CN113441087A - Hollow bench type pyrophyllite block equipment for diamond synthesis and forming method thereof - Google Patents
Hollow bench type pyrophyllite block equipment for diamond synthesis and forming method thereof Download PDFInfo
- Publication number
- CN113441087A CN113441087A CN202110775664.5A CN202110775664A CN113441087A CN 113441087 A CN113441087 A CN 113441087A CN 202110775664 A CN202110775664 A CN 202110775664A CN 113441087 A CN113441087 A CN 113441087A
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- hollow
- sleeve
- pressure head
- equipment
- pyrophyllite block
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- 229910052903 pyrophyllite Inorganic materials 0.000 title claims abstract description 53
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 30
- 239000010432 diamond Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 21
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 67
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims description 40
- 229910045601 alloy Inorganic materials 0.000 claims description 40
- 210000000078 claw Anatomy 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 6
- 239000011707 mineral Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/065—Presses for the formation of diamonds or boronitrides
Abstract
The hollow bench type pyrophyllite block processing equipment and the forming method for diamond synthesis realize automatic material distribution, material loading, pressing and product taking through the arrangement of the automatic material distribution unit, the automatic material feeding and pushing-out unit and the pressing and die stripping unit, and can efficiently press the hollow bench type pyrophyllite block; the novel hollow bench type pyrophyllite block produced by the method not only meets the sealing and strength requirements of a pressure transmission sealing element in diamond synthesis, but also can save precious nonrenewable mineral resources and is beneficial to controlling the production cost of the diamond; in the molding of hollow core pallet-type pyrophyllite blocks, the structure complexity degree is increased relative to that of crude pyrophyllite blocks, and the problems that the existing material distribution, pressing and material returning equipment is uneven in material loading and easy to cause workpiece sand holes, the molded hollow pallet-type pyrophyllite blocks are low in strength due to poor pressing density consistency, and the low intrinsic safety degree of automatic material returning cannot be realized are solved.
Description
Technical Field
The invention belongs to the technical field of powder forming, and particularly relates to a processing device and a forming method of a hollow bench type pyrophyllite block for diamond synthesis in a pressure transfer and heat preservation sealing element made of superhard materials.
Background
At present, industrial synthetic diamond is generally carried out under the environment of high temperature and high pressure, a pyrophyllite block is used as a main component of a pressure transmission component of the diamond synthetic block, and the forming state of the pyrophyllite block is very important for the quality of the synthetic diamond. Along with the development of mineral resources, some high-quality pyrophyllite resources are gradually exhausted, and meanwhile, the price is continuously increased, and the diamond enterprises face double pressure of resource crisis and cost. In order to solve the pressure, the structure of the composite assembly is optimized, on the premise of ensuring the stability of the composite block, the pyrophyllite block is made into a hollow stool shape by replacing part of pyrophyllite materials with enough and low-cost dolomite in mineral reserves, and the equipment and the process method are used for realizing the forming of the pyrophyllite block in the shape. The hollow stool type pyrophyllite block is more difficult to form, and the prior equipment and process method cannot produce qualified products, so the problems are solved by the invention.
Disclosure of Invention
The invention aims to provide the hollow bench type pyrophyllite block processing equipment and the forming method for diamond synthesis aiming at the defects of the prior art, which not only meet the sealing and strength requirements of a pressure transmission sealing element in diamond synthesis, but also save precious nonrenewable mineral resources and are beneficial to controlling the production cost of diamond.
In order to solve the technical problems, the invention adopts the technical scheme that:
the hollow bench type pyrophyllite block processing equipment for diamond synthesis comprises an automatic material distribution unit, an automatic feeding and pushing unit and a pressing and demolding unit;
the automatic material distribution unit comprises a storage bin and a constant volume distributor, and the materials in the storage bin fall into the constant volume distributor by means of dead weight;
the automatic feeding pushing unit comprises a driving device, a blanking sleeve and a guide plate fixed on the blanking sleeve, an automatic discharging claw is further arranged outside the blanking sleeve, and the driving device drives the blanking sleeve and ensures that materials fall into the blanking sleeve;
the pressing and demolding unit comprises an equipment main frame, a mold frame part and a mold part;
the lower end of a base of the main frame of the equipment is provided with a jacking cylinder, four corners of the base are locked and provided with upright columns, the upper end of the base is locked and integrated with the upright columns through an upper transverse frame, the upper transverse frame is also provided with a main cylinder, and the end part of a piston of the main cylinder is connected with an upper sliding block;
the die carrier part comprises an upper die plate, an upper die plate guide post, a female die plate guide post, a lower pressure head base plate, an auxiliary cylinder, a core rod plate and a supporting seat which are connected from top to bottom;
the die part comprises an upper pressure head fixedly arranged on the lower end surface of the upper die plate, an alloy die sleeve fixed with the female die plate, a lower pressure head fixedly arranged with a lower pressure head base plate and an alloy core bar fixedly arranged with the core bar plate.
