with the movable member 12 by threads is formed in the top of the connecting seat 112, and the connecting seat 112 is in threaded connection with the base 111.
The base 111 and the connecting seat 112 which are movably connected are convenient to detach and replace, so that the cost of single parts is reduced, and compared with the product in the prior whole process, the replacement cost is lower.
Further, a cavity is formed between the connecting seat 112 and the top of the base 111, an annular flange 121 is further provided on the side wall of the movable member 12 above the top of the base 111, the outer diameter of the annular flange 121 is larger than the inner diameter of the cavity of the base 111, and the annular flange 121 has a slope inclined downward.
When the movable member 12 is in threaded connection with the connecting seat 112, the movable member 12 is repeatedly screwed for many times, the crest position of the thread of the movable member 12 or the connecting seat 112 is the most fragile part, and mechanical damage is caused by many times of operation, so that the crest of the thread is worn or broken, and therefore, fallen fragments or scraps fall downwards along the outer wall of the movable member 12, enter the cavity along the equal-diameter outer wall of the movable member 12, enter the air inlet channel 113, even enter the inside of the charging bucket 20, and cause pollution to sintered materials in the charging bucket 20.
Therefore, according to the scheme, the annular flange 121 is seamlessly connected with the outer wall of the movable piece 12, the annular flange 121 is blocked between the cavity and the threads, and even if the falling of the scraps is unavoidable, the falling scraps are received by the inclined surface of the annular flange 121, further slide down along the inclined surface and are in the connecting seat 112 to be collected, so that the pollution of the materials entering the charging bucket 20 is avoided.
Further, the fixing member 11 is made of stainless steel, and the movable member 12 is made of graphite.
When the high-temperature vacuum sintering furnace is used, the temperature in the furnace reaches 1000 ℃ or even higher, when the materials in the charging bucket 20 are sintered, frequent vacuumizing operation is needed to be carried out on the interior of the charging bucket 20, and the vacuumizing interface 114 is needed to be opened and closed for a plurality of times, but in a high-temperature environment, as the thickness of the thread tip part is smaller when the movable part 12 and the fixed part 11 are in threaded connection, the high-temperature bearing capability is weakest, and the thread tip part is easily melted at high temperature or becomes low in strength, so that the phenomenon that the thread tip part between the movable part 12 and the fixed part 11 is adhered and melted into a whole is caused, thus, when the movable part 12 is screwed strongly, the thread tip part or the thread bottom part is damaged, the thread structure is damaged, and the movable part 12 cannot rotate relative to the fixed part 11, so that the vacuumizing interface 114 cannot be opened.
Therefore, the movable part 12 is replaced by graphite material in the scheme, the high temperature resistance is fully improved, the high temperature resistance reaches more than 2500 ℃, the melting of the thread tooth tip part of the movable part 12 caused by high temperature is avoided, and even if the thread tooth tip of the fixed part 11 is melted at high temperature, the problem of fusion bonding of the movable part and the graphite is solved due to poor combination of the movable part and the graphite.
Referring to fig. 3-5, the invention further provides a vacuum-pumping bucket 20, which comprises a bucket body 21, an upper cover 22 and an internal rotation type vacuum-pumping sealing assembly 10 for the high-temperature vacuum sintering furnace, wherein the internal rotation type vacuum-pumping sealing assembly 10 is arranged on the upper cover 22, the bucket body 21 is a sealed bucket body 21, a charging hole is opened and closed at the top of the bucket body 21, a flange is arranged around the charging hole, the upper cover 22 covers the charging hole and is movably connected with the flange so as to seal the bucket body 21, a mounting hole for mounting the internal rotation type vacuum-pumping sealing assembly 10 for the high-temperature vacuum sintering furnace is formed in the upper cover 22, and the mounting hole is communicated with the inside of the bucket body 21 and an air inlet channel 113 of the internal rotation type vacuum-pumping sealing assembly 10 for the high-temperature vacuum sintering furnace, and the internal rotation type vacuum-pumping sealing assembly 10 for the high-temperature vacuum sintering furnace is.
The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.
The foregoing disclosure is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the invention, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the invention as defined by the appended claims.
Claims (7)
1. An internal rotation type vacuumizing sealing assembly for a high-temperature vacuum sintering furnace is characterized in that: including mounting, moving part, the bottom of mounting is used for being connected with the material jar, and the top of mounting is used for being connected with the moving part, sets up the cavity that holds the moving part in the inside of mounting, sets up the air inlet channel with outside intercommunication in the bottom of cavity to with the inside intercommunication of material jar, offer the evacuation interface on the lateral wall of mounting, with the cavity intercommunication, the lower part setting of moving part is inside the cavity, and the upper portion wears out from the top of mounting, and swing joint between the upper portion of moving part and the top of mounting, in order to make the moving part reciprocate for the mounting.
2. The internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace as set forth in claim 1, wherein: the cavity of mounting includes equal diameter's cylindrical cavity and toper cavity, and the toper cavity is located the bottom of cavity, and cylindrical cavity is located the top of toper cavity, the moving part includes equal diameter's cylinder and conical body, and the external diameter of moving part's cylinder is less than the internal diameter of the cylindrical cavity of mounting to make the two contactless, the conical body of moving part matches with the toper cavity shape of mounting, so that the two forms the laminating, and the evacuation interface sets up the top in the toper cavity of mounting.
