CN216419300U

CN216419300U - X-ray transmission type CBN composite ultrahigh pressure anvil assembling structure

Info

Publication number: CN216419300U
Application number: CN202123072337.8U
Authority: CN
Inventors: 王磊; 朱君; 刘英丽; 王玥
Original assignee: Langfang Yigu Technology Co ltd
Current assignee: Langfang Yigu Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-03
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to a diamond anvil mounting structure field specifically discloses a compound superhigh pressure anvil assembly structure of X ray transmission type CBN, and the diamond anvil outside cladding CBN cushion of this structure, the outside cladding metal sheath of CBN cushion, adopt conical surface to compress tightly the complex mode and install between diamond anvil and the CBN cushion, between CBN cushion and the metal sheath, has improved the withstand voltage limit of diamond anvil; in addition, the middle part of the cushion block is provided with an upper taper hole and a lower taper hole, the upper taper hole is used for arranging the diamond anvil, the lower taper hole is used as a light outlet and is positioned below the diamond anvil, and the structure is assembled and then installed in a diamond anvil pressing machine, so that the maximum 90-degree X-ray diffraction data can be obtained, and meanwhile, the anvil surface sample can be ensured to be in a high-pressure environment of 200 GPa. The assembled structure allows for sufficiently high sample pressures with a smaller diamond anvil and for collection of wider angle X-ray diffraction data.

Description

X-ray transmission type CBN composite ultrahigh pressure anvil assembling structure

Technical Field

The utility model belongs to the technical field of diamond anvil cell mounting structure and specifically relates to a compound superhigh pressure anvil cell package assembly of X-ray see-through CBN is related to.

Background

The conventional diamond anvil assembly structure generally comprises a diamond anvil and a tungsten carbide hard alloy cushion block, wherein during assembly, the diamond anvil is directly adhered to the plane of the tungsten carbide hard alloy cushion block, and X-ray diffraction data are collected by means of a light outlet hole at the bottom of tungsten carbide.

Because the diamond anvil is limited by the cost problem, the overall size of the anvil is very small, the general diameter is not more than 3.5mm, the diameter of the bottom surface contacted with the tungsten carbide hard alloy cushion block is less than 2.5mm, in order to ensure enough tungsten carbide supporting strength and anvil pressing pressure, the diameter of a light-emitting hole on the tungsten carbide hard alloy cushion block is less than 1.0mm, the cone angle of the light-emitting hole is not more than 60 degrees, when X-rays are incident from the top of the anvil, only a small amount of X-rays can be diffracted out from the light-emitting hole of the tungsten carbide hard alloy cushion block, and other light is shielded by the tungsten carbide hard alloy cushion block, so that the collection of sample diffraction data at the anvil surface position is greatly influenced; in addition, the tungsten carbide hard alloy cushion block can not realize the internal restraint of the pressure of the anvil surface of the diamond, and the anvil is broken often because the pressure bearing of the tungsten carbide hard alloy cushion block is not enough in an ultrahigh pressure environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an X-ray transmission type CBN composite ultrahigh pressure anvil assembling structure.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a compound superhigh pressure hammering block package assembly of X light transmission type CBN, includes the hammering block, and the cladding is established at the cushion and the canning in the cushion outside in the hammering block outside, and the middle part of cushion is equipped with taper hole and lower taper hole, and the hammering block includes lower frustum, and the lower frustum of hammering block is located the last taper hole of cushion, and lower taper hole is for going out the unthreaded hole and is located the below of hammering block.

Furthermore, the anvil is a diamond anvil, the cushion block is a CBN cushion block, and the sheath is a metal sheath.

Further, the anvil also comprises an anvil waist part connected with the lower cone table, an upper cone table connected with the anvil waist part and an anvil surface arranged at the top of the upper cone table, wherein the upper cone table, the lower cone table and the anvil waist part are integrally formed.

Further, the inner wall of the upper taper hole is attached to the circumferential surface of the lower frustum, and the angle of the upper taper hole is 60 degrees.