The automatic feeding pushing unit further comprises a discharging catch claw and a material returning shifting fork, the discharging catch claw and the automatic discharging catch claw are arranged in an aligned mode, and the material returning shifting fork is arranged on the outer side face of the die cavity.
The driving device adopts a double-stroke cylinder to carry out linear driving.
The forming method of the hollow bench type pyrophyllite block processing equipment for diamond synthesis comprises the following steps:
(1) preparation of charge
The ejector cylinder drives the female die plate to move upwards, the main cylinder drives the upper sliding block to be linked with the upper pressure head to move upwards, meanwhile, the central cylinder in the ejector cylinder drives the core bar plate to be linked with the core bar to move upwards, and the upper end of the spherical surface of the core bar is flush with the alloy die sleeve;
(2) the material is divided into two parts,
the materials with the specified granularity are mixed and loaded into a storage bin, and the material which is well distributed falls into a feeding device by the rotation of a constant volume distributor;
(3) feeding the materials to a feeding device,
the driving device drives the guide plate fixed at the upper end of the blanking sleeve to slide to the lower end of the distributor, the distributed materials are conveyed into a cavity of the blanking sleeve, and then the driving device pushes the materials to be conveyed to the upper end of the alloy die sleeve;
(4) preparation for pressing
Shaking the material falling into the die cavity of the alloy die sleeve up and down through the core rod, and synchronously shaking the material and the lower pressure head up and down, wherein the shaking is required to be synchronous but opposite in direction;
(5) pressing
The upper end surface of the core rod is flush with the upper end of the alloy die sleeve, the upper end surface of the lower pressure head is positioned above the upper end surface of the alloy die sleeve, the upper pressure head descends until entering the alloy die sleeve, and the female die synchronously descends and floats;
(6) pressure maintaining device
Maintaining the pressure according to the requirement of high strength of the product;
(7) demoulding
The upper pressure head moves upwards, the alloy die sleeve and the core rod move downwards until the hollow stool type pyrophyllite block completely exits the die cavity of the alloy die sleeve;
(8) get product
The driving device drives the automatic unloading claw to cooperate with the unloading catch claw to clamp the formed hollow stool type pyrophyllite block, and the formed product is pushed out of the operation space by the material returning shifting fork;
(9) and (5) repeating the steps (1) to (8) to continuously press the hollow bench type pyrophyllite blocks.
Shaking the material falling into the alloy die sleeve cavity in the step (4) up and down for 6-8 times by the core rod, wherein the shaking distance is 25-27 mm;
the lower pressure head synchronously and reversely shakes up and down for 6-8 times, and the distance of shaking up and down is 25-27 mm.
Preferably, in the step (5), the upper end face of the lower pressure head is 18mm above the upper end face of the alloy die sleeve.
Preferably, the pressure maintaining time in the step (6) is 3s, and the pressure maintaining pressure is 11-12 MPa.
Preferably, the mold release force in step (7) is 4.5 to 5 MPa.
The invention has the beneficial effects that:
(1) according to the hollow bench type pyrophyllite block processing equipment and the forming method for diamond synthesis, automatic material distribution, material charging, pressing and product taking are realized through the arrangement of the automatic material distribution unit, the automatic feeding and pushing-out unit and the pressing and demolding unit, and the hollow bench type pyrophyllite block can be efficiently pressed; the novel hollow bench type pyrophyllite block produced by the method not only meets the sealing and strength requirements of a pressure transmission sealing element in diamond synthesis, but also can save precious nonrenewable mineral resources and is beneficial to controlling the production cost of the diamond; in the molding of hollow core pallet-type pyrophyllite blocks, the structure complexity degree is increased relative to that of crude pyrophyllite blocks, and the problems that the existing material distribution, pressing and material returning equipment is uneven in material loading and easy to cause workpiece sand holes, the molded hollow pallet-type pyrophyllite blocks are low in strength due to poor pressing density consistency, and the low intrinsic safety degree of automatic material returning cannot be realized are solved.
