CN-122013187-A - Sealing cobalt removing device, sealing cobalt removing method, assembling equipment and polycrystalline diamond compact

Abstract

The application discloses a sealing cobalt removing device, a sealing cobalt removing method, assembling equipment and a polycrystalline diamond compact, wherein the device comprises a packaging mechanism, a clamping mechanism, a composite sealing ring and a containing mechanism, the clamping mechanism is arranged in the packaging mechanism and used for clamping a workpiece to be cobalt removed, the composite sealing ring is embedded at the top of the clamping mechanism and sleeved on the workpiece to be cobalt removed, the composite sealing ring comprises a first sealing body and a second sealing body embedded at the inner side wall of the first sealing body, the second sealing body is sleeved on the outer wall of the composite layer or sleeved at the junction of the composite layer and a substrate, the first sealing body is used for blocking cobalt removing reagent, the second sealing body is made of a material which can react or not react with the cobalt removing reagent, the containing mechanism is arranged in the packaging mechanism, the bottom of the containing mechanism is tightly pressed on the top surface of the first sealing body, an inner cavity used for containing the cobalt removing reagent is arranged in the containing mechanism, and the inner cavity is communicated with the top surface of the composite layer.

Inventors

• LU FANGYAN
• ZHENG YU
• CAO LIJUAN
• LI WEIMING

Assignees

• 四川伽锐科技有限公司

Dates

Publication Date

20260512

Application Date

20241226

Priority Date

20241122

Claims (20)

