CN111299573A - Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace - Google Patents
Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace Download PDFInfo
- Publication number
- CN111299573A CN111299573A CN202010330871.5A CN202010330871A CN111299573A CN 111299573 A CN111299573 A CN 111299573A CN 202010330871 A CN202010330871 A CN 202010330871A CN 111299573 A CN111299573 A CN 111299573A
- Authority
- CN
- China
- Prior art keywords
- sintering furnace
- air inlet
- gas inlet
- temperature control
- sintering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005245 sintering Methods 0.000 title claims abstract description 84
- 238000005238 degreasing Methods 0.000 title claims abstract description 27
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 35
- 239000011733 molybdenum Substances 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011449 brick Substances 0.000 claims description 14
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 7
- 238000001746 injection moulding Methods 0.000 abstract description 7
- 238000004663 powder metallurgy Methods 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
Images
Classifications
-
- 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
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
-
- 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
- B22F3/003—Apparatus, e.g. furnaces
-
- 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
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- 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
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention discloses a multi-zone temperature control and air inlet device for a walking beam type continuous degreasing sintering furnace, and relates to the technical field of powder metallurgy injection molding. And (3) independently arranging heating bodies at the upper part and the lower part of the single area, and independently heating and controlling the upper temperature and the lower temperature of the single area. For a sintering furnace with large yield, the size deviation caused by different gas states is corrected by controlling the temperature up and down and modifying the temperature. The arrangement of the air inlet device leads clean hydrogen atmosphere to be directly introduced into the bottom and the upper part of the molybdenum heater, so that the carbon atmosphere is not easy to deposit, the molybdenum heater is protected, the upper atmosphere and the lower atmosphere in the furnace are adjusted, and the difference of sintering performances of products at the upper part and the lower part of the material boat is reduced. The air inlet hole is shared with the original thermocouple hole, so that the temperature control of the thermocouple is realized, air inlet is realized, and the air inlet holes are reduced.
Description
Technical Field
The invention relates to the technical field of powder metallurgy injection molding, in particular to a multi-zone temperature control and air inlet device for a walking beam type continuous degreasing sintering furnace.
Background
The walking beam type continuous degreasing sintering furnace is used for metal powder injection molding.
The metal powder injection molding introduces the modern plastic injection molding technology into the field of powder metallurgy to form a novel powder metallurgy near-net shape molding technology.
The metal powder injection molding is a new process combining the traditional powder metallurgy process and the plastic molding process, integrates the cross products of multiple subjects such as plastic molding technology, polymer chemistry, powder metallurgy technology, metal material science and the like, can quickly manufacture structural parts with high density, high precision and complex shapes by utilizing the injection molding of a mold, can quickly and accurately convert the design idea into products with certain structure and functional characteristics, can directly produce parts in batches, and is a new revolution in the manufacturing technology industry. The injection mechanism is as follows: the mixture of metal powder and binder is injected into a die cavity at a certain temperature, speed and pressure by an injection machine, the die cavity is cooled, shaped and removed to obtain a prefabricated part with a certain shape and size, and then the binder in the prefabricated part is removed and sintered to obtain a finished part with certain mechanical properties. The forming process flow is as follows: 1. mixing metal powder and a binder, 2, forming, 3, degreasing, 4, sintering, 5, post-processing and 6, and obtaining a finished product.
Among them, degreasing and sintering are the most critical steps. Degreasing is a process of removing the binder contained in the body of the formed body before sintering. The degreasing process must ensure that the binder is gradually expelled from the various portions of the compact along the tiny channels between the particles without compromising the high strength of the formed compact. Sintering can shrink and densify the porous degreased blank into a product with certain structure and performance.
In order to meet the increasing demand, the larger the furnace is, the higher the yield is, and the stability problem of the product is more and more obvious, which is mainly reflected in that the sintering temperature deviation of the upper part and the lower part in the same material boat is larger, thereby reflecting that the size deviation of the upper layer product and the lower layer product is larger, and the sintering yield of the product is low.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-zone temperature control and air inlet device for a walking beam type continuous degreasing sintering furnace, which aims to solve the problems of uneven temperature and atmosphere of the upper layer and the lower layer of a sintered product and short service life of a heater caused by carbon deposition.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a multi-zone temperature control and air inlet device for a walking beam type continuous degreasing sintering furnace, which comprises an upper thermocouple and an upper air inlet pipe which are arranged at the top of a sintering section of the sintering furnace, and a lower thermocouple and a lower air inlet pipe which are arranged at the lower parts of two sides of the sintering section of the sintering furnace, wherein molybdenum heating bodies are also arranged at two sides of a material boat in the sintering section of the sintering furnace.
