CN204159874U - The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part - Google Patents
The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part Download PDFInfo
- Publication number
- CN204159874U CN204159874U CN201420298503.7U CN201420298503U CN204159874U CN 204159874 U CN204159874 U CN 204159874U CN 201420298503 U CN201420298503 U CN 201420298503U CN 204159874 U CN204159874 U CN 204159874U
- Authority
- CN
- China
- Prior art keywords
- sintering
- furnace shell
- furnace
- vacuum
- calandria
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
The utility model relates to vacuum sintering furnace technical field, is specifically related to the dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part, comprises the furnace shell opened the door at two ends, the support frame of furnace body supporting described furnace shell; In described furnace shell, the side's of being provided with body thermal insulation separation heat shielding, is provided with three groups of calandrias in described thermal insulation separation heat shielding, and described calandria is molybdenum sheet calandria, and described calandria is fixedly connected with described furnace shell by product bracing frame, and described calandria is connected with molybdenum electrode; The utility model is provided with molybdenum sheet calandria in furnace shell, this molybdenum sheet calandria is High-Purity Molybdenum material, thus make this dual-purpose sintering furnace both can realize vacuum-sintering pattern, also can realize atmosphere sintering pattern, and atmosphere sintering pattern not only can use inert gas, also can use the atmosphere sintering of fuel gas, thus can require to realize vacuum-sintering and atmosphere sintering conversion use according to the sintering of material, not only improve utilization rate of equipment and installations, and sintering efficiency can be improved.
Description
Technical field
The utility model relates to vacuum sintering furnace technical field, is specifically related to the dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part.
Background technology
In existing metal powder injection molded part manufacture process, its part needs to carry out degreasing sintered and vacuum-sintering by material at atmosphere sintering furnace and vacuum sintering furnace, and two kinds of sintering furnace sintering processes are as follows:
Its vacuum sintering furnace sintering process is: metal powder injection molded part is loaded vacuum sintering furnace, first vavuum pump, lobe pump is started, to being evacuated within high vacuum 10Pa in stove, carry out vacuum-sintering more under vacuum conditions, when sintering, then passing into the inert gas such as nitrogen, argon gas, making volatile matter in semi-finished product, flow out with air-flow, make the physical and chemical index of product reach designing requirement.Its atmosphere sintering furnace sintering process is: metal powder injection molded part is loaded atmosphere sintering furnace, opens vavuum pump, to extracting vacuum in stove; then, in stove, pass into a certain amount of protective atmosphere more under vacuum conditions, when vacuum in stove is after pressure-fired; opening pressure control valve, remaining oxygen in cleaning oven, after emptying 20 minutes; pass into fuel gas gas again; point burner, carry out atmosphere sintering, sintering temperature is to the condition of high temperature to 1600 degrees Celsius; after terminating, be down to room temperature gradually.In order to overcome the deficiency that above-mentioned sintering furnace exists, above-mentioned two kinds of sintering processes are needed to be integrated, literature search through prior art finds a patent document, wherein, Chinese invention patent Authorization Notice No. is CN 101655310 B, name is called: " 1800 degree of protective atmosphere vacuum sintering furnace with high temperature ", its control system is connected with the automatically controlled execution unit be arranged in vacuum sintering furnace, graphite grazing case is provided with in heating clamber, entering of high-temperature vacuum sintering furnace, blast pipe is connected with graphite grazing case, it is characterized in that sintering furnace applicable craft atmosphere sintering and vacuum-sintering, and implement power and energy measure by control program, this atmosphere vacuum sintering furnace process control: preparation is the power supply checking vacuum sintering furnace, source of the gas, water source, work out heating process flow process on the touchscreen, start vacuum sintering furnace, vacuumize in stove, two kinds of purposes are selected, and one is heating in vacuum, according to the heating process flow content of establishment, automatically heating schedule is started under vacuum state, to vacuum sintering furnace heating, heat up according to the heating process flow process of establishment, be finally warmed up to 1700-1800 DEG C, keep the heating process process requirements time, another kind of protective atmosphere sintering purposes: according to the heating process flow content of establishment, inert gas is filled with to seal box in stove, after having inflated, automatically starts heating schedule, finally rise to 1700-1800 DEG C, keep the heating process process requirements time, the step that above-mentioned two kinds of purposes use jointly: heating process terminates, stop heating, start Temperature fall, cool to setting temperature after, continue to be filled with inert gas, then start blower fan, vacuum sintering furnace enters pressure cooling procedure, after cooling to the temperature of setting, continue cooling, and start timing, after arriving setting-up time, cooling stops, and comes out of the stove.But due to the employing of this its calandria of atmosphere vacuum sintering furnace is graphite grazing case, easily produces carburizing, require that high material (below C:0.10%) can not use for phosphorus content during sintering.The another atmosphere that it uses is inert gas, and can not use reducing gas, can not ensure that the carbon content in material meets the requirements completely, its finally sintering finished impact, tensile property can not meet the demands.
