CN206588162U

CN206588162U - It is a kind of to prepare the extrusion die for spreading polynary knot

Info

Publication number: CN206588162U
Application number: CN201621266504.9U
Authority: CN
Inventors: 朱劲飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-11-22
Filing date: 2016-11-22
Publication date: 2017-10-27
Anticipated expiration: 2026-11-22

Abstract

The utility model is related to a kind of mould, more particularly to a kind of prepares the extrusion die for spreading polynary knot.This includes external mold, the inner sleeve provided with sample accommodation space, upper capping, lower capping, pressure ram and isolation layer provided with conical through-hole；Inside it is placed in conical through-hole；Inner sleeve upper surface is provided with upper capping；Inner sleeve lower surface is provided with lower capping；And the taper of inner sleeve, upper capping and lower capping is identical with the taper of conical through-hole；Pressure ram moves downward interior be enclosed in conical through-hole by extruding inner sleeve upper surface；Through-hole side wall inner surface, which is provided with, prevents the isolation layer of phase counterdiffusion between external mold and inner sleeve.The utility model is under general laboratory environment, using common extruder and thermal simulation machine, can reach the same three-dimensional squeezing effect of traditional preparation methods.The preparation technology that the extrusion die provided using the utility model prepares the polynary knot of diffusion simply, is easily realized, and it is cheap to prepare finished product.

Description

It is a kind of to prepare the extrusion die for spreading polynary knot

Technical field

The utility model is related to a kind of mould, more particularly to a kind of prepares the extrusion die for spreading polynary knot.

Background technology

The polynary knot of diffusion is made up of the metal derby of different types of three pieces and its above.Metal derby interface is in close contact, And solid solution or interphase are mutually diffuseed to form at high temperature.These can be obtained by the survey tool on micro-scale to consolidate The rule that hardness, modulus of elasticity, thermal conductivity of solution or interphase etc. change with local part, so that construct " composition-structure- Relation between property ".

The polynary knot of diffusion is developed by Ohio State University Zhao Jicheng professors on the basis of diffusion couple.At present, make The standby polynary knot of diffusion needs under vacuum to be welded together diffusion junctions and capping with electron beam, then is made using high temperature insostatic pressing (HIP) By three-dimensional compressive stress plastic deformation, soldering space are occurred for the polynary knot of diffusion.But, general laboratory environment is difficult The condition required by the above method is met, the application for spreading polynary knot is seriously hindered.

Utility model content

The technical problems to be solved in the utility model there is provided a kind of prepare less demanding to laboratory environment and spread The extrusion die of polynary knot.

In order to solve the above-mentioned technical problem, the utility model prepares the extrusion die for spreading polynary knot there is provided a kind of.Should Extrusion die includes：

External mold provided with conical through-hole, the inner sleeve provided with sample accommodation space, upper capping, lower capping, pressure ram and every Exhausted layer；

It is placed in described in the conical through-hole；The inner sleeve upper surface is provided with the upper capping, the upper capping The diameter of lower surface is identical with the diameter of the inner sleeve upper surface；The inner sleeve lower surface be provided with the lower capping, it is described under The diameter for covering upper surface is identical with the diameter of the inner sleeve lower surface；And the inner sleeve, the upper capping and the lower envelope The taper of lid is identical with the taper of the conical through-hole；

The pressure ram moves downward interior be enclosed in the conical through-hole by extruding the inner sleeve upper surface；

The through-hole side wall inner surface, which is provided with, prevents the isolation layer of phase counterdiffusion between the external mold and the inner sleeve.

Preferably, the isolation layer is high-melting-point material.

Preferably, the upper capping, the lower capping and the inner sleeve are that volume fraction is most in the polynary knot of the diffusion Big material.

Preferably, the upper capping, the lower capping and the inner sleeve are different materials, the upper capping, the lower envelope The isolation layer is equipped between lid and the inner sleeve.

Preferably, the pressure ram, the external mold are rigid.

Preferably, the taper of the through hole is 0.03:1~0.2:1.

Preferably, the external mold, the pressure ram are cylinder, the inner sleeve, the upper capping and the lower capping For round platform.

Preferably, the upper surface of the accommodation space is the square put centered on the center of circle of the inner sleeve upper surface.

Preferably, added with lubricant between the external mold and the inner sleeve, to reduce between the external mold and the inner sleeve Coefficient of friction.

Above-mentioned technical proposal of the present utility model has the following advantages that：Under general laboratory environment, using common Extruder and thermal simulation machine, can reach the same three-dimensional squeezing effect of traditional preparation methods.There is provided using the utility model Extrusion die prepare the polynary knot of diffusion preparation technology it is simple, easily realize, and it is cheap to prepare finished product.

Brief description of the drawings

Fig. 1 is the sectional view of the extrusion die for the polynary knot of preparation diffusion that the utility model embodiment is provided；

Fig. 2 is the schematic diagram of the inner sleeve of the extrusion die for the polynary knot of preparation diffusion that the utility model embodiment is provided.

