CN216729562U - Auxiliary device for walking beam type continuous degreasing sintering furnace - Google Patents
Auxiliary device for walking beam type continuous degreasing sintering furnace Download PDFInfo
- Publication number
- CN216729562U CN216729562U CN202123421623.0U CN202123421623U CN216729562U CN 216729562 U CN216729562 U CN 216729562U CN 202123421623 U CN202123421623 U CN 202123421623U CN 216729562 U CN216729562 U CN 216729562U
- Authority
- CN
- China
- Prior art keywords
- section
- sintering
- walking beam
- furnace body
- furnace
- 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.)
- Active
Links
Images
Landscapes
- Tunnel Furnaces (AREA)
Abstract
The utility model discloses an auxiliary device for a walking beam type continuous degreasing sintering furnace, and relates to the technical field related to the walking beam type continuous degreasing sintering furnace; the continuous degreasing sintering furnace comprises a walking beam type continuous degreasing sintering furnace with a charging section, a preheating section, a catalytic degreasing section, a transverse transfer conveying section, a residual binder removing section, a sintering section, a cooling section, a bypass conveying section and a cooling outlet transverse conveying section, and is characterized in that: be provided with auxiliary device in the sintering section of walking beam formula continuous degreasing sintering stove, auxiliary device includes that air inlet unit and level run through the high temperature muffle structure of sintering section, the inside current and the gaseous circulation of sintering that is used for the material boat of high temperature muffle structure, air inlet unit can to let in reducing gas in the sintering section. The utility model ensures that the temperatures of the upper layer and the lower layer of the sintered product are uniform, and avoids the pollution of a heating device in the furnace; the sintering yield of the product is improved, and the comprehensive cost of customers is reduced.
Description
Technical Field
The utility model relates to the technical field related to a walking beam type continuous degreasing sintering furnace, in particular to an auxiliary device for the walking beam type continuous degreasing sintering furnace.
Background
The metal powder injection molding is a novel powder metallurgy near-net shape molding technology formed by introducing the modern plastic injection molding technology into the field of powder metallurgy. The walking beam type continuous degreasing sintering furnace can be used for metal powder injection molding.
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 the die cavity at a certain temperature, speed and pressure by an injection machine, the die cavity is cooled, shaped and demolded 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 comprises the following steps of 1 mixing metal powder and a binder, 2 forming, 3 degreasing, 4 sintering, 5 post-processing and 6 finishing.
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 different parts of the compact along the tiny channels between the particles without compromising the high strength of the formed blank. 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. In addition, a large amount of gas containing the adhesive in the hearth can pollute the heater, accelerate the aging of the heater and cause the heater to break.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an auxiliary device for a walking beam type continuous degreasing sintering furnace, which is used for solving the problems in the prior art, so that the temperatures of the upper layer and the lower layer of a sintered product are uniform, and the pollution of a heating device in the furnace is avoided; the sintering yield of the product is improved, and the comprehensive cost of customers is reduced.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides an auxiliary device for a walking beam type continuous degreasing sintering furnace, which comprises a charging section, a preheating section, a catalytic degreasing section, a transverse transfer conveying section, a residual binder removing section, a sintering section, a cooling section, a bypass conveying section and a cooling outlet transverse conveying section.
Optionally, the high temperature muffle structural seal set up in the sintering section, and sintering gas can be in one-way circulation in the high temperature muffle structural, the high temperature muffle structure runs through whole sintering section, has certain leakproofness, provides a relative inclosed operation passageway for the material boat, has changed the heating method to the sintered product, and it is inhomogeneous to have solved the upper and lower layer temperature of sintered product, and the problem that sintering gas flow direction is chaotic and a large amount of polluting gas arouses heater life-span in the stove.
Optionally, the sintering section comprises a furnace body and a furnace body upper cover, the furnace body comprises a heat preservation area, a heat insulation area and a fire resistant area which are sequentially arranged from outside to inside, and the furnace body upper cover is fixed on the upper part of the furnace body; the reasonable positions of the upper cover and the side wall of the furnace body are provided with air inlet devicesPlacing; and the gas inlet device is filled with reducing gas (hydrogen) to protect the heater. The high-temperature muffle structure is arranged in the furnace body, and products in the material boat are all in the high-temperature muffle structure; the side wall of the furnace body is provided with a heating device which does not directly radiate the product. The high-temperature muffle structure is made of high-purity Al2O3And the high-temperature resistance is excellent.
