CN110494237A - Vacuum degreasing fritting furnace - Google Patents
Vacuum degreasing fritting furnace Download PDFInfo
- Publication number
- CN110494237A CN110494237A CN201880021076.9A CN201880021076A CN110494237A CN 110494237 A CN110494237 A CN 110494237A CN 201880021076 A CN201880021076 A CN 201880021076A CN 110494237 A CN110494237 A CN 110494237A
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- Prior art keywords
- path portion
- furnace
- vacuum degreasing
- degreasing fritting
- furnace body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Furnace Details (AREA)
- Powder Metallurgy (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
Vacuum degreasing fritting furnace carries out wrapping the resiniferous ungrease treatment for being sintered body and firing processing, wherein the vacuum degreasing fritting furnace includes furnace body；Room is heated, the inside of the furnace body is configured at, the body that is sintered is heated；The internal atmosphere of the heating room is discharged to the outside of the furnace body by discharge path portion；And recoverer, recycling by the ungrease treatment from it is described be sintered body be discharged resin.The discharge path portion includes main path portion, connects the heating room and the recoverer；And individual path portion, it is connected in the inside of the furnace body from the main road path portion Zhi Eryu outlet.
Description
Technical field
The present invention relates to vacuum degreasing fritting furnaces.
Background technique
For example, as described in Patent Document 1 below, proposing the vacuum for carrying out ungrease treatment and sintering processes in a furnace
Degreasing sintered furnace.The vacuum degreasing fritting furnace includes heating room, is sintered body by heating to carry out ungrease treatment or sintering
Processing；And discharge pipe, the internal atmosphere of discharge heating room.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 6-41610 bulletin
Summary of the invention
Subject to be solved by the invention
But in sintering processes, the exhaust flowed in discharge pipe is in very high temperature.If the exhaust of high temperature exists
It is contacted when ungrease treatment with the resin being attached in discharge pipe, then can generate decomposition gas.Exist as a result, because decomposing back flow of gas
It is indoor to heating and the material in sintering processes is made to be carbonized such problems.
The present invention be it is completed to solve the above problems, its purpose is to provide carry out ungrease treatment in a furnace
With the vacuum degreasing fritting furnace that can prevent from being sintered body carbonization in the case where sintering processes.
Means for solving the problems
The vacuum degreasing fritting furnace of one embodiment of the illustration of the application, which wrap, resiniferous is sintered the de- of body
Rouge processing and firing processing, wherein the vacuum degreasing fritting furnace includes furnace body；Room is heated, the interior of the furnace body is configured at
The body that is sintered is heated in side；The internal atmosphere of the heating room is discharged to the furnace body by discharge path portion
Outside；And recoverer, recycling by the ungrease treatment from it is described be sintered body be discharged resin.The discharge path
Portion includes main path portion, connects the heating room and the recoverer；And individual path portion, in the furnace body
Side is connected from the main road path portion Zhi Eryu outlet.
Invention effect
According to the present invention, it can be prevented offer in the case where carrying out ungrease treatment and sintering processes even if in a furnace
It is sintered the vacuum degreasing fritting furnace of body carbonization.
Detailed description of the invention
Fig. 1 is the cross-sectional view for showing the outline structure of vacuum degreasing fritting furnace of first embodiment.
Fig. 2 is the cross-sectional view for showing the major part structure in discharge path portion.
Fig. 3 is the cross-sectional view for showing the outline structure of vacuum degreasing fritting furnace of second embodiment.
Specific embodiment
Hereinafter, being illustrated referring to an embodiment of the attached drawing to vacuum degreasing fritting furnace of the invention.This embodiment party
The vacuum degreasing fritting furnace of formula can continuously carry out the ungrease treatment for being sintered body and firing processing in a furnace body.
