CN203061881U - Novel vacuum furnace and dewaxing sintering unit - Google Patents
Novel vacuum furnace and dewaxing sintering unit Download PDFInfo
- Publication number
- CN203061881U CN203061881U CN 201320021819 CN201320021819U CN203061881U CN 203061881 U CN203061881 U CN 203061881U CN 201320021819 CN201320021819 CN 201320021819 CN 201320021819 U CN201320021819 U CN 201320021819U CN 203061881 U CN203061881 U CN 203061881U
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- graphite
- box
- flaggy
- novel evacuated
- inner bag
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- 238000005245 sintering Methods 0.000 title claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 91
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 91
- 239000010439 graphite Substances 0.000 claims abstract description 91
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 description 19
- 239000007789 gas Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a novel vacuum furnace and a dewaxing sintering unit. The novel vacuum furnace comprises a furnace body, a heating inner liner and a graphite box, wherein the heating inner liner is installed inside the furnace body, the graphite box is installed inside the heating inner liner, and the graphite box comprises a box body and graphite plate layers; the graphite plate layers are installed inside the box body and are at least five in number; and each graphite plate layer is placed along the horizontal plane, and the at least five graphite plate layers are evenly distributed in the vertical direction. By means of the structure, gaps are formed in the front of and at the back of the graphite box, uniformity of the front, back, upper, lower, left and right temperatures inside the furnace inner liner and uniformity of the ambience inside the furnace inner liner are improved, and the phenomena that sizes and performance of sintered products are inconsistent is reduced.
Description
Technical field
The utility model relates to the power metallurgy equipment field, is specifically related to novel evacuated stove and dewaxing and sintering equipment.
Background technology
Existing metal injection molded powder metallurgical technique generally comprises: batch mixing-injection moulding-dewaxing-sintering-post processing.Sintering can make the fine and close goods with certain tissue and respective performances that become of blank dewaxing, the contraction of porous, sintering process has very big even decisive influence to metallographic structure and the performance of end article, and the dewaxing technique before the sintering is one important procedure that guarantees sintering quality.
After the operation that dewaxes specially together, the binding agent that also has fraction in the goods, removing with sintering circuit of this a fraction of binding agent takes place in same vacuum drying oven, the original inner bag of vacuum drying oven has only carbon felt (carbon fiber) and the fixing graphite cake of using of carbon felt at present, when filling with substance has only a graphite bolster plate, put potsherd with graphite boat and put sintered products, one deck 4 dish graphite boats, each is self-enclosed, temperature up and down and in each graphite boat before and after causing in the furnace internal-lining, atmosphere are inhomogeneous, and product size and performance that sintering goes out differ.
The utility model content
The purpose of this utility model is to disclose novel evacuated stove and dewaxing and sintering equipment, has alleviated temperature in the vacuum drying oven furnace internal-lining, atmosphere is inhomogeneous, the problem that the product size that sintering goes out and performance differ.
For achieving the above object, the utility model adopts following technical scheme:
Novel evacuated stove comprises body of heater, is located at the heating inner bag in this body of heater and is located at graphite box in this heating inner bag that this graphite box comprises box body and graphite flaggy; The graphite flaggy is located in this box body, and the quantity of graphite flaggy is at least five; Each graphite flaggy is placed along horizontal plane, and these at least five graphite flaggies evenly distribute along vertical direction.
Further, described graphite flaggy is made of at least two graphite cakes.
Further, described box body and described graphite flaggy flexibly connect.
Further, described box body comprises graphite box sidewall, and it is protruding that graphite box inside surface of side wall is provided with equally distributed card, and the graphite flaggy is by the protruding and graphite box sidewall activity clamping of this card.
Further, described graphite box and described heating inner bag flexibly connect.
Further, the outer surface of described box body is provided with graphite box trip, the inner bag buckle that the inwall of described heating inner bag is provided with and this graphite box trip cooperates.
Further, the spacing H1 between described graphite box internal height H and the adjacent described graphite flaggy satisfies H more than or equal to 10 times H1.
The bottom of the inner bag of heating further, is provided with for the wax discharging port that connects the dewaxing guiding tube.
Further, the quantity of described graphite flaggy is 16.
The invention also discloses dewaxing and sintering equipment, comprise above-mentioned any described novel evacuated stove.
