CN111112657A - PCD cutter composite sheet - Google Patents
PCD cutter composite sheet Download PDFInfo
- Publication number
- CN111112657A CN111112657A CN201911397831.6A CN201911397831A CN111112657A CN 111112657 A CN111112657 A CN 111112657A CN 201911397831 A CN201911397831 A CN 201911397831A CN 111112657 A CN111112657 A CN 111112657A
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- China
- Prior art keywords
- pcd
- blade
- parts
- weight
- pcd cutter
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/31—Diamond
- B23B2226/315—Diamond polycrystalline [PCD]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a PCD cutter composite sheet, which comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight: 40-60 parts by weight of polycrystalline diamond powder; 5-8 parts of tungsten carbide; 3-5 parts of manganese carbide; 2-4 parts of gadolinium oxide; 0.5-1 part by weight of titanium carbide; 2-4 parts of chromium. The PCD cutter composite sheet has excellent hardness and oxidation resistance temperature, improves the high temperature resistance of diamond on the PCD sheet, prevents oxidation, graphitization, solvation or carbide generation, improves the sharpness of the PCD cutter, and prolongs the service life.
Description
Technical Field
The invention relates to the technical field of superhard tools, in particular to a PCD cutter composite sheet.
Background
Diamond has been used for hundreds of years as a superhard cutting tool material for cutting machining. In the development process of the cutter, the cutter material is mainly represented by high-speed steel from the end of nineteenth century to the middle of twentieth century; in 1927, Germany firstly developed hard alloy cutter materials and obtained wide application; synthetic diamonds were synthesized in the twentieth fifty years, sweden and the united states, respectively, and cutting tools have since stepped into the period represented by superhard materials. In the seventies of the twentieth century, people use a high-pressure synthesis technology to synthesize polycrystalline diamond PCD, solve the problems of rare quantity and high price of natural diamond, and expand the application range of diamond cutters to a plurality of fields such as aviation, aerospace, automobiles, electronics, stone and the like. Because of the characteristics of polycrystalline diamond compact (PCD) materials, the PCD compact is difficult to combine with other materials, and meanwhile, in the process of combining with other materials and manufacturing tools, the diamond on the PCD compact is influenced by high temperature and is easy to generate oxidation, graphitization, solvation or carbide generation, so that the sharpness of the tools is reduced, the service life is short, and the production cost is increased.
Disclosure of Invention
In view of the problems of the conventional PCD cutter compact, the present invention provides a PCD cutter compact.
In order to solve the technical problems, the invention adopts the technical scheme that:
a PCD cutter compact wherein: the PCD blade is arranged on the blade substrate through high-temperature crimping; the PCD blade comprises the following materials in parts by weight:
preferably, the PCD cutter compact wherein: the epoxy resin modified polyurethane resin also comprises 5-10 parts by weight of epoxy resin modified polyurethane resin.
Preferably, the PCD cutter compact wherein: the number average molecular weight of the epoxy resin modified polyurethane resin is 5000-50000.
Preferably, the PCD cutter compact wherein: and also comprises 12-24 parts by weight of sodium carbonate.
Preferably, the PCD cutter compact wherein: and the coating also comprises 4-7 parts by weight of hollow glass microspheres.
Preferably, the PCD cutter compact wherein: and 2-4 parts by weight of boric acid.
Preferably, the PCD cutter compact wherein: the surface layer of the PCD blade is provided with a boron layer, and the thickness of the boron layer is 10-20 mu m.
Preferably, the PCD cutter compact wherein: the boron layer is prepared by chemical vapor deposition.
Has the advantages that:
the PCD cutter composite sheet has excellent hardness and oxidation resistance temperature, improves the high temperature resistance of diamond on the PCD sheet, prevents oxidation, graphitization, solvation or carbide generation, improves the sharpness of the PCD cutter, and prolongs the service life.
Detailed Description
The following examples further illustrate embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The present invention provides a PCD cutter compact, wherein: the PCD blade is arranged on the blade substrate through high-temperature crimping; the PCD blade comprises the following materials in parts by weight:
the diamond cutter has the characteristics of high hardness, high compressive strength, good heat conductivity, good wear resistance and the like, and can obtain high processing precision and processing efficiency in high-speed cutting. The above characteristics of the diamond tool are determined by the state of the diamond crystal in which four valence electrons of carbon atoms are bonded in a tetrahedral structure and each carbon atom forms a covalent bond with four adjacent atoms to constitute a diamond structure, the bonding force and directionality of which are strong, thereby making the diamond have an extremely high hardness, since the structure of polycrystalline diamond PCD is a fine grain diamond sintered body with different orientations, although the bonding agent is added, the hardness and wear resistance thereof are lower than those of single crystal diamond; by adding tungsten carbide, manganese carbide, gadolinium oxide, titanium carbide and chromium, a bonding bridge which takes the tungsten carbide, the manganese carbide, the gadolinium oxide, the titanium carbide and the chromium as main components is formed among polycrystalline diamond crystals, and the diamond crystals are embedded in a framework of the bonding bridge in a covalent bond mode, so that the hardness, the wear resistance, the high temperature resistance and the oxidation resistance of the PCD blade are improved;
as another embodiment of the present disclosure, wherein: the epoxy resin modified polyurethane resin also comprises 5-10 parts by weight of epoxy resin modified polyurethane resin. The addition of the epoxy resin modified polyurethane resin as a bonding material is improved, the bonding fastness of the PCD blade material is improved, sand falling is prevented, and the mechanical property, the bonding strength and the corrosion resistance of the material are improved;
as another embodiment of the present disclosure, wherein: the number average molecular weight of the epoxy resin modified polyurethane resin is 5000-50000.
