CN203541527U - Interlayer pressure difference air intake device of metal powder injection molding vacuum degreasing sintering furnace - Google Patents
Interlayer pressure difference air intake device of metal powder injection molding vacuum degreasing sintering furnace Download PDFInfo
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- CN203541527U CN203541527U CN201320620780.0U CN201320620780U CN203541527U CN 203541527 U CN203541527 U CN 203541527U CN 201320620780 U CN201320620780 U CN 201320620780U CN 203541527 U CN203541527 U CN 203541527U
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Abstract
The utility model relates to a metal powder injection molding vacuum degreasing sintering furnace and discloses an interlayer pressure difference air intake device of a metal powder injection molding vacuum degreasing sintering furnace, which comprises a workbin, wherein an air accumulation interlayer and a pressure difference air intake device communicated with the gas accumulation interlayer are arranged on the workbin, the gas accumulation interlayer comprises a first door plate and a second door plate which are arranged on the workbin, and the pressure difference air intake device comprises a valve seat component connected with the first door plate and a valve element balance block. According to the utility model, the gas accumulation interlayer and the pressure difference air intake device communicated with the gas accumulation interlayer are arranged on the workbin, and adjustment for regional position air intake flow can be flexibly realized through the region arrangement of the pressure difference air intake device; the arrangement of the gas accumulation interlayer ensures that air flows passing through all directional airflow holes are basically the same due to the arrangement of the gas accumulation interlayer. Therefore, the condition that air evenly passes through each flitch inside the workbin can be ensured.
Description
Technical field
The utility model relates to metal powder injection molded vacuum degreasing fritting furnace, has related in particular to a kind of metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct.
Background technology
Metal powder injection molded, it is the new technology that traditional powder metallurgical technique combines with plastic forming technology, it is the product of the multidisciplinary intersections such as collection plastic forming technology, polymer chemistry, powder metallurgy technology and Metal Material Science, utilize mould injectable to be shaped, manufacture fast the constitutional detail of high density, high accuracy, complicated shape, can rapidly and accurately design philosophy be changed into the goods with a fixed structure, functional characteristic, and can directly mass-produce part, be the once new change of manufacturing technology industry.Its injection mechanism be: by injector by the mixture of metal dust and binding agent with certain temperature, speed and pressure inject and are full of die cavity, through cooling and shaping depanning, obtain the prefabricated component of definite shape, size, deviate from again the binding agent in prefabricated component and carry out sintering, can obtain having the product of certain mechanical performance.Its forming technology flow process is as follows: 1. metal dust and binding agent batch mixing, be 2. shaped, and 3. degreasing, 4. sintering, 5. post processing, 6. finished product.
Wherein, degreasing and sintering are the steps of most critical.Degreasing is the process that shaping base is removed contained binding agent in body before sintering.Degreasing process must guarantee that binding agent little by little discharges along the minim channel between particle from the different parts of briquet, and does not damage the high strength of shaping base.Sintering can make the degreasing blank of porous shrink densification becomes the goods with certain tissue and performance.
The inner primary structure of metal current powder injection forming vacuum degreasing fritting furnace body of heater is except calandria and thermal insulating material, also be provided with an airtight hopper, hopper is provided with safety valve, and hopper is inner to communicate with degreasing pipeline, and hopper is outside to communicate with the gas ducting being arranged on body of heater.In skimming processes, calandria heating, vavuum pump is constantly bled by degreasing pipeline, and gas ducting is constantly filled with protective gas, makes the inside and outside pressure reduction that forms of hopper, impels gas unidirectional to flow.Along with the rising of skimming temp, binding agent changes into gaseous state, by spreading and permeate through pore, arrives piece surface.Now crucial problem is that can binding agent be pulled away equably, guarantees that binding agent can not be deposited on part again.
In original structure, as shown in Figure 2, the gas outside hopper 1 mainly enters hopper 1 inside by crack between a door and its frame and the safety valve 20 at hopper 1 two ends, can not guarantee that the air-flow passing through on the inner every layered material plate 16 of hopper 1 is even.Inhomogeneous air-flow can make binding agent still be deposited on part, and simultaneously inhomogeneous air-flow also can cause temperature distributing disproportionation, thereby can make the performance that obtains after the product sintering of same stove variant.
Summary of the invention
The utility model is for not guaranteeing in prior art that the air-flow passing through on the inner every layered material plate of hopper is even, cause binding agent to be still deposited on part, thereby the problem that the performance obtaining after the product sintering of same stove is had nothing in common with each other, provide a kind of air-flow of passing through on every layered material plate in hopper of making even, thoroughly removed the metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct of binding agent.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct, comprise hopper, the pressure reduction inlet duct that hopper is provided with air accumulation interlayer and communicates with air accumulation interlayer, air accumulation interlayer comprises the first door-plate and the second door-plate that are arranged on hopper, the first door-plate and/or the second door-plate are provided with interlayer air inlet duct, thereby the second door-plate and the first door-plate are fitted and connected and form interlayer inlet channel, and pressure reduction inlet duct comprises the valve component and the spool balance weight that are connected with the first door-plate.The adjusting of position, feasible region charge flow rate more flexibly of pressure reduction inlet duct region division.Spool balance weight can rise and fall with the pressure difference inside and outside hopper, for controlling protective gas, flows into hopper.