1. 1. A sealed cobalt removal device, comprising: A packaging mechanism; The clamping mechanism is arranged in the packaging mechanism and used for clamping a workpiece to be cobalt-removed, wherein the workpiece to be cobalt-removed comprises a base body and a composite layer connected to the top of the base body; The composite sealing ring is embedded at the top of the clamping mechanism, the composite sealing ring is sleeved on the workpiece to be decobalted, the composite sealing ring comprises a first sealing body and a second sealing body embedded at the inner side wall of the first sealing body, the second sealing body is sleeved on the outer wall of the composite layer or the junction of the composite layer and the substrate, the first sealing body is used for blocking the decobalting agent, and the second sealing body is made of a material which can react or not react with the decobalting agent; The packaging mechanism is arranged in the packaging mechanism, the bottom of the packaging mechanism is tightly pressed on the top surface of the first sealing body, an inner cavity for containing the cobalt-removing reagent is arranged in the packaging mechanism, and the inner cavity is communicated with the top surface of the composite layer.
2. 2. The sealed cobalt removal device according to claim 1, wherein a blocking component is disposed in the inner cavity, and a bottom of the blocking component is pressed against a partial area of the top surface of the composite layer, so that an exposed area of the top surface of the composite layer is a reaction area contacted with the cobalt removal agent.
3. 3. A seal decobalting device as defined in claim 2, wherein said barrier assembly includes: the top of the compression column is abutted against the inner top of the inner cavity; the isolation sleeve is arranged at the bottom of the compression column, and is attached to a partial area of the top surface of the composite layer.
4. 4. The sealing cobalt-removing device according to claim 3, wherein the outer wall of the compression column is sleeved with a positioning assembly, the positioning assembly comprises a plurality of positioning blocks connected to the outer wall of the compression column, the positioning blocks are all attached to the inner wall of the inner cavity, and the positioning blocks are adjacent to each other at intervals.
5. 5. The sealed cobalt-removing device according to claim 4, wherein the outer wall of the positioning block is provided with external threads, and the inner wall of the inner cavity is provided with internal threads matched with the external threads.
6. 6. A sealed cobalt removal device according to claim 4 or 5, wherein said containment means comprises: the inner cavity is formed in the bearing block, and the bottom of the bearing block is pressed on the top surface of the first sealing body; and the sealing cover is detachably connected to the top of the bearing block.
7. 7. The sealed cobalt-removing device according to claim 6, wherein said packaging means comprises: The base is internally provided with a containing cavity with an opening at the top, and the clamping mechanism is positioned at the inner bottom of the containing cavity; The compression sleeve is of a hollow structure, the lower section of the compression sleeve is sleeved on the outer wall of the base through threads, and the upper section of the compression sleeve is sleeved on the outer wall of the bearing block; The packaging cover is in threaded sleeve connection with the outer wall of the pressing sleeve, so that the packaging cover is pressed on the top of the sealing cover.
8. 8. The sealing cobalt-removing device according to claim 7, wherein a limiting step is arranged on the outer wall of the bearing block, and a pressing boss matched with the limiting step is arranged in the pressing sleeve.
9. 9. The sealing cobalt removing device according to any one of claims 1 to 5, wherein the clamping mechanism comprises at least two clamping blocks which are detachably connected, clamping grooves for clamping the workpiece to be cobalt removed are formed in the inner walls of the clamping blocks, and step grooves for embedding the composite sealing ring are formed in the tops of the clamping blocks.
10. 10. A sealed cobalt removal device according to claim 1, wherein the top surface of the work piece to be cobalt removed is raised with respect to the top surface of the first sealing body by a height H, H = 600-800 μm.
11. 11. A method of decobalting, characterized in that it is based on a sealed decobalting device according to claim 7, comprising the steps of: clamping the workpiece to be decobalted in the sealing decobalting device through the clamping mechanism, and packaging the sealing decobalting device; Heating the encapsulated sealing cobalt-removing device at a heating temperature of 50-350 ℃; taking out the heated sealing cobalt-removing device, and cooling to room temperature; Disassembling the packaging cover and the sealing cover to pour out the cobalt-removing reagent in the inner cavity; and continuously disassembling the compression sleeve, the bearing block, the blocking assembly and the clamping mechanism to take out the workpiece subjected to cobalt removal.
12. 12. The method of claim 11, wherein clamping the workpiece to be decobalted in the sealed decobalting device by the clamping mechanism, and packaging the sealed decobalting device, comprises: the workpiece to be cobalt-removed is pre-clamped through the clamping mechanism, and a composite sealing ring is arranged at the top of the clamping mechanism, so that the composite sealing ring is sleeved on the workpiece to be cobalt-removed; The clamping mechanism clamping the workpiece to be decobalted is integrally placed at the inner bottom of the accommodating cavity of the base; installing the bearing block so that the bottom of the bearing block is pressed on the top surface of the first sealing body; Installing the compression sleeve so that the compression sleeve compresses the bearing blocks; Installing a blocking assembly in the inner cavity of the bearing block so that the bottom of the blocking assembly is pressed on a partial area of the top surface of the composite layer; Adding a proper amount of cobalt-removing reagent into the inner cavity; Installing the sealing cover on the top of the bearing block so that the inner cavity forms a sealing cavity; and installing the packaging cover to compress the sealing cover, and finally finishing packaging of the sealing cobalt removing device.