As another embodiment of the present disclosure, wherein: and also comprises 12-24 parts by weight of sodium carbonate. The sodium carbonate improves the self-sharpening performance of the PCD compact;
as another embodiment of the present disclosure, wherein: and the coating also comprises 4-7 parts by weight of hollow glass microspheres. The hollow glass microspheres further improve the hardness, wear resistance and high temperature resistance.
As another embodiment of the present disclosure, wherein: and 2-4 parts by weight of boric acid. The heat resistance and the performance of the blade product are improved by adding boric acid, the mechanical strength is improved, and the melting time is shortened.
As another embodiment of the present disclosure, wherein: the surface layer of the PCD blade is provided with a boron layer, and the thickness of the boron layer is 10-20 mu m. Boron atoms in the boron layer can enter gaps of metal lattices to form a gap solid solution, so that the bonding strength of the PCD blade and the cutter substrate is improved, the boron layer is arranged on one surface of the PCD blade, and the other surface of the PCD blade is provided with the blade substrate.
As another embodiment of the present disclosure, wherein: the boron layer is prepared by chemical vapor deposition.
The PCD compact manufacturing process comprises the following steps: (1) uniformly mixing and stirring polycrystalline diamond powder, tungsten carbide, manganese carbide, gadolinium oxide, titanium carbide, chromium, epoxy resin modified polyurethane resin sodium carbonate, hollow glass microspheres and boric acid according to the proportion, putting the mixture into a vacuum carbon tube furnace, vacuumizing to the vacuum degree of about 10-2Pa, introducing hydrogen at the gas pressure of 100-120 Pa and the heating rate of 5 ℃/min to 1400 ℃, preserving heat for 60min, cooling the mixture to room temperature along with the furnace, taking out the treated PCD blade, and cleaning the PCD blade to obtain the PCD blade; (2) chemical vapor depositing a boron layer on the PCD blade; (3) and pressing the PCD blade deposited with the boron layer on the blade substrate at high temperature to obtain the PCD compact.
Specific examples and comparative examples are listed below:
example 1:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin-modified polyurethane resin was 5000.
The surface layer of the PCD blade is provided with a boron layer, the thickness of the boron layer is 10 mu m, and the boron layer is prepared by chemical vapor deposition.
Example 2:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin modified polyurethane resin is 10000.
The surface layer of the PCD blade is provided with a boron layer, the thickness of the boron layer is 15 mu m, and the boron layer is prepared by chemical vapor deposition.
Example 3:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin modified polyurethane resin is 50000, a boron layer is arranged on the surface layer of the PCD blade, and the thickness of the boron layer is 20 microns; the boron layer is prepared by chemical vapor deposition.
Comparative example 1:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin-modified polyurethane resin was 5000.
The surface layer of the PCD blade is provided with a boron layer, the thickness of the boron layer is 10 mu m, and the boron layer is prepared by chemical vapor deposition.
Comparative example 2:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin-modified polyurethane resin was 5000.
The surface layer of the PCD blade is provided with a boron layer, the thickness of the boron layer is 10 mu m, and the boron layer is prepared by chemical vapor deposition.
Comparative example 3:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin modified polyurethane resin is 10000.
The surface layer of the PCD blade is provided with a boron layer, the thickness of the boron layer is 15 mu m, and the boron layer is prepared by chemical vapor deposition.
Comparative example 4:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin modified polyurethane resin is 10000.
The surface layer of the PCD blade is provided with a boron layer, the thickness of the boron layer is 15 mu m, and the boron layer is prepared by chemical vapor deposition.
Comparative example 5:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin modified polyurethane resin is 50000, a boron layer is arranged on the surface layer of the PCD blade, and the thickness of the boron layer is 20 microns; the boron layer is prepared by chemical vapor deposition.