(2) According to the strength requirement of the hollow stool type pyrophyllite block, the strength of the joint of the convex part and the bottom surface of the hollow stool type pyrophyllite block is improved by optimizing the pressing process;
(3) by the forming method of the hollow bench type pyrophyllite block, precious non-renewable mineral resources are saved, and the production cost of the diamond is controlled.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The invention provides a processing device and a forming method of a hollow bench type pyrophyllite block for diamond synthesis, which are shown in figure 1.
The hollow bench type pyrophyllite block processing equipment for diamond synthesis comprises an automatic material distribution unit, an automatic feeding and pushing unit and a pressing and demolding unit.
The material bin 15 in the automatic material distributing unit drops the material into the constant volume type distributor 14, and the constant volume type distributor 14 rotates to send the material to the guide plate 13 of the feeding unit to complete the material distributing action; the automatic feeding and pushing unit linearly drives a blanking sleeve 11 by a double-stroke feeding cylinder 10, the double-stroke feeding cylinder 10 is arranged on a feeding supporting plate 9, a guide plate 13 is fixed on the blanking sleeve 11, the sliding inclination of the material of the guide plate 13 is 35 degrees, the material is ensured to freely slide into the blanking sleeve 11, an automatic discharging claw 12 is arranged at the right end of the blanking sleeve 11, a discharging catch claw 23 is arranged at the tail end and is aligned with the automatic discharging claw 12 for clamping the formed product to take the product out of a lower pressure head 26, and a material returning shifting fork 24 arranged at the side surface of a die cavity acts to push the formed product out of an operation space; the pressing and demolding unit is divided into three parts of an equipment main frame, a mold frame and a mold, wherein the lower end of a base 1 of the equipment main frame is provided with a jacking cylinder, stand columns 2 are locked on four corners of the base 1, the upper ends of the stand columns are locked into a whole by an upper cross frame 17 and four stand columns 2, the upper cross frame 17 is provided with a main cylinder 18, and the piston end part of the main cylinder 18 is connected with an upper sliding block 16; the die carrier part comprises an upper die plate 19, an upper die plate guide post 20, a female die plate 8, a female die plate guide post 6, a lower pressure head cushion plate 7, an auxiliary cylinder 4, a core bar plate 5 and a supporting seat 3 which are connected from top to bottom, wherein the female die plate 8 is driven by a lower ejection cylinder, the lower pressure head cushion plate 7 slides up and down and is executed by the auxiliary cylinder 4, and the core bar plate 5 slides up and down by the driving of a central cylinder 28; the die part comprises an upper pressing head 21, an alloy die sleeve 25, a lower pressing head 26 and an alloy core bar 27, which are respectively fixed on the lower end surface of an upper die plate 19, a female die plate 8, a lower pressing head backing plate 7 and a core bar plate 5, and independent or linkage of each die workpiece can be realized through driving of a main cylinder 18, an ejecting cylinder (the lower part of a base), an auxiliary cylinder 4 and a central cylinder 28.