Optionally, an upper mounting hole is formed in the top of the sintering section of the sintering furnace, lower mounting holes are formed in the lower portions of two sides of the sintering section of the sintering furnace, the upper thermocouple and the upper air inlet pipe are both arranged in the upper mounting hole, and the lower thermocouple and the lower air inlet pipe are both arranged in the lower mounting hole.
Optionally, a through channel is arranged inside the upper air inlet pipe, an air inlet is arranged on the side wall of the outer end of the upper air inlet pipe, and the upper thermocouple is arranged in the through channel.
Optionally, the through passage penetrates through refractory bricks in the sintering section of the sintering furnace.
Optionally, a middle channel is arranged inside the lower air inlet pipe, an air inlet is arranged on the outer end side wall of the lower air inlet pipe, and the lower thermocouple is arranged in the middle channel.
Optionally, the middle passage penetrates through refractory bricks in the sintering section of the sintering furnace.
Optionally, the molybdenum heating body comprises an upper molybdenum heating body and a lower molybdenum heating body; the upper molybdenum heating bodies are positioned on two sides of the upper part of the material boat, and the lower molybdenum heating bodies are positioned on two sides of the lower part of the material boat.
Optionally, the upper molybdenum heating body is connected with an upper lead-out structure, the lower molybdenum heating body is connected with a lower lead-out structure, and the upper lead-out structure and the lower lead-out structure are arranged in a left-right staggered manner.
Optionally, the side wall of the sintering section of the sintering furnace comprises a heat insulation cotton plate, a heat preservation brick and a refractory brick which are sequentially arranged from outside to inside; the molybdenum heating body is arranged on the inner side wall of the refractory brick.
Compared with the prior art, the invention has the following technical effects:
the multi-zone temperature control and air inlet device for the walking beam type continuous degreasing sintering furnace is characterized in that heating bodies are independently arranged at the upper part and the lower part of a single zone, and the single-zone upper temperature and the single-zone lower temperature are independently heated and controlled. For a sintering furnace with large yield, the size deviation caused by different gas states is corrected by controlling the temperature up and down and modifying the temperature. The arrangement of the air inlet device leads clean hydrogen atmosphere to be directly introduced into the bottom and the upper part of the molybdenum heater, so that the carbon atmosphere is not easy to deposit, the molybdenum heater is protected, the upper atmosphere and the lower atmosphere in the furnace are adjusted, and the difference of sintering performances of products at the upper part and the lower part of the material boat is reduced. The air inlet hole is shared with the original thermocouple hole, so that the temperature control of the thermocouple is realized, air inlet is realized, and the arrangement of the air inlet hole is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a multi-zone temperature control and gas inlet device for a walking beam type continuous degreasing sintering furnace according to the present invention;
FIG. 2 is a schematic structural diagram of upper and lower molybdenum heaters in a single zone of a multi-zone temperature control and air inlet device for a walking beam type continuous degreasing sintering furnace according to the present invention;
FIG. 3 is a schematic diagram of the arrangement position of the upper and lower molybdenum heaters in multiple zones of the multi-zone temperature control and air inlet device for the walking beam type continuous degreasing sintering furnace according to the present invention;
FIG. 4 is a schematic perspective view of the multi-zone temperature control and air inlet device with molybdenum heaters on the upper and lower regions for the walking beam type continuous degreasing sintering furnace according to the present invention;
FIG. 5 is a schematic sectional perspective view of the upper and lower lead-out structures of the molybdenum heater in the upper and lower regions of the multi-region temperature control and air inlet device for the walking beam type continuous degreasing sintering furnace according to the present invention.