Comparative example 6:
a PCD cutter compact comprises a blade substrate and a PCD blade arranged on the blade substrate, wherein the PCD blade is pressed on the blade substrate through high temperature; the PCD blade comprises the following materials in parts by weight:
the number average molecular weight of the epoxy resin-modified polyurethane resin was 50000.
The results of the performance tests of the examples and comparative examples are set forth below:
from the data of the above examples 1 to 3 and comparative examples 1 to 6, it is known that the PCD cutter compact of the present invention has excellent hardness and oxidation resistance temperature, and improves the high temperature resistance of diamond on the PCD compact, prevents oxidation, graphitization, solvation or carbide formation, increases the sharpness of the PCD cutter, and increases the service life.
The embodiments of the present invention have been described in detail with reference to the examples, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (8)
1. A PCD cutter compact characterized by: the PCD blade is arranged on the blade substrate through high-temperature crimping; the PCD blade comprises the following materials in parts by weight:
2. a PCD cutter compact according to claim 1, wherein: the epoxy resin modified polyurethane resin also comprises 5-10 parts by weight of epoxy resin modified polyurethane resin.
3. A PCD cutter compact according to claim 2, wherein: the number average molecular weight of the epoxy resin modified polyurethane resin is 5000-50000.
4. A PCD cutter compact according to claim 1, wherein: and also comprises 12-24 parts by weight of sodium carbonate.
5. A PCD cutter compact according to claim 1, wherein: and the coating also comprises 4-7 parts by weight of hollow glass microspheres.
6. A PCD cutter compact according to claim 1, wherein: and 2-4 parts by weight of boric acid.
7. A PCD cutter compact according to claim 1, wherein: the surface layer of the PCD blade is provided with a boron layer, and the thickness of the boron layer is 10-20 mu m.
8. A PCD cutter compact according to claim 7, wherein: the boron layer is prepared by chemical vapor deposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911397831.6A CN111112657A (en) | 2019-12-30 | 2019-12-30 | PCD cutter composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911397831.6A CN111112657A (en) | 2019-12-30 | 2019-12-30 | PCD cutter composite sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111112657A true CN111112657A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911397831.6A Pending CN111112657A (en) | 2019-12-30 | 2019-12-30 | PCD cutter composite sheet |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020033282A1 (en) * | 2000-09-20 | 2002-03-21 | Griffin Nigel Dennis | Rotary drill bit |
| CN102812149A (en) * | 2010-01-11 | 2012-12-05 | 伊斯卡有限公司 | Coated cutting tool |
| CN103173761A (en) * | 2011-12-23 | 2013-06-26 | 株洲钻石切削刀具股份有限公司 | Cutting tool for improving coating structure and preparation method thereof |
| CN105195828A (en) * | 2015-10-28 | 2015-12-30 | 江苏中晟钻石工具有限公司 | High-efficiency PCD reamer |
| CN106064245A (en) * | 2015-04-23 | 2016-11-02 | 肯纳金属公司 | There is microstructure and the cutting element of nanostructured refractory material |
| CN206484042U (en) * | 2017-01-18 | 2017-09-12 | 浙江浪潮精密机械有限公司 | A kind of PCD diamonds superhard cutter |
| CN107810071A (en) * | 2015-08-05 | 2018-03-16 | 哈利伯顿能源服务公司 | The polycrystalline diamond of spark plasma sintering |
| CN108012534A (en) * | 2015-08-05 | 2018-05-08 | 哈里伯顿能源服务公司 | The polycrystalline diamond of discharge plasma sintering engagement |
-
2019
- 2019-12-30 CN CN201911397831.6A patent/CN111112657A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020033282A1 (en) * | 2000-09-20 | 2002-03-21 | Griffin Nigel Dennis | Rotary drill bit |
| CN102812149A (en) * | 2010-01-11 | 2012-12-05 | 伊斯卡有限公司 | Coated cutting tool |
| CN103173761A (en) * | 2011-12-23 | 2013-06-26 | 株洲钻石切削刀具股份有限公司 | Cutting tool for improving coating structure and preparation method thereof |
| CN106064245A (en) * | 2015-04-23 | 2016-11-02 | 肯纳金属公司 | There is microstructure and the cutting element of nanostructured refractory material |
| CN107810071A (en) * | 2015-08-05 | 2018-03-16 | 哈利伯顿能源服务公司 | The polycrystalline diamond of spark plasma sintering |
| CN108012534A (en) * | 2015-08-05 | 2018-05-08 | 哈里伯顿能源服务公司 | The polycrystalline diamond of discharge plasma sintering engagement |
| CN105195828A (en) * | 2015-10-28 | 2015-12-30 | 江苏中晟钻石工具有限公司 | High-efficiency PCD reamer |
| CN206484042U (en) * | 2017-01-18 | 2017-09-12 | 浙江浪潮精密机械有限公司 | A kind of PCD diamonds superhard cutter |
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Application publication date: 20200508 |