Optionally, an opening is formed in the bottom of the high-temperature muffle structure, the opening in the bottom of the high-temperature muffle structure and the refractory bricks, the heat insulation bricks and the heat insulation bricks at the bottom of the furnace body jointly form an operation channel of the walking beam, and the walking beam is used for realizing the transportation of the material boat through stepping motion in the operation channel.
Optionally, the air inlet device comprises an air inlet pipeline penetrating through the upper cover of the furnace body or the side wall of the furnace body, and one end of the air inlet pipeline, which is positioned outside the sintering section, is connected with an external air source through a control valve.
Optionally, the heating device includes an upper molybdenum heating member and a lower molybdenum heating member which are arranged on the inner wall of the furnace body, the upper molybdenum heating member is provided with an upper thermocouple, the lower molybdenum heating member is provided with a lower thermocouple, and the upper thermocouple and the lower thermocouple are respectively inserted into the side wall of the furnace body.
Optionally, the heat insulation area comprises a side wall heat insulation cotton plate and a bottom heat insulation brick; the heat insulation area comprises heat insulation bricks arranged on the inner sides of the side wall heat insulation cotton plate and the bottom heat insulation brick; the refractory area comprises refractory bricks arranged on the inner side of the heat insulation bricks.
Optionally, the furnace body upper cover comprises a cover body, and heat preservation fillers, heat insulation bricks and refractory bricks are sequentially arranged in the cover body from top to bottom; the heat preservation filler, the heat insulation bricks and the refractory bricks are sequentially arranged in the cover body through the ceiling bricks.
Compared with the prior art, the utility model has the following technical effects:
according to the auxiliary device for the walking beam type continuous degreasing sintering furnace, the material boat runs in the high-temperature muffle structure, so that the heating mode of a product is changed from direct heating to indirect heating, the heater heats the high-temperature muffle structure, and then the high-temperature muffle structure heats the product in the material boat; the change to the product heating method makes the temperature fluctuation around the product less, and the product is heated more evenly, and the size is more stable, improves the yield of product sintering. The structure provides a one-way channel for the flow of sintering gas, stabilizes the direction of air flow, ensures good fluidity of the gas in the channel, and takes away pollutants by the air flow through each layer of material plate in the material boat so as to prevent the pollutants from being deposited and influence the sintering quality. The high-temperature muffle structure has certain sealing performance, the side surface and the upper air inlet device are increased, so that the external pressure of the high-temperature muffle structure is slightly greater than the internal pressure, the contaminated gas in the structure is prevented from diffusing outwards, the pollution of carbon atmosphere to the heater is reduced, and the heater is protected. The heat preservation area, the heat insulation area and the fireproof area jointly form a heat preservation and insulation structure of the furnace body, so that the temperature in the furnace body is maintained at about 1450 ℃, the stability of the internal temperature is ensured, the sintering condition of the product is met, and the sintering yield of the product is improved; meanwhile, the heat dissipation outside the furnace body is reduced, the energy consumption is reduced, and the production cost 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 required in the embodiments will be briefly described below, 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 that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of an auxiliary device for a walking beam type continuous degreasing sintering furnace according to the present invention;
FIG. 2 is a schematic front view of the walking beam type continuous degreasing sintering furnace of the present invention;
FIG. 3 is a schematic top view of a walking beam type continuous degreasing sintering furnace according to the present invention;