Description of reference numerals: 1. an upper thermocouple; 2. heat preservation filling materials; 3. a ceiling brick; 4. a material boat; 5. a refractory brick; 6. insulating bricks; 7. a heat insulating cotton sheet; 8. a heat insulating brick; 9. a walking beam; 10. a lower thermocouple; 11. a lower molybdenum heating body; 12. a molybdenum heating body is arranged; 13. an upper intake pipe; 14. a lower lead-out structure; 15. an upper lead-out structure; 16. and a lower air inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment provides a multi-zone temperature control and air inlet device for a walking beam type continuous degreasing sintering furnace, which includes an upper thermocouple 1 and an upper air inlet pipe 13 disposed at the top of a sintering section of the sintering furnace, and a lower thermocouple 10 and a lower air inlet pipe 16 disposed at the lower portions of two sides of the sintering section of the sintering furnace, wherein molybdenum heating bodies are further disposed at two sides of a material boat 4 inside the sintering section of the sintering furnace.
In this embodiment, as shown in fig. 1-4, the upper and lower parts of a single region are individually provided with heating elements, that is, the top of the sintering section of the sintering furnace is provided with an upper thermocouple 1, the lower parts of the two sides of the sintering section of the sintering furnace are provided with lower thermocouples 10, and the two sides of the material boat are provided with an upper molybdenum heating element 12 and a lower molybdenum heating element 11, so as to perform individual heating control of the upper and lower temperatures of the single region, thereby making the sintering temperature of the furnace type with a larger yield more uniform.
The upper molybdenum heating body is connected with an upper lead-out structure 15, the lower molybdenum heating body is connected with a lower lead-out structure 14, and the upper lead-out structure 15 and the lower lead-out structure 14 are arranged in a left-right staggered mode.
For a sintering furnace with large yield, the gas consumption is also obviously increased, the gas environment states of the upper part and the lower part of the material boat 4 in the furnace are different, the stability of the product is influenced, and the size deviation caused by the different gas states is corrected by controlling the temperature up and down and modifying the temperature.
In order to make the gas environment state of the upper and lower parts of the material boat 4 more uniform, the upper and lower parts of a single area are separately provided with an air inlet device, namely, the top of the sintering section of the sintering furnace is provided with an upper air inlet pipe 13, the lower parts of the two sides of the sintering section of the sintering furnace are provided with lower air inlet pipes 16, so that clean hydrogen atmosphere is directly introduced to the bottom and the upper part of the molybdenum heating body, the carbon atmosphere is not easy to deposit, the molybdenum heating body is protected, the upper and lower atmospheres in the furnace can be adjusted to be uniform, and the sintering performance difference of the products at the.
In order to reduce air inlet holes, the thermocouple and the air inlet pipe are arranged in the same air inlet hole, namely, a through channel is arranged inside the upper air inlet pipe 13, an air inlet is arranged on the side wall of the outer end of the upper air inlet pipe 13, and the upper thermocouple 1 is arranged in the through channel. The hydrogen gas enters the furnace through the gap between the upper thermocouple 1 and the through channel. The lower air inlet pipe 16 is internally provided with a middle channel, the outer end side wall of the lower air inlet pipe 16 is provided with an air inlet, and the lower thermocouple 10 is arranged in the middle channel. Hydrogen gas enters the furnace through the gap between the lower thermocouple 10 and the middle passage. Therefore, the thermocouple and the air inlet pipe can be simultaneously installed by arranging the air inlet hole on the wall of the sintering section of the sintering furnace.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The multi-zone temperature control and air inlet device for the walking beam type continuous degreasing sintering furnace is characterized by comprising an upper thermocouple and an upper air inlet pipe which are arranged at the top of a sintering section of the sintering furnace, and a lower thermocouple and a lower air inlet pipe which are arranged at the lower parts of two sides of the sintering section of the sintering furnace, wherein molybdenum heating bodies are further arranged on two sides of a material boat in the sintering section of the sintering furnace.
2. The multi-zone temperature control and gas inlet device for the walking-beam continuous degreasing sintering furnace as claimed in claim 1, wherein an upper mounting hole is provided at the top of the sintering section of the sintering furnace, lower mounting holes are provided at the lower portions of both sides of the sintering section of the sintering furnace, the upper thermocouple and the upper gas inlet pipe are both disposed in the upper mounting hole, and the lower thermocouple and the lower gas inlet pipe are both disposed in the lower mounting hole.