In addition, the scope of the present invention is not limited to the following embodiments and the accompanying drawings, within the scope of the technical idea of the present invention
It can arbitrarily change.In addition, in the following figures, for easy understanding each structure, make sometimes each construction scale bar and
Quantity etc. is different from the scale bar of actual configuration and quantity etc..
(first embodiment)
Fig. 1 is the cross-sectional view for showing the outline structure of vacuum degreasing fritting furnace 1 of present embodiment.As shown in Figure 1, this reality
The vacuum degreasing fritting furnace 1 for applying mode has furnace body 2, heating room 3, recoverer 4 and discharge path portion 5.Furnace body 2 has main body
Portion 2a and can be relative to the door portion 2b that main part 2a is opened and closed.Furnace body 2 is in the inside formed by door portion 2b and main part 2a
Space (in furnace) S in storage heating room 3.In addition, main part 2a and door portion 2b are by cooling body (not shown) in furnace body 2
It is cooled down.The temperature for the space S that furnace body 2 is in high temperature due to make the heat because heating room 3 as a result, is not delivered to the surface of furnace body 2
Side.
Heating room 3 includes outside shell 3a, heater 3b and closed box (storage case) 3c.Outside shell 3a, which is constituted, to be added
The main body in hot cell 3.Heater 3b is arranged between outer side body 3a and closed box 3c.Closed box 3c is in inside with closed state
Storage is sintered body 10.Based on such structure, heating room 3 can prevent heater 3b and outside shell 3a by ungrease treatment
When the decomposition gaseous contamination that generates.
Heating room 3 is by driving heater 3b to heat the body 10 that is sintered being accommodated in closed box 3c.Heating
The heat of device 3b also passes to outside shell 3a.Therefore, heating room 3 (outside shell 3a) discharges heat into furnace body 2.
In the present embodiment, it as body 10 is sintered, has used and has been mixed into resin in metal powder or ceramic powders etc.
Material is sintered as adhesive.Heating room 3 is sintered body 10 by heating to carry out the ungrease treatment for being sintered body 10
Or sintering processes.
Heating room 3 is heated to making to be sintered in ungrease treatment the humidity province of the resin gasification or melting that include in body 10
Domain.When carrying out ungrease treatment, heating room 3 makes inert gas (carrier gas), reducing gas or oxidizing gas with defined flow
It is flowed into closed box 3c, makes the internal pressure decompression state of closed box 3c.
In addition, heating room 3 is heated to making the temperature region for being sintered the sintering of body 10 after ungrease treatment in sintering processes.
When being sintered, heating room 3 flows into inert gas (carrier gas), reducing gas or oxidizing gas with defined flow
Into closed box 3c, make internal pressure decompression or normal pressure state.
The internal atmosphere (exhaust) for heating room 3 (closed box 3c) is discharged to the outside of furnace body 2 by discharge path portion 5.At this
In embodiment, discharge path portion 5 has main path portion 6 and individual path portion 7.
Main path portion 6 is made of the piping for forming the exhaust pathway of connection heating room 3 and exhaust apparatus 15.Specifically,
Main path portion 6 is arranged to run through the state of outside shell 3a and furnace body 2 and extending downward from closed box 3c.Main path portion
6 exhaust is carried out by the work of exhaust apparatus 15.Exhaust apparatus 15 by vacuum pump such as constituting.Main path portion 6
Exhaust be discharged to the outside via the outlet 9 being connect with exhaust apparatus 15.Gas based on such structure, in closed box 3c
Atmosphere is discharged to the outside via main path portion 6.
Individual path portion 7 in the inside of furnace body 2 from 6 branch, main path portion, by formed connection heating room 3 (closed box 3c) and
The piping of the discharge path of exhaust apparatus 15 is constituted.Individual path portion 7 is arranged to following state: along heating 3 (outer shell of room
Body 3a) bottom plate extend to a side after, furnace body 2 is run through and bending about 90 degree downwards.The exhaust in individual path portion 7 is
It is carried out by the work of exhaust apparatus 15.The exhaust in individual path portion 7 is via 9 row of outlet connecting with exhaust apparatus 15
Outside is arrived out.