wherein, 1 is a charging section, 2 is a preheating section, 3 is a catalytic degreasing section, 4 is a transverse transfer conveying section, 5 is a residual adhesive removing section, 6 is a sintering section, 7 is a cooling section, 8 is a bypass conveying section, 9 is a cooling outlet transverse conveying section, 10 is a sealed chamber, 11 is a combustion device, 12 is an air inlet device, 13 is a high-temperature muffle structure, 14 is a material boat, 15 is a side wall heat preservation cotton plate, 16 is a bottom heat preservation brick, 17 is a heat insulation brick, 18 is a refractory brick, 19 is a cover body, 20 is a heat preservation filling material, 21 is a ceiling brick, 22 is a walking beam, 23 is an upper molybdenum heating body, 24 is a lower molybdenum heating body, 25 is an upper thermocouple, and 26 is a lower thermocouple.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The utility model aims to provide an auxiliary device for a walking beam type continuous degreasing sintering furnace, which is used for solving the problems in the prior art, so that the temperatures of the upper layer and the lower layer of a sintered product are uniform, and the pollution of a heating device in the furnace is avoided; the sintering yield of the product is improved, and the comprehensive cost of customers is reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The utility model provides an auxiliary device for a walking beam type continuous degreasing sintering furnace, which comprises a charging section 1, a preheating section 2, a catalytic degreasing section 3, a transverse transfer conveying section 4, a residual binder removing section 5, a sintering section 6, a cooling section 7, a bypass conveying section 8 and a cooling outlet transverse conveying section 9, wherein the transverse transfer conveying section 4 and the cooling outlet transverse conveying section 9 are symmetrically arranged at two ends, and a degreasing area, a sintering area and the bypass conveying section are arranged between the transverse transfer conveying section 4 and the cooling outlet transverse conveying section 9, as shown in fig. 1, fig. 2 and fig. 3; the degreasing area is formed by connecting a charging section 1, a preheating section 2, a catalytic degreasing section 3 and a sealing chamber; the sintering area is formed by connecting a residual adhesive removing section 5, a sintering section 6, a cooling section 7 and a sealing chamber; the degreasing area, the sintering area and the bypass conveying section are respectively connected with the transverse transfer conveying section 4 and the cooling outlet transverse conveying section 9 from head to tail. Be provided with auxiliary device in walking beam type continuous degreasing sintering furnace's sintering section 6, auxiliary device includes that air inlet unit 12 and level run through sintering section 6's high temperature muffle structure 13, and high temperature muffle structure 13 is inside to be used for the current of material boat 14 and the gaseous circulation of sintering, and air inlet unit 12 can let in reducing gas in to sintering section, and it can adopt hydrogen as reducing gas. High temperature muffle structure 13 is sealed to be set up in sintering section 6, the opening that communicates with other process structures is seted up at its both ends, and sintering gas can be in high temperature muffle structure 13 one-way circulation, high temperature muffle structure 13 runs through whole sintering section 6, certain leakproofness has, inside is used for sintering gas's one-way circulation, also for material boat 14 provides a relative inclosed operation passageway, it is inhomogeneous to have solved sintering product lower floor temperature, sintering gas flow direction confusion and a large amount of polluting gas in the stove arouse the short-lived problem of heater.
Preferably, the sintering section 6 comprises a furnace body and a furnace body upper cover, the furnace body comprises a heat insulation area, a heat insulation area and a fire resistant area which are sequentially arranged from outside to inside, and the heat insulation area comprises a side wall heat insulation cotton plate 15 and a bottom heat insulation brick 16; the heat insulation area comprises heat insulation bricks 17 arranged on the inner sides of the side wall heat insulation cotton plate 15 and the bottom heat insulation brick 16; the refractory zone comprises refractory bricks 18 arranged inside insulating bricks 17. The upper cover of the furnace body is fixed on the upper part of the furnace body, the upper cover of the furnace body comprises a cover body 19, and heat-preservation filler 20, heat-insulating bricks 17 and refractory bricks 18 are sequentially arranged in the cover body 19 from top to bottom; the heat preservation filling material 20, the heat insulation brick 17 and the refractory brick 18 are sequentially arranged in the cover body through a ceiling brick 21; air inlet devices are arranged at reasonable positions on the upper cover of the furnace body and the side wall of the furnace body; the gas inlet device is filled with reducing gas (hydrogen) to protect the heater. The high-temperature muffle structure 13 is arranged in the furnace body, and products in the material boat 14 are all in the high-temperature muffle structure 13; the side wall of the furnace body is provided with a heating device which does not directly radiate the product. The high-temperature muffle structure 13 is made of high-purity Al2O3, and has excellent high-temperature resistance. An opening is formed in the bottom of the high-temperature muffle structure 13, the opening in the bottom of the high-temperature muffle structure 13, a refractory brick 18, a heat insulation brick 17 and a heat insulation brick 16 at the bottom of the furnace body jointly form a running channel of the walking beam, and the walking beam 22 moves in the running channel in a stepping mode to convey the material boat 14.
