CN203044898U - Continuous sintering furnace for metal injection molding - Google Patents
Continuous sintering furnace for metal injection molding Download PDFInfo
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- CN203044898U CN203044898U CN 201220636515 CN201220636515U CN203044898U CN 203044898 U CN203044898 U CN 203044898U CN 201220636515 CN201220636515 CN 201220636515 CN 201220636515 U CN201220636515 U CN 201220636515U CN 203044898 U CN203044898 U CN 203044898U
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- degreasing
- gas pipeline
- sintering furnace
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Abstract
The utility model discloses a continuous sintering furnace for metal injection molding. The continuous sintering furnace comprises a combined furnace body, wherein the furnace head of the furnace body is provided with a liftable furnace door and a feed port; the furnace tail is provided with a liftable furnace door and a discharge port; the furnace body is provided with a degreasing section, a sintering section, a slow cooling section and a cooling section from the furnace head to the furnace tail in sequence; the degreasing section is provided with at least one inert gas pipeline; a gas outlet of the inert gas pipeline is sectionally arranged in a degreasing section hearth; meanwhile, the degreasing section is provided with at least one carbon control gas pipeline; and a gas outlet of the carbon control gas pipeline is sectionally arranged in the degreasing section hearth. According to the continuous sintering furnace, the degreasing section is sectionally and additionally provided with the inert gas pipeline, the flow and the air flow direction can be adjusted in different temperature zones as required, and the problems of unreasonable sealing and air flow of the equipment can be effectively solved.
Description
Technical field
The utility model relates to PM technique, relates in particular to the sintering furnace of metal injection molded usefulness.
Background technology
Metal injection molded is a kind of brand-new parts process technology that is incorporated into field of powder metallurgy by Plastics Injection Molding Technology.Powder injection-molded can be as producing plastics, the parts that one-shot forming is very complicated.Powder injection-molded is small-sized complex parts moulding and a revolution of processing processing technology.
At present, metal powder injection molding producer all adopts traditional thermoplasticity bonding system (polyester paraffin, polyester oil, polyester compound etc.), polyformaldehyde system etc.The system difference, the degreasing process difference.At present, solvent degreasing and catalysis degreasing are just in penetration and promotion.The system difference, agglomerating plant is widely different.At present, popular is that agglomerating plant is vacuum sintering furnace (equipment).The continous way sintering furnace has obtained to use at present aspect the polyformaldehyde system, the Chinese utility model that as notification number is CN201311177 discloses a kind of sintering furnace on September 16th, 2009, it comprises body of heater, described body of heater is followed successively by degreasing section, sintering stage and cooling section from its import to outlet, this degreasing section, sintering stage and cooling section are that orthoscopic is arranged; The porch of degreasing section is provided with fire door, and the degreasing section is provided with fire door at least between sintering stage, and sintering stage is provided with fire door at least between cooling section, and the exit of cooling section is provided with fire door; Described degreasing section and sintering stage are provided with heater, and cooling section is provided with cooling device; Described degreasing section, sintering stage and cooling section are provided with transmission mechanism.It adopts linear type structure, and single operations such as degreasing in traditional MIM technology, sintering, cooling are integrated into comprehensive operation.
But the degreasing sintered equipment and technology of continous way is not mature enough, has a lot of problems.Existing cerul, plasticity system, continous way agglomerating plant subject matter are that the sealing of degreasing section equipment and air-flow air feed are unreasonable, the product lack of homogeneity.
The utility model content
Technical problem to be solved in the utility model just provides a kind of metal injection molded continous way sintering furnace, effectively solution equipment sealing, the irrational problem of air-flow.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of metal injection molded continous way sintering furnace, comprise a combined type body of heater, the burner of described body of heater is provided with liftable fire door and charging aperture, the stove tail is provided with liftable fire door and discharging opening, described body of heater is disposed with the degreasing section from burner to the stove tail, sintering stage, the slow cooling section, cooling section, it is characterized in that: described degreasing section is provided with at least one inert gas pipeline, the gas outlet segmentation of described inert gas pipeline is arranged in the degreasing section burner hearth, the section of degreasing simultaneously is provided with at least one control carbon gas pipeline, and the gas outlet segmentation of described control carbon gas pipeline is arranged in the degreasing section burner hearth.