As preferably, the first door-plate is connected with the second door-plate, and is arranged on hopper end face.The setting of the first door-plate, the second door-plate and pressure reduction inlet duct makes hopper entirety remain a closed structure, thereby can when degreasing and sintering, guarantee that the binding agent of part in hopper or other impurity can not pollute calandria, thermal insulating material and inboard wall of furnace body.
As preferably, interlayer inlet channel comprises the main inlet channel of interlayer and the interlayer that communicates with the main inlet channel of interlayer divides inlet channel.Interlayer inlet channel designs the uniformity that main inlet channel and interlayer divide the structure of inlet channel more effectively to improve gas flow to cross each windstream hole.
As preferably, the second door-plate is provided with the uniform windstream hole of arranging, and interlayer divides inlet channel to communicate with hopper inside by windstream hole.Windstream hole guarantees that gas passes through every layered material plate by the mode of precognition.
As preferably, the first door-plate is provided with air admission hole.
As preferably, valve component comprises valve seat and the bonnet being connected with the first door-plate, between valve seat and bonnet, is formed with cavity.
As preferably, valve seat is provided with the first duct communicating with cavity, and spool balance weight is arranged in cavity.
As preferably, pressure reduction inlet duct communicates with interlayer inlet channel by air admission hole and the first duct.
As preferably, the second door-plate is provided with some boss, and windstream hole is positioned on boss, and each boss is with to be arranged on each layered material plate in hopper corresponding, the concave surface laminating of the boss on flitch and the second door-plate.Flitch is used for placing part.The second door-plate and flitch one end face laminating, for guaranteeing that each the layered material plate in hopper is all mutually isolated through the gas behind windstream hole, can completely cut off the gas channel between this end of flitch and other flitch.The structure of boss makes windstream hole exits position more deep than the binding face of the second door-plate and flitch, and effectively preventing, because laminating does not closely circulate the gas that passes into each layered material plate mutually, affects uniformity.
The pressure reduction inlet duct that the utility model is provided with air accumulation interlayer and communicates with air accumulation interlayer on hopper, the adjusting of position, feasible region charge flow rate more flexibly of pressure reduction inlet duct region division; The setting of air accumulation interlayer can guarantee by the gas flow in each windstream hole basic identical, thereby guarantees that gas uniform ground is by each layered material plate in hopper; Air-flow, uniformly by after each layered material plate, can be realized the performance and the uniformity texts thereof that improve after part sintering, the such as corresponding raising of performance such as parts density after sintering, accessory size size, the also corresponding raising of the density isoparametric uniformity of height.
Accompanying drawing explanation
Fig. 1 is gas extraction system schematic diagram of the present utility model.
Fig. 2 is the air intake structure of hopper in prior art.
Fig. 3 is the air intake structure of the utility model hopper.
Fig. 4 is the I portion enlarged drawing of Fig. 3.
Fig. 5 is the three-dimensional structure diagram of hopper.
Fig. 6 is the explosive view of Fig. 5.
Fig. 7 is structure 1 figure of interlayer inlet channel.
Fig. 8 is structure 2 figure of interlayer inlet channel.
Fig. 9 is structure 3 figure of interlayer inlet channel.
Figure 10 is structure 4 figure of interlayer inlet channel.
The toponym that in accompanying drawing, each number designation refers to is as follows: wherein 1-hopper, the 2-the first door-plate, the 3-the second door-plate, 4-interlayer air inlet duct, the main inlet channel of 5-interlayer, 6-interlayer divides inlet channel, 7-windstream hole, 8-air admission hole, 9-spool balance weight, 10-valve seat, 11-bonnet, 12-cavity, the 13-the first duct, 14-body of heater, 15-venthole, 16-flitch, 17-vavuum pump, 18-gas ducting, 19-column, 20-safety valve, 21-boss, 22-thermal insulating material, 23-calandria.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct, as shown in Fig. 1, Fig. 3 to Fig. 6, comprise hopper 1, the pressure reduction inlet duct that hopper 1 is provided with air accumulation interlayer and communicates with air accumulation interlayer, air accumulation interlayer comprises the first door-plate 2 and the second door-plate 3 that are arranged on hopper 1, and pressure reduction inlet duct comprises the valve component and the spool balance weight 9 that are connected with the first door-plate 2.
The first door-plate 2 is connected with the second door-plate 3, and is arranged on hopper 1 end face.
In the present embodiment, the first door-plate 2 is provided with interlayer air inlet duct 4, thereby the second door-plate 3 and the first door-plate 2 are fitted and connected formation interlayer inlet channel.
Interlayer inlet channel comprises the main inlet channel 5 of interlayer and the interlayer that communicates with the main inlet channel 5 of interlayer divides inlet channel 6.