3. The multi-zone temperature control and gas inlet device for the walking-beam continuous degreasing sintering furnace as claimed in claim 1, wherein a through channel is provided inside the upper gas inlet pipe, a gas inlet is provided on the outer end sidewall of the upper gas inlet pipe, and the upper thermocouple is provided in the through channel.
4. The multi-zone temperature control and gas inlet device for a walking-beam continuous degreasing sintering furnace as claimed in claim 3, wherein the through channel runs through refractory bricks in the sintering section of the sintering furnace.
5. The multi-zone temperature control and gas inlet device for the walking-beam continuous degreasing sintering furnace as claimed in claim 1, wherein the lower gas inlet pipe is internally provided with a middle channel, the outer end side wall of the lower gas inlet pipe is provided with a gas inlet, and the lower thermocouple is arranged in the middle channel.
6. The multi-zone temperature control and gas inlet device for a walking-beam continuous degreasing sintering furnace as claimed in claim 5, wherein the middle channel runs through refractory bricks in the sintering section of the sintering furnace.
7. The multi-zone temperature control and gas inlet device for the walking-beam continuous degreasing sintering furnace as claimed in claim 1, wherein the molybdenum heating body comprises an upper molybdenum heating body and a lower molybdenum heating body; the upper molybdenum heating bodies are positioned on two sides of the upper part of the material boat, and the lower molybdenum heating bodies are positioned on two sides of the lower part of the material boat.
8. The multi-zone temperature control and gas inlet device for the walking beam type continuous degreasing sintering furnace as claimed in claim 7, wherein the upper molybdenum heater is connected with an upper lead-out structure, the lower molybdenum heater is connected with a lower lead-out structure, and the upper lead-out structure and the lower lead-out structure are arranged in a left-right staggered manner.
9. The multi-zone temperature control and air inlet device for the walking-beam continuous degreasing sintering furnace as claimed in claim 1, wherein the side wall of the sintering section of the sintering furnace comprises an insulating cotton plate, insulating bricks and refractory bricks which are arranged in sequence from outside to inside; the molybdenum heating body is arranged on the inner side wall of the refractory brick.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330871.5A CN111299573A (en) | 2020-04-24 | 2020-04-24 | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace |
| PCT/CN2020/096910 WO2021212634A1 (en) | 2020-04-24 | 2020-06-19 | Multi-zone temperature control and air intake apparatus for walking beam type continuous degreasing sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330871.5A CN111299573A (en) | 2020-04-24 | 2020-04-24 | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111299573A true CN111299573A (en) | 2020-06-19 |
Family
ID=71152023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010330871.5A Pending CN111299573A (en) | 2020-04-24 | 2020-04-24 | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111299573A (en) |
| WO (1) | WO2021212634A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203687639U (en) * | 2013-12-11 | 2014-07-02 | 湖南红太阳光电科技有限公司 | Gas inlet device |
| CN205464323U (en) * | 2016-02-19 | 2016-08-17 | 宁波恒普真空技术有限公司 | Multi -region accuse temperature metal thermal field fritting furnace |
| CN108253792A (en) * | 2016-12-29 | 2018-07-06 | 中核建中核燃料元件有限公司 | Stepping beam type sintering furnace |
| CN108405855A (en) * | 2018-06-07 | 2018-08-17 | 宁波恒普真空技术有限公司 | It is a kind of to be used for metal powder injection molded degreasing sintered stove |
| CN110822894A (en) * | 2018-08-08 | 2020-02-21 | 中国电子科技集团公司第四十八研究所 | Roller way sintering furnace with uniform hearth temperature |
| CN212144497U (en) * | 2020-04-24 | 2020-12-15 | 宁波恒普真空技术有限公司 | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126993A (en) * | 1990-09-19 | 1992-04-27 | Kobe Steel Ltd | Deciding method for deterioration of adiabatic layer of hot isotropic pressurizer |
| JP2001012861A (en) * | 1999-07-01 | 2001-01-19 | Daido Steel Co Ltd | Vacuum furnace and method for operating the same |