As preferably, described inert gas pipeline enters burner hearth from degreasing section left end, and described control carbon gas pipeline enters burner hearth from degreasing section right-hand member, and described inert gas pipeline and control carbon gas pipeline are provided with flow control valve.
As preferably, described degreasing section is provided with at least two cooling passages that are communicated with flues and body of heater outer air, and this cooling passage is the adjustable passage that can close and regulate throughput.
As preferably, the control carbon gas in the described control carbon gas pipeline adopts decarburization atmosphere, and this decarburization atmosphere is H
2Perhaps H
2O or decomposed ammonia body or CO
2Perhaps O
2Also or the combination of above-mentioned gas.
As preferably, long-pending wax jar is set below the described degreasing section front end, described long-pending wax jar is provided with grafting wax mouth, inert gas entrance and exhaust-valve.
As preferably, described body of heater is provided with sample tap at the linkage section of degreasing section and sintering stage, and described sample tap adopts upper shed or side opening mode.
As preferably, described sintering furnace arranges the sintered dimensions image acquistion system at degreasing section, sintering stage.
As preferably, the heater of described degreasing section and sintering stage adopts silicon carbide heater, be equipped with a main temperature thermocouple and a tracking and temperature testing thermocouple on described degreasing section and the sintering stage, described main temperature thermocouple and tracking and temperature testing thermocouple are connected with switch board, and switch board is provided with one and follows the tracks of overtemperature alarm.
As preferably, described cooling section stage casing or back segment arrange liftable separation goalkeeper cooling section and separate, described cooling section is separated in front of the door at liftable, and side and rear side are respectively equipped with admission line, the described separation admission line of side in front of the door is used for carrying reducibility gas, and the described separation admission line of side behind the door is used for carrying inert gas.
As preferably, described slow cooling section arranges air-cooled jacket structured, and described air-cooled chuck inner chamber is dried by an air blast.
The utility model is set up the inert gas pipeline in the segmentation of degreasing section, and pipeline can carry out flow and airflow direction adjusting, effectively solution equipment sealing, the irrational problem of air-flow at different warm areas as required.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is degreasing section inert gas pipeline structural representation;
Fig. 3 is degreasing section cooling vent hole structure schematic diagram;
Fig. 4 is the long-pending wax jar structure schematic diagram of degreasing section;
Fig. 5 is the slow cooling section structural representation;
Fig. 6 is the cooling section structural representation;
Fig. 7 is cooling section admission line structural representation;
Fig. 8 is gas distribution pipe structural representation in the cooling section admission line;
Fig. 9 is the temperature alarming device structural representation;
Figure 10 is temperature alarming device control principle schematic diagram.
The specific embodiment
As shown in Figure 1, be metal injection molded continous way sintering furnace of the present utility model, it comprises a combined type body of heater, the burner of described body of heater is provided with the liftable fire door and charging aperture 6, stove tail are provided with liftable fire door and discharging opening 60, and described body of heater is disposed with degreasing section 1, sintering stage 2, slow cooling section 3, cooling section 4 from burner to the stove tail.Described furnace binding is meshbeltfurnace or stepping beam type continuous oven; When employing pushed away boat structure sintering furnace, material boat size and fire box temperature were the integral multiple relation.
Adopt external cycling mechanism between described charging aperture 6 and the discharging opening 60.This outer circulation mechanism adopts sprocket wheel, belt or gear drive to realize.
Described body of heater is provided with sample tap 150 at the linkage section 15 of degreasing section and sintering stage, and described sample tap adopts upper shed or side opening mode.This sample tap adopts mechanical pull bar or bolted mode to open or close sample tap.
As Fig. 2 to the concrete structure that Figure 4 shows that the degreasing section, described degreasing section is provided with at least one inert gas pipeline 11, the gas outlet segmentation of described inert gas pipeline is arranged in the degreasing section burner hearth 13, the section of degreasing simultaneously is provided with at least one control carbon gas pipeline 12, and the gas outlet segmentation of described control carbon gas pipeline is arranged in the degreasing section burner hearth 13.Inert gas pipeline 11 and control carbon gas pipeline 12 can arrange a row or multi-row gas outlet vertically.Inert gas pipeline 11 is provided with three among Fig. 2, is respectively the first inert gas pipeline 110, the second inert gas pipeline 111, the 3rd inert gas pipeline 112, and it stretches into the length difference of burner hearth 13 inside.Control carbon gas pipeline 12 also can adopt the structure identical with inert gas pipeline 11.The adjusting of control carbon gas flow direction can be undertaken by rotating control carbon gas pipeline 12, control carbon gas pipeline two ends are rotatably connected on the tuning movable joint, specifically can adopt thread connection, control carbon gas pipeline is provided with handle, turning handle, then the gas outlet direction is rotated with control carbon gas pipeline 12 and is changed, certainly, for the adjusting of the gas outlet direction that realizes inert gas pipeline 11, it also can adopt tuning movable joint structure.