13. 13. An assembly device is characterized in that the device for assembling the sealing cobalt-removing device according to claim 7 comprises a workbench, wherein a first assembly mechanism, an acid injection mechanism, a cover sealing mechanism and a second assembly mechanism are arranged on the workbench, a first industrial mechanical arm and a second industrial mechanical arm are respectively arranged on two sides of the workbench, The first industrial mechanical arm is used for clamping the compression sleeve and preassembling the compression sleeve on a preassembling tool to obtain a semi-finished product tool, wherein the preassembling tool is positioned on the workbench, and the preassembling tool is formed by preassembling the clamping mechanism, the composite sealing ring, the workpiece to be decolonized and the bearing block in the base; the first assembling mechanism is used for screwing the pressing sleeve on the outer wall of the base; the acid injection mechanism is used for injecting a cobalt-removing reagent into the inner cavity of the semi-finished product tool; The sealing cover mechanism is used for pressing the sealing cover on the top of the bearing block of the semi-finished product tool after cobalt-removing reagent is injected, so as to manufacture a sealing tool; The second industrial mechanical arm is used for clamping the packaging cover and preassembling the packaging cover on the compression sleeve of the sealing tool; The second assembly mechanism is used for screwing the packaging cover on the outer wall of the pressing sleeve, and finally the sealing cobalt removing device is manufactured.
14. 14. An assembly device as recited in claim 13, further comprising: The first conveying mechanism is used for sequentially moving the semi-finished product tool along stations corresponding to the first industrial mechanical arm, the first assembling mechanism, the acid injection mechanism and the capping mechanism; the second conveying mechanism is used for moving the sealing tool to a station corresponding to the second assembling mechanism; and the transferring mechanism is used for transferring the sealing tool from the first conveying mechanism to the second conveying mechanism.
15. 15. The assembly apparatus of claim 14, wherein the first transport mechanism comprises: The fixing frame is arranged at the bottom of the workbench; the mobile station is arranged on the fixed frame in a sliding manner; The first driving mechanism is arranged on the fixed frame and is used for driving the mobile station to transversely slide on the fixed frame; the first telescopic mechanism is arranged at the bottom of the mobile station, and the telescopic end of the first telescopic mechanism movably penetrates through the mobile station; the lifting platform is arranged at the top of the first telescopic mechanism; At least one first mechanical clamping jaw, first mechanical clamping jaw set up in the top of elevating platform, first mechanical clamping jaw be used for the centre gripping preassemble frock and/or semi-manufactured goods frock, offered on the workstation and be used for first mechanical clamping jaw passes through the bar groove, the bar groove with the slip direction of mobile station is parallel, just the bar groove covers first industrial arm first equipment mechanism annotate sour mechanism with the station that capping mechanism corresponds.
16. 16. An assembly device as claimed in claim 14, wherein said transfer mechanism comprises: The support frame is arranged on the workbench, and the support frame is positioned between the first conveying mechanism and the second conveying mechanism; the second telescopic mechanism is arranged on the support frame in a sliding manner; the second mechanical clamping jaw is arranged at the bottom of the second telescopic mechanism and used for clamping the sealing tool; the second driving mechanism is arranged on the supporting frame and is used for driving the second telescopic mechanism to transversely slide on the supporting frame.
17. 17. The assembly device according to claim 15, wherein stations on the workbench corresponding to the first industrial mechanical arm, the first assembly mechanism, the acid injection mechanism, the cover sealing mechanism, the transfer mechanism, the second assembly mechanism and the second industrial mechanical arm are provided with at least one group of positioning seats, the positioning seats are used for placing the semi-finished product tool or the sealing tool, and the positioning seats are arranged along two sides of the strip-shaped groove.
18. 18. The assembly apparatus of claim 13, wherein the first assembly mechanism comprises: the support arm is arranged on the workbench; A rotary drive mechanism slidably disposed on the support arm; The third driving mechanism is used for driving the rotary driving mechanism to vertically slide on the supporting arm; The screwing sleeve is connected to the bottom of the rotary driving mechanism and used for screwing the pressing sleeve to the outer wall of the base.
19. 19. The assembly apparatus of claim 13, wherein the acid injection mechanism comprises: The first lifting mechanism is arranged on the workbench; The pump body is arranged on the first lifting mechanism so as to enable the pump body to move up and down, and the pump body is used for conveying the cobalt-removing reagent; the acid injection pipe is connected with the pump body and used for injecting a cobalt-removing reagent into the inner cavity of the semi-finished product tool.
20. 20. The assembly equipment of claim 19, wherein a smoke prevention cover is arranged on the workbench, through grooves for the semi-finished product tool to pass through are formed in two sides of the smoke prevention cover, the acid injection pipe penetrates through the smoke prevention cover actively, and a smoke exhaust pipe is arranged at the top of the smoke prevention cover.