A forming method of hollow bench type pyrophyllite block processing equipment based on diamond synthesis comprises the following steps:
(1) preparing for charging, wherein a jacking cylinder drives a female die plate 8 to move upwards to ensure that the material loose height is enough, a main cylinder 18 drives an upper slide block 16 to be linked with an upper pressure head 21 to move upwards to a safe position to reserve a space for a feeding device, a central cylinder 28 in the jacking cylinder drives a core rod plate 5 to be linked with an alloy core rod 27 to move upwards, and the spherical upper end of the alloy core rod 27 is flush with an alloy die sleeve 25;
(2) distributing materials, namely mixing pyrophyllite with specified granularity, loading the mixed pyrophyllite into a storage bin 15, and rotating a constant volume type distributor 14 to enable the distributed pyrophyllite to fall into a feeding device;
(3) feeding, wherein a guide plate 13 fixed at the upper end of a blanking sleeve 11 is driven by a double-stroke feeding cylinder 10 to slide to the lower end of a constant volume distributor 14, the distributed materials are fed into a cavity of the blanking sleeve 11, and the double-stroke feeding cylinder 10 pushes the materials to be fed to the upper end of an alloy die sleeve 25;
(4) pressing preparation, in order to ensure the consistency of the pressing strength of each convex part of the hollow bench type pyrophyllite block 22, the material falling into the cavity of the alloy die sleeve 25 is vertically shaken for 6-8 times through the alloy core rod 27, the vertical shaking distance is about 25-27mm, the material is also vertically shaken synchronously with the lower pressure head 26 for 6-8 times, the vertical shaking distance is about 25-27mm, but the lower pressure head 26 is required to be downwards when the alloy core rod 27 is upwards, namely the shaking is synchronous but opposite in direction, and the shaking amplitude speed of the material is ensured to be large enough, so that the consistency of the quality of the material in each charging area is improved;
(5) pressing, namely finishing the preparation work, wherein the upper end surface of the alloy core rod 27 is flush with the upper end of the alloy die sleeve 25, the upper end surface of the lower pressing head 26 is 18mm away from the upper end surface of the alloy die sleeve 25, the upper pressing head 21 descends until entering the alloy die sleeve 25, and simultaneously the female die plate 8 synchronously descends and floats, so that the strength of the joint of the convex part and the bottom surface of the hollow core bench type pyrophyllite block 22 is increased;
(6) maintaining the pressure, namely maintaining the pressure for 3s at the specified position according to the height requirement of the product, wherein the pressure maintaining pressure is 11-12 MPa;
(7) demoulding, wherein the upper pressure head 21 moves upwards, the alloy die sleeve 25 and the alloy core rod 27 move downwards until the hollow bench type pyrophyllite block 22 completely exits the die cavity of the alloy die sleeve 25, and the demoulding force is 4.5-5 MPa;
(8) taking a product, driving an automatic discharging claw 12 by a double-stroke feeding cylinder 10, clamping a hollow stool type pyrophyllite block 22 by matching with a discharging blocking claw 23, and pushing the formed product out of an operation space by a material returning shifting fork 24;
(9) repeating the steps 1-8 to continuously press the hollow bench type pyrophyllite block 22.
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 embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "center", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the scope of the present invention.
Claims (8)
1. Synthetic hollow core pallet formula pyrophyllite piece processing equipment of using of diamond, its characterized in that: comprises an automatic material distributing unit, an automatic feeding and pushing unit and a pressing and demolding unit;
the automatic material distribution unit comprises a storage bin and a constant volume distributor, and the materials in the storage bin fall into the constant volume distributor by means of dead weight;
the automatic feeding pushing unit comprises a driving device, a blanking sleeve and a guide plate fixed on the blanking sleeve, an automatic discharging claw is further arranged outside the blanking sleeve, and the driving device drives the blanking sleeve and ensures that materials fall into the blanking sleeve;
the pressing and demolding unit comprises an equipment main frame, a mold frame part and a mold part;
the lower end of a base of the main frame of the equipment is provided with a jacking cylinder, four corners of the base are locked and provided with upright columns, the upper end of the base is locked and integrated with the upright columns through an upper transverse frame, the upper transverse frame is also provided with a main cylinder, and the end part of a piston of the main cylinder is connected with an upper sliding block;
the die carrier part comprises an upper die plate, an upper die plate guide post, a female die plate guide post, a lower pressure head base plate, an auxiliary cylinder, a core rod plate and a supporting seat which are connected from top to bottom;
the die part comprises an upper pressure head fixedly arranged on the lower end surface of the upper die plate, an alloy die sleeve fixed with the female die plate, a lower pressure head fixedly arranged with a lower pressure head base plate and an alloy core bar fixedly arranged with the core bar plate.
2. The hollow bench-type pyrophyllite block processing equipment for diamond synthesis according to claim 1, characterized in that: the automatic feeding pushing unit further comprises a discharging catch claw and a material returning shifting fork, the discharging catch claw and the automatic discharging catch claw are arranged in an aligned mode, and the material returning shifting fork is arranged on the outer side face of the die cavity.