Described degreasing section is provided with at least two cooling passages 131 that are communicated with flue and body of heater outer air, and this cooling passage is for closing and regulate the adjustable passage of throughput.This cooling passage 131 passes heat-insulation layer 130 and is communicated with degreasing section flue.Passage 131 adopts the natural ventilation mode.When needs are regulated zone temperatures, can realize that can cover opening with a rotating baffle plate, flap shutter can be regulated openings of sizes by the openings of sizes of opening this section upper shed.
Control carbon gas in the described control carbon gas pipeline adopts decarburization atmosphere, and this decarburization atmosphere is H
2Perhaps H
2O or decomposed ammonia body or CO
2Perhaps O
2Also or the combination of above-mentioned gas.
Described degreasing section front end below arranges long-pending wax jar 14, and described long-pending wax jar is provided with grafting wax mouth 140, inert gas entrance 141 and exhaust-valve 142.
Be illustrated in figure 5 as the concrete structure of slow cooling section, described slow cooling section 3 arranges air-cooled jacket structured, be about to the slow cooling section and be set to the jacket pipe structure, outer tube sleeve on inner pipe, have certain space to form air-cooled chuck inner chamber 30 between outer tube and the interior pipe, described air-cooled chuck inner chamber 30 is inwardly dried by an air blast 31.
As Fig. 6 to Figure 8 shows that the cooling section concrete structure, described cooling section arranges a liftable and divides partition door 40 that cooling section is separated, described cooling section is separated in front of the door at liftable, and side and rear side are respectively equipped with admission line 41, the described separation admission line of side in front of the door is used for carrying reducibility gas, and the described separation admission line of side behind the door is used for carrying inert gas.
Wherein, described admission line 41 comprises that one extends transversely into the gas distribution pipe 411 of cooling section, and these gas distribution pipe two ends are slip-knot 413, and gas distribution pipe is provided with several gas outlets 412.Slip-knot and gas distribution pipe adopt spiral marking connection, when needs are adjusted airflow direction, realize by rotating the gas distribution pipe angle.
As Fig. 9 and shown in Figure 10, be that example describes with the temperature alarming device on the degreasing section, degreasing section burner hearth 13 outer heat-insulation layers 130 are provided with a main temperature thermocouple 51 and a tracking and temperature testing thermocouple 50, described main temperature thermocouple and tracking and temperature testing thermocouple are connected with switch board 5, and switch board is provided with one and follows the tracks of overtemperature alarm 52.Switch board 5 internal controller judge whether overtemperature according to the data that main temperature thermocouple 51 and a tracking and temperature testing thermocouple 50 record, if overtemperature, then control is followed the tracks of overtemperature alarm 52 and reported to the police.
Temperature alarming device on the sintering stage is identical with temperature alarming device structure on the above-mentioned degreasing section.
In addition, the heater of described degreasing section and sintering stage adopts silicon carbide heater, and described sintering furnace arranges the sintered dimensions image acquistion system at degreasing section, sintering stage.This system has the photoelectricity coupling mechanism, has optical system, signal processing system, sintering shrinkage curve setting program and pushes away compositions such as boat time set program.
The slow cooling section is provided with protective gas admission line 32, and as the usefulness that feeds sintering gas shield gas, the slow cooling section arranges thermocouple temperature measuring apparatus, is used for the temperature of monitoring slow cooling section, is convenient in time adjust cooling velocity, reduces the product distortion.