| CN104896928B (en) * | 2015-06-17 | 2016-10-05 | 河南屹力新能源科技有限公司 | A kind of air pressure, temperature controlled high temperature sintering furnace |
| CN106702123A (en) * | 2016-12-26 | 2017-05-24 | 北京京诚凤凰工业炉工程技术有限公司 | Double-walking beam type heat treatment furnace |
| CN106621689B (en) * | 2017-02-23 | 2022-10-18 | 深圳市星特烁科技有限公司 | Gas purification and separation device for walking beam type continuous glue discharging sintering furnace |
| WO2019161214A1 (en) * | 2018-02-18 | 2019-08-22 | Markforged, Inc. | Sintering furnace |
-
2020
- 2020-04-24 CN CN202010330871.5A patent/CN111299573A/en active Pending
- 2020-06-19 WO PCT/CN2020/096910 patent/WO2021212634A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203687639U (en) * | 2013-12-11 | 2014-07-02 | 湖南红太阳光电科技有限公司 | Gas inlet device |
| CN205464323U (en) * | 2016-02-19 | 2016-08-17 | 宁波恒普真空技术有限公司 | Multi -region accuse temperature metal thermal field fritting furnace |
| CN108253792A (en) * | 2016-12-29 | 2018-07-06 | 中核建中核燃料元件有限公司 | Stepping beam type sintering furnace |
| CN108405855A (en) * | 2018-06-07 | 2018-08-17 | 宁波恒普真空技术有限公司 | It is a kind of to be used for metal powder injection molded degreasing sintered stove |
| CN110822894A (en) * | 2018-08-08 | 2020-02-21 | 中国电子科技集团公司第四十八研究所 | Roller way sintering furnace with uniform hearth temperature |
| CN212144497U (en) * | 2020-04-24 | 2020-12-15 | 宁波恒普真空技术有限公司 | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021212634A1 (en) | 2021-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104583139A (en) | Method for manufacturing glass material | |
| CN107159887B (en) | Forming method of heating material based on microwave absorption | |
| CA2411114A1 (en) | Burning furnace, burnt body producing method, and burnt body | |
| CN105728708B (en) | A kind of production method of high density long-life tungsten-molybdenum alloy crucible | |
| CN212144497U (en) | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace | |
| CN203710985U (en) | High-pressure mold | |
| CN107297866A (en) | A kind of injection mold of uniform fast cooling | |
| US4364881A (en) | Continuous extrusion method of manufacturing ceramic honeycomb structures with the aid of screw type vacuum extruding machine | |
| EP1245359A2 (en) | Apparatus for molding honeycomb structure and molding method | |
| CN111299573A (en) | Multi-zone temperature control and air inlet device for walking beam type continuous degreasing sintering furnace | |
| CN216729562U (en) | Auxiliary device for walking beam type continuous degreasing sintering furnace | |
| CN205927111U (en) | Metal powder injection molding continuous sintering stove | |
| CN1631577A (en) | Method for manufacturing die containing interior passageway and its application in directional solidification | |
| CN104529180B (en) | The production method of a kind of electric heating lamina membranacea and the equipment of production | |
| CN116353132A (en) | Graphite sagger forming die and forming control method thereof | |
| CN114472663B (en) | Method and device for carrying out warm forming on light alloy sheet metal part by taking thermal expansion graphite as force transfer medium | |
| CN107857597A (en) | A kind of preparation method of advanced structural ceramic | |
| CN101646537A (en) | Method of drying honeycomb molding | |
| CN111974992B (en) | Uniform heating device for forming of annular metal parts | |
| CN107903068A (en) | The technique for reducing large scale silicon carbide reaction-sintered internal stress | |
| CN212147328U (en) | Injection molding medical treatment mould | |
| CN107262643A (en) | A kind of lower blanking type precision forging device and method of high rib pulse current effect of thin plate | |
| RU2319574C1 (en) | Method for manufacturing built-up ceramic core for casting hollow articles | |
| CN201081539Y (en) | Butterfly type power saving oven | |
| CN101791688B (en) | Model-free rapid molding device based on surface tension and molding method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Applicant after: Ningbo Hengpu Vacuum Technology Co.,Ltd. Address before: 315300 no.488-560, North Youth Palace Road, Gutang street, Cixi City, Ningbo City, Zhejiang Province Applicant before: NINGBO HIPER VACUUM TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Applicant after: Ningbo Hengpu Technology Co.,Ltd. Address before: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Applicant before: Ningbo Hengpu Vacuum Technology Co.,Ltd. |
|
| CB02 | Change of applicant information |