A part configuration in main path portion 6 and individual path portion 7 is in the inside of furnace body 2.Setting in individual path portion 7 exists
It is heated by the heat discharged from heating room 3 (outside shell 3a) the part of the inside of furnace body 2.The inside temperature in individual path portion 7
Degree determines at a distance from room 3 according to from heating room 3 received heat, i.e. with heating.In the present embodiment, individual path portion 7
It is set at a distance from heating room 3: being heated by the heating room 3 when at least having been started firing processing, configuration is made to exist
The internal temperature in the individual path portion 7 of the inside of furnace body 2 is higher than the gasification temperature for being sintered the resin in body 10 included.
Here, the temperature for the exhaust being discharged from heating room 3 (closed box 3c) is lower closer to the downstream in discharge path portion 5.
That is, the distance flowed in the piping in discharge path portion 5 is longer, the temperature of exhaust is lower.In the present embodiment, individual path
Path length of the path than the configuration in main path portion 6 in the inside of furnace body 2 of configuration in portion 7 in the inside of furnace body 2.Therefore,
Compared with via main path portion 6 the case where, via the arrival furnace body 2 in the case where individual path portion 7 outside when exhaust temperature
Du Genggao.
Length of the configuration in the path of the inside of furnace body 2 in individual path portion 7 is for example preferably set in furnace body 2
The half of space S or so that side is formed.In such manner, it is possible to sufficiently reduce the temperature for the exhaust flowed in individual path portion 7.
Fig. 2 is the cross-sectional view for showing the major part structure in discharge path portion 5.Fig. 2 is to be surrounded with Fig. 1 by double dot dash line
The corresponding cross-sectional view of region A.As shown in Fig. 2, second internal diameter D2 of the first internal diameter D1 in individual path portion 7 than main path portion 6
It is small.That is, in the present embodiment, the flow path area in individual path portion 7 is smaller than the flow path area in main path portion 6.As a result, in main road
The flow velocity for the exhaust that the velocity ratio for the exhaust flowed in diameter portion 6 flows in individual path portion 7 is fast, therefore can generate and make to be vented
Energetically it is drawn into the inhalation power of 7 side of individual path portion.
In addition, the flow velocity for the exhaust flowed in individual path portion 7 can be according to the first internal diameter D1's and the second internal diameter D2
Ratio is adjusted.In order to accelerate the flow velocity for the exhaust flowed in individual path portion 7, as long as reducing aforementioned proportion.But
It is that, if ratio becomes too small (being, for example, less than 1/10), flow velocity becomes too fast, generates the pressure loss.On the other hand, if made
Aforementioned proportion becomes excessive (being greater than 1/2), then the flow velocity for the exhaust flowed in individual path portion 7 is slack-off, cannot be abundant
Ground generates above-mentioned inhalation power.
In view of this, in the discharge path portion 5 of present embodiment, make the ratio of the first internal diameter D1 and the second internal diameter D2
1/10 up to 1/2.The discharge path portion 5 of present embodiment is for example using the internal diameter (the first internal diameter D1) in individual path portion 7
25mm, main path portion 6 internal diameter (the second internal diameter D2) be 100mm discharge path portion.
By being set as such ratio, the current difference in main path portion 6 and individual path portion 7 can be suitably adjusted.Cause
This, is able to suppress the generation of the pressure loss in individual path portion 7, and generating makes exhaust energetically be drawn into individual path portion
The inhalation power of 7 sides.
In the present embodiment, the midway in main path portion 6 is arranged in recoverer 4.That is, recoverer 4 via main path portion 6 with
Room 3 is heated to connect.Recoverer 4 be used for recycle by ungrease treatment from be sintered body 10 discharge resin 30.
The vacuum degreasing fritting furnace 1 of present embodiment also has path switching part 8 and control unit 12, the path switching part 8
The discharge path for heating the internal atmosphere of room 3 (closed box 3c) is switched between main path portion 6 and individual path portion 7.
Main path portion 6 can be used in the case where carrying out ungrease treatment and carry out heating 3 (closed box of room for vacuum degreasing fritting furnace 1 as a result,
Exhaust 3c), can be used in the case where firing processing individual path portion 7 and carry out the row of heating room 3 (closed box 3c)
Gas.
Path switching part 8 has the first valve 8a and the second valve 8b.First valve 8a (opening and closing member) is arranged in main path portion 6
Furnace body 2 outside, main path portion 6 can be opened and closed.On the other hand, the second valve 8b is arranged in individual path portion 7
Individual path portion 7 can be opened and closed in the outside of furnace body 2.Since the first valve 8a and the second valve 8b configuration is in the outer of furnace body 2
Side, therefore prevent because exposing the failure etc. generated at high temperature.
In the present embodiment, ratio recoverer 4 of the first valve 8a configuration in the path in main path portion 6 is close to furnace body 2
Position.That is, the first valve 8a configuration is near furnace body 2.Thereby, it is possible to shorten being located at from furnace body 2 to the first in main path portion 6
Part (hereinafter referred to as exterior portion 16) between valve 8a.
In the present embodiment, the second valve 8b configuration is near furnace body 2.Thereby, it is possible to shorten in individual path portion 7
Positioned at from the part (hereinafter referred to as exterior portion 17) between the 2 to the second valve of furnace body 8b.
Control unit 12 is electrically connected with path switching part 8, controls the opening and closing of the first valve 8a and the second valve 8b.
The vacuum degreasing fritting furnace 1 of present embodiment is when carrying out ungrease treatment, using main path portion 6 as discharge path
Portion 5.That is, control unit 12 is in an open state the first valve 8a to the transmission of path switching part 8, makes second when carrying out ungrease treatment
The instruction that valve 8b is in off state.Path switching part 8 according to the signal sent from control unit 12, controlled by the diameter switching part 8 that satisfies the need
It makes so that the first valve 8a is in an open state, is in off state the second valve 8b.As a result, as based on discharge path portion 5 from adding
The discharge path that hot cell 3 (closed box 3c) is risen, can utilize main path portion 6.
The vacuum degreasing fritting furnace 1 of present embodiment is when being sintered, using individual path portion 7 as discharge path
Diameter portion 5.That is, when being sintered, control unit 12 is in off state the first valve 8a to the transmission of path switching part 8, makes the
The switching command that two valve 8b are in an open state.Path switching part 8 is according to the signal sent from control unit 12, and satisfy the need diameter switching part 8
It is controlled such that the first valve 8a is in off state, is in an open state the second valve 8b.As a result, as based on discharge path portion 5
The discharge path from heating room 3 (closed box 3c), individual path portion 7 can be utilized.
Then, the movement of the vacuum degreasing fritting furnace of present embodiment 1 is illustrated.Firstly, vacuum degreasing fritting furnace 1
Carry out ungrease treatment.Operator passes through the close heating room 3 the door portion 2b for opening furnace body 2.Then, body 10 will be sintered with close
After closed state is accommodated in closed box 3c, door portion 2b is closed.Then, as defined in being set as in heating room 3 (closed box 3c)
Temperature, pressure condition.
Vacuum degreasing fritting furnace 1 control unit 12 in a manner of opening main path portion 6 and close individual path portion 7 to
One valve 8a and the second valve 8b are controlled.Then, by making exhaust apparatus 15 work, attract by being burnt in closed box 3c
The decomposition gas that adhesive (resin) in knot body 10 generates passes through the discharge out of closed box 3c (heating room 3) of main path portion 6.