Compared with prior art, the beneficial effects of the utility model:
1, the utility model adopts the structure of multilayer graphite flaggy, the space is all arranged before and after in the graphite box, in the furnace internal-lining before and after up and down temperature, atmosphere evenness improve, alleviate the phenomenon that sintered products size and performance differ;
2, box body and graphite flaggy flexible connection, graphite box and the flexible connection of heating inner bag make and maintain, keep in repair, change conveniently, only need get final product by replacing graphite box;
3, spacing H1 satisfies H more than or equal to 10 times H1, and making has enough spaces that holds product to be sintered between each graphite flaggy.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparent, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of novel evacuated stove embodiment one in the utility model;
Fig. 2 is the schematic diagram of graphite box among Fig. 1;
Fig. 3 is that the master of graphite flaggy among Fig. 2 looks schematic diagram;
Fig. 4 is the schematic top plan view of Fig. 2;
Fig. 5 is the schematic diagram of dewaxing and sintering equipment in the utility model;
Among the figure, the 1-vacuum drying oven; The 101-body of heater; 102-heats inner bag; The 103-wax discharging port; 2-graphite box; The 21-box body; 22-graphite flaggy; The 23-card is protruding; The 3-gas tube; 31-first end; 32-second end; The 33-gas-charging connection; 4-slide machine pump; The 5-lobe pump; 6-first sintered pipes; 7-first valve; 8-second sintered pipes; 9-second valve; 10-the 3rd valve; The 11-guiding tube that dewaxes; The 12-pipe that dewaxes; 13-the 4th valve; 14-the 5th valve.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.
Novel evacuated stove comprises body of heater, is located at the heating inner bag in this body of heater and is located at graphite box in this heating inner bag that this graphite box comprises box body and graphite flaggy; The graphite flaggy is located in this box body, and the quantity of graphite flaggy is at least five; Each graphite flaggy is placed along horizontal plane, and these at least five graphite flaggies evenly distribute along vertical direction.
Embodiment one
Novel evacuated stove 1 shown in Fig. 1 to Fig. 4 embodiment one comprises body of heater 101, is located at the heating inner bag 102 in this body of heater 101 and is located at graphite box 2 in this heating inner bag 102 that this graphite box 2 comprises box body 21 and is used for putting the graphite flaggy 22 of need sintered products; Graphite flaggy 22 is located in this box body 21, and the quantity of graphite flaggy 22 is at least five; Each graphite flaggy 22 is placed along horizontal plane, and these at least five graphite flaggies 22 evenly distribute along the vertical direction X-axis.
Spacing H1 between graphite box internal height H and the adjacent graphite flaggy 22 satisfies H more than or equal to 10 times H1.
The bottom of heating inner bag 102 is provided with for the wax discharging port 103 that connects dewaxing guiding tube 11.
Among the embodiment one, the quantity of graphite flaggy 22 is 16.
Other structure of embodiment one novel evacuated stove is referring to prior art.
Embodiment two
Dewaxing and sintering equipment shown in Fig. 5 embodiment two comprises embodiment one described novel evacuated stove 1, also comprises for the gas tube 3 to graphite box 2 delivered inside gases; First end 31 of gas tube 3 is located at outside the vacuum drying oven and second end 32 inserts in the heating inner bags 102.Gas is high pure nitrogen or argon gas (concentration is more than or equal to 99.99%).First end 31 is provided with for the gas-charging connection 33 that connects nitrogen gas tank or argon gas gas tank.
Embodiment two also comprises slide machine pump 4, lobe pump 5, first sintered pipes 6 and first valve 7; First sintered pipes, 6 one ends are connected with vacuum drying oven 1, and the other end of first sintered pipes 6 is connected with slide machine pump 4.Lobe pump 5 is located on first sintered pipes 6, and between sintering exhaust outlet 3 and slide machine pump 4.First valve 7 is located on first sintered pipes 6, and between lobe pump 5 and sintering exhaust outlet 3, first valve 7 is used for connection or the closure of control first sintered pipes 6.Above structure has realized the extraction of vacuum furnace gas.
When vacuum drying oven 1 needed higher vacuum, first valve 7 was opened, and slide machine pump 4 and lobe pump 5 are worked simultaneously, and air-flow is discharged along first sintered pipes 6 in the vacuum drying oven 1; When vacuum drying oven 1 needed lower vacuum, first valve 7 was opened, and only needed 4 work of slide machine pump, and air-flow is discharged along first sintered pipes 6 in the vacuum drying oven.Adopt the structure of slide machine pump 4 and lobe pump 5 series connection, efficent use of resources has reduced production cost.