In figure：1：External mold；2：Pressure ram；3：Upper capping；4：Inner sleeve；5：Tantalum foil；6：Lower capping.

Embodiment

Embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following reality Applying example is used to illustrate the utility model, but is not limited to scope of the present utility model.

As shown in figure 1, the sectional view of the extrusion die of the polynary knot of preparation diffusion provided for the utility model embodiment.

The extrusion die for the polynary knot of preparation diffusion that the utility model embodiment is provided includes：External mold provided with conical through-hole 1st, the inner sleeve 4 provided with sample accommodation space, pressure ram 2 and isolation layer；Inner sleeve 4 is placed in conical through-hole, and the taper of inner sleeve 4 It is identical with the taper of conical through-hole；Pressure ram 2 makes inner sleeve 4 be moved downward in conical through-hole by extruding the upper surface of inner sleeve 4；It is logical Hole side wall inner surfaces, which are provided with, prevents the isolation layer of phase counterdiffusion between external mold 1 and inner sleeve 4.

Wherein, in order to prevent the phase counterdiffusion between external mold 1 and inner sleeve 4, and then the polynary knot of the diffusion prepared is caused to contain Unnecessary impurity, therefore whole two side wall inner surfaces of through hole set isolation layer in external mold 1.Metal tantalum has very high molten Point, therefore can prevent external mold 1 from being spread with metal to be processed in high annealing.Isolation layer is high-melting-point material, this implementation The isolation layer of example is not limited thereto by taking tantalum foil 5 as an example, and other have high-melting-point, and can prevent external mold 1 from occurring with inner sleeve 4 The material of diffusion.

Further, inner sleeve 4 is departed from order to prevent sample too small, while preventing interior metal from volatilizing, using envelope up and down Lid seals the upper bottom surface of inner sleeve 4.The upper surface of inner sleeve 4 is provided with upper capping 3, the diameter and the upper table of inner sleeve 4 of 3 lower surfaces of upper capping The diameter in face is identical.The lower surface of inner sleeve 4 is provided with lower capping 6, the diameter of the diameter and the lower surface of inner sleeve 4 of 6 upper surfaces of lower capping It is identical.Contact, can so make with the identical upper and lower surface for covering direct and inner sleeve 4 up and down of the inner via hole taper of external mold 1 Extrude post package tight.Upper capping 3, lower capping 6 should can select identical material with inner sleeve 4, can also select different Material.Needed during from different material between upper capping 3 and inner sleeve 4, lower cover sticks tantalum foil 5 between 6 and inner sleeve 4 To prevent the polynary ligament of diffusion prepared from having other impurities, the thickness covered up and down takes 0.5mm to 5mm.

Further, inner sleeve 4, upper capping 3 and lower capping 6 are the pivot of polynary knot.Inner sleeve 4 is placed in the logical of external mold 1 Identical with the polynary knot of conventional diffusion in hole, the pivot that inner sleeve 4 is typically chosen in the good polynary knot of low intensity, plasticity is used as inner sleeve Material, that is, need to carry out the maximum a kind of material of volume fraction in the different materials of extrusion operation.As shown in Fig. 2 being this reality The schematic diagram of the inner sleeve of the extrusion die of the polynary knot of preparation diffusion provided with new embodiment.Inner sleeve 4 had both played accommodating sample The mould action of metal derby, while being also a metal constituent element in the polynary knot of diffusion to be prepared.

Further, pressure ram 2, external mold 1 are rigid.External mold 1 typically only makes a one-time use only, therefore can select The material of external mold 1 is used as with No. 45 steel after heat treatment.If sample (such as Ti and Ni) intensity of extruding is high, size is big, it should select With the tool steel of better performances.Meanwhile, the wall thickness of external mold 1 should be set according to the size of different metal sample intensity and inner sleeve 4 Meter.Pressure ram 2, which can be repeated several times, to be used, and can select the materials such as the preferable tool steel of material.

Further, the taper of the through hole of external mold 1 is smaller, and it is more uniform that polynary knot is extruded, and its circumferential pressure is also bigger.But it is same When, when the smaller compression of taper obtains same strain, the stroke of extruding is also longer, and then the extruding for spreading polynary knot as preparing The length of mould is also longer.Therefore, amid all these factors the taper of through hole 0.03:1~0.2:Selection is carried out between 1 to be advisable.

Further, the diameter of pressure ram 2 is less than the diameter of 3 upper surfaces of upper capping.The length of pressure ram need to be more than extruding Stroke (generally 10mm~30mm), in order to the extraction of pressure ram 2 after testing.

Further, external mold 1, pressure ram 2 are cylinder, and inner sleeve 4, upper capping 3 and lower capping 6 are round platform.Inner sleeve 4, The accommodation space that upper capping 3 and lower capping 6 are placed in the taper strict conformance of the through hole planted agent of external mold 1 and the through hole of external mold 1, inner sleeve 4 To house the rectangular parallelepiped space of multiple metal derbies.The upper surface of accommodation space is what is put centered on the center of circle of the upper surface of inner sleeve 4 Square.