3. The internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace as set forth in claim 1, wherein: the upper part of the movable piece is connected with the top of the fixed piece through threads, so that the movable piece can realize up-and-down micro-displacement relative to the fixed piece in a screwing mode.
4. The internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace as claimed in claim 2, wherein: the fixing piece comprises a base and a connecting seat, wherein the bottom of the base is used for being connected with the charging bucket, the top of the base is movably connected with the bottom of the connecting seat, a hole which is assembled with the movable piece through threads is formed in the top of the connecting seat, and the connecting seat is in threaded connection with the base.
5. The internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace as set forth in claim 4, wherein: the cavity is spaced between the connecting seat and the top of the base, the side wall of the movable piece above the top of the base is also provided with an annular flange, the outer diameter of the annular flange is larger than the inner diameter of the cavity of the base, and the annular flange is provided with an inclined surface which is obliquely arranged downwards.
6. The internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace as set forth in claim 1, wherein: the fixed part is made of stainless steel, and the movable part is made of graphite.
7. The utility model provides a vacuum pumping material jar which characterized in that: the internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace comprises a tank body, an upper cover and an internal rotation type vacuumizing sealing assembly arranged on the upper cover, wherein the tank body is a sealed tank body, a charging hole is formed in the top of the tank body, a flange is arranged around the charging hole, the upper cover is covered on the charging hole and movably connected with the flange to seal the tank body, a mounting hole for mounting the internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace is formed in the upper cover, and the mounting hole is communicated with the inside of the tank body and an air inlet channel of the internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace, and the internal rotation type vacuumizing sealing assembly for the high-temperature vacuum sintering furnace is one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695186.5A CN108489261B (en) | 2018-06-29 | 2018-06-29 | Internal rotation type vacuumizing sealing assembly for high-temperature vacuum sintering furnace and vacuumizing charging bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695186.5A CN108489261B (en) | 2018-06-29 | 2018-06-29 | Internal rotation type vacuumizing sealing assembly for high-temperature vacuum sintering furnace and vacuumizing charging bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108489261A CN108489261A (en) | 2018-09-04 |
| CN108489261B true CN108489261B (en) | 2024-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810695186.5A Active CN108489261B (en) | 2018-06-29 | 2018-06-29 | Internal rotation type vacuumizing sealing assembly for high-temperature vacuum sintering furnace and vacuumizing charging bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108489261B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4509179A (en) * | 1983-09-27 | 1985-04-02 | Autoclave Engineers, Inc. | Vacuum sintering and hot isostatic pressing in the same vessel |
| CN201269689Y (en) * | 2008-08-21 | 2009-07-08 | 万向集团公司 | Atmosphere sintering furnace |
| CN205607128U (en) * | 2016-03-07 | 2016-09-28 | 苏州大学 | Vacuum sintering furnace with cooling device |
| CN107941009A (en) * | 2017-10-27 | 2018-04-20 | 宁波恒普真空技术有限公司 | A kind of vacuum degreasing fritting furnace and method |
| CN107966022A (en) * | 2017-12-21 | 2018-04-27 | 宁夏昇力恒真空设备有限公司 | Flange seal attachment device and ultrahigh vacuum sintering furnace |
| CN208398618U (en) * | 2018-06-29 | 2019-01-18 | 宁夏昇力恒真空设备有限公司 | High-temperature vacuum sintering furnace inner-rotary type vacuum-pumping density sealing assembly and vacuumize batch can |
-
2018
- 2018-06-29 CN CN201810695186.5A patent/CN108489261B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4509179A (en) * | 1983-09-27 | 1985-04-02 | Autoclave Engineers, Inc. | Vacuum sintering and hot isostatic pressing in the same vessel |
| CN201269689Y (en) * | 2008-08-21 | 2009-07-08 | 万向集团公司 | Atmosphere sintering furnace |
| CN205607128U (en) * | 2016-03-07 | 2016-09-28 | 苏州大学 | Vacuum sintering furnace with cooling device |
| CN107941009A (en) * | 2017-10-27 | 2018-04-20 | 宁波恒普真空技术有限公司 | A kind of vacuum degreasing fritting furnace and method |
| CN107966022A (en) * | 2017-12-21 | 2018-04-27 | 宁夏昇力恒真空设备有限公司 | Flange seal attachment device and ultrahigh vacuum sintering furnace |
| CN208398618U (en) * | 2018-06-29 | 2019-01-18 | 宁夏昇力恒真空设备有限公司 | High-temperature vacuum sintering furnace inner-rotary type vacuum-pumping density sealing assembly and vacuumize batch can |
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| Publication number | Publication date |
|---|---|
| CN108489261A (en) | 2018-09-04 |
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Country or region after: China Address after: 753000 high tech Industrial Park, Shizuishan City, Ningxia Hui Autonomous Region (West of Century Avenue and south of Ziqiang Road) Applicant after: Shengliheng (Ningxia) Vacuum Technology Co.,Ltd. Address before: No.9-7 factory building in science and Technology Incubation Park of high tech Industrial Park, Dawukou District, Shizuishan City, Ningxia Hui Autonomous Region Applicant before: NINGXIA SINCERE VACUUM EQUIPMENT CO.,LTD. Country or region before: China |
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