The air inlet device 12 comprises an air inlet pipeline penetrating through the upper cover or the side wall of the furnace body, one end of the air inlet pipeline, which is positioned outside the sintering section, is connected with an external air source through a control valve, so that reducing gas H can be introduced into the furnace body2And the function of protecting the heating device is achieved. The heating device comprises an upper molybdenum heating body 23 and a lower molybdenum heating body 24 which are arranged on the inner wall of the furnace body, the upper molybdenum heating body 23 is provided with an upper thermocouple 25, the lower molybdenum heating body 24 is provided with a lower thermocouple 26, and the upper thermocouple 25 and the lower thermocouple 26 are respectively inserted into the side wall of the furnace body, so that the upper heating temperature and the lower heating temperature in the furnace body can be detected and controlled.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; 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 utility model.
Claims (8)
1. The utility model provides an auxiliary device for walking beam formula is degreasing sintering stove in succession, includes the walking beam formula is degreasing sintering stove in succession that has charging section, preheating section, catalytic degreasing section, horizontal transfer section, takes off surplus binder section, sintering section, cooling section, bypass conveying section, the horizontal conveying section of cooling outlet, its characterized in that: be provided with auxiliary device in the sintering section of walking beam formula continuous degreasing sintering stove, auxiliary device includes that air inlet unit and level run through the high temperature muffle structure of sintering section, the inside current and the gaseous circulation of sintering that is used for the material boat of high temperature muffle structure, air inlet unit can to let in reducing gas in the sintering section.
2. The auxiliary device for the walking-beam continuous degreasing sintering furnace according to claim 1, wherein: the high-temperature muffle structure is sealed in the sintering section, and sintering gas can flow in the high-temperature muffle structure in a one-way mode.
3. The auxiliary device for the walking-beam continuous degreasing sintering furnace according to claim 1, wherein: the sintering section comprises a furnace body and a furnace body upper cover, the furnace body comprises a heat preservation area, a heat insulation area and a fire-resistant area which are sequentially arranged from outside to inside, and the furnace body upper cover is fixed on the upper part of the furnace body; the high-temperature muffle structure is arranged in the furnace body, and products in the material boat are all in the high-temperature muffle structure; the heating device is arranged on the side wall of the furnace body, the heating device does not directly radiate products, the gas inlet devices are arranged on the upper cover of the furnace body and the side wall of the furnace body, and reducing gas is introduced into the gas inlet devices.
4. The auxiliary device for the walking beam type continuous degreasing sintering furnace as set forth in claim 3, wherein: the high-temperature muffle structure bottom is provided with an opening, the high-temperature muffle structure bottom opening with the firebrick, the insulating brick of furnace body bottom constitute jointly the operation passageway of walking beam, the walking beam is used for step motion realizes transporting of material boat in the operation passageway.
5. The auxiliary device for the walking beam continuous degreasing sintering furnace as claimed in claim 3, wherein: the air inlet device comprises an air inlet pipeline penetrating through the upper cover of the furnace body or the side wall of the furnace body, and one end, located outside the sintering section, of the air inlet pipeline is connected with an external air source through a control valve.
6. The auxiliary device for the walking beam type continuous degreasing sintering furnace as set forth in claim 3, wherein: the heating device comprises an upper molybdenum heating body and a lower molybdenum heating body which are arranged on the inner wall of the furnace body, the upper molybdenum heating body is provided with an upper thermocouple, the lower molybdenum heating body is provided with a lower thermocouple, and the upper thermocouple and the lower thermocouple are respectively inserted into the side wall of the furnace body.
7. The auxiliary device for the walking beam type continuous degreasing sintering furnace as set forth in claim 3, wherein: the heat preservation area comprises a side wall heat preservation cotton plate and a bottom heat preservation brick; the heat insulation area comprises heat insulation bricks arranged on the inner sides of the side wall heat insulation cotton plate and the bottom heat insulation brick; the refractory area comprises refractory bricks arranged on the inner side of the heat insulation bricks.