Summary of the invention
The purpose of this utility model is to provide and a kind ofly can requires to realize vacuum-sintering according to the sintering of material and atmosphere sintering conversion uses; not only improve utilization rate of equipment and installations, and the dual-purpose sintering furnace of vacuum protection atmosphere of the metal powder injection molded part sintering efficiency can be improved.
In order to solve the problem existing for background technology, the utility model is by the following technical solutions: the dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part, comprises the furnace shell opened the door at two ends, the support frame of furnace body supporting described furnace shell; In described furnace shell, the side's of being provided with body thermal insulation separation heat shielding, is provided with three groups of calandrias in described thermal insulation separation heat shielding, and described calandria is molybdenum sheet calandria, and described calandria is fixedly connected with described furnace shell by product bracing frame, and described calandria is connected with molybdenum electrode; The top of described furnace shell is provided with temperature thermocouple, and described temperature thermocouple to be connected with described calandria with thermal insulation separation heat shielding through described furnace shell successively; Air inlet pipe communicates with thermal insulation separation heat shielding through described furnace shell, and escape pipe communicates with thermal insulation separation heat shielding through described furnace shell, and vavuum pump is connected with described furnace shell by pipeline.
Further, described thermal insulation separation heat shielding is made up of internal layer molybdenum sheet thermal insulation layer, intermediate course Zirconium oxide fibre carpet veneer and outer stainless steel metal layer.
Further, the top of described furnace shell is also provided with anti-explosion safety relief valve.
Further, described air inlet pipe is provided with gas flowmeter and the first stainless-steel vacuum ball valve.
Further, described escape pipe is provided with combustion controller and the second stainless-steel vacuum ball valve.
The utility model is the equipment combined with gas shield heating technique by high-temperature vacuum sintering technology, matches, devise two kinds of corresponding programs, and provide the translation function of atmosphere sintering and vacuum-sintering the control system of sintering furnace and technique.Can vacuum-sintering, also can be filled with protective gas heating again after forvacuum, and be in slight positive pressure state always and carry out protective atmosphere sintering.The protective gas that the volatile matter foreign gas that material in sintering process discharges is recycled flowing is taken away and is discharged out of the furnace, and therefore this equipment also has (fat) function of coming unstuck, and (binding agent) sintering that can be used for coming unstuck once completes.
The utility model has following beneficial effect: the dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part described in the utility model, first in furnace shell, molybdenum sheet calandria is provided with, different from the graphite grazing case that prior art adopts, this molybdenum sheet calandria is High-Purity Molybdenum material, namely vacuum-sintering is applicable to, also can be used for atmosphere sintering, under protective atmosphere, can high temperature sintering be realized; Secondly, unlike the prior art, this sintering furnace not only can sinter under vacuum mode, owing to adopting molybdenum sheet calandria in above-mentioned furnace shell, according to the characteristic of Mo, when sintering, inert gas can be used, also can use the atmosphere sintering of fuel gas simultaneously, thus be applicable to the metal powder injection molded part material that phosphorus content requirement is lower and material performance requirement is higher, solve problems of the prior art.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the longitudinal section view of Fig. 1.
