CN107282927A - A kind of mould for pressure sintering - Google Patents
A kind of mould for pressure sintering Download PDFInfo
- Publication number
- CN107282927A CN107282927A CN201610222540.3A CN201610222540A CN107282927A CN 107282927 A CN107282927 A CN 107282927A CN 201610222540 A CN201610222540 A CN 201610222540A CN 107282927 A CN107282927 A CN 107282927A
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- China
- Prior art keywords
- pressure head
- cover plate
- hole
- cover board
- board hole
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Classifications
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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
- B22F3/12—Both compacting and sintering
Abstract
This application discloses a kind of mould for pressure sintering, including main part and pressure head, pressure head includes the first pressure head and the second pressure head, and mould also includes the first cover plate and the second cover plate, and the first cover plate and the first pressure head are connected, and the second cover plate and the second pressure head are connected；Main part includes interconnected the first cover board hole, the second cover board hole and pressure head hole, first cover board hole and the second cover board hole are located at two ends on the axial direction of pressure head hole respectively, the aperture of first cover board hole and the aperture of the second cover board hole are all higher than the aperture in pressure head hole, first cover board hole is used to accommodate the first cover plate, second cover board hole is used to accommodate the second cover plate, and pressure head hole is used to accommodate the first pressure head and the second pressure head；There is gap between the bottom of first cover plate and the first cover board hole, there is gap between the second cover plate and the bottom of the second cover board hole.It is arranged such, the loss of gaseous substance during high temperature pressure reaction-sintered can be reduced, sintering reaction is fully completed, obtains preferable powdered metallurgical material product.
Description
Technical field
It is more particularly to a kind of to be used for pressure sintering the present invention relates to technical field of powder metallurgy material preparation
Mould.
Background technology
It is most of to need different material in the case of pressurization in powdered metallurgical material preparation process
Powder is by being sintered at high temperature into product.
Under normal circumstances, the mould for pressure sintering mainly includes main part 01 and two cylindrical crimps
03, wherein main part 01 is provided with the circular cylindrical cavity 02 for accommodating pressure head., it is necessary to will before preparation
One of cylindrical crimp 03 is inserted in circular cylindrical cavity 02, and powder body material then is positioned over into cylinder
In cavity 02, finally another cylindrical crimp 03 is put into circular cylindrical cavity 02 again, two cylinders
Pressure head 03 is oppositely arranged so that powder body material is placed between two cylindrical crimps 03, as shown in Figure 1.
Carry out in high-temperature sintering process, axial compressive force is transferred to by two cylindrical crimps 03 and is placed in cylindrical cavity
Powder body material in body 02, powder body material is finally sintered into circle under the double action of high moderate pressure
Columnar block material product.
Above-mentioned mould is primarily adapted for use in the normal pressures sintering of one or more solid materials either without gas phase
Material participates in the stress reaction sintering of chemical reaction, due to needing cylindrical crimp 03 being put into cylindrical cavity
In body 02, for the ease of being put into cylindrical crimp 03, the cavity wall of cylindrical crimp 03 and circular cylindrical cavity 02
Between there is certain gap, for have gaseous substance participate in reaction-sintered or sintering process in have gas
The reaction-sintered of release, in the presence of axial high pressure, gas is easily by cylindrical crimp 03 and cylinder
Gap discharge between the cavity wall of shape cavity 02, so that cause the gas phase wretched insufficiency for participating in reaction-sintered,
Cause to chemically react not thoroughly during pressure sintering, final is difficult to obtain preferable by stress reaction sintering
Powder metallurgy block materials product.
The content of the invention
In view of this, the purpose of the application is to provide a kind of mould for pressure sintering, can reduce height
The loss of gaseous substance, fully completes sintering reaction during temperature and pressure power reaction-sintered, obtains preferable powder
Last metallurgy block materials product.
This application provides a kind of mould for pressure sintering, the mould includes main part and pressure head,
The pressure head includes the first pressure head and the second pressure head, and the mould also includes the first cover plate and the second cover plate,
Wherein, first cover plate is connected with first pressure head, second cover plate and second pressure head
It is connected；The main part includes interconnected the first cover board hole, the second cover board hole and pressure head hole, institute
State two ends that the first cover board hole and second cover board hole are located on the axial direction of the pressure head hole respectively
Portion, and the aperture of first cover board hole and the aperture of second cover board hole are all higher than the pressure head hole
Aperture；Wherein, first cover board hole is used to accommodate first cover plate, and second cover board hole is used
In accommodating second cover plate, the pressure head hole is used to accommodate first pressure head and second pressure head；
There is gap between the bottom of first cover plate and first cover board hole, second cover plate with it is described
There is gap between the bottom of second cover board hole.