The beneficial effects of the utility model are:
1, set up the inert gas pipeline in the segmentation of degreasing section, pipeline can carry out flow and airflow direction adjusting at different warm areas as required;
2, for avoiding the uniformity in airflow influence temperature field, establish the cooling passage in the degreasing section flue outside, avoid the burner hearth internal temperature uncontrollable;
3, in the degreasing section control carbon gas pipeline is set, control carbon gas can be adjusted at different sections as required, and airflow direction was adjustable after control carbon gas entered burner hearth inside;
4, control carbon gas adopts decarburization atmosphere, and these atmosphere comprise H
2, H
2O, decomposed ammonia body, CO
2, O
2And their combination, to adapt to control carbon needs.Contain O
2The control of mist gas ratio is in non-explosive range.
5, for guaranteeing that size is even, adopt meshbeltfurnace, stepping beam type continuous oven; When pushing away boat structure sintering furnace, material boat size and fire box temperature are the integral multiple relation.
6, (sintering stage and cooling section) air inlet arranges the temperature control means in the slow cooling section, and the control cooling velocity reduces the product distortion;
7, at cooling section the branch partition door is set, separates section configuration reducibility gas pipeline in front of the door, the current potential during with the cooling of assurance product;
8, for guaranteeing to separate sneaking into of oxidizing gas when door opened, the inert gas seal measure is set separating the fire door back segment, enter separation section and oxidation when causing the product cooling in front of the door to avoid oxidizing atmosphere.
9, cause product distortion for the temperature field of avoiding product degreasing and sintering process is inhomogeneous, preferred high-quality temperature control measure are in control accuracy of temperature section temperature difference ± 5 ℃.These measures comprise that high-quality carborundum heater, symmetrically arranged TEMP detect the tracking measure;
10, be effectively to realize the sintering process controllable size at degreasing section, sintering stage the sintered dimensions image acquistion system being set, from motion tracking product sintered dimensions situation of change, to adjust degreasing, sintering process system;
11, for avoiding burner to amass wax, long-pending wax tank body is set under burner; On the long-pending wax tank body inert gas pipeline is set, does not need the blowing out operation to guarantee the de-waxing process, nonoxidizing gas destroys system balancing;
12, be implementation procedure production continuity, adopt external cycling mechanism, guarantee the continuous circular flow of system.
13, at the follow-up sample tap that arranges of degreasing section, be convenient to sample analysis skimming processes situation and adjust.
The utility model is applicable to the degreasing sintered continuously of cerul, plasticity system, and sintering process can realize that carbon is controlled, controlled, the Controllable Temperature of atmosphere, and controllable product size, product precision height can match in excellence or beauty with the vacuum drying oven sintered products.
Claims (10)
1. metal injection molded continous way sintering furnace, comprise a combined type body of heater, the burner of described body of heater is provided with liftable fire door and charging aperture (6), the stove tail is provided with liftable fire door and discharging opening (60), it is characterized in that: described body of heater is disposed with degreasing section (1) from burner to the stove tail, sintering stage (2), slow cooling section (3), cooling section (4), described degreasing section is provided with at least one inert gas pipeline (11), the gas outlet segmentation of described inert gas pipeline is arranged in the degreasing section burner hearth (13), the section of degreasing simultaneously is provided with at least one control carbon gas pipeline (12), and the gas outlet segmentation of described control carbon gas pipeline is arranged in the degreasing section burner hearth (13).
2. continous way sintering furnace according to claim 1, it is characterized in that: described inert gas pipeline enters burner hearth from degreasing section left end, described control carbon gas pipeline enters burner hearth from degreasing section right-hand member, and described inert gas pipeline and control carbon gas pipeline are provided with flow control valve.
3. continous way sintering furnace according to claim 1 is characterized in that: described degreasing section is provided with at least two cooling passages (131) that are communicated with flues and body of heater outer air, and this cooling passage is the adjustable passage that can close and regulate throughput.
4. continous way sintering furnace according to claim 1 is characterized in that: the control carbon gas employing decarburization atmosphere in the described control carbon gas pipeline.
5. continous way sintering furnace according to claim 1 is characterized in that: described degreasing section front end below arranges long-pending wax jar (14), and described long-pending wax jar is provided with grafting wax mouth (140), inert gas entrance (141) and exhaust-valve (142).
6. continous way sintering furnace according to claim 1, it is characterized in that: described body of heater is provided with sample tap (150) at the linkage section (15) of degreasing section and sintering stage, and described sample tap adopts upper shed or side opening mode.
7. continous way sintering furnace according to claim 1, it is characterized in that: described sintering furnace arranges the sintered dimensions image acquistion system at degreasing section, sintering stage.