Description

Sealing cobalt removing device, sealing cobalt removing method, assembling equipment and polycrystalline diamond compact Technical Field The application relates to the technical field of cobalt removal, in particular to a sealing cobalt removal device, a sealing cobalt removal method, sealing cobalt removal equipment and a sealing cobalt removal polycrystalline diamond compact. Background Polycrystalline diamond composites play a decisive role in the drilling efficiency of the overall drill bit as a key working component for crude oil and natural gas extraction, as well as a material that directly shears and pulverizes with the rock structure. Because of the extreme nature of the subsurface drilling conditions, polycrystalline diamond compacts are required to possess the most excellent material properties to accomplish mining tasks, including extremely high hardness, toughness, and thermal stability. Because Polycrystalline Diamond Compact (PDC) is a superhard composite material for oil gas drilling and mineral exploitation, wear resistance and impact resistance are improved by removing cobalt in a diamond layer, and when the cobalt removing device for the compact is used for sealing and cobalt removing, a cobalt removing reagent (namely acid liquor required by cobalt removing) is isolated through a sealing ring, so that the acid liquor only contacts with a cobalt layer to be removed of the compact, but the condition that part of acid liquor permeates the sealing ring still exists, the acid liquor isolating performance is poor, a certain degree of corrosion is caused on the surface of an alloy part of the compact, the surface requirement of a product is met by grinding, the quality of the finally manufactured compact is lower, and the service life is also lower. Disclosure of Invention The application mainly aims to provide a sealing cobalt removing device, a sealing cobalt removing method, an assembling device and a polycrystalline diamond compact, and aims to solve the technical problem that the surface quality of a finally manufactured diamond compact is low due to poor isolation performance of a cobalt removing reagent of the existing diamond compact cobalt removing device. The application provides a sealing cobalt removing device which comprises a packaging mechanism, a clamping mechanism, a composite sealing ring and a containing mechanism, wherein the clamping mechanism is arranged in the packaging mechanism and used for clamping a workpiece to be cobalt removed, the workpiece to be cobalt removed comprises a base body and a composite layer connected to the top of the base body, the composite sealing ring is embedded in the top of the clamping mechanism and sleeved on the workpiece to be cobalt removed, the composite sealing ring comprises a first sealing body and a second sealing body embedded in the inner side wall of the first sealing body, the second sealing body is sleeved on the outer wall of the composite layer or the junction of the composite layer and the base body, the first sealing body is used for blocking the cobalt removing reagent, the second sealing body is made of a material which can react or not react with the cobalt removing reagent, the containing mechanism is arranged in the packaging mechanism, the bottom of the containing mechanism is pressed on the top surface of the first sealing body, an inner cavity for containing the cobalt removing reagent is arranged in the containing mechanism, and the inner cavity is communicated with the top surface of the composite layer. Optionally, a blocking component is arranged in the inner cavity, and the bottom of the blocking component is pressed on a partial area of the top surface of the composite layer, so that the exposed area of the top surface of the composite layer is a reaction area contacted with the cobalt-removing reagent. Optionally, the separation assembly comprises a compression column and a separation sleeve, wherein the top of the compression column is abutted against the inner top of the inner cavity, the separation sleeve is arranged at the bottom of the compression column, and the separation sleeve is attached to a partial area of the top surface of the composite layer. Optionally, the outer wall of the compression column is sleeved with a positioning assembly, the positioning assembly comprises a plurality of positioning blocks connected to the outer wall of the compression column, the positioning blocks are all attached to the inner wall of the inner cavity, and the adjacent positioning blocks are arranged at intervals. Optionally, the outer wall of the positioning block is provided with external threads, and the inner wall of the inner cavity is provided with internal threads matched with the external threads. Optionally, the containing mechanism comprises a containing block and a sealing cover, the inner cavity is arranged in the containing block, the bottom of the containing block is pressed on the top surface of the