Preferably, first cover plate be placed in the end of first cover board hole and first cover board hole it
Between exist and be used to fill the gap of graphite paper；Second cover plate be placed in the end of second cover board hole with
There is the gap for being used for filling graphite paper between second cover board hole；First pressure head and the pressure head
There is between hole and the gap for being used for filling graphite paper between second pressure head and the pressure head hole.
Preferably, first cover plate and second cover plate include first end and the second end, described the
The diameter of one end is more than the diameter at second end, and the second end of the first cover plate is used to be placed in first lid
In plate hole, and there is gap between the second end of first cover plate and the bottom of first cover board hole,
The step surface that second end of the first end of first cover plate and first cover plate is formed be used for it is described
Main part is abutted against；Second end of second cover plate is used to be placed in second cover board hole, and described
There is gap between second end of the second cover plate and the bottom of second cover board hole, second cover plate
The step surface that second end of first end and second cover plate is formed is used to abut against with the main part；
First cover plate is provided with the first mounting hole, and first pressure head runs through first mounting hole and described
One end of first pressure head is placed in the pressure head hole, and the other end of first pressure head is installed with described first
Hole phase clamping；Second cover plate is provided with the second mounting hole, and second pressure head is through the described second peace
The one end for filling hole and second pressure head is placed in the pressure head hole, the other end of second pressure head and institute
State the second mounting hole phase clamping.
Preferably, first pressure head is connected with the end that first cover plate is placed in first cover board hole
Connect, the end that second pressure head is placed in second cover board hole with second cover plate is connected；It is described
Existing between the cavity wall of the periphery wall of first cover plate and first cover board hole is used to fill between graphite paper
Existing between the cavity wall of gap, the periphery wall of second cover plate and second cover board hole is used to fill graphite
The gap of paper.
Preferably, the main part is additionally provided with perforate, and radial direction of the perforate along the main part is opened
If.
Preferably, the main part is high-density graphite main part, and first cover plate is that graphite first is covered
Plate, second cover plate is the cover plate of graphite second, and first pressure head is the pressure head of graphite first, described the
Two pressure heads are the pressure head of graphite second.
A kind of mould for pressure sintering provided herein, mould includes main part and pressure head, pressure
Head includes the first pressure head and the second pressure head, and mould also includes the first cover plate and the second cover plate, wherein, first
Cover plate and the first pressure head are connected, and the second cover plate and the second pressure head are connected；Main part includes being interconnected
The first cover board hole, the second cover board hole and pressure head hole, the first cover board hole and the second cover board hole are located at pressure respectively
The aperture of two ends on head bore axial direction, the aperture of the first cover board hole and the second cover board hole is big
Aperture in pressure head hole.Wherein, the first cover board hole is used to accommodate the first cover plate, and the second cover board hole is used to hold
Receive the second cover plate, pressure head hole is used to accommodate the first pressure head and the second pressure head；First cover plate and the first cover board hole
Bottom between there is gap, there is gap between the second cover plate and the bottom of the second cover board hole.So set
Put, when carrying out high temperature pressure sintering, for having the reaction-sintered of gaseous substance participation or course of reaction
In have gas generate reaction-sintered, gas is in the presence of high pressure, even if via the first pressure head and second
Space effusion between pressure head and pressure head hole, because the first cover plate and the second cover plate are respectively placed in the first cover plate
In hole and the second cover board hole, the first cover plate and the second cover plate play a part of closing cap plate hole, the gas of effusion
Cognition is concentrated in the gap between the first cover plate and the first cover board hole and the second cover plate and the second cover board hole
Between gap in, can so avoid gas from being extruded reaction system, so as to avoid reaction-sintered
During there is the not enough situation of gas phase and occur, the loss that gas phase is reacted in sintering process can be reduced, filled
Divide and complete sintering reaction, so as to obtain preferable sintering material product.
Compared with prior art, by setting the first cover board hole and the second cover board hole, and the first cover plate is put
In in the first cover board hole, the first cover plate plays a part of closing the first cover board hole, similarly puts the second cover plate
Enter in the second cover board hole, the second cover plate plays a part of closing the second cover board hole, in this way, can cause height
The gaseous substance of reaction or the life during high temperature pressure reaction-sintered are participated in during temperature and pressure power reaction-sintered
Into air accumulation in gap between the first cover plate and the first cover board hole and the second cover plate and the second lid
In gap between plate hole, so as to avoid the not enough situation generation of gas phase occur during reaction-sintered,
The loss that gas phase is reacted in sintering process can be reduced, sintering reaction is fully completed, so as to obtain preferably
Sintering material product.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing used required for applying in example or description of the prior art is briefly described, it should be apparent that, below
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the mould for being used for pressure sintering in the prior art；
Fig. 2 is the main part for the mould for being used for pressure sintering in embodiment provided herein
Structural representation；
Fig. 3 is the schematic diagram of the top view of main part shown in Fig. 2；
Fig. 4 is the structural representation of the first cover plate in embodiment one provided herein；
Fig. 5 is the schematic diagram of the top view of the first cover plate shown in Fig. 4；
Fig. 6 is provided in the main part and embodiment one in embodiment provided herein
Cover plate mutually assemble after structural representation；
Fig. 7 is the structural representation of the first cover plate and the first pressure head in embodiment two provided herein；
Fig. 8 is provided in the main part and embodiment two in embodiment provided herein
First cover plate mutually assemble after structural representation；
Wherein, in Fig. 1：
Main part 01, circular cylindrical cavity 02, cylindrical crimp 03；
Fig. 2 is into Fig. 6：
Main part 1, the first cover board hole 2, pressure head hole 3, the second cover board hole 4, perforate 5, the first cover plate 1-6,
The first end 1-6a of first cover plate, the second end 1-6b of the first cover plate, the first mounting hole 1-6c, the second cover plate
1-7, the first pressure head 1-8, the second pressure head 1-9；
Fig. 7 is into Fig. 8：
Main part 1, the first cover board hole 2, pressure head hole 3, the second cover board hole 4, perforate 5, the first cover plate 2-1,
Second cover plate 2-2, the first pressure head 2-3, the second pressure head 2-4.
Embodiment
The invention discloses a kind of mould for pressure sintering, high temperature pressure reaction-sintered mistake can be reduced
The loss of gaseous substance, fully completes sintering reaction in journey, obtains preferable powder metallurgy block materials system
Product.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the invention, and
The embodiment being not all of.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
In this embodiment, the mould for pressure sintering includes main part 1 and pressure head, wherein,
Pressure head is two, and respectively the first pressure head and the second pressure head, mould also include the first cover plate and the second cover plate,
First cover plate and the first pressure head are connected, and the second pressure head and the second cover plate are connected；Main part 1 includes phase
Intercommunicated the first cover board hole 2, the second cover board hole 4 and pressure head hole 3, the first cover board hole 2 and the second cover plate
Hole 4 is located at two ends on the axial direction of pressure head hole 3, the aperture of the first cover board hole 2 and the respectively
The aperture of two cover board holes 4 is all higher than the aperture in pressure head hole 3.Wherein the first cover board hole 2 is used to accommodate first
Cover plate, the second cover board hole 4 is used to accommodate the second cover plate, and pressure head hole 3 is used to accommodate the first pressure head and second
Pressure head；There is gap, the second cover plate and the second cover plate between the bottom of first cover plate and the first cover board hole 2
There is gap between the bottom in hole 4, refer to Fig. 2 to Fig. 3.
It is arranged such, when carrying out pressure sintering, the first pressure head and the first cover plate is first respectively put into pressure head
In the cover board hole 2 of hole 3 and first, the powder body material for needing to sinter then is placed on the first pressure head towards the
The end of two pressure heads, is then respectively put into the cover board hole 4 of pressure head hole 3 and second by the second pressure head and the second cover plate
In, now, the first pressure head and the second pressure head are oppositely arranged and the first pressure head be placed in pressure head hole 3 end and
There is certain gap in the second pressure head, powder body material is to be placed on both between being placed in the end in pressure head hole 3
Between gap in.There is intermediate gas release for having in the reaction-sintered of gas phase participation or course of reaction
Reaction-sintered, gas is in the presence of high pressure, even if via the first pressure head and the second pressure head and pressure head hole 3
Between space effusion, because the first cover plate and the second cover plate are respectively placed in the first cover board hole 2 and the second lid
In plate hole 4, the first cover plate and the second cover plate play a part of closing cap plate hole, and escaping gas can be concentrated
In gap between the first cover plate and the first cover board hole 2 and between the second cover plate and the second cover board hole 4
Gap in, can so avoid gas from being extruded reaction system, so as to avoid reaction-sintered process
It is middle the not enough situation generation of gas phase occur, the loss that gas phase is reacted in sintering process can be reduced, it is fully complete
Into sintering reaction, so as to obtain preferable sintering material product.