Further, the angle of the lower taper hole is 30-85 degrees.

Further, the angle of the lower taper hole is 70 degrees.

Furthermore, the middle part of the sheath is provided with a conical mounting hole, the peripheral surface of the cushion block is a conical surface, and the cushion block is arranged in the conical mounting hole in an interference fit mode.

Furthermore, the top of the cushion block is provided with a first conical surface, and the top of the sheath is provided with a second conical surface.

Further, the material of the sheath is alloy steel or beryllium copper.

The utility model has the advantages that: according to the structure, the CBN cushion block is coated on the outer side of the diamond anvil block, the metal sheath is coated on the outer side of the CBN cushion block, and the diamond anvil block and the CBN cushion block and the metal sheath are installed in a conical surface pressing fit mode, so that the pressure resistance limit of the diamond anvil block is improved;

in addition, the middle part of the cushion block is provided with an upper taper hole and a lower taper hole, the upper taper hole is used for arranging a diamond anvil, the lower taper hole is used as a light outlet and is positioned below the diamond anvil, the structure is arranged in a diamond anvil pressing machine after being assembled, the maximum 90-degree X-ray diffraction data can be obtained, meanwhile, an anvil surface sample can be ensured to be in a high-pressure environment of 200GPa, and the assembled structure can obtain enough high sample pressure by using a small diamond anvil and collect X-ray diffraction data of wider angles.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is an assembly diagram of the present invention.

Description of reference numerals: 1. anvil pressing; 11. a lower frustum; 12. pressing the waist part of the anvil; 13. an upper frustum; 14. pressing the anvil surface; 2. cushion blocks; 21. an upper taper hole; 22. a lower taper hole; 23. a first conical surface; 3. sheathing; 31. a tapered mounting hole; 32. a second tapered surface.

Detailed Description

As shown in fig. 1, 2 and 3, an X-ray transmission type CBN composite ultra-high pressure anvil assembly structure includes an anvil 1, a cushion block 2 covering the anvil 1 and a sheath 3 covering the cushion block 2, wherein an upper taper hole 21 and a lower taper hole 22 are arranged in the middle of the cushion block 2;

the anvil 1 comprises a lower cone table 11, an anvil waist portion 12 connected with the lower cone table 11, an upper cone table 13 connected with the anvil waist portion 12 and an anvil surface 14 arranged on the top of the upper cone table 13, wherein the upper cone table 13, the lower cone table 11 and the anvil waist portion 12 are integrally formed, when the anvil is installed, the lower cone table 11 of the anvil 1 is positioned in an upper cone hole 21 of the cushion block 2, a lower cone hole 22 is used as a light outlet and positioned below the anvil 1, and the angle of the lower cone hole 22 is 30-85 degrees, preferably 70 degrees.

In this embodiment, the anvil 1 is a diamond anvil, the cushion block 2 is a CBN cushion block, and the sheath 3 is a metal sheath, which is a CBN cushion block supported by the anvil, and in order to greatly improve the transmission of X-rays, no metal binder is added to the CBN, and simultaneously, the CBN has extremely high hardness. In the high-pressure experiment process, the anvil 1 is axially stressed, a part of force is horizontally dispersed into the CBN cushion block 2 through the lower cone table 11, and in order to eliminate the influence of the horizontal external force on the cushion block, a high-toughness metal sheath 3 is assembled outside the CBN cushion block 2, and the metal sheath 3 can be made of SKD61 alloy steel or high-strength beryllium copper, preferably high-strength beryllium copper.

Further, after the anvil 1 is assembled, the inner wall of the upper tapered hole 21 is attached to the peripheral surface of the lower tapered table 11, and the angle of the upper tapered hole is preferably 60 degrees. When the anvil surface 14 is subjected to axial pressure, force can be horizontally and vertically dispersed on the CBN cushion blocks 2 through the lower cone table 11, and the upper limit of the pressure of the anvil surface 14 is greatly improved.

As shown in fig. 3, in order to facilitate the installation of the cushion block 2, a tapered installation hole 31 is formed in the middle of the sheath 3, the outer peripheral surface of the cushion block 2 is a tapered surface, and the cushion block 2 is arranged in the tapered installation hole 31 in an interference fit manner. In actual installation, the taper of the outer peripheral surface of the cushion block 2 is preferably 3 degrees, the taper of the tapered mounting hole 31 of the metal sheath 3 is 1-1.5 degrees, interference assembly is carried out through a hydraulic press, and the assembly pressure is not less than 20 tons.

In addition, in order to facilitate assembly and reduce damage of horizontal force to the cushion block 2, the top of the cushion block 2 is provided with a first conical surface 23, the top of the sheath 3 is provided with a second conical surface 32, and the conicity of the first conical surface 23 and the second conical surface 32 is 3-15 degrees, preferably 11 degrees.

To sum up, the outer side of the diamond anvil cell 1 of the structure is coated with the CBN cushion block 2, the outer side of the CBN cushion block 2 is coated with the metal sheath 3, and the diamond anvil cell 1 and the CBN cushion block 2, and the CBN cushion block 2 and the metal sheath 3 are installed in a conical surface compression fit mode, so that the withstand voltage limit of the diamond anvil cell 1 is improved;

in addition, the middle part of the cushion block 2 is provided with an upper taper hole 21 and a lower taper hole 22, the upper taper hole 21 is used for arranging the diamond anvil 1, the lower taper hole 22 is used as a light outlet and is positioned below the diamond anvil 1, the structure is assembled and then installed in a diamond anvil pressing machine, the maximum 90-degree X-ray diffraction data can be obtained, meanwhile, an anvil surface sample can be ensured to be in a high-pressure environment of 200GPa, the assembled structure can obtain enough high sample pressure by using a small diamond anvil, and the X-ray diffraction data of a wider angle can be collected.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a compound superhigh pressure hammering block package assembly of X light transmission type CBN, includes the hammering block, and the cladding is established at the cushion and the canning in the cushion outside in the hammering block outside, its characterized in that, the middle part of cushion is equipped with taper hole and lower taper hole, the hammering block includes lower frustum, and the lower frustum of hammering block is located in the last taper hole of cushion, the taper hole is for going out the unthreaded hole and being located down the below of hammering block.

2. The X-ray transmissive CBN composite ultra-high pressure anvil assembly structure as claimed in claim 1, wherein the anvil is a diamond anvil, the cushion block is a CBN cushion block, and the sheath is a metal sheath.

3. The assembly structure of claim 1, wherein the anvil further comprises an anvil waist portion connected to the lower cone, an upper cone connected to the anvil waist portion, and an anvil surface disposed on the top of the upper cone.

4. The X-ray transmission type CBN composite ultra-high pressure anvil assembly structure as claimed in claim 2, wherein the inner wall of the upper taper hole is fitted to the circumferential surface of the lower frustum, and the angle of the upper taper hole is 60 degrees.

5. The X-ray transmissive CBN composite ultra-high pressure anvil assembly structure as claimed in claim 2, wherein the angle of the lower tapered hole is 30-85 degrees.

6. The structure of claim 5, wherein the angle of the lower tapered hole is 70 degrees.

7. The X-ray transmission type CBN composite ultra-high pressure anvil assembly structure as claimed in claim 2, wherein the middle of the sheath is provided with a conical mounting hole, the outer peripheral surface of the cushion block is a conical surface, and the cushion block is arranged in the conical mounting hole in an interference fit manner.

8. The X-ray transmissive CBN composite ultra-high pressure anvil assembly structure as claimed in claim 2, wherein the top of the cushion block is provided with a first tapered surface and the top of the sheath is provided with a second tapered surface.

9. The X-ray transmissive CBN composite ultra-high pressure anvil assembly structure as claimed in claim 2, wherein the sheath is made of alloy steel or beryllium copper.

10. The assembly structure of claim 3, wherein the upper cone, the lower cone and the waist portion of the anvil are integrally formed.