Fig. 3 is control program block diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1 and Figure 2, the dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part, comprise the furnace shell 2 opened the door at two ends, the support frame of furnace body 1 supporting described furnace shell 2, this furnace shell 2 is cylinder, axially horizontally disposed, support frame of furnace body 1 plays the effect supporting whole body of heater, the side's of being provided with body thermal insulation separation heat shielding 3 in described furnace shell 2, wherein, this thermal insulation separation heat shielding 3 is by internal layer molybdenum sheet thermal insulation layer 13, intermediate course Zirconium oxide fibre carpet veneer 14 and outer stainless steel metal layer 15 adopt molybdenum bolt fixedly to step up, composition insulating, play insulation, heat insulation, improve thermal-radiating effect, three groups of calandrias 4 are provided with in described thermal insulation separation heat shielding 3, described calandria 4 is molybdenum sheet calandria, described calandria 4 is fixedly connected with described furnace shell 2 by product bracing frame 10, described calandria 4 is connected with molybdenum electrode 11, in the present embodiment, owing to have employed molybdenum sheet calandria, therefore according to the characteristic of Mo, when sintering, not only inert gas can be used, also the atmosphere sintering of fuel gas can be used, wherein, inert gas refers generally to nitrogen, argon gas etc., fuel gas refers generally to ammonolysis craft, hydrogen etc., above-mentioned process gas is applicable to the sintering that phosphorus content requires lower and that material performance requirement is higher metal powder injection molded part material, the top of described furnace shell 2 is provided with temperature thermocouple 12, and described temperature thermocouple 12 to be connected with described calandria 4 with thermal insulation separation heat shielding 3 through described furnace shell 2 successively, can be measured the actual temperature in stove by temperature thermocouple 12, air inlet pipe 7 communicates with thermal insulation separation heat shielding 3 through described furnace shell 2, protection gas directly can be delivered to furnace interior by this air inlet pipe 7, escape pipe 6 communicates with thermal insulation separation heat shielding 3 through described furnace shell 2, can protective gas be led to outside stove by outlet pipe by escape pipe 6, vavuum pump 8 is connected with described furnace shell 2 by pipeline, and starting vavuum pump 8 can be extracted out the gas in stove by vavuum pump 8.
As shown in Figure 1 and Figure 2, the top of described furnace shell 2 is also provided with anti-explosion safety relief valve 5, and this anti-explosion safety relief valve 5 is when protective atmosphere sintering superpressure, and safety relief, plays safeguard protection effect.
As shown in Figure 1 and Figure 2; described air inlet pipe 7 is provided with gas flowmeter 17 and the first stainless-steel vacuum ball valve 16; air inflow situation can be recorded by gas flowmeter 17, can control whether in stove, to carry protective gas by the first stainless-steel vacuum ball valve 16 simultaneously.
As shown in Figure 1 and Figure 2; described escape pipe 6 is provided with combustion controller 9 and the second stainless-steel vacuum ball valve 18; can control whether the protective gas in stove to be delivered to outside stove by outlet pipe by the second stainless-steel vacuum ball valve 18, adopt combustion controller 9 residual gas got rid of in stove can be burnt at exit naked light.
The control program of the utility model technological process: adopt 14 inches of person-computer union as the center of control system, by temperature controller, by information feed back such as power controller control signal, measured temperature, vacuum degree, charge flow rate, Stress control to control system center.Temperature controls to accept the temperature acquisition signal of stove thermocouple, after instrument PID arithmetic, controls the power output size of power of controlled silicon controller, makes stove heating power continous-stable, adjustable.Stress control during atmosphere sintering, adopts a Stress control instrument, accepts the input signal of stove pressure sensor, through the PID arithmetic of instrument itself, regulate pipeline valve opening size by port of export combustion controller, regulate furnace pressure, reach controlled pressure object.Checkout facility electrical apparatus control system, source of the gas, water source, establishment computer heating control flow process, when fuel gas atmosphere sintering, start vavuum pump 8, be evacuated to high vacuum in stove, close each valve of each pump, open air inlet pipeline, gas flowmeter 17 again, in stove, pass into fuel gas (reducibility gas), when reaching pressure-fired, open outlet pipe valve, outside emptying cleaning.Clean after ten minutes, ignition combustion controller 9, the fuel gas of discharging in burn off stove.Start heating power supply, run sintering process program, carry out fuel gas atmosphere sintering pattern.When inert gas atmosphere sinters, start vavuum pump 8, be evacuated to high vacuum in stove, close each valve of each pump, then open air inlet pipeline, gas flowmeter 17, in stove, pass into inert gas, when reaching pressure-fired, open outlet pipe valve, outside emptying cleaning.Clean after ten minutes, ignition combustion controller 9, the inert gas of discharging in burn off stove.Start heating power supply, run sintering process program, carry out fuel gas atmosphere sintering pattern.When vacuum-sintering pattern, close inlet, outlet pipe valve, open vavuum pump 8, run heating schedule, realize vacuum-sintering pattern, after having sintered, stop heating schedule, enter Temperature fall, when furnace temperature is down to room temperature, can come out of the stove.
In sum, this dual-purpose sintering furnace both can realize vacuum-sintering pattern, also can realize atmosphere sintering pattern, and atmosphere sintering pattern not only can use inert gas, also can use the atmosphere sintering of fuel gas, thus can require to realize vacuum-sintering and atmosphere sintering conversion use according to the sintering of material, not only improve utilization rate of equipment and installations, and sintering efficiency can be improved.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, other amendments that those of ordinary skill in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. the dual-purpose sintering furnace of the vacuum protection atmosphere of metal powder injection molded part, is characterized in that, comprises the furnace shell (2) opened the door at two ends, the support frame of furnace body (1) supporting described furnace shell (2); The side's of being provided with body thermal insulation separation heat shielding (3) in described furnace shell (2), three groups of calandrias (4) are provided with in described thermal insulation separation heat shielding (3), described calandria (4) is molybdenum sheet calandria, described calandria (4) is fixedly connected with described furnace shell (2) by product bracing frame (10), and described calandria (4) is connected with molybdenum electrode (11); The top of described furnace shell (2) is provided with temperature thermocouple (12), and described temperature thermocouple (12) is connected with described calandria (4) with thermal insulation separation heat shielding (3) through described furnace shell (2) successively; Air inlet pipe (7) communicates with thermal insulation separation heat shielding (3) through described furnace shell (2), and escape pipe (6) communicates with thermal insulation separation heat shielding (3) through described furnace shell (2), and vavuum pump (8) is connected with described furnace shell (2) by pipeline.
2. the dual-purpose sintering furnace of the vacuum protection atmosphere of metal powder injection molded part according to claim 1; it is characterized in that, described thermal insulation separation heat shielding (3) is made up of internal layer molybdenum sheet thermal insulation layer (13), intermediate course Zirconium oxide fibre carpet veneer (14) and outer stainless steel metal layer (15).
3. the dual-purpose sintering furnace of the vacuum protection atmosphere of metal powder injection molded part according to claim 1, it is characterized in that, the top of described furnace shell (2) is also provided with anti-explosion safety relief valve (5).
4. the dual-purpose sintering furnace of the vacuum protection atmosphere of metal powder injection molded part according to claim 1, it is characterized in that, described air inlet pipe (7) is provided with gas flowmeter (17) and the first stainless-steel vacuum ball valve (16).
5. the dual-purpose sintering furnace of the vacuum protection atmosphere of metal powder injection molded part according to claim 1, it is characterized in that, described escape pipe (6) is provided with combustion controller (9) and the second stainless-steel vacuum ball valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420298503.7U CN204159874U (en) | 2014-06-06 | 2014-06-06 | The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420298503.7U CN204159874U (en) | 2014-06-06 | 2014-06-06 | The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204159874U true CN204159874U (en) | 2015-02-18 |
Family
ID=52533602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420298503.7U Withdrawn - After Issue CN204159874U (en) | 2014-06-06 | 2014-06-06 | The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204159874U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978210A (en) * | 2014-06-06 | 2014-08-13 | 海安县鹰球粉末冶金有限公司 | Vacuum and protective atmosphere sintering furnace of metal powder injection molding part |
| CN105149586A (en) * | 2015-09-17 | 2015-12-16 | 苏州汇科机电设备有限公司 | Hearth heating device of MIM sintering furnace |