3. The equipment and the method for processing the hollow bench type pyrophyllite block for diamond synthesis according to claim 1 are characterized in that: the driving device adopts a double-stroke cylinder to carry out linear driving.
4. The molding method of the hollow bench-type pyrophyllite block processing equipment for diamond synthesis as claimed in any one of claims 1 to 3, characterized by comprising the following steps:
(1) preparation of charge
The ejector cylinder drives the female die plate to move upwards, the main cylinder drives the upper sliding block to be linked with the upper pressure head to move upwards, meanwhile, the central cylinder in the ejector cylinder drives the core bar plate to be linked with the core bar to move upwards, and the upper end of the spherical surface of the core bar is flush with the alloy die sleeve;
(2) the material is divided into two parts,
the materials with the specified granularity are mixed and loaded into a storage bin, and the material which is well distributed falls into a feeding device by the rotation of a constant volume distributor;
(3) feeding the materials to a feeding device,
the driving device drives the guide plate fixed at the upper end of the blanking sleeve to slide to the lower end of the distributor, the distributed materials are conveyed into a cavity of the blanking sleeve, and then the driving device pushes the materials to be conveyed to the upper end of the alloy die sleeve;
(4) preparation for pressing
Shaking the material falling into the die cavity of the alloy die sleeve up and down through the core rod, and synchronously shaking the material and the lower pressure head up and down, wherein the shaking is required to be synchronous but opposite in direction;
(5) pressing
The upper end surface of the core rod is flush with the upper end of the alloy die sleeve, the upper end surface of the lower pressure head is positioned above the upper end surface of the alloy die sleeve, the upper pressure head descends until entering the alloy die sleeve, and the female die synchronously descends and floats;
(6) pressure maintaining device
Maintaining the pressure according to the requirement of high strength of the product;
(7) demoulding
The upper pressure head moves upwards, the alloy die sleeve and the core rod move downwards until the hollow stool type pyrophyllite block completely exits the die cavity of the alloy die sleeve;
(8) get product
The driving device drives the automatic unloading claw to cooperate with the unloading catch claw to clamp the formed hollow stool type pyrophyllite block, and the formed product is pushed out of the operation space by the material returning shifting fork;
(9) and (5) repeating the steps (1) to (8) to continuously press the hollow bench type pyrophyllite blocks.
5. The equipment and the method for processing the hollow bench type pyrophyllite block for diamond synthesis according to claim 4 are characterized in that: shaking the material falling into the alloy die sleeve cavity in the step (4) up and down for 6-8 times by the core rod, wherein the shaking distance is 25-27 mm;
the lower pressure head synchronously and reversely shakes up and down for 6-8 times, and the distance of shaking up and down is 25-27 mm.
6. The equipment and the method for processing the hollow bench type pyrophyllite block for diamond synthesis according to claim 4 are characterized in that: and (5) the upper end surface of the middle lower pressure head is 18mm above the upper end surface of the alloy die sleeve.
7. The equipment and the method for processing the hollow bench type pyrophyllite block for diamond synthesis according to claim 4 are characterized in that: and (4) keeping the pressure in the step (6) for 3s and keeping the pressure at 11-12 MPa.
8. The equipment and the method for processing the hollow bench type pyrophyllite block for diamond synthesis according to claim 4 are characterized in that: in the step (7), the demolding force is 4.5-5 MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775664.5A CN113441087A (en) | 2021-07-09 | 2021-07-09 | Hollow bench type pyrophyllite block equipment for diamond synthesis and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775664.5A CN113441087A (en) | 2021-07-09 | 2021-07-09 | Hollow bench type pyrophyllite block equipment for diamond synthesis and forming method thereof |
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| CN113441087A true CN113441087A (en) | 2021-09-28 |
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| CN202110775664.5A Pending CN113441087A (en) | 2021-07-09 | 2021-07-09 | Hollow bench type pyrophyllite block equipment for diamond synthesis and forming method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113856558A (en) * | 2021-10-13 | 2021-12-31 | 中南钻石有限公司 | High-performance composite pressure transmission part and preparation method thereof |
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