8. The auxiliary device for the walking beam type continuous degreasing sintering furnace as set forth in claim 3, wherein: the furnace body upper cover comprises a cover body, and heat preservation fillers, heat insulation bricks and refractory bricks are sequentially arranged in the cover body from top to bottom; the heat preservation filler, the heat insulation bricks and the refractory bricks are sequentially arranged in the cover body through the ceiling bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123421623.0U CN216729562U (en) | 2021-12-31 | 2021-12-31 | Auxiliary device for walking beam type continuous degreasing sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123421623.0U CN216729562U (en) | 2021-12-31 | 2021-12-31 | Auxiliary device for walking beam type continuous degreasing sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216729562U true CN216729562U (en) | 2022-06-14 |
Family
ID=81910752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123421623.0U Active CN216729562U (en) | 2021-12-31 | 2021-12-31 | Auxiliary device for walking beam type continuous degreasing sintering furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216729562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115533099A (en) * | 2022-09-23 | 2022-12-30 | 温州大学平阳智能制造研究院 | Multi-mode degreasing-sintering integrated heating furnace |
-
2021
- 2021-12-31 CN CN202123421623.0U patent/CN216729562U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115533099A (en) * | 2022-09-23 | 2022-12-30 | 温州大学平阳智能制造研究院 | Multi-mode degreasing-sintering integrated heating furnace |
| CN115533099B (en) * | 2022-09-23 | 2024-05-07 | 温州大学平阳智能制造研究院 | Multi-mode degreasing-sintering integrated heating furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103624237B (en) | A kind of magnesium alloy Anti-gravity casting device and method thereof | |
| CN216729562U (en) | Auxiliary device for walking beam type continuous degreasing sintering furnace | |
| CN201327292Y (en) | Continuous-type vacuum-atmosphere sintering furnace | |
| CN106079030B (en) | A kind of method for fast mfg of the calcium oxide-based ceramic-mould of powder overlay film | |
| CN105813815A (en) | Manufacturing method of heating unit and forming device of heating unit | |
| CN205980750U (en) | Four pushing plate furnace's of atmosphere protection furnace body | |
| CN108911749A (en) | A kind of preparation method of graphite-silicon carbide crucible | |
| CN102853670B (en) | Energy-saving and environmentally-friendly kiln body and vanadium-nitrogen alloy high-temperature sintering kiln adopting energy-saving and environmentally-friendly kiln body | |
| WO2015078210A1 (en) | Device for casting forming of amorphous alloy components | |
| CN201220483Y (en) | High temperature vacuum press | |
| CN106083205A (en) | A kind of method improving integral alumina base ceramic-mould elevated temperature strength by chemical vapor infiltration | |
| CN206803750U (en) | A kind of box atmosphere furnace of use for laboratory | |
| CN105964979B (en) | A kind of air tight high-temperature-resistant and anti-corrosion aluminum melt stalk | |
| CN102674867A (en) | Novel sand mould technology used for producing casting refractory material product | |
| CN210773377U (en) | Sintering device in production of lithium ion battery anode material | |
| CN215766457U (en) | Vacuum sintering furnace | |
| CN110255510A (en) | The method of gas heating synthesis manganese systems nitride | |
| CN203255972U (en) | Annular roasting oven | |
| CN112225573B (en) | Preparation method of vacuum packaging/microporous powder composite high-temperature heat insulation material | |
| CN107262643A (en) | A kind of lower blanking type precision forging device and method of high rib pulse current effect of thin plate | |
| CN106766879A (en) | Powder shakes kiln | |
| CN102674841A (en) | Production method of pure carbon seal ring | |
| CN208846432U (en) | A kind of incinerator insulating layer refractory lining structure | |
| CN114543531A (en) | High-strength porous heat-insulating refractory brick | |
| CN205798396U (en) | Inert gas shielding immersion heats difunctional low pressure casting stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee after: Ningbo Hengpu Technology Co.,Ltd. Address before: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee before: Ningbo Hengpu Vacuum Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |