CN203356596U - Metal powder injection-molding vacuum-degreasing sintering furnace with partial pressure sintering control device - Google Patents
Metal powder injection-molding vacuum-degreasing sintering furnace with partial pressure sintering control device Download PDFInfo
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- CN203356596U CN203356596U CN2013204530830U CN201320453083U CN203356596U CN 203356596 U CN203356596 U CN 203356596U CN 2013204530830 U CN2013204530830 U CN 2013204530830U CN 201320453083 U CN201320453083 U CN 201320453083U CN 203356596 U CN203356596 U CN 203356596U
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Abstract
The utility model relates to a metal powder injection-molding vacuum-degreasing sintering furnace, and discloses a metal powder injection-molding vacuum-degreasing sintering furnace with a partial pressure sintering control device. The metal powder injection-molding vacuum-degreasing sintering furnace comprises a furnace body, a feed box and the partial pressure sintering control device, wherein the feed box is arranged in the furnace body, and the partial pressure sintering control device comprises a partial pressure pipeline and an air inlet pipeline. A proportional regulation valve is arranged on the partial pressure pipeline, and a quality and flow controller is arranged on the air inlet pipeline. In the partial pressure sintering process, through the matched use of the quality and flow controller and the proportional regulation valve, the metal powder injection-molding vacuum-degreasing sintering furnace ensures the constant filled gas flow and the constant inner pressure of the feed box, so that the stable sintering process is realized, and the effects of improving the product performance and the product quality is realized.
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 with dividing potential drop sintering control device.
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 the 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 to 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, obtain the prefabricated component of definite shape, size through the cooling shaping depanning, deviate from again the binding agent in prefabricated component and carry out sintering, the product that can obtain having certain mechanical performance.Its forming technology flow process is as follows: 1. metal dust and binding agent batch mixing, 2. be shaped, and 3. degreasing, 4. sintering, 5. post processing, 6. finished product.
Wherein, degreasing and sintering are the steps of most critical.Degreasing is that the shaping base is removed the process of 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 close changing into as having the goods of certain tissue and performance.
Metal current powder injection forming vacuum degreasing fritting furnace has degreasing and is sintered in the function of one.The inner primary structure of body of heater, except calandria and heat-insulation layer, also is provided with an airtight hopper, and hopper is provided with safety valve, and hopper is inner to communicate with connecting pipe under stove, and the hopper outside communicates with the admission line on being arranged on body of heater.In the dividing potential drop sintering process; the calandria heating; generally more than 600 ℃; admission line constantly is filled with protective gas; gas enters hopper inside by crack between a door and its frame and the safety valve at hopper two ends; and be pumped from a minute pressure pipeline, thereby by the control to the dividing potential drop pipeline valve, the hopper internal pressure is regulated.Now crucial problem is how to guarantee to be filled with the constant flow of gas, can keep again hopper internal control constant pressure simultaneously.The air-flow changed and the pressure of variation can make hopper inside temperature distributing disproportionation and the evaporation of part material component everywhere, thereby obtain different sintering result.
Similarly, in vacuum degreasing fritting furnace, the Intaker controller in admission line generally is comprised of on-off valve, choke valve and spinner flowmeter etc.; Divide the exhaust control device of pressure pipeline generally to be formed by manually-operated gate, on-off valve etc.When the dividing potential drop sintering, be filled with the flow-control of gas mainly by regulating in advance the aperture of choke valve in admission line, making the flow indication in spinner flowmeter is the setting flow, then realizes controlling by the switching of controlling on-off valve.This Intaker controller can't be real-time charge flow rate is automatically adjusted, flow can change along with the variation of on-off valve two ends pressure reduction, therefore flow-control is not very accurate, this inlet duct can only be regulated a flow value in advance simultaneously, the air inlet pipeline can only increase again by a road is controlled in the selection that wants to carry out at operation stage a plurality of flows, and flexibility is poor.
Divide the control of pressure pressure mainly by manually-operated gate in minute pressure pipeline, the adjusting of the speed of exhaust and the open and close controlling of on-off valve to be realized, need to set the open and close that two pressure are controlled on-off valve.Because the open and close controlling of on-off valve, will certainly cause the fluctuation up and down of dividing potential drop controlled pressure, all can be influential to uniformity and the part material component evaporation control of hopper internal temperature, finally affect properties of product.
Summary of the invention
The utility model is inaccurate for Intaker controller flow-control in prior art, and can not automatically control, it is poor that it controls flexibility, the pressure controlled fluctuation up and down of exhaust control device dividing potential drop, thereby have influence on the shortcoming of properties of product, a kind of metal powder injection molded vacuum degreasing fritting furnace with dividing potential drop sintering control device is provided.
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 with dividing potential drop sintering control device, comprise body of heater and hopper, also comprise dividing potential drop sintering control device, dividing potential drop sintering control device comprises minute pressure pipeline and admission line, divide pressure pipeline to be provided with the ratio adjusting valve door, admission line is provided with mass flow controller.The ratio adjusting valve door is the valve with the PID function, can automatically regulate deflation rate according to the setting requirement that is filled with gas flow and minute pressure pressure, makes the hopper internal pressure remain constant; Mass flow controller can effectively carry out accurate measurement and control to the mass flow of gas or liquid, guarantees that the gas flow be filled with is constant, and can respond at any time different flow set requirements.
As preferably, the dividing potential drop device for cleaning pipeline is crossed connecting pipe under stove and is communicated with hopper inside.Divide the pressure of pressure pipeline for exhaust and control hopper inside.
As preferably, admission line is connected with body of heater, and with the hopper exterior.Admission line is for inflation.
As preferably, divide a pressure pipeline to be provided with the first pressure sensor.The first pressure sensor divides the pressure on pressure pipeline for measurement, demonstration, and, by the deflation rate of the automatic control ratio control valve of this pressure information, makes the hopper internal pressure remain constant.
The utility model changes the on-off valve in admission line, choke valve and spinner flowmeter into mass flow controller, the ducted manually-operated gate of dividing potential drop, on-off valve change the ratio adjusting valve door into, wherein mass flow controller can effectively carry out accurate measurement and control to the mass flow of gas or liquid, the gas flow that assurance is filled with is constant, and can respond at any time different flow set requirements; The ratio adjusting valve door is the valve with the PID function, can automatically regulate deflation rate according to the setting requirement that is filled with gas flow and minute pressure pressure, makes the hopper internal pressure remain constant; In the dividing potential drop sintering process, by being used in conjunction with of mass flow controller and ratio adjusting valve door, guaranteeing the constant and hopper inner pressure constant of the gas flow be filled with, thereby realize stable sintering process, reach and improve properties of product, the effect of Improving The Quality of Products.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The toponym that in accompanying drawing, each number designation refers to is as follows: wherein connecting pipe, the 13-the second on-off valve under 1-body of heater, 2-hopper, 3-minute pressure pipeline, 4-ratio adjusting valve door, 5-admission line, 6-mass flow controller, 7-degreasing pipeline, the 8-the first pressure sensor, 9-vavuum pump, the 10-the second pressure sensor, the 11-the first on-off valve, 12-stove.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
Metal powder injection molded vacuum degreasing fritting furnace with dividing potential drop sintering control device, as shown in Figure 1, the flow direction that arrow in Fig. 1 is gas, comprise body of heater 1 and the hopper 2 that is arranged on body of heater 1 inside, also comprise dividing potential drop sintering control device, dividing potential drop sintering control device comprises minute pressure pipeline 3 and admission line 5, and a minute pressure pipeline 3 is provided with ratio adjusting valve door 4, and admission line 5 is provided with mass flow controller 6.Hopper 2 belows are provided with connecting pipe 12 under stove, and under stove, connecting pipe 12 all is connected with a minute pressure pipeline 3 with degreasing pipeline 7, and degreasing pipeline 7 communicates with hopper 2 inside by connecting pipe under stove 12, and degreasing pipeline 7 is connected with vavuum pump 9.Divide pressure pipeline 3 to communicate with hopper 2 inside by connecting pipe under stove 12, a minute pressure pipeline 3 is connected with vavuum pump 9.Divide on pressure pipeline 3 and also be provided with the first on-off valve 11, in the present embodiment, the first on-off valve 11 is one.
Divide pressure pipeline 3 to be provided with the first pressure sensor 8.
Body of heater 1 is provided with the second pressure sensor 10, the second pressure sensors 10 for showing the pressure of body of heater 1 inside, and degreasing pipeline 7 is provided with the second on-off valve 13, and in the present embodiment, the second on-off valve 13 is two.The second on-off valve 13 is used for controlling the switching of degreasing pipeline 7.
The course of work of dividing potential drop sintering control device of the present utility model is as follows:
In the dividing potential drop sintering process, set in advance the dividing potential drop force value of inlet air flow value and minute pressure pipeline 3 of admission line 5, the first pressure sensor 8 shows the force value of minute pressure pipeline 3 inside, and the second pressure sensor 10 shows that body of heater 1 inside is the force value of hopper 2 outsides; Ratio adjusting valve door 4, the first on-off valve 11 and mass flow controller 6 are all opened, the second on-off valve 13 on degreasing pipeline 7 is closed, vavuum pump 9 work are bled, by ratio adjusting valve door 4 basis sets automatically the inlet air flow value that is filled with body of heater 1 inside and dividing potential drop force value, automatically regulate the deflation rate of minute pressure pipeline 3, make hopper 2 internal pressures remain constant; Mass flow controller 6 carries out accurate measurement and control according to the inlet air flow value set to the mass flow of gas, it is constant that assurance is filled with the gas flow of body of heater 1 inside, now hopper 2 inside and outside differential pressures are constant, and in this process, gas is directed flow, enter body of heater 1 inside from admission line 5, then enter hopper 2 inside by crack between a door and its frame and the safety valve at hopper 2 two ends, and be pumped from a minute pressure pipeline 3.
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 (4)
1. with the metal powder injection molded vacuum degreasing fritting furnace of dividing potential drop sintering control device, comprise body of heater (1) and hopper (2), it is characterized in that: also comprise dividing potential drop sintering control device, dividing potential drop sintering control device comprises a minute pressure pipeline (3) and admission line (5), divide pressure pipeline (3) to be provided with ratio adjusting valve door (4), admission line (5) is provided with mass flow controller (6).
2. the metal powder injection molded vacuum degreasing fritting furnace with dividing potential drop sintering control device according to claim 1, is characterized in that: divide a pressure pipeline (3) to communicate with hopper (2) inside by connecting pipe under stove (12).
3. the metal powder injection molded vacuum degreasing fritting furnace with dividing potential drop sintering control device according to claim 1, it is characterized in that: admission line (5) is connected with body of heater (1), and with hopper (2) exterior.
4. the metal powder injection molded vacuum degreasing fritting furnace with dividing potential drop sintering control device according to claim 1 and 2, is characterized in that: divide a pressure pipeline (3) to be provided with the first pressure sensor (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013204530830U CN203356596U (en) | 2013-07-26 | 2013-07-26 | Metal powder injection-molding vacuum-degreasing sintering furnace with partial pressure sintering control device |
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| CN2013204530830U CN203356596U (en) | 2013-07-26 | 2013-07-26 | Metal powder injection-molding vacuum-degreasing sintering furnace with partial pressure sintering control device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084581A (en) * | 2014-06-16 | 2014-10-08 | 四川盛马粉末冶金科技有限公司 | Vacuum degreasing sintering furnace |
| CN106735226A (en) * | 2017-01-20 | 2017-05-31 | 宁波恒普真空技术有限公司 | Multizone control climate metal injection moulding vacuum sintering furnace |
| CN106825580A (en) * | 2017-02-23 | 2017-06-13 | 深圳市星特烁科技有限公司 | A kind of catalysis degreasing stove with atmosphere purification function |
| 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 |
| CN109530685A (en) * | 2018-12-29 | 2019-03-29 | 株洲万融新材科技有限公司 | Vacuum degreasing sintered forming method |
| CN109759582A (en) * | 2018-12-29 | 2019-05-17 | 株洲万融新材科技有限公司 | Vacuum degreasing sintered system |
| CN110494237A (en) * | 2017-03-28 | 2019-11-22 | 日本电产株式会社 | Vacuum degreasing fritting furnace |
| WO2021189564A1 (en) * | 2020-03-26 | 2021-09-30 | 宁波恒普真空技术有限公司 | Vacuum degreasing and sintering furnace with dual internal pumping lower pipes |
-
2013
- 2013-07-26 CN CN2013204530830U patent/CN203356596U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084581B (en) * | 2014-06-16 | 2016-07-13 | 宁波渝鑫金属粉末科技有限公司 | Vacuum degreasing fritting furnace |
| CN104084581A (en) * | 2014-06-16 | 2014-10-08 | 四川盛马粉末冶金科技有限公司 | Vacuum degreasing sintering furnace |
| CN106735226A (en) * | 2017-01-20 | 2017-05-31 | 宁波恒普真空技术有限公司 | Multizone control climate metal injection moulding vacuum sintering furnace |
| CN106825580A (en) * | 2017-02-23 | 2017-06-13 | 深圳市星特烁科技有限公司 | A kind of catalysis degreasing stove with atmosphere purification function |
| CN106825580B (en) * | 2017-02-23 | 2019-07-12 | 深圳市星特烁科技有限公司 | A kind of catalysis degreasing furnace with atmosphere purification function |
| CN110494237B (en) * | 2017-03-28 | 2022-03-08 | 日本电产株式会社 | Vacuum degreasing sintering furnace |
| CN110494237A (en) * | 2017-03-28 | 2019-11-22 | 日本电产株式会社 | Vacuum degreasing fritting 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 |
| CN108405855B (en) * | 2018-06-07 | 2024-03-15 | 宁波恒普技术股份有限公司 | Degreasing sintering furnace for metal powder injection molding |
| CN109759582A (en) * | 2018-12-29 | 2019-05-17 | 株洲万融新材科技有限公司 | Vacuum degreasing sintered system |
| CN109530685B (en) * | 2018-12-29 | 2021-01-15 | 株洲万融新材科技有限公司 | Vacuum degreasing sintering forming method |
| CN109530685A (en) * | 2018-12-29 | 2019-03-29 | 株洲万融新材科技有限公司 | Vacuum degreasing sintered forming method |
| WO2021189564A1 (en) * | 2020-03-26 | 2021-09-30 | 宁波恒普真空技术有限公司 | Vacuum degreasing and sintering furnace with dual internal pumping lower pipes |
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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 | ||
| 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |