CN107282927B - A kind of mold for pressure sintering - Google Patents
A kind of mold for pressure sintering Download PDFInfo
- Publication number
- CN107282927B CN107282927B CN201610222540.3A CN201610222540A CN107282927B CN 107282927 B CN107282927 B CN 107282927B CN 201610222540 A CN201610222540 A CN 201610222540A CN 107282927 B CN107282927 B CN 107282927B
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- cover board
- hole
- pressure head
- main part
- pressure
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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 mold for pressure sintering, including main part and pressure head, pressure head includes the first pressure head and the second pressure head, and mold further includes the first cover board and the second cover board, and the first cover board and the first pressure head are connected, and the second cover board and the second pressure head are connected；Main part includes the first interconnected 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, the aperture of first cover board hole and the aperture of the second cover board hole are all larger than the aperture in pressure head hole, first cover board hole is for accommodating the first cover board, second cover board hole is for accommodating the second cover board, and pressure head hole is for accommodating the first pressure head and the second pressure head；There are gaps between first cover board and the bottom end of the first cover board hole, and there are gaps between the second cover board and the bottom end of the second cover board hole.So set, can reduce the loss of gaseous substance during high temperature pressure reaction-sintered, sintering reaction is sufficiently completed, ideal powdered metallurgical material product is obtained.
Description
Technical field
The present invention relates to technical field of powder metallurgy material preparation, more particularly to a kind of mold for pressure sintering.
Background technique
It is most of to need to pass through the powder of different material in the case where pressurization in powdered metallurgical material preparation process
It is sintered at high temperature into product.
It under normal conditions, mainly include main part 01 and two cylindrical crimps 03 for the mold of pressure sintering, wherein
Main part 01 is provided with the circular cylindrical cavity 02 for accommodating pressure head.Before preparation, need one of cylindrical crimp 03
It is placed in circular cylindrical cavity 02, then powder body material is placed in circular cylindrical cavity 02, finally again press another cylinder
First 03 is put into circular cylindrical cavity 02, and two cylindrical crimps 03 are oppositely arranged, so that powder body material is placed in two cylindrical pressures
Between first 03, as shown in Figure 1.In carrying out high-temperature sintering process, axial compressive force is transferred to by two cylindrical crimps 03 and is set
Powder body material in circular cylindrical cavity 02, powder body material are finally sintered into cylinder under the double action of high moderate pressure
Shape block materials product.
The normal pressures sintering that above-mentioned mold is primarily adapted for use in one or more solid materials is either joined without gaseous substance
With the pressure reaction-sintered of chemical reaction, due to needing that cylindrical crimp 03 is put into circular cylindrical cavity 02, for the ease of putting
Enter cylindrical crimp 03, there are certain gaps between cylindrical crimp 03 and the cavity wall of circular cylindrical cavity 02, for there is gas phase
The reaction-sintered for having gas to discharge in the reaction-sintered or sintering process that substance participates in, under the action of axial high pressure, gas holds
Easily by the gap discharge between cylindrical crimp 03 and the cavity wall of circular cylindrical cavity 02, so as to cause the gas for participating in reaction-sintered
Phase wretched insufficiency causes chemical reaction during pressure sintering to be not thorough, and is finally difficult to obtain by pressure reaction-sintered ideal
Powder metallurgy block materials product.
Summary of the invention
In view of this, the purpose of the application is to provide a kind of mold for pressure sintering, it is anti-to can reduce high temperature pressure
The loss of gaseous substance in sintering process, sufficiently completion sintering reaction are answered, ideal powder metallurgy block materials product is obtained.
This application provides a kind of mold for pressure sintering, the mold includes main part and pressure head, the pressure head
Including the first pressure head and the second pressure head, the mold further includes the first cover board and the second cover board, wherein first cover board and institute
It states the first pressure head to be connected, second cover board is connected with second pressure head；The main part includes interconnected
One cover board hole, the second cover board hole and pressure head hole, first cover board hole and second cover board hole are located at the pressure head hole
Two ends on axial direction, and the aperture of first cover board hole and the aperture of second cover board hole be all larger than it is described
The aperture in pressure head hole；Wherein, first cover board hole is for accommodating first cover board, and second cover board hole is for accommodating institute
The second cover board is stated, the pressure head hole is for accommodating first pressure head and second pressure head；
First cover board and second cover board include first end and second end, and the diameter of the first end is greater than institute
The diameter of second end is stated, the second end of the first cover board is for being placed in first cover board hole, and the second of first cover board
There are gap between end and the bottom end of first cover board hole, the second of the first end of first cover board and first cover board
End is formed by step surface for abutting against with the main part；
The second end of second cover board for being placed in second cover board hole, and the second end of second cover board with
There are gap, the second end institutes of the first end of second cover board and second cover board between the bottom end of second cover board hole
The step surface of formation with the main part for abutting against；
First cover board is provided with the first mounting hole, and first pressure head runs through first mounting hole and described first
One end of pressure head is placed in the pressure head hole, and the other end of first pressure head is mutually clamped with first mounting hole；Described
Two cover boards are provided with the second mounting hole, and second pressure head is placed in through one end of second mounting hole and second pressure head
In the pressure head hole, the other end of second pressure head is mutually clamped with second mounting hole.
Preferably, first cover board is placed in exist between the end of first cover board hole and first cover board hole and use
In the gap of filled graphite paper；Second cover board is placed between the end of second cover board hole and second cover board hole and deposits
In the gap for filled graphite paper；Between first pressure head and the pressure head hole and second pressure head and the pressure head
There is the gap for being used for filled graphite paper between hole.
Preferably, the main part is additionally provided with aperture, and the aperture is opened up along the radial direction of the main part.
Preferably, the main part is high-density graphite main part, and first cover board is the first cover board of graphite, described the
Two cover boards are the second cover board of graphite, and first pressure head is the first pressure head of graphite, and second pressure head is the second pressure head of graphite.
A kind of mold for pressure sintering provided herein, mold include main part and pressure head, and pressure head includes the
One pressure head and the second pressure head, mold further include the first cover board and the second cover board, wherein and the first cover board and the first pressure head are connected,
Second cover board and the second pressure head are connected；Main part includes the first interconnected cover board hole, the second cover board hole and pressure head hole, and
One cover board hole and the second cover board hole are located at two ends on the axial direction of pressure head hole, the aperture of the first cover board hole and
The aperture of two cover board holes is all larger than the aperture in pressure head hole.Wherein, the first cover board hole is used for accommodating the first cover board, the second cover board hole
In accommodating the second cover board, pressure head hole is for accommodating the first pressure head and the second pressure head；The bottom end of first cover board and the first cover board hole it
Between there are gaps, there are gaps between the second cover board and the bottom end of the second cover board hole.So set, carrying out high temperature pressure sintering
When, for there is the reaction-sintered for having gas to generate in the reaction-sintered of gaseous substance participation or reaction process, gas is in high pressure
Under the action of, even if being escaped via the gap between the first pressure head and the second pressure head and pressure head hole, due to the first cover board and second
Cover board is respectively placed in the first cover board hole and the second cover board hole, and the first cover board and the second cover board play the role of closing cap plate hole,
Escaping gas can be concentrated in the gap between the first cover board and the first cover board hole and the second cover board and the second cover board hole it
Between gap in, so reaction system can be extruded to avoid gas, so as to avoid occurring gas phase during reaction-sintered
It is insufficient to happen, it can reduce the loss that gas phase is reacted in sintering process, sufficiently completion sintering reaction, to obtain ideal
Sintering material product.
Compared with prior art, by the first cover board hole of setting and the second cover board hole, and the first cover board is placed in the first lid
In plate hole, the first cover board plays the role of closing the first cover board hole, and similarly the second cover board is put into the second cover board hole, the second lid
Plate plays the role of closing the second cover board hole, in this way, the gas phase of reaction is participated in during can making high temperature pressure reaction-sintered
The gap of substance or the air accumulation generated during high temperature pressure reaction-sintered between the first cover board and the first cover board hole
In interior and gap between the second cover board and the second cover board hole, so as to avoid gas phase deficiency occur during reaction-sintered
The case where occur, can reduce in sintering process react gas phase loss, sufficiently completion sintering reaction, to preferably be burnt
Tie material product.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for being used for the mold of pressure sintering in the prior art；
Fig. 2 is the structural representation in specific embodiment provided herein for the main part of the mold of pressure sintering
Figure；
Fig. 3 is the schematic diagram of the top view of main part shown in Fig. 2；
Fig. 4 is the structural schematic diagram of the first cover board in embodiment one provided herein；
Fig. 5 is the schematic diagram of the top view of the first cover board shown in Fig. 4；
Fig. 6 is that the main part in specific embodiment provided herein is mutually filled with cover board provided in embodiment one
Structural schematic diagram after matching；
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, aperture 5, the first cover board 1-6, the first cover board
First end 1-6a, the second end 1-6b of the first cover board, the first mounting hole 1-6c, the second cover board 1-7, the first pressure head 1-8, the second pressure
Head 1-9；
Specific embodiment
The invention discloses a kind of molds for pressure sintering, can reduce gas phase during high temperature pressure reaction-sintered
The loss of substance, sufficiently completion sintering reaction, obtain ideal powder metallurgy block materials product.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It in this embodiment, include main part 1 and pressure head for the mold of pressure sintering, wherein pressure head two
A, respectively the first pressure head and the second pressure head, mold further includes the first cover board and the second cover board, the first cover board and the first pressure head phase
Connection, the second pressure head and the second cover board are connected；Main part 1 includes the first interconnected cover board hole 2,4 and of the second cover board hole
Pressure head hole 3, the first cover board hole 2 and the second cover board hole 4 are located at two ends on 3 axial direction of pressure head hole, the first cover board
The aperture in hole 2 and the aperture of the second cover board hole 4 are all larger than the aperture in pressure head hole 3.Wherein the first cover board hole 2 is for accommodating first
Cover board, the second cover board hole 4 is for accommodating the second cover board, and pressure head hole 3 is for accommodating the first pressure head and the second pressure head；First cover board with
There are gaps between the bottom end of first cover board hole 2, and there are gaps between the second cover board and the bottom end of the second cover board hole 4, please refer to
Fig. 2 to Fig. 3.
So set, the first pressure head and the first cover board are first respectively put into pressure head hole 3 and first when carrying out pressure sintering
In cover board hole 2, then the powder body material being sintered will be needed to be placed on end of first pressure head towards the second pressure head, then by second
Pressure head and the second cover board are respectively put into pressure head hole 3 and the second cover board hole 4, at this point, the first pressure head and the second pressure head are oppositely arranged
And first pressure head be placed in the end in pressure head hole 3 and the second pressure head is placed between the end in pressure head hole 3 that there are certain gap, powders
Material is in the gap placed therebetween.There is intermediate gas for having in the reaction-sintered of gas phase participation or reaction process
The reaction-sintered of release, gas is under the action of high pressure, even if via the sky between the first pressure head and the second pressure head and pressure head hole 3
Gap evolution, since the first cover board and the second cover board are respectively placed in the first cover board hole 2 and the second cover board hole 4, the first cover board and the
Two cover boards play the role of closing cap plate hole, and escaping gas can be concentrated in the gap between the first cover board and the first cover board hole 2
In gap between interior and the second cover board and the second cover board hole 4, so it can be extruded reaction system to avoid gas, so as to
Gas phase is insufficient to be happened to avoid occurring during reaction-sintered, can reduce the loss that gas phase is reacted in sintering process,
Sintering reaction is sufficiently completed, to obtain ideal sintering material product.
Compared with prior art, by the first cover board hole 2 of setting and the second cover board hole 4, and the first cover board is placed in first
In cover board hole 2, the first cover board plays the role of closing the first cover board hole 2, so that the first cover board and the first cover board hole 2 are formed and closed
Cavity, similarly the second cover board is put into the second cover board hole 4, the second cover board play the role of close the second cover board hole 4 so that
Second cover board and the second cover board hole 4 form closed cavity, in this way, participating in during can making high temperature pressure reaction-sintered anti-
The gaseous substance answered or the air accumulation generated during high temperature pressure reaction-sintered in the first cover board and the first cover board hole 2 it
Between gap in and the gap between the second cover board and the second cover board hole 4 in, so as to avoid going out during reaction-sintered
Now gas phase is insufficient happens, and can reduce the loss that gas phase is reacted in sintering process, sufficiently completion sintering reaction, thus
To ideal sintering material product.
It should be noted that in this embodiment, to the life again of two pressure heads, two cover boards and cover board hole
Name, only to facilitate description, is named as the first pressure head for one of pressure head, then another pressure head is the second pressure head, similarly,
The cover board being connected with the first pressure head is the first cover board, and the cover board hole for accommodating the first cover board is the first cover board hole 2, with the second pressure head
The cover board being connected is the second cover board, and the cover board hole for accommodating the second cover board is the second cover board hole 4, furthermore for ease of description, with
It is first put into the explanation carried out for the first cover board and the first pressure head, cannot function as the foundation for limiting protection scope.
