CN214392341U

CN214392341U - Gradual change pressure head adapter assembly for SPS sintering and gradual change pressing device

Info

Publication number: CN214392341U
Application number: CN202120505552.3U
Authority: CN
Inventors: 朱培源; 李尘宇; 鞠弈秋; 潘韵璇; 陈彪; 曹遴; 刘明忠
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-15
Anticipated expiration: 2031-03-10

Abstract

The application discloses gradual change pressure head crossover sub subassembly and gradual change closing device for SPS sintering, wherein the crossover sub subassembly includes first crossover sub, second crossover sub and third crossover sub, first crossover sub includes joint portion and splenium down on the first, joint portion and lower connecting portion are gone up including the second to the second crossover sub, set up first draw-in groove on the gradual change pressure head, first go up joint portion with joint portion all is used for the joint to assemble in the second in the first draw-in groove, set up the second draw-in groove on the lower connecting portion, third crossover sub upper end is used for the joint to assemble in the second draw-in groove, third crossover sub lower extreme extends to connecting portion below position down. The method and the device can reduce the cost of consumables in the SPS sintering sample process and improve the assembly effect. The problem of because of the gradual change pressure head and the mould size mismatching arouse that the atress is inhomogeneous, and then lead to sintered piece performance defect is avoided.

Description

Gradual change pressure head adapter assembly for SPS sintering and gradual change pressing device

Technical Field

The utility model belongs to the technical field of powder metallurgy, especially, relate to a gradual change pressure head crossover sub subassembly and gradual change closing device for SPS sintering.

Background

The spark plasma sintering SPS is a common sintering forming technology, has the characteristics of fast temperature rise, short sintering time, controllable structural organization, environmental protection, energy conservation and the like compared with other forming methods, can be used for preparing metal materials, ceramic materials and composite materials, and can also be used for preparing nano block materials, amorphous block materials, gradient materials and the like.

The SPS technique is performed by sintering using discharge plasma, which is a quasi-neutral gas composed of a large number of positively and negatively charged particles and neutral particles and exhibiting collective behavior, and provides a state of high reactivity. The SPS utilizes direct current discharge plasma, pulse current is directly introduced among powder particles for heating and sintering, equipment and a sintered sample are connected and transmitted through a gradual pressure head, and the sintered sample part comprises an upper pressure head, a die filled with powder and a lower pressure head.

The mould that utilizes SPS technique sintering in laboratory usually has different sizes, need adopt not unidimensional supporting gradual change pressure head when sintering unidimensional sample, this is because when carrying out sintering process, when the sample of different diameters is sintered in the suppression of the gradual change pressure head with same diameter, and the difference of size can lead to the atress condition different, makes the sample internal structure and the density that the sintering was come out to have the difference, influences the further experiment to the sample performance. In addition, the gradual change pressure head is size difference only, and the material is all unanimous with the state, just adopts different gradual change pressure heads if different mould sizes, has improved experiment and manufacturing cost undoubtedly.

SUMMERY OF THE UTILITY MODEL

This application is for improving experimental efficiency, and reduce cost realizes accomplishing the assembly of 45mm and 30mm mould sample with diameter 45 mm's gradual change pressure head to reach the effect that a gradual change pressure head can be used for the process of not unidimensional sample sintering, thereby designed a gradual change pressure head crossover sub subassembly and gradual change closing device that is used for SPS sintering.

Specifically, the method is realized by adopting the following technical scheme:

the application provides a gradual change pressure head conversion joint subassembly for SPS sintering, including first crossover sub, second crossover sub and third crossover sub, first crossover sub includes joint portion and splenium down on the first, the second crossover sub includes joint portion and lower connecting portion on the second, set up first draw-in groove on the gradual change pressure head, joint portion on the first with joint portion all is used for the joint assembly to be in on the second in the first draw-in groove, set up the second draw-in groove on the lower connecting portion, third crossover sub upper end is used for the joint assembly to be in the second draw-in groove, the third crossover sub lower extreme extends to connecting portion below position down.

As a further explanation of the present application, the third adapter and the pressing portion are both cylindrical structures, the second slot is a circular groove, and the diameter of the third adapter is smaller than that of the pressing portion.

As a further explanation of the application, the diameter of the third adapter is 30mm, and the diameter of the pressing part is 45 mm.

As a further explanation of the present application, the first upper clamping portion, the second upper clamping portion and the lower connecting portion are all cylindrical structures, and the first clamping groove is a circular groove.

In a second aspect, the present application provides a progressive pressing device for SPS sintering, comprising the adapter assembly of any one of the above and the progressive indenter.

Compared with the prior art, the method has the following beneficial technical effects:

this application adopts gradual change pressure head crossover head, can be according to the size needs of sintered piece in sintering process, provide the ability of phi 30 sample sintering to the gradual change pressure head of phi 45 diameter for the sintering of different size requirements has solved the unmatched problem of sintered piece size simultaneously, optimizes the sintering scheme, improves the performance of sintered piece, and easy operation, easily equipment to reduce the replacement cost, satisfied the requirement of laboratory and production.

The method and the device can reduce the cost of consumables in the SPS sintering sample process and improve the assembly effect. The problem of because of the gradual change pressure head and the mould size mismatching arouse that the atress is inhomogeneous, and then lead to sintered piece performance defect is avoided.

Drawings

FIG. 1 is a top and front view of a first adapter provided herein;

FIG. 2 is a top and front view of a second adapter provided herein;

FIG. 3 is a top and front view of a third adapter provided herein;

FIG. 4 is a front view of a phi 45 size crossover joint as provided herein in use assembled;

FIG. 5 is a front view of the phi 30 size transition joint provided by the present application in use assembled.

Description of reference numerals:

first crossover sub 1, first upper clamping portion 11, lower portion 12, second crossover sub 2, second upper clamping portion 21, lower connecting portion 22, second draw-in groove 23, third crossover sub 3, first draw-in groove 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The technical solution of the present application will be explained with reference to specific embodiments.

Example 1

As shown in fig. 1-5, a gradual change pressure head conversion joint assembly for SPS sintering is provided, including first crossover sub 1, second crossover sub 2 and third crossover sub 3, first crossover sub 1 includes first upper clamping portion 11 and pushes down portion 12, second crossover sub 2 includes second upper clamping portion 21 and lower connecting portion 22, set up first draw-in groove 4 on the gradual change pressure head, first upper clamping portion 11 with second upper clamping portion 21 all is used for the joint assembly in first draw-in groove 4, set up second draw-in groove 23 on the lower connecting portion 22, third crossover sub 3 upper end is used for the joint assembly in second draw-in groove 23, third crossover sub 3 lower extreme extends to connecting portion 22 below position down.

In a preferable mode, the third adapter 3 and the pressing portion 12 are both cylindrical structures, the second locking groove 23 is a circular groove, and the diameter of the third adapter 3 is smaller than the diameter of the pressing portion 12, specifically, the diameter of the third adapter 3 is 30mm, and the diameter of the pressing portion 12 is 45 mm.

In a preferred mode, the first upper clamping portion 11, the second upper clamping portion 21 and the lower connecting portion 22 are all cylindrical structures, and the first clamping groove 4 is a circular groove.

The application provides a gradual change pressure head conversion joint subassembly for SPS sintering, it obtains the gradual change pressure head of 30 diameters to the gradual change pressure head of diameter 45 through installing different conversion heads, this conversion head subassembly has played the ability that a gradual change pressure head has two kinds of size moulds of adaptation, it is inhomogeneous to have solved the gradual change pressure head that exists in the SPS sintering and has not matchd with the mould size and arouse the atress, and then lead to the problem of sintering spare performance defect, and production and manufacturing cost have been reduced.

When the SPS sintering machine is used, according to different sintering piece size requirements, the change of the joint size is realized by assembling the three parts of the first conversion joint 1, the second conversion joint 2 and the third conversion joint 3 and the gradual change pressure head, the experimental error caused by the mismatch of the size of the pressure head can be effectively solved, and the experimental efficiency is improved.

Specifically, when a joint with a diameter of 45 is needed, as shown in fig. 4, the first adapter 1 is assembled and connected with the gradual change pressure head; when a connector with the diameter of 30 is needed, as shown in fig. 5, the second adapter 2 and the third adapter 3 are assembled and connected with the gradual change pressure head.

Example 2

A progressive compaction device for SPS sintering comprising the adapter assembly of example 1 and a progressive indenter of example 1.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A progressive indenter adapter assembly for SPS sintering, comprising: including first crossover sub (1), second crossover sub (2) and third crossover sub (3), first crossover sub (1) includes first last joint portion (11) and pushes down portion (12), second crossover sub (2) includes joint portion (21) and lower connecting portion (22) on the second, set up first draw-in groove (4) on the gradual change pressure head, first last joint portion (11) with joint portion (21) all are used for the joint assembly in the second in first draw-in groove (4), set up second draw-in groove (23) on lower connecting portion (22), third crossover sub (3) upper end is used for the joint assembly to be in second draw-in groove (23), third crossover sub (3) lower extreme extends to connecting portion (22) lower position down.

2. The progressive indenter adapter assembly for SPS sintering of claim 1, wherein: the third adapter (3) and the pressing portion (12) are both of a cylindrical structure, the second clamping groove (23) is a circular groove, and the diameter of the third adapter (3) is smaller than that of the pressing portion (12).

3. The progressive indenter adapter assembly for SPS sintering of claim 2, wherein: the diameter of the third conversion joint (3) is 30mm, and the diameter of the pressing part (12) is 45 mm.

4. The progressive indenter adapter assembly for SPS sintering of claim 1, wherein: joint portion (11) on first, joint portion (21) and connecting portion (22) are the cylinder structure down, first draw-in groove (4) are circular recess.

5. A progressive pressing device for SPS sintering, comprising: comprising the adapter assembly of any of claims 1-4 and the progressive indenter.