Among the embodiment two, when having only 4 work of slide machine pump, the flowing velocity of air-flow in first sintered pipes 6 is slower, when low pressure (atmosphere sintering) is descended high temperature sintering, lobe pump 5 can not start, and air-flow must be by lobe pump 5, and this moment, air-flow was discharged and lobe pump 5 itself can cause harmful effect, influenced the service life of lobe pump 5.As the further improvement to embodiment two, embodiment two comprises that also pipe range with second sintered pipes, 8, the second sintered pipes 8 of lobe pump 5 parallel connections is less than first sintered pipes 6; Slide machine pump 4 directly is connected by second sintered pipes 8 with sintering exhaust outlet 3.One end of second sintered pipes 8 connects vacuum drying oven 1, the second sintered pipes 8 by second valve 9 the other end connects slide machine pump 4 by the 3rd valve 10.Simultaneously, an end of first sintered pipes 6 connects the other end of sintering exhaust outlet 3, the first sintered pipes 6 by the 3rd valve 10 connection slide machine pumps 4 by first valve 7.When having only 4 work of slide machine pump, second valve 9 and the 3rd valve 10 are opened, first valve, 7 closures, and 1 air-flow is discharged to outside the vacuum drying oven 1 by second valve 9, the 3rd valve 10 and slide machine pump 4 successively along second sintered pipes 8 in the vacuum drying oven.Because air-flow is without lobe pump 5, directly second sintered pipes 8 through increasing avoids polluting first sintered pipes 6 and lobe pump 5 generation harmful effects to slide machine pump 4, prolongs the service life of lobe pump 5.
As the further improvement again to present embodiment, embodiment two also comprises dewaxing guiding tube 11 and dewaxing pipe 12.Dewaxing guiding tube 11 is located at vacuum drying oven 1 bottom and is communicated with heating inner bag 102; Dewaxing pipe 12 1 ends connect dewaxing guiding tube 11 by the 4th valve 13, and dewaxing pipe 12 other ends connect second sintered pipes 8; This moment, second sintered pipes 8 was provided with the 5th valve 14 between second valve 9 and the 3rd valve 10, and the link position of dewaxing pipe 12 and second sintered pipes 8 is located between second valve 9 and the 5th valve 14.The operation principle of present embodiment this moment of explanation now:
A, when vacuum drying oven 1 needs higher vacuum to carry out sintering, slide machine pump 4 and lobe pump 5 are worked simultaneously, first valve 7 and the 3rd valve 10 are opened second valve 9, the 4th valve 13 and the 5th valve 14 closures; Sintering air-flow in the vacuum drying oven 1 is discharged through first valve 7, lobe pump 5, the 3rd valve 10 and slide machine pump 4 successively along first sintered pipes 6 at this moment.
B, when vacuum drying oven 1 needs lower vacuum to carry out sintering (low pressure, atmosphere sintering), only need 4 work of a slide machine pump, lobe pump 5 is in resting state, first valve 7 is closed, and second valve 9, the 3rd valve 10 and the 5th valve 14 are opened, and the 4th valve 13 is closed; Sintering air-flow in the vacuum drying oven 1 is discharged through oversintering exhaust outlet 3, second valve 9, the 5th valve 14, the 3rd valve 10 and slide machine pump 4 successively at this moment.
C, when vacuum drying oven carries out (low temperature) carrier when dewaxing arranged, the wax steam in the heating inner bag 101 is discharged in the collection wax jar with the air-flow through dewaxing guiding tube 11, the 4th valve 13, dewaxing pipe the 12, the 5th valve 14, the 3rd valve 10 and slide machine pump 4 successively.
Dewaxing tracheae structure in the utility model, the energy efficent use of resources has reduced production cost, and when slide machine pump 4 works independently, wax steam avoids wax steam to pollute lobe pump 5 because of condensation without lobe pump 5 but directly to slide machine pump 4, prolongs the service life of lobe pump 5.
In the present embodiment, the pipeline that first sintered pipes 6, second sintered pipes 8, dewaxing guiding tube 11 and dewaxing pipe 12 are made for stainless steel; The internal diameter of second sintered pipes 8, dewaxing guiding tube 11 and dewaxing pipe 12 further prevents wax steam cooling blocking pipe all greater than 80mm; The outer wall of dewaxing guiding tube 11 and/or dewaxing pipe 12 is arranged with the muff (not shown), prevents wax steam cooling blocking pipe.
Other structure of embodiment two dewaxing and sintering equipment is referring to prior art.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or modification are not broken away from spirit and scope of the present utility model, if these are changed and modification belongs within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and modification.
Claims (10)
1. novel evacuated stove is characterized in that: comprise body of heater, be located at the heating inner bag in this body of heater and be located at graphite box in this heating inner bag, this graphite box comprises box body and graphite flaggy; The graphite flaggy is located in this box body, and the quantity of graphite flaggy is at least five; Each graphite flaggy is placed along horizontal plane, and these at least five graphite flaggies evenly distribute along vertical direction.
2. novel evacuated stove according to claim 1, it is characterized in that: described graphite flaggy is made of at least two graphite cakes.
3. novel evacuated stove according to claim 1, it is characterized in that: described box body and described graphite flaggy flexibly connect.
4. as novel evacuated stove as described in the claim 3, it is characterized in that: described box body comprises graphite box sidewall, and it is protruding that graphite box inside surface of side wall is provided with equally distributed card, and the graphite flaggy is by the protruding and graphite box sidewall activity clamping of this card.
5. novel evacuated stove according to claim 1, it is characterized in that: described graphite box and described heating inner bag flexibly connect.
6. as novel evacuated stove as described in the claim 5, it is characterized in that: the outer surface of described box body is provided with graphite box trip, the inner bag buckle that the inwall of described heating inner bag is provided with and this graphite box trip cooperates.
7. novel evacuated stove according to claim 1 is characterized in that: the spacing H1 between described graphite box internal height H and the adjacent described graphite flaggy satisfies H more than or equal to 10 times H1.
8. novel evacuated stove according to claim 1 is characterized in that: shown in the bottom of heating inner bag be provided with for the wax discharging port that connects the dewaxing guiding tube.
9. novel evacuated stove according to claim 1, it is characterized in that: the quantity of described graphite flaggy is 16.
10. dewaxing and sintering equipment is characterized in that: comprise above-mentioned any described novel evacuated stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021819 CN203061881U (en) | 2013-01-16 | 2013-01-16 | Novel vacuum furnace and dewaxing sintering unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021819 CN203061881U (en) | 2013-01-16 | 2013-01-16 | Novel vacuum furnace and dewaxing sintering unit |
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| Publication Number | Publication Date |
|---|---|
| CN203061881U true CN203061881U (en) | 2013-07-17 |
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| CN 201320021819 Expired - Lifetime CN203061881U (en) | 2013-01-16 | 2013-01-16 | Novel vacuum furnace and dewaxing sintering unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480842A (en) * | 2013-09-10 | 2014-01-01 | 苏州米莫金属科技有限公司 | Metal-powder vacuum sintering furnace capable of comprehensively increasing paraffin recovery rate |
| CN110579102A (en) * | 2019-08-13 | 2019-12-17 | 山东德艾普节能材料有限公司 | ultra-high temperature sintering furnace and sintering method for oxide fiber product |
| WO2020034396A1 (en) * | 2018-08-15 | 2020-02-20 | 宁波恒普真空技术有限公司 | Graphite sheet isolation device |
| CN111283189A (en) * | 2020-03-26 | 2020-06-16 | 宁波恒普真空技术有限公司 | Vacuum degreasing sintering furnace with double internal pumping down pipelines |
-
2013
- 2013-01-16 CN CN 201320021819 patent/CN203061881U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480842A (en) * | 2013-09-10 | 2014-01-01 | 苏州米莫金属科技有限公司 | Metal-powder vacuum sintering furnace capable of comprehensively increasing paraffin recovery rate |
| WO2020034396A1 (en) * | 2018-08-15 | 2020-02-20 | 宁波恒普真空技术有限公司 | Graphite sheet isolation device |
| CN110579102A (en) * | 2019-08-13 | 2019-12-17 | 山东德艾普节能材料有限公司 | ultra-high temperature sintering furnace and sintering method for oxide fiber product |
| CN111283189A (en) * | 2020-03-26 | 2020-06-16 | 宁波恒普真空技术有限公司 | Vacuum degreasing sintering furnace with double internal pumping down pipelines |
| 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 |
| CN111283189B (en) * | 2020-03-26 | 2024-11-26 | 宁波恒普技术股份有限公司 | A vacuum degreasing sintering furnace with double inner pumping pipes |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
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| CX01 | Expiry of patent term |