It should also be noted that, in this embodiment, the cross section of the first cover board hole 2, the second cover board hole 4 cross
The cross section in section and pressure head hole 3 is circular cross section, wherein the radius of the cross section of the first cover board hole 2 and the second lid
The radius of the cross section of plate hole 4 is all larger than the radius of the cross section in pressure head hole 3, and the bottom end of the first cover board hole 2 and the second cover board
The bottom end in hole 4 is connected with two ends on 3 axial direction of pressure head hole respectively, so, it is ensured that the first pressure head passes through the
The bottom end of one cover board hole 2 is placed in pressure head hole 3, and the bottom end that the second pressure head passes through the second pressure head hole 3 is placed in pressure head hole 3, and
Play the role of closing the first cover board hole 2 after the first cover board is placed in the first cover board hole 2, meanwhile, when the second cover board is placed in the
Play the role of closing the second cover board hole 4 after in two cover board holes 4.Certainly, it is also not excluded for according to actual use demand, by pressure head
Hole and cover board hole are set as other shapes.
It should be further noted that the mold provided by this embodiment for pressure sintering is carrying out
When sintering reaction, pressure range is 0 to 100MPa.
It needs to further explain, in this embodiment, for the first cover board in the mold of pressure sintering
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, it is also necessary to place graphite paper, therefore, the first cover board is placed in the first cover board hole 2
End diameter less than the diameter of the first cover board hole 2, and the difference of the two is in the range of 0.2mm to 0.5mm so that
The gap for being used for filled graphite paper is formed between first cover board and the first cover board hole 2；Second cover board is placed in the end of the second cover board hole 4
The diameter in portion is less than the diameter of the second cover board hole 4, and the difference of the two is in the range of 0.2mm to 0.5mm, so that second
The gap for being used for filled graphite paper is formed between cover board and the second cover board hole 4；The diameter of the diameter of first pressure head and the second pressure head
The respectively less than diameter in pressure head hole 3, and the diameter of the difference of the diameter in the diameter of the first pressure head and pressure head hole 3 and the second pressure head with
The difference of the diameter in pressure head hole 3 in the range of 0.2mm to 0.5mm, in this way, make between the first pressure head and pressure head hole 3 with
And second form the gap for being used for filled graphite paper between pressure head and pressure head hole 3.
In this way, corresponding graphite paper is placed in advance in pressure head hole 3, and graphite paper and the cavity wall in pressure head hole 3 are affixed
Close, be put into pressure head hole 3 graphite paper be filled in the gap between the first pressure head and pressure head hole 3 in and be filled in the second pressure head and
In gap between pressure head hole 3, similarly, then corresponding graphite paper is respectively put into the first cover board hole 2 and the second cover board hole 4,
So that the cavity wall for being put into the graphite paper and the first cover board hole 2 of the first cover board hole 2 fits, it is put into the graphite paper of the second cover board hole 4
It fits with the cavity wall of the second cover board hole 4, the graphite paper for being put into the first cover board hole 2 is filled in the first cover board and is placed in the first cover board hole
In gap between 2 end and the first cover board hole 2, it is put into the cavity wall phase of the graphite paper and the second cover board hole 4 of the second cover board hole 4
Fitting, the graphite paper for being put into the second cover board hole 4 are filled in end and the second cover board hole 4 that the second cover board is placed in the second cover board hole 4
Between gap in.In this way, correspondence ought be respectively put into for the first pressure head, the second pressure head, the first cover board and the second cover board respectively
Accommodating chamber when, guarantee the graphite paper for being put into pressure head hole 3 and the wall surface of the first pressure head, the wall surface of the second pressure head and pressure head hole 3
Cavity wall fit, the cavity wall of the graphite paper being put into the first cover board hole 2 and the first cover board and the first cover board hole 2 fits, and puts
The cavity wall for entering graphite paper and the second cover board and the second cover board hole 4 in the second cover board hole 4 fits, thereby may be ensured that pressure head with
Compactness between pressure head hole 3, compactness and the second cover board and the second cover board hole between the first cover board and the first cover board hole 2
Compactness between 4 avoids going out during reaction-sintered so as to further avoid the evolution of gas during sintering reaction
Now gas phase is insufficient happens, to obtain ideal sintering material product.