The second door-plate 3 is provided with the uniform windstream hole 7 of arranging, and interlayer divides inlet channel 6 to communicate with hopper 1 inside by windstream hole 7.
The first door-plate 2 is provided with air admission hole 8.
Valve component comprises valve seat 10 and the bonnet 11 being connected with the first door-plate 2, between valve seat 10 and bonnet 11, is formed with cavity 12.
Pressure reduction inlet duct communicates with interlayer inlet channel by air admission hole 8 and the first duct 13.
In original state, the pressure balance of the pressure in cavity 12 and hopper 1 outside, spool balance weight 9 is positioned at 13 tops, the first duct, the intercommunication of isolated hopper 1 inside and outside gas.By vavuum pump 17, hopper 1 internal air exhausting and gas ducting 18 are inflated in hopper 1 outside, make the inside and outside pressure reduction that forms of hopper 1, when reaching certain pressure difference, pressure reduction inlet duct is opened, this pressure difference floats spool balance weight 9, the first duct 13 communicates with the main inlet channel 5 of interlayer of air accumulation interlayer, thereby gas enters interlayer inlet channel from the first duct 13, gas is introduced into the main inlet channel 5 of interlayer, flow to again each interlayer and divide inlet channel 6, uniform-flow is to the windstream hole 7 that leads to each layer again, and under the effect in windstream hole 7, flow through equably each layered material plate 16, the air-flow that whole process streams is crossed each layered material plate 16 reaches evenly desirable.
The main inlet channel 5 of interlayer and interlayer divide being provided with of inlet channel 6 multiple situation, below enumerate four kinds, and structure is specific as follows:
Be more than several situations of enumerating, but be not confined to this several situations.
Arrow in figure is expression gas flow.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (9)
1. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct, comprise hopper (1), it is characterized in that: the pressure reduction inlet duct that hopper (1) is provided with air accumulation interlayer and communicates with air accumulation interlayer, air accumulation interlayer comprises the first door-plate (2) and the second door-plate (3) that are arranged on hopper (1), the first door-plate (2) and/or the second door-plate (3) are provided with interlayer air inlet duct (4), the second door-plate (3) and the first door-plate (2) thus be fitted and connected and form interlayer inlet channel, pressure reduction inlet duct comprises the valve component and the spool balance weight (9) that are connected with the first door-plate (2).
2. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 1, is characterized in that: the first door-plate (2) is connected with the second door-plate (3), and is arranged on hopper (1) end face.
3. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 1 and 2, is characterized in that: interlayer inlet channel comprises the main inlet channel of interlayer (5) and the interlayer that communicates with the main inlet channel of interlayer (5) divides inlet channel (6).
4. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 3, it is characterized in that: the second door-plate (3) is provided with the uniform windstream hole (7) of arranging, interlayer divides inlet channel (6) to communicate with hopper (1) inside by windstream hole (7).
5. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 1 and 2, is characterized in that: the first door-plate (2) is provided with air admission hole (8).
6. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 5, it is characterized in that: valve component comprises valve seat (10) and the bonnet (11) being connected with the first door-plate (2), between valve seat (10) and bonnet (11), is formed with cavity (12).
7. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 6, it is characterized in that: valve seat (10) is provided with the first duct (13) communicating with cavity (12), and spool balance weight (9) is arranged in cavity (12).
8. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 7, is characterized in that: pressure reduction inlet duct communicates with interlayer inlet channel by air admission hole (8) and the first duct (13).
9. metal powder injection molded vacuum degreasing fritting furnace interlayer pressure reduction inlet duct according to claim 4, it is characterized in that: the second door-plate (3) is provided with some boss (21), windstream hole (7) is positioned on boss (21), each boss (21) is with to be arranged on each layered material plate (16) in hopper (1) corresponding, the concave surface laminating of the boss (21) on flitch (16) and the second door-plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620780.0U CN203541527U (en) | 2013-10-09 | 2013-10-09 | Interlayer pressure difference air intake device of metal powder injection molding vacuum degreasing sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620780.0U CN203541527U (en) | 2013-10-09 | 2013-10-09 | Interlayer pressure difference air intake device of metal powder injection molding vacuum degreasing sintering furnace |
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| Publication Number | Publication Date |
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| CN203541527U true CN203541527U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320620780.0U Expired - Lifetime CN203541527U (en) | 2013-10-09 | 2013-10-09 | Interlayer pressure difference air intake device of metal powder injection molding vacuum degreasing sintering furnace |
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| CN (1) | CN203541527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759582A (en) * | 2018-12-29 | 2019-05-17 | 株洲万融新材科技有限公司 | Vacuum degreasing sintered system |
-
2013
- 2013-10-09 CN CN201320620780.0U patent/CN203541527U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759582A (en) * | 2018-12-29 | 2019-05-17 | 株洲万融新材科技有限公司 | Vacuum degreasing sintered system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo, Zhejiang, 315300 Patentee 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 Patentee before: NINGBO HIPER VACUUM TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
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, Zhejiang, 315300 Patentee before: Ningbo Hengpu Vacuum Technology Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
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| CX01 | Expiry of patent term |