8. continous way sintering furnace according to claim 1, it is characterized in that: the heater of described degreasing section and sintering stage adopts silicon carbide heater, be equipped with a main temperature thermocouple (51) and a tracking and temperature testing thermocouple (50) on described degreasing section and the sintering stage, described main temperature thermocouple and tracking and temperature testing thermocouple are connected with switch board (5), and switch board is provided with one and follows the tracks of overtemperature alarm (52).
9. continous way sintering furnace according to claim 1, it is characterized in that: described cooling section stage casing or back segment arrange a liftable and divide partition door (40) that cooling section is separated, described cooling section is separated in front of the door at liftable, and side and rear side are respectively equipped with admission line (41), the described separation admission line of side in front of the door is used for carrying reducibility gas, and the described separation admission line of side behind the door is used for carrying inert gas.
10. continous way sintering furnace according to claim 1, it is characterized in that: described slow cooling section (3) arrange air-cooled jacket structured, and described air-cooled chuck inner chamber (30) is dried by an air blast (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636515 CN203044898U (en) | 2012-11-27 | 2012-11-27 | Continuous sintering furnace for metal injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636515 CN203044898U (en) | 2012-11-27 | 2012-11-27 | Continuous sintering furnace for metal injection molding |
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|---|---|
| CN203044898U true CN203044898U (en) | 2013-07-10 |
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|---|---|---|---|
| CN 201220636515 Expired - Fee Related CN203044898U (en) | 2012-11-27 | 2012-11-27 | Continuous sintering furnace for metal injection molding |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962461A (en) * | 2012-11-27 | 2013-03-13 | 浙江一火科技有限公司 | Metal injection molded continuous sintering furnace |
| CN105331780A (en) * | 2015-11-20 | 2016-02-17 | 江苏丰东热技术股份有限公司 | Low-temperature protection atmosphere type degreasing annealing furnace |
| CN106077658A (en) * | 2016-07-21 | 2016-11-09 | 广东风华高新科技股份有限公司 | Continuous way debinding furnace and use the method that this continuous way debinding furnace carries out defat |
| CN106270505A (en) * | 2015-06-12 | 2017-01-04 | 成都锦粼科技有限公司 | A kind of cooling processing method of powder metallurgical sintering process |
| CN107107197A (en) * | 2015-01-08 | 2017-08-29 | 林德股份公司 | Control the apparatus and method of sintering process |
| CN112857031A (en) * | 2020-12-31 | 2021-05-28 | 崇义章源钨业股份有限公司 | Oxidation reduction furnace |
-
2012
- 2012-11-27 CN CN 201220636515 patent/CN203044898U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962461A (en) * | 2012-11-27 | 2013-03-13 | 浙江一火科技有限公司 | Metal injection molded continuous sintering furnace |
| CN102962461B (en) * | 2012-11-27 | 2014-10-08 | 浙江一火科技有限公司 | Metal injection molded continuous sintering furnace |
| CN107107197A (en) * | 2015-01-08 | 2017-08-29 | 林德股份公司 | Control the apparatus and method of sintering process |
| CN106270505A (en) * | 2015-06-12 | 2017-01-04 | 成都锦粼科技有限公司 | A kind of cooling processing method of powder metallurgical sintering process |
| CN105331780A (en) * | 2015-11-20 | 2016-02-17 | 江苏丰东热技术股份有限公司 | Low-temperature protection atmosphere type degreasing annealing furnace |
| CN105331780B (en) * | 2015-11-20 | 2017-08-29 | 江苏丰东热技术股份有限公司 | Low-temperature protection atmosphere degreasing annealing furnace |
| CN106077658A (en) * | 2016-07-21 | 2016-11-09 | 广东风华高新科技股份有限公司 | Continuous way debinding furnace and use the method that this continuous way debinding furnace carries out defat |
| CN106077658B (en) * | 2016-07-21 | 2019-01-18 | 广东风华高新科技股份有限公司 | Continous way debinding furnace and the method that degreasing is carried out using the continous way debinding furnace |
| CN112857031A (en) * | 2020-12-31 | 2021-05-28 | 崇义章源钨业股份有限公司 | Oxidation reduction furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone Patentee after: ZHEJIANG YIHUO TECHNOLOGY CO.,LTD. Address before: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone Patentee before: ZHEJIANG YIHUO TECH CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20211127 |