In addition, be for example maintained in closed box 3c relatively low temperature (such as 400 DEG C) in the case where carrying out ungrease treatment, and
And provide the inert gas (carrier gas) of specified amount.In addition, the pressure in closed box 3c is decompression state.
By ungrease treatment from decomposition gas that the resin that in body 10 includes generates is sintered together with carrier gas via master
Path portion 6 reaches configuration in the recoverer 4 in the outside of furnace body 2.It decomposes gas to solidify by the cooling in recoverer 4, make
Adhere to for resin 30.In this way, carrying out from the ungrease treatment for being sintered the discharge resin of body 10.In addition, the non-conduct in recoverer 4
A part of the decomposition gas of resin recycling imported into outlet 9 via exhaust apparatus 15 together with carrier gas, is being arranged by setting
It exports the supplemental parts (such as filter etc.) on 9 and is recovered.
Inner surface in main path portion 6 is attached with through ungrease treatment from being sintered the isolated resin of body 10.Especially
As following state: the temperature in main path portion 6 reduce biggish part (for example, be located at furnace body 2 outside outside
Part 16) it is attached with more resin.
Since the part of the second valve of ratio 8b on the upstream side in individual path portion 7 is not related to closed channel in ungrease treatment, because
This decomposes gas and is flowed into inside.Therefore, the part by the upstream ratio the second valve 8b in individual path portion 7, because of ungrease treatment
And resin is attached in inner surface.Particularly into following state: the temperature in individual path portion 7 reduces to obtain biggish portion
(exterior portion 17 positioned at the outside of furnace body 2) is divided to be attached with more resin.
As described above, the ungrease treatment of vacuum degreasing fritting furnace 1 terminates.Then, vacuum degreasing fritting furnace 1 is sintered place
Reason.When being sintered, high temperature (such as 1400 DEG C) are set in closed box 3c, and allow inert gas to flow through on one side
Pressure is set to become decompression or normal pressure state on one side.Therefore, it needs to be used for before starting sintering processes after ungrease treatment
The time for increase the temperature in closed box 3c.
After ungrease treatment, vacuum degreasing fritting furnace 1 is to close main path portion 6 and open the side in individual path portion 7
Formula switches discharge path portion 5.Specifically, vacuum degreasing fritting furnace 1 makes first to the transmission of path switching part 8 by control unit 12
The switching command that valve 8a is in off state, is in an open state the second valve 8b.Path switching part 8 is according to sending from control unit 12
Signal, the diameter switching part 8 that satisfies the need are controlled, so that the first valve 8a is in off state, the second valve 8b are made to become opening state.Separately
Outside, as long as the switching in discharge path portion 5 is at least before sintering processes start, then the moment can be arbitrary.
After closing main path portion 6 and opening individual path portion 7, control unit 12 makes exhaust apparatus 15 work.By
This, the atmosphere in heating room 3 (closed box 3c) is discharged by individual path portion 7.
Before starting sintering processes, the temperature heated in room 3 rises always.Setting in individual path portion 7 exists
The part of the inside of furnace body 2 is risen by the temperature with heating room 3 (closed box 3c) and is discharged into (the outside shell of heating room 3
Heat around 3a) is heated.Therefore, the internal temperature in individual path portion 7 rises.It is attached to individual path portion 7 as a result,
The resin decomposition of inner surface and generate decomposition gas.The decomposition gas imported into outlet via exhaust apparatus 15 together with carrier gas
9, and it is arranged at supplemental parts (such as the filter etc.) recycling of outlet 9.
In the present embodiment, at least make the individual path portion 7 of inside configured in furnace body 2 when starting firing processing
Internal temperature be higher than and be sintered the gasification temperature of the resin for including in body 10.As a result, before starting firing processing, Neng Goutong
It crosses the resin decomposition on the inner surface for being attached to the individual path portion 7 for the inside for being configured at furnace body 2 and aerifies and substantially go
It removes.But since the exterior portion 17 in the outside positioned at furnace body 2 in individual path portion 7 is not heated, including remain
The state of resin is attached on surface.
In the vacuum degreasing fritting furnace 1 of present embodiment, by by the configuration in individual path portion 7 in furnace body 2
The path of side lengthens, and can make the temperature for the exhaust being discharged when sintering processes from heating room 3 before reaching exterior portion 17
Period reduces.Therefore, it can prevent from generating decomposition gas because the exhaust of high temperature is flowed into exterior portion 17, to prevent from decomposing
Adverse current of the gas to heating room 3.
On the other hand, the part of the inside that furnace body 2 is arranged in main path portion 6 is by with heating room 3 (closed box 3c)
Temperature rise and the heat that is discharged into around the heating room 3 (outside shell 3a) is heated.Therefore, main path portion 6 is interior
Portion's temperature rises.The resin decomposition that is attached on the inner surface in main path portion 6 as a result, and generate decomposition gas.The decomposition gas
It is imported into outlet 9 via exhaust apparatus 15 together with carrier gas, and is arranged at supplemental parts (such as the filter of outlet 9
Deng) recycling.
In this way, the main path portion 6 of the inside of furnace body 2 can be configured at by that will be attached to before starting firing processing
Inner surface on resin decomposition and aerify and substantially remove.But due to the outside positioned at furnace body 2 in main path portion 6
Exterior portion 16 be not heated, therefore remain the state for being attached with resin on an internal surface.
In the vacuum degreasing fritting furnace 1 of present embodiment, have in the exhaust for being burnt into the high temperature for coming self-heating room 3 when processing
Exterior portion 16 may be flowed into.In this case, the resin for being attached to the inside of exterior portion 16 sometimes is decomposed and generates
Decompose gas R1 (referring to Fig. 2).
In the present embodiment, as shown in Fig. 2, by making the flow velocity in the velocity ratio main path portion 6 in individual path portion 7
Fastly, the inhalation power for making exhaust energetically be drawn into 7 side of individual path portion can be generated.Therefore, main path portion 6 and branch path are reached
Decomposition gas R1 near the interconnecting piece in diameter portion 7 is inhaled into the inside in individual path portion 7.Therefore, even if it is outer being attached to
The resin decomposition of the inside of side section 16 and generate decompose gas R1 in the case where, also can be by energetically being pulled in branch
7 side of path portion come prevent to heating 3 side of room adverse current.
The vacuum degreasing fritting furnace 1 of present embodiment is by shortening main road near furnace body 2 for the first valve 8a configuration
The exterior portion 16 in the outside positioned at furnace body 2 in diameter portion 6.As a result, when being burnt into processing, it can reduce and be produced by exterior portion 16
The yield of raw decomposition gas R1 itself.
As described above, vacuum degreasing fritting furnace 1 according to the present embodiment, even if being sintered place after ungrease treatment
In the case where reason, as the exhaust pathway for being in high temperature, the branch in the inside of furnace body 2 from 6 branch, main path portion can be utilized
Path portion 7.In addition, vacuum degreasing fritting furnace 1 is closed when being sintered, through the first valve 8a in the upstream side of recoverer 4
The exhaust closed main path portion 6, therefore be reliably prevented from high temperature flows to recoverer 4.
As a result, when being sintered, the exhaust of high temperature does not flow to recoverer 4, therefore can prevent from being recovered to back
The resin in receipts portion 4, which generates, decomposes gas.Therefore, it can prevent due to decomposing adverse current of the gas into heating room 3 (closed box 3c)
Cause to be sintered the carbonization of body 10.Therefore, vacuum degreasing fritting furnace 1 according to the present embodiment, even if being taken off in a furnace
In the case where rouge processing and sintering processes, it can also prevent from being sintered the carbonization of body 10.
(second embodiment)
Then, the structure of the vacuum degreasing fritting furnace of second embodiment is illustrated.Present embodiment is real with first
Apply mode the difference is that individual path portion shape.Therefore, to the structure common with first embodiment and component mark
Identical label is infused, its explanation is omitted or simplified.
Fig. 3 is the cross-sectional view for showing the outline structure of vacuum degreasing fritting furnace 1A of present embodiment.As shown in figure 3, this
The vacuum degreasing fritting furnace 1A of embodiment have furnace body 2, heating room 3, recoverer 4, discharge path portion 5, path switching part 8,
Control unit 12 and exhaust apparatus 15.
In the present embodiment, discharge path portion 5 has main path portion 6 and individual path portion 27.Individual path portion 27 is set
It is set to following state: after linearly extending along the bottom plate of heating room 3 (outside shell 3a), and oliquely downward bending
Through furnace body 2.That is, individual path portion 27 have downstream-side channel portion 28, the downstream-side channel portion 28 with from main path portion 6
The upstream side of connection bottom surface far from heating room 3 (outside shell 3a) towards downstream side.
Vacuum degreasing fritting furnace 1A according to the present embodiment, with being flowed in individual path portion 27 towards downstream side
Exhaust temperature be not readily susceptible to heating room 3 (outside shell 3a) heat influence.Therefore, it can be effectively reduced in branch
The temperature for the exhaust flowed in path portion 7.Therefore, the length configured in the individual path portion 27 of the inside of furnace body 2 can be than the
One embodiment is short.
It, without departing from the spirit of the invention can be in addition, the content that present invention is not limited to the embodiments described above
It suitably changes.
Label declaration
1,1A: vacuum degreasing fritting furnace；2: furnace body；3: heating room；3a: outside shell；3b: heater；3c: closed box
(storage case)；4: recoverer；5: discharge path portion；6: main path portion；7,27: individual path portion；8: path switching part；9: row
Outlet；10: being sintered body；12: control unit；28: downstream-side channel portion；D1: the first internal diameter；D2: the second internal diameter.
Claims (10)
1. a kind of vacuum degreasing fritting furnace carries out wrapping the resiniferous ungrease treatment for being sintered body and firing processing, wherein
The vacuum degreasing fritting furnace includes
Furnace body；
Room is heated, the inside of the furnace body is configured at, the body that is sintered is heated；
The internal atmosphere of the heating room is discharged to the outside of the furnace body by discharge path portion；And
Recoverer, recycling by the ungrease treatment from it is described be sintered body be discharged resin,
The discharge path portion includes
Main path portion connects the heating room and the recoverer；And
Individual path portion is connected in the inside of the furnace body from the main road path portion Zhi Eryu outlet.
2. vacuum degreasing fritting furnace according to claim 1, wherein
The flow path area in the individual path portion is smaller than the flow path area in the main path portion.
3. vacuum degreasing fritting furnace according to claim 2, wherein
First internal diameter in the individual path portion is smaller than second internal diameter in the main path portion, first internal diameter and described second
The ratio of internal diameter is 1/10 up to 1/2.
4. vacuum degreasing fritting furnace according to claim 1 or 2, wherein
The path of the inside for being configured at the furnace body in the individual path portion is more described than being configured in the main path portion
The path length of the inside of furnace body.
5. according to claim 1 to vacuum degreasing fritting furnace described in any one in 4, wherein
The vacuum degreasing fritting furnace also has path switching part, the path switching part by it is described heating room internal atmosphere discharge
Path switches between the main path portion and the individual path portion.
6. vacuum degreasing fritting furnace according to claim 5, wherein
The path switching part includes the opening and closing member that the main path portion is opened and closed, and the opening and closing member configuration is described
Recoverer described in ratio in the path in main path portion is close to the position of the furnace body.
7. vacuum degreasing fritting furnace according to claim 5 or 6, wherein
The vacuum degreasing fritting furnace also has control unit, and the control unit is after the ungrease treatment, the switching of the path Xiang Suoshu
Portion sends the switching command for switching in the discharge path portion from the main path portion to the individual path portion.
8. according to claim 1 to vacuum degreasing fritting furnace described in any one in 7, wherein
At least when starting firing processing, it is configured at the internal temperature ratio in the individual path portion of the inside of the furnace body
The gasification temperature of the resin is high.
9. according to claim 1 to vacuum degreasing fritting furnace described in any one in 8, wherein
The individual path portion has downstream-side channel portion, and the downstream-side channel portion is with upper from connecting with the main path portion
Side is flowed towards downstream side and far from the heating room.
10. according to claim 1 to vacuum degreasing fritting furnace described in any one in 9, wherein
The heating room includes:
Outside shell；
Storage case is configured at the inside of the outside shell, is sintered body described in storage；And
Heater is arranged between the outside shell and the storage case,
The internal atmosphere of the storage case is discharged to the outside of the furnace body by the discharge path portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-063836 | 2017-03-28 | ||
| JP2017063836 | 2017-03-28 | ||
| PCT/JP2018/007562 WO2018180155A1 (en) | 2017-03-28 | 2018-02-28 | Vacuum degreasing sintering furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110494237A true CN110494237A (en) | 2019-11-22 |
| CN110494237B CN110494237B (en) | 2022-03-08 |
Family
ID=63677015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880021076.9A Active CN110494237B (en) | 2017-03-28 | 2018-02-28 | Vacuum degreasing sintering furnace |
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| JP (1) | JPWO2018180155A1 (en) |
| CN (1) | CN110494237B (en) |
| WO (1) | WO2018180155A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115446311A (en) * | 2022-09-19 | 2022-12-09 | 株洲坤锐硬质合金有限公司 | Vacuum degreasing sintering furnace for hard alloy production |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114829037A (en) * | 2019-12-04 | 2022-07-29 | 曼特尔公司 | Furnace system and method of use |
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| JPH10318676A (en) * | 1997-05-19 | 1998-12-04 | Shimazu Mekutemu Kk | Heat treatment furnace |
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| CN203944838U (en) * | 2014-07-14 | 2014-11-19 | 昆山安泰美科金属材料有限公司 | Vacuum degreasing fritting furnace |
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2018
- 2018-02-28 JP JP2019509035A patent/JPWO2018180155A1/en active Pending
- 2018-02-28 WO PCT/JP2018/007562 patent/WO2018180155A1/en active Application Filing
- 2018-02-28 CN CN201880021076.9A patent/CN110494237B/en active Active
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| JPH0641610A (en) * | 1992-07-28 | 1994-02-15 | Ishikawajima Harima Heavy Ind Co Ltd | Vacuum degreasing and sintering furnace and degreasing method using the furnace |
| JPH09145257A (en) * | 1995-11-17 | 1997-06-06 | Shimazu Mekutemu Kk | Vacuum dewaxing-sintering furnace |
| JPH10318676A (en) * | 1997-05-19 | 1998-12-04 | Shimazu Mekutemu Kk | Heat treatment furnace |
| JP2002030305A (en) * | 2000-07-13 | 2002-01-31 | Mold Research Co Ltd | Method for producing sintered body containing titanium and titanium alloy |
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| JP2008201670A (en) * | 2008-03-24 | 2008-09-04 | Ngk Insulators Ltd | Method of manufacturing non-oxide ceramic sintered compact |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446311A (en) * | 2022-09-19 | 2022-12-09 | 株洲坤锐硬质合金有限公司 | Vacuum degreasing sintering furnace for hard alloy production |
| CN115446311B (en) * | 2022-09-19 | 2023-07-25 | 株洲坤锐硬质合金有限公司 | Vacuum degreasing sintering furnace for hard alloy production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110494237B (en) | 2022-03-08 |
| WO2018180155A1 (en) | 2018-10-04 |
| JPWO2018180155A1 (en) | 2020-02-13 |
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