Compared with prior art, by setting the first cover board hole 2 and the second cover board hole 4, and by the first cover plate
It is placed in the first cover board hole 2, the first cover plate plays a part of closing the first cover board hole 2 so that the first lid
Second cover plate, is similarly put into the second cover board hole 4 by plate and the cavity of the first cover board hole 2 formation closing,
Second cover plate plays a part of closing the second cover board hole 4 so that the second cover plate is formed with the second cover board hole 4
The cavity of closing, in this way, the gaseous substance of reaction is participated in during can causing high temperature pressure reaction-sintered
Or the air accumulation generated during high temperature pressure reaction-sintered in the first cover plate and the first cover board hole 2 it
Between gap in and the gap between the second cover plate and the second cover board hole 4 in, so as to avoid reaction
Occur the not enough situation of gas phase in sintering process to occur, the loss that gas phase is reacted in sintering process can be reduced,
Sintering reaction is fully completed, so as to obtain preferable sintering material product.
It should be noted that in this embodiment, to two pressure heads, two cover plates and cover plate
The renaming in hole, only to facilitate description, the first pressure head is named as by one of pressure head, then it is another
Individual pressure head is the second pressure head, similarly, and the cover plate being connected with the first pressure head is the first cover plate, accommodates first
The cover board hole of cover plate is the first cover board hole 2, and the cover plate being connected with the second pressure head is the second cover plate, accommodates the
The cover board hole of two cover plates is the second cover board hole 4, in addition for the ease of description, to be first put into the first cover plate and the
The explanation carried out exemplified by one pressure head, it is impossible to be used as the foundation for limiting protection domain.
It should also be noted that, in this embodiment, the cross section of the first cover board hole 2, second
The cross section of cover board hole 4 and the cross section in pressure head hole 3 are circular cross section, wherein the first cover board hole 2
The radius of cross section and the radius of cross section of the second cover board hole 4 be all higher than the cross section in pressure head hole 3
Radius, and the bottom of the first cover board hole 2 and the second cover board hole 4 bottom respectively with pressure head hole 3 axially
Two ends on direction are connected, so, it is ensured that the first pressure head passes through the bottom of the first cover board hole 2
End is placed in pressure head hole 3, and the second pressure head is placed in pressure head hole 3 through the bottom in the second pressure head hole 3, and
And play a part of closing the first cover board hole 2 after the first cover plate is placed in the first cover board hole 2, meanwhile,
Play a part of closing the second cover board hole 4 after the second cover plate is placed in the second cover board hole 4.Certainly,
It is not excluded for, according to actual use demand, pressure head hole and cover board hole being set into other shapes.
It should be further stated that, the mould for pressure sintering provided in this embodiment
Tool is when being sintered reaction, and pressurization scope is 0 to 100MPa.
Need to illustrate further, in this embodiment, in the mould of pressure sintering
First cover board hole 2 and the second cover board hole 4 are using the center line in pressure head hole 3 as the symmetrical setting of symmetry axis.
In addition, in this embodiment, in addition it is also necessary to which placing graphite paper, therefore, the first cover plate are placed in
The diameter of the end of first cover board hole 2 is less than the diameter of the first cover board hole 2, and both differences are in 0.2mm
To 0.5mm, so that being formed between the first cover plate and the first cover board hole 2 for filled stone
The gap of black paper；The diameter that second cover plate is placed in the end of the second cover board hole 4 is less than the second cover board hole 4
Diameter, and both differences are in the range of 0.2mm to 0.5mm, so that the second cover plate and second
The gap for filling graphite paper is formed between cover board hole 4；The diameter of first pressure head and the second pressure head it is straight
Footpath is respectively less than the diameter in pressure head hole 3, and the diameter of the first pressure head and the difference of the diameter in pressure head hole 3 and
The difference of the diameter of second pressure head and the diameter in pressure head hole 3 is in the range of 0.2mm to 0.5mm, such as
This so that formed between the first pressure head and pressure head hole 3 and between the second pressure head and pressure head hole 3 for filling out
Fill the gap of graphite paper.
In this way, corresponding graphite paper is placed in advance in pressure head hole 3, and cause graphite paper and pressure head hole 3
Cavity wall fit, be put between the graphite paper in pressure head hole 3 is filled between the first pressure head and pressure head hole 3
In in the gap and gap that is filled between the second pressure head and pressure head hole 3, similarly, then by corresponding graphite
Paper is respectively put into the first cover board hole 2 and the second cover board hole 4 so that be put into the graphite of the first cover board hole 2
The cavity wall of paper and the first cover board hole 2 fits, and is put into the graphite paper and the second cover board hole 4 of the second cover board hole 4
Cavity wall fit, the graphite paper for being put into the first cover board hole 2 is filled in the first cover plate and is placed in the first cover board hole 2
End and the first cover board hole 2 between gap in, be put into the second cover board hole 4 graphite paper and second lid
The cavity wall of plate hole 4 fits, and the graphite paper for being put into the second cover board hole 4 is filled in the second cover plate and is placed in second
In gap between the end of cover board hole 4 and the second cover board hole 4.In this way, ought respectively by the first pressure head,
When second pressure head, the first cover plate and the second cover plate are respectively put into corresponding accommodating chamber, it is ensured that be put into pressure head
The cavity wall of the graphite paper in hole 3 and the wall, the wall of the second pressure head and pressure head hole 3 of the first pressure head is affixed
Close, the cavity wall of the graphite paper being put into the first cover board hole 2 and the first cover plate and the first cover board hole 2 fits,
The cavity wall of the graphite paper being put into the second cover board hole 4 and the second cover plate and the second cover board hole 4 fits, from
And the compactness between pressure head and pressure head hole 3 can be ensured, between the first cover plate and the first cover board hole 2
Compactness between compactness and the second cover plate and the second cover board hole 4, so as to further avoid burning
Tie the effusion of gas in course of reaction, it is to avoid occur the not enough situation of gas phase during reaction-sintered and occur,
So as to obtain preferable sintering material product.
It should be noted that in this embodiment, according to the difference between pressure head and pressure head hole 3
And the difference between cover plate and cover board hole selects the graphite paper of respective thickness, can so ensure mould
Sealing and compactness.
In further scheme, main part 1 is additionally provided with perforate, radial direction of the perforate along main part 1
Direction is opened up, in this way, perforate can for install thermoelectricity occasionally using perforate as IR pointer through hole,
In order to which staff carries out associative operation to reaction-sintered, it is ensured that sintering is smoothed out.
It should be noted that in this embodiment, between perforate and the first pressure head and the second pressure head
Gap position align or axis and the main part 1 of perforate laterally (laterally refer to and main part 1
The perpendicular direction in axial direction) on center line coincide, and perforate specific depth in perforate and pressure head
Set under the premise of hole is disconnected according to actual conditions.
It should also be noted that, the setting number of perforate is set also according to specific service condition.
In addition, in this embodiment, mould is graphite jig, i.e., main part 1 is graphite body
Portion, the first cover plate is the cover plate of graphite first, and the second cover plate is the cover plate of graphite second, and the first pressure head is graphite
First pressure head, the second pressure head is the pressure head of graphite second.Certainly, also it is not excluded for steady using other chemical property
Determine the mould of material.
Hereinbefore, mainly the set-up mode of mould is described in detail, will hereinafter introduced
Two kinds of set-up modes between cover plate and pressure head, detailed in Example one and embodiment two.
Embodiment one
Fig. 4 be refer to Fig. 6, wherein, Fig. 4 and Fig. 5 are the schematic diagram of the first cover plate, the first cover plate
Set-up mode with the second cover plate is similar, and the setting direction of the second cover plate specifically refer to Fig. 4 to Fig. 5.
In the present embodiment, the first cover plate 1-6 and the second cover plate 1-7 include first end and the second end, the
The diameter of one end is more than the diameter at the second end, and the second end 1-6b of the first cover plate is used to be placed in the first cover board hole
In 2, and there is gap, first between the second end 1-6b of the first cover plate and the bottom of the first cover board hole 2
The step surface that the first end 1-6a of cover plate and the second end 1-6b of the first cover plate are formed is used for and main part 1
Abut against；
Second cover plate 1-7 the second end is used to be placed in the second cover board hole 4, and the second of the second cover plate 1-7
There is gap, the second cover plate 1-7 first end and the second cover plate between end and the bottom of the second cover board hole 4
The step surface that 1-7 the second end is formed is used to abut against with main part 1；
First cover plate 1-6 is provided with the first mounting hole 1-6c, the first pressure head 1-8 and runs through the first mounting hole 1-6c
And first pressure head 1-8 one end be placed in pressure head hole 3, the first pressure head 1-8 other end and the first mounting hole
1-6c phase clampings；Second cover plate 1-7 is provided with the second mounting hole, and the second pressure head 1-9 runs through the second mounting hole
And second pressure head 1-9 one end be placed in pressure head hole 3, the second pressure head 1-9 other end and the second mounting hole
Phase clamping.
It is arranged such, the platform that the first end 1-6a of the first cover plate and the second end 1-6b of the first cover plate are formed
Terrace is abutted against with main part 1, the second cover plate 1-7 first end and the second cover plate 1-7 the second end institute shape
Into step surface abutted against with main part 1, so, it is ensured that the first cover plate 1-6 and the second cover plate 1-7
Play a part of closing cap plate hole, improve the sealing of mould, and then gas can be avoided to escape, so that
It can ensure that sintering reaction is fully carried out, obtain preferable sintered products.Similarly, the first pressure head 1-8 is remote
The end in pressure head hole 3 and the first mounting hole 1-6c phase clampings, the second ends of the pressure head 1-9 away from pressure head hole 3
Portion and the second mounting hole phase clamping, can so ensure to connect between the first pressure head 1-8 and the first cover plate 1-6
Compactness, the compactness connected between the second pressure head 1-7 and the second cover plate 1-9, so as to further
Gap effusion of the gas between mounting hole and pressure head is avoided, filling for sintering reaction is may further ensure that
Divide property.
It should be noted that in this specific embodiment, in order to realize the clamping between pressure head and cover plate,
Connection between end and the first mounting hole 1-6c of the first pressure head 1-8 away from pressure head hole 3 connects for interference,
Connection between end and the second mounting hole of the second pressure head 1-9 away from pressure head hole 3 connects for interference, in this way,
When the first ends of the pressure head 1-8 away from pressure head hole 3 be placed in the first mounting hole 1-6c or with the first mounting hole
During 1-6c flushes, end-enclosed first mounting hole 1-6cs of the first pressure head 1-8 away from pressure head hole 3, so that
The sealing of mould can be ensured, similarly, the second pressure head 1-9 equally plays a part of closing the second mounting hole,
Ensure the sealing of mould.Certainly, also it is not excluded for using other set-up modes so that the first pressure head and the
Two pressure heads close corresponding mounting hole.
It should be further stated that, because during actual production, pressure needs to pass by pressure head
It is handed in pressure head hole 3, under the effect of the pressure, pressure head can be along mounting hole towards or away from pressure head hole 3
Direction motion, therefore, when being sintered reaction, axial suitable length is selected according to actual situation
Pressure head used, with ensure end of the pressure head away from pressure head hole 3 can with mounting hole phase clamping, from
And play a part of closing mounting hole, certainly, the axial length of the first pressure head and the second pressure head can be with identical
Can also be different, selected with specific reference to actual demand.
It should also be noted that, in this specific embodiment, the second end 1-6b of the first cover plate is used to be placed in
In first cover board hole 2, the second cover plate 1-7 the second end is used to be placed in the second cover board hole 4, therefore, the
The diameter of second end 1-6b of one cover plate cross section is less than the diameter and two of the cross section of the first cover board hole 2
Difference between person is in the range of 0.2mm to 0.5mm, the cross section at the second cover plate 1-7 the second end
Diameter be less than the second cover board hole 4 cross section diameter and difference between the two in 0.2mm extremely
In the range of 0.5mm.And when being sintered reaction, the second end 1-6b of graphite paper and the first cover plate
Wall and the cavity wall of the first cover board hole 2 fit, the wall at graphite paper and the second cover plate 1-7 the second end
The cavity wall of face and the second cover board hole 4 fits.
Embodiment two
Fig. 7 to Fig. 8 is refer to, wherein the set-up mode of the set-up mode of the second cover plate and the first cover plate is similar
Seemingly, the set-up mode of the second cover plate specifically refer to Fig. 7.
In the present embodiment, the first pressure head 2-3 is placed in the end phase of the first cover board hole 2 with the first cover plate 2-1
Connection, the second pressure head 2-4 is connected with the second cover plate 2-2 ends for being placed in the second cover board hole 4；First lid
The cavity wall of plate 2-1 periphery wall and the first cover board hole 2 fits, the second cover plate 2-2 periphery wall and second
The cavity wall of cover board hole 4 fits.
It is arranged such, the first cover plate 2-1 and the first pressure head 2-3 is set for integral type, the second cover plate 2-2
Set with the second pressure head 2-4 for integral type so that the first pressure head 2-3 and the first cover plate 2-1 are placed in the first lid
The end of plate hole 2 is connected and the second pressure head 2-4 and the second cover plate 2-2 is placed in the end of the second cover board hole 4
Portion is connected, so under the effect of the pressure, and the first cover plate 2-1 can apply active force to the first pressure head 2-3,
So that the first pressure head 2-3 is as the first cover plate 2-1 is together towards the direction motion close to pressure head hole 3 until the
One pressure head 2-3 is placed in pressure head hole 3, similarly, and the second pressure head 2-4 can be pressed with the second cover plate 2-1 directions
The direction motion of head bore 3 is until the second pressure head 2-4 is placed in pressure head hole 3, and the first pressure head 2-3 and second is pressed
There is the gap reacted for powder body material in end relative head 2-4, when the first pressure head 2-3 and second is pressed
After head 2-4 motions in place, now the first cover plate 2-1 is placed in the first cover board hole 2, and the second cover plate 2-2 is put
In in the second cover board hole 4, due to being deposited between the first cover plate 2-1 periphery wall and the cavity wall of the first cover board hole 2
In the gap for filling graphite paper, graphite paper is filled in the gap, such graphite paper and the first cover plate
The cavity wall of 2-1 periphery wall and the first cover board hole 2 fits；Second cover plate 2-2 periphery wall and second
There is the gap for being used for filling graphite paper between the cavity wall of cover board hole 4, graphite paper is filled in this gap,
The cavity wall of graphite paper and the second cover plate 2-7 walls and the second cover board hole 4 fits, and can so ensure
One cover plate 2-1 plays a part of closing the first cover board hole 2, and the second cover plate 2-2 plays the second cover board hole of closing
4 effect, so as to avoid gas from escaping, it is ensured that the adequacy of sintering reaction.
It should be noted that because the first cover plate 2-1 can be under the effect of the pressure along the first cover board hole 2
Motion, the second cover plate 2-2 can equally be moved along the second cover board hole 4, therefore, in order to ensure the first cover plate
2-1 plays a part of closing the first cover board hole 2, ends and first of the first cover plate 2-1 away from pressure head hole 3
It is interference fit between cover board hole 2, similarly, ends of the second cover plate 2-2 away from pressure head hole 3 and the second lid
End between plate hole 4 is interference fit, can so ensure the sealing of mould, prevent gas from escaping,
So as to ensure the adequacy of sintering reaction.Certainly, also it is not excluded for using other set-up modes, such as first
Cover plate and the second cover plate can also be configured by using tapered mode, and such as the first cover plate is along remote
The end in pressure head hole to the end close to pressure head hole is set by the way of tapered, so when the first cover plate edge
When the motion of the first cover board hole, it is to be exercised in place after, end of first cover plate away from pressure head hole will be with the
One cover board hole clamping, can so realize the purpose of first the first cover board hole of cover closure, similarly the second lid
Plate plays a part of closing the second cover board hole.
It should also be noted that, the first cover plate 2-1 and the first pressure head 2-3 total length and the second cover plate
2-2 and the second pressure head 2-4 total length need to be selected according to specific reaction-sintered so that the first lid
Plate 2-1 and the first pressure head 2-3, the second cover plate 2-2 and the second pressure head 2-4 disclosure satisfy that demand, while just
In taking out in the first cover board hole 2 the first cover plate 2-1 together with the first pressure head 2-3 after question response terminates, together
Reason is easy to together with the second pressure head 2-4 take out in the second cover board hole 4 the second cover plate 2-2.
It should be further stated that, after the first pressure head 2-3 and the second pressure head 2-4 motions are, the first lid
Ends of the plate 2-1 away from pressure head hole 3 is all placed in the first cover board hole 2 or the first cover plate 2-1 is away from pressure head
The end in hole 3 is exposed to the openend of the first cover board hole 2, and similarly, the second cover plate 2-2 is away from pressure head hole 3
End be placed in the second cover board hole 4 or the second ends of the cover plate 2-2 away from pressure head hole 3 is exposed to the second lid
The openend of plate hole 4.
The embodiment of each in this specification is described by the way of progressive, and each embodiment is stressed
Be between the difference with other embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use
The present invention.A variety of modifications to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the most wide scope consistent with features of novelty with principles disclosed herein.
Claims (6)
1. a kind of mould for pressure sintering, the mould includes main part and pressure head, it is characterised in that
The pressure head includes the first pressure head and the second pressure head, and the mould also includes the first cover plate and the second cover plate,
Wherein, first cover plate is connected with first pressure head, second cover plate and second pressure head
It is connected；
The main part includes interconnected the first cover board hole, the second cover board hole and pressure head hole, and described the
One cover board hole and second cover board hole are located at two ends on the axial direction of the pressure head hole respectively, and
The aperture of first cover board hole and the aperture of second cover board hole are all higher than the hole in the pressure head hole
Footpath；Wherein, first cover board hole is used to accommodate first cover plate, and second cover board hole is used to hold
Receive second cover plate, the pressure head hole is used to accommodate first pressure head and second pressure head；
There is gap between the bottom of first cover plate and first cover board hole, second cover plate with
There is gap between the bottom of second cover board hole.
2. mould as claimed in claim 1, it is characterised in that first cover plate is placed in described first
There is the gap for being used for filling graphite paper between the end of cover board hole and first cover board hole；
Second cover plate is placed in exist between the end of second cover board hole and second cover board hole and used
In the gap of filling graphite paper；
Between first pressure head and the pressure head hole and between second pressure head and the pressure head hole
In the presence of the gap for filling graphite paper.
3. mould as claimed in claim 2, it is characterised in that first cover plate and second lid
Plate includes first end and the second end, and the diameter of the first end is more than the diameter at second end, first
Second end of cover plate be used for be placed in first cover board hole, and the second end of first cover plate with it is described
There is gap between the bottom of first cover board hole, the first end of first cover plate and first cover plate
The step surface that second end is formed is used to abut against with the main part；
Second end of second cover plate is used to be placed in second cover board hole, and second cover plate
There is gap, the first end of second cover plate and institute between second end and the bottom of second cover board hole
Stating the step surface that the second end of the second cover plate formed is used to abut against with the main part；
First cover plate is provided with the first mounting hole, first pressure head through first mounting hole and
One end of first pressure head is placed in the pressure head hole, the other end of first pressure head and described first
Mounting hole phase clamping；Second cover plate is provided with the second mounting hole, and second pressure head is through described the
One end of two mounting holes and second pressure head is placed in the pressure head hole, the other end of second pressure head
With the second mounting hole phase clamping.
4. mould as claimed in claim 2, it is characterised in that first pressure head and the described first lid
The end that plate is placed in first cover board hole is connected, and second pressure head is placed in institute with second cover plate
The end for stating the second cover board hole is connected；The chamber of the periphery wall of first cover plate and first cover board hole
There is the gap for being used for filling graphite paper, the periphery wall of second cover plate and second cover plate between wall
There is the gap for being used for filling graphite paper between the cavity wall in hole.
5. the mould as described in any one of Claims 1-4, it is characterised in that the main part is also set
Perforate is equipped with, radial direction of the perforate along the main part is opened up.
6. mould as claimed in claim 5, it is characterised in that the main part is high-density graphite master
Body portion, first cover plate is the cover plate of graphite first, and second cover plate is the cover plate of graphite second, described
First pressure head is the pressure head of graphite first, and second pressure head is the pressure head of graphite second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222540.3A CN107282927B (en) | 2016-04-12 | 2016-04-12 | A kind of mold for pressure sintering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222540.3A CN107282927B (en) | 2016-04-12 | 2016-04-12 | A kind of mold for pressure sintering |
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| CN107282927A true CN107282927A (en) | 2017-10-24 |
| CN107282927B CN107282927B (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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|---|---|---|---|---|
| EP1027946A2 (en) * | 1999-02-12 | 2000-08-16 | Kubota Corporation | Method for electric sintering and mold for use in the method |
| CN102390079A (en) * | 2011-09-26 | 2012-03-28 | 西安交通大学 | High-pressure sintering combined die and high-pressure rapid sintering method for preparing nanometer ceramic thereof |
| WO2012089105A1 (en) * | 2010-12-28 | 2012-07-05 | 联合非晶材料有限公司 | Spark plasma sintering device and method |
| CN202571280U (en) * | 2012-04-12 | 2012-12-05 | 北京工业大学 | Mould for discharge plasma sintering equipment |
| CN203710985U (en) * | 2013-12-24 | 2014-07-16 | 中国科学院上海硅酸盐研究所 | High-pressure mold |
| CN204159877U (en) * | 2014-09-04 | 2015-02-18 | 中国科学院上海光学精密机械研究所 | Hot pressed sintering assembling die |
-
2016
- 2016-04-12 CN CN201610222540.3A patent/CN107282927B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1027946A2 (en) * | 1999-02-12 | 2000-08-16 | Kubota Corporation | Method for electric sintering and mold for use in the method |
| WO2012089105A1 (en) * | 2010-12-28 | 2012-07-05 | 联合非晶材料有限公司 | Spark plasma sintering device and method |
| CN102390079A (en) * | 2011-09-26 | 2012-03-28 | 西安交通大学 | High-pressure sintering combined die and high-pressure rapid sintering method for preparing nanometer ceramic thereof |
| CN202571280U (en) * | 2012-04-12 | 2012-12-05 | 北京工业大学 | Mould for discharge plasma sintering equipment |
| CN203710985U (en) * | 2013-12-24 | 2014-07-16 | 中国科学院上海硅酸盐研究所 | High-pressure mold |
| CN204159877U (en) * | 2014-09-04 | 2015-02-18 | 中国科学院上海光学精密机械研究所 | Hot pressed sintering assembling die |
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| Publication number | Publication date |
|---|---|
| CN107282927B (en) | 2019-09-06 |
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Effective date of registration: 20221018 Address after: 313000 No.66, Jiayang Road, Balidian Town, Wuxing District, Huzhou City, Zhejiang Province Patentee after: ZHEJIANG CHENHUA TECHNOLOGY CO.,LTD. Address before: 570228 Hainan University, 58 Renmin Avenue, Hainan, Haikou Patentee before: HAINAN University |