Further, external mold 1, pressure ram 2, inner sleeve 4, upper capping 3 and lower capping 6 are before use, be both needed to young with sand paper Thin polishing, eliminates the striped produced during processing, surface is become smooth, reduces the coefficient of friction of metal surface as best one can.Meanwhile, Contact, and place in alignment between sample metal block, inner sleeve 4, capping.Coefficient of friction is for the external mold that is produced in extrusion process Have a significant impact to the circumferential pressure of inner sleeve, the coefficient of friction between inner sleeve 4 and external mold 1 should be reduced in experiment as far as possible, therefore Some lubricants should be properly joined into assembly jig, squeezing effect can be significantly improved.After the completion of extruding, extruding is equipped with The whole mould of the polynary knot of diffusion afterwards is made annealing treatment in the lump, and very big remaining bullet is still had in mould and polynary tie Property stress so that annealing process metal interface bears very big pressure all the time, and then can speed up and spread and obtain good gold Category diffusion interface.

Further, mould the utility model provided is used for the preparation of many member knots of Mg-Ce-Gd-Zr, specific implementation step Suddenly it is：Inner sleeve 4, it is upper capping 3 and it is lower capping 6 from Mg-Ce-Gd-Zr it is many member knot pivot metal Mg, by metal Ce, Gd with And Zr is made metal side bar and is placed in the square hole accommodation space of inner sleeve 4, the taper hole inner surface of external mold 1 is covered with tantalum foil 5, so After be put into lower capping 6, then the inner sleeve 4 for being equipped with metal side bar is placed in external mold 1, finally plus upper capping 3；Reuse extruding Machine makes inner sleeve 4 be depressed into the bottom of external mold 1 by the imposed load 10kN of pressure ram 2 power；Whole mould after extruding is encapsulated in quartz In pipe, it is placed in annealing furnace, is annealed 16 days at a temperature of 450 DEG C.After annealing, determined, spread with ESEM (SEM) Thickness is up to 500 μm.

It should be noted that the noun of locality such as "left", "right" used herein, " on ", " under " is with shown in scheming Defined on the basis of component relative position, it is clear that the application of the above-mentioned noun of locality is for only for ease of description the utility model and letter Change description, rather than indicate or imply signified device or element must have specific orientation, with specific azimuth configuration and Operation, therefore it is not intended that to limitation of the present utility model.

In summary, the extrusion die for the polynary knot of preparation diffusion that the utility model is provided is in general laboratory environment Under, using common extruder and thermal simulation machine, the same three-dimensional squeezing effect of traditional preparation methods can be reached.Utilize The preparation technology that the extrusion die that the utility model is provided prepares the polynary knot of diffusion simply, is easily realized, and it is low to prepare finished product It is honest and clean.

Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that： It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technology of the utility model The spirit and scope of scheme.

Claims

1. a kind of prepare the extrusion die for spreading polynary knot, it is characterised in that including：

External mold provided with conical through-hole, the inner sleeve provided with sample accommodation space, upper capping, lower capping, pressure ram and isolation layer；

It is placed in described in the conical through-hole；The inner sleeve upper surface is provided with the upper capping, the upper capping following table The diameter in face is identical with the diameter of the inner sleeve upper surface；The inner sleeve lower surface is provided with the lower capping, the lower capping The diameter of upper surface is identical with the diameter of the inner sleeve lower surface；And the inner sleeve, the upper capping and the lower capping Taper is identical with the taper of the conical through-hole；

2. the extrusion die according to claim 1 for preparing the polynary knot of diffusion, it is characterised in that the isolation layer is Gao Rong Point material.

3. the extrusion die according to claim 2 for preparing the polynary knot of diffusion, it is characterised in that the upper capping, described Lower capping and the material that the inner sleeve is volume fraction maximum in the polynary knot of diffusion.

4. the extrusion die according to claim 2 for preparing the polynary knot of diffusion, it is characterised in that the upper capping, described Lower capping is different materials with the inner sleeve, and the isolation is equipped between the upper capping, the lower capping and the inner sleeve Layer.

5. the extrusion die of the polynary knot of preparation diffusion according to claim 3 or 4, it is characterised in that the pressure ram, institute It is rigid to state external mold.

6. the extrusion die according to claim 5 for preparing the polynary knot of diffusion, it is characterised in that the taper of the through hole is 0.03:1~0.2:1.

7. the extrusion die according to claim 6 for preparing the polynary knot of diffusion, it is characterised in that the external mold, described squeeze Depression bar is cylinder, and the inner sleeve, the upper capping and the lower capping are round platform.

8. the extrusion die according to claim 7 for preparing the polynary knot of diffusion, it is characterised in that the accommodation space it is upper Surface is the square put centered on the center of circle of the inner sleeve upper surface.

9. the extrusion die according to claim 8 for preparing the polynary knot of diffusion, it is characterised in that the external mold with it is described interior Added with lubricant between set, to reduce the coefficient of friction between the external mold and the inner sleeve.