It should be noted that in this embodiment, according between pressure head and pressure head hole 3 difference and cover board with
The graphite paper of difference selection respective thickness between cover board hole, can so guarantee the leakproofness and compactness of mold.
In further embodiment, main part 1 is additionally provided with aperture, and aperture is opened up along the radial direction of main part 1, such as
This, aperture can be used to install thermoelectricity occasionally using aperture as the through-hole of IR pointer, in order to which staff is to reaction-sintered
Relevant operation is carried out, guarantees going on smoothly for sintering.
It should be noted that in this embodiment, the gap institute between aperture and the first pressure head and the second pressure head
It aligns in position or the axis of aperture and main part 1 is laterally on (laterally referring to the direction perpendicular with the axial direction of main part 1)
Center line coincide, and the specific depth of aperture is set according to the actual situation under the premise of aperture and disconnected pressure head hole
It is fixed.
It should also be noted that, the setting number of aperture is set also according to specific service condition.
In addition, in this embodiment, mold is graphite jig, i.e., main part 1 is graphite body portion, the first cover board
For the first cover board of graphite, the second cover board is the second cover board of graphite, and the first pressure head is the first pressure head of graphite, and the second pressure head is graphite the
Two pressure heads.Certainly, also it is not excluded for the mold using other chemical property stabilizing materials.
Hereinbefore, mainly the set-up mode of mold is described in detail, will hereinafter introduces two kinds of cover boards
Set-up mode between pressure head, detailed in Example one and embodiment two.
Embodiment one
Please refer to fig. 4 to fig. 6, wherein Fig. 4 and Fig. 5 is the schematic diagram of the first cover board, the first cover board and the second cover board
Set-up mode is similar, and the setting direction of the second cover board specifically please refers to Fig. 4 to Fig. 5.
In the present embodiment, the first cover board 1-6 and the second cover board 1-7 includes first end and second end, first end it is straight
Diameter is greater than the diameter of second end, and the second end 1-6b of the first cover board is for being placed in the first cover board hole 2, and the second of the first cover board
There are gap, the first end 1-6a of the first cover board and the second ends of the first cover board between end 1-6b and the bottom end of the first cover board hole 2
1-6b is formed by step surface for abutting against with main part 1；
The second end of second cover board 1-7 is for being placed in the second cover board hole 4, and the second end and second of the second cover board 1-7
There are gap between the bottom end of cover board hole 4, the second end of the first end of the second cover board 1-7 and the second cover board 1-7 are formed by platform
Terrace with main part 1 for abutting against；
First cover board 1-6 is provided with the first mounting hole 1-6c, the first pressure head 1-8 through the first mounting hole 1-6c and the first pressure
One end of head 1-8 is placed in pressure head hole 3, and the other end of the first pressure head 1-8 is clamped with the first mounting hole 1-6c phase；Second cover board 1-
7 are provided with the second mounting hole, and the second pressure head 1-9 is placed in pressure head hole 3 through one end of the second mounting hole and the second pressure head 1-9,
The other end of second pressure head 1-9 is mutually clamped with the second mounting hole.
So set, the first end 1-6a of the first cover board and the second end 1-6b of the first cover board are formed by step surface and master
Body portion 1 abuts against, and the second end of the first end of the second cover board 1-7 and the second cover board 1-7 are formed by step surface and 1 phase of main part
It abuts, so, it is ensured that the first cover board 1-6 and the second cover board 1-7 play the role of closing cap plate hole, improve the sealing of mold
Property, and then can be escaped to avoid gas, it thereby may be ensured that sintering reaction sufficiently carries out, obtain ideal sintered products.Similarly,
End of the first pressure head 1-8 far from pressure head hole 3 is clamped with the first mounting hole 1-6c phase, the second end of the pressure head 1-9 far from pressure head hole 3
Portion is mutually clamped with the second mounting hole, can so guarantee the compactness connected between the first pressure head 1-8 and the first cover board 1-6, the
The compactness connected between two pressure head 1-7 and the second cover board 1-9, so as to further avoid gas via mounting hole and pressure head
Between gap evolution, may further ensure that the adequacy of sintering reaction.
It should be noted that in this embodiment, in order to realize the clamping between pressure head and cover board, the first pressure head 1-
8 ends far from pressure head hole 3 and the connection between the first mounting hole 1-6c are interference connection, and the second pressure head 1-9 is far from pressure head hole 3
End and the second mounting hole between connection be that interference connects, in this way, being set far from the end in pressure head hole 3 as the first pressure head 1-8
When in the first mounting hole 1-6c or with the first mounting hole 1-6c flush, the first end-enclosed of the pressure head 1-8 far from pressure head hole 3
First mounting hole 1-6c, thereby may be ensured that the leakproofness of mold, and similarly, the second pressure head 1-9 equally plays the second installation of closing
The effect in hole guarantees the leakproofness of mold.Certainly, it is also not excluded for using other set-up modes the first pressure head and second being pressed
Head closes corresponding mounting hole.
It should be further noted that pressure needs to be transferred to pressure head by pressure head due in the actual production process
In hole 3, under the effect of the pressure, pressure head can be moved along the direction in mounting hole towards or away from pressure head hole 3, therefore, carried out
When sintering reaction, carried out to the pressure head of suitable length using to guarantee pressure head far from pressure head hole 3 according to practical situation chosen axis
End can be mutually clamped with mounting hole, thus play the role of close mounting hole, certainly, the axis of the first pressure head and the second pressure head
It can be the same or different to length, selected with specific reference to actual demand.
It should also be noted that, in this embodiment, the second end 1-6b of the first cover board is for being placed in the first cover board
In hole 2, the second end of the second cover board 1-7 is for being placed in the second cover board hole 4, therefore, the cross of the second end 1-6b of the first cover board
The diameter in section less than the cross section of the first cover board hole 2 diameter and difference between the two 0.2mm to 0.5mm range
It is interior, the diameter and between the two of the diameter of the cross section of the second end of the second cover board 1-7 less than the cross section of the second cover board hole 4
Difference is in the range of 0.2mm to 0.5mm.And when being sintered reaction, the second end 1-6b of graphite paper and the first cover board
Wall surface and the cavity wall of the first cover board hole 2 fit, the wall surface of the second end of graphite paper and the second cover board 1-7 and the second lid
The cavity wall of plate hole 4 fits.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (2)
1. a kind of mold for pressure sintering, the mold include main part and pressure head, which is characterized in that the pressure head includes
First pressure head and the second pressure head, the mold further include the first cover board and the second cover board, wherein first cover board and described
One pressure head is connected, and second cover board is connected with second pressure head；
The main part includes the first interconnected cover board hole, the second cover board hole and pressure head hole, first cover board hole and institute
State two ends that the second cover board hole is located on the axial direction of the pressure head hole, and the aperture of first cover board hole and
The aperture of second cover board hole is all larger than the aperture in the pressure head hole；Wherein, first cover board hole is for accommodating described the
One cover board, second cover board hole is for accommodating second cover board, and the pressure head hole is for accommodating first pressure head and institute
State the second pressure head；
First cover board and second cover board include first end and second end, and the diameter of the first end is greater than described the
The diameter at two ends, the second end of the first cover board for being placed in first cover board hole, and the second end of first cover board with
There are gap, the second end institutes of the first end of first cover board and first cover board between the bottom end of first cover board hole
The step surface of formation with the main part for abutting against；
The second end of second cover board for being placed in second cover board hole, and the second end of second cover board with it is described
There are gap between the bottom end of second cover board hole, the second end of the first end of second cover board and second cover board is formed
Step surface for being abutted against with the main part；
First cover board is provided with the first mounting hole, and first pressure head runs through first mounting hole and first pressure head
One end be placed in the pressure head hole, the other end of first pressure head is mutually clamped with first mounting hole；Second lid
Plate is provided with the second mounting hole, and second pressure head is placed in described through one end of second mounting hole and second pressure head
In pressure head hole, the other end of second pressure head is mutually clamped with second mounting hole；
First cover board, which is placed between the end of first cover board hole and first cover board hole, to be existed for filled graphite
The gap of paper；
Second cover board, which is placed between the end of second cover board hole and second cover board hole, to be existed for filled graphite
The gap of paper；
Exist for filling out between first pressure head and the pressure head hole and between second pressure head and the pressure head hole
Fill the gap of graphite paper；
The main part is high-density graphite main part, and first cover board is the first cover board of graphite, and second cover board is stone
Black second cover board, first pressure head are the first pressure head of graphite, and second pressure head is the second pressure head of graphite.
2. mold as described in claim 1, which is characterized in that the main part is additionally provided with aperture, and the aperture is along institute
The radial direction for stating main part opens up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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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 |
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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 |
| 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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| CN107282927A (en) | 2017-10-24 |
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