| CN107020376A (en) * | 2016-01-31 | 2017-08-08 | 湖南大学 | A kind of metal base grinding wheel atmosphere sintering device |
| WO2018214186A1 (en) * | 2017-05-24 | 2018-11-29 | 尤根牙科医疗科技（北京）有限公司 | Dual-purpose sintering furnace |
| CN110227819A (en) * | 2018-06-28 | 2019-09-13 | 安徽卓锐三维科技有限公司 | A kind of spliced 3D printing powder cylinder of band sealing and explosion prevention function |
| CN117091398A (en) * | 2023-10-17 | 2023-11-21 | 太原开元智能装备有限公司 | Tubular induction heating sintering furnace |
-
2014
- 2014-06-06 CN CN201420298503.7U patent/CN204159874U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978210A (en) * | 2014-06-06 | 2014-08-13 | 海安县鹰球粉末冶金有限公司 | Vacuum and protective atmosphere sintering furnace of metal powder injection molding part |
| CN103978210B (en) * | 2014-06-06 | 2016-04-13 | 海安县鹰球粉末冶金有限公司 | The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part |
| CN105149586A (en) * | 2015-09-17 | 2015-12-16 | 苏州汇科机电设备有限公司 | Hearth heating device of MIM sintering furnace |
| CN105149586B (en) * | 2015-09-17 | 2017-03-29 | 苏州汇科机电设备有限公司 | The burner hearth heater of MIM sintering furnaces |
| CN107020376A (en) * | 2016-01-31 | 2017-08-08 | 湖南大学 | A kind of metal base grinding wheel atmosphere sintering device |
| WO2018214186A1 (en) * | 2017-05-24 | 2018-11-29 | 尤根牙科医疗科技（北京）有限公司 | Dual-purpose sintering furnace |
| US11384982B2 (en) | 2017-05-24 | 2022-07-12 | Liaoning Upcera Co., Ltd. | Dual-purpose sintering furnace |
| CN110227819A (en) * | 2018-06-28 | 2019-09-13 | 安徽卓锐三维科技有限公司 | A kind of spliced 3D printing powder cylinder of band sealing and explosion prevention function |
| CN117091398A (en) * | 2023-10-17 | 2023-11-21 | 太原开元智能装备有限公司 | Tubular induction heating sintering furnace |
| CN117091398B (en) * | 2023-10-17 | 2024-01-19 | 太原开元智能装备有限公司 | Tubular induction heating sintering furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103978210B (en) | The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part | |
| CN204159874U (en) | The dual-purpose sintering furnace of vacuum protection atmosphere of metal powder injection molded part | |
| CN101655310B (en) | Protective atmosphere vacuum sintering furnace with high temperature of 1800 DEG C | |
| CN104596283B (en) | High-efficient and energy-saving aluminum rod mixing heating furnace | |
| CN201488530U (en) | Vacuum sintering furnace in 1,800 DEG C high-temperature protective atmosphere | |
| CN104916740A (en) | Annealing oxidation equipment | |
| CN100551832C (en) | A kind of preparation high temperature nuclear reactor fuel element UO 2The method of nuclear core | |
| CN208600592U (en) | A kind of punching press hardened steel plate heating device | |
| CN205482318U (en) | Hydrogen sintering stove heat energy cyclic utilization device | |
| CN101749935A (en) | Atmosphere-adjustable high-temperature haydite sintering device | |
| CN208282617U (en) | A kind of gas kiln for firing ceramics | |
| CN204874668U (en) | Energy -saving vertical annealing stove heating chamber | |
| CN103418781A (en) | Haul multi-modal steel ladle roasting furnace kiln | |
| CN208671664U (en) | A kind of box electric kiln may filter that furnace gas | |
| CN108203801A (en) | A kind of energy-saving roller mesh-belt furnace of Whole fiber | |
| CN203936371U (en) | Coal gas of converter heat accumulating type vacuum drying oven barbecue device | |
| CN202989213U (en) | Quick annealing furnace | |
| CN102002662B (en) | Bolt surface vapor oxidization blacking device | |
| CN205473907U (en) | Roll annealing device | |
| CN209726801U (en) | Energy saving kiln is used in a kind of production of ceramic tile | |
| CN205102589U (en) | Energy -concerving and environment -protective steel stove that pushes away of soft bao gaofeng of syllogic | |
| CN204154099U (en) | A kind of energy-conservation Muffle furnace | |
| CN105318719B (en) | Underbody formula roaster and application method | |
| CN211865716U (en) | Heat utilization device of sintering curing furnace | |
| CN102756448B (en) | Rotational molding machine thermojet heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150218 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |