CN114480937A - Multi-element tungsten carbide hard alloy material, drill bit and preparation method thereof - Google Patents
Multi-element tungsten carbide hard alloy material, drill bit and preparation method thereof Download PDFInfo
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- CN114480937A CN114480937A CN202210143226.1A CN202210143226A CN114480937A CN 114480937 A CN114480937 A CN 114480937A CN 202210143226 A CN202210143226 A CN 202210143226A CN 114480937 A CN114480937 A CN 114480937A
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- tungsten carbide
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- carbide powder
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Links
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000000956 alloy Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 68
- 239000002245 particle Substances 0.000 claims abstract description 19
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 38
- 238000012216 screening Methods 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 19
- 239000011150 reinforced concrete Substances 0.000 abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 abstract description 2
- 239000010937 tungsten Substances 0.000 abstract description 2
- -1 tungsten carbides Chemical class 0.000 abstract description 2
- 238000013467 fragmentation Methods 0.000 abstract 1
- 238000006062 fragmentation reaction Methods 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 9
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Drilling Tools (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a multi-element tungsten carbide hard alloy material, a drill bit and a preparation method thereof, wherein the hard alloy material comprises the following components in parts by weight: 13-19 parts of 20-type tungsten carbide powder, 36-40 parts of 70-type tungsten carbide powder, 36-42 parts of 100-type tungsten carbide powder, 8.0-8.5 parts of cobalt powder Co, and different FSSS particle sizes of the 20-type tungsten carbide powder, the 70-type tungsten carbide powder and the 100-type tungsten carbide powder, and a multi-element WC structure is formed by matching and using various tungsten carbide powders, wherein the alloy magnetic saturation is controlled to be 85% -95%. The invention solves the problems of easy fragmentation and non-wear resistance of alloy, unstable punching and even cutter breakage in the drilling process of reinforced concrete by matching various tungsten carbides.
Description
Technical Field
The invention relates to a high-strength and high-toughness multi-element tungsten carbide hard alloy material for drilling reinforced concrete, a preparation method thereof and a drill bit made of the hard alloy material.
Background
The impact drill in the hardware tool industry is suitable for drilling holes in brittle and hard materials such as ceramics, glass, granite, ceramic tiles, brick walls, reinforced concrete and the like, the material is a hard alloy tool bit, the hard alloy tool bit needs to be welded on a steel tool bar and then is arranged on an electric hand drill or an electric hammer for use, and a coolant (common water, turpentine or gasoline) needs to be added during drilling. The tool is used for accurate centering drilling, high-temperature copper welding hard alloy tool bits, straight drill handles and surface cladding of drill bits.
Drill bits for machining very hard materials, such as hardened steel, chilled cast iron, fibre-reinforced composites, rock, concrete, etc., usually comprise a steel shank which is provided with a cutting edge or a complete drilling crown made of cemented carbide by joining, preferably by means of brazing or welding. Such a cutting edge or crown is suitable, on account of its high hardness and high wear resistance of the cemented carbide, for breaking up hard material and also for partially machining hard material in order to thereby achieve material removal overall. The effective power of the drill bit is determined primarily by the material properties of the cemented carbide. The methods for increasing the effective power of cemented carbide cutting edges have hitherto been limited to the geometry of the cutting edge, the structure of the cemented carbide in terms of material composition and grain size, etc., and to the maintenance of advantageous drilling parameters.
Carbide cutting edges face the following problems during drilling with a complex load due to partially conflicting requirements for optimizing the material: the loads of the cutting edge due to the high-impact, such as those occurring during impact drilling, require a sufficient material toughness in order to avoid brittle fractures in the cutting edge. Conversely, the ability to withstand high abrasive loads when working hard materials requires a high cemented carbide hardness. There is clearly a limit to the effort to further optimize the properties of both materials by the traditional methods of material development at the same time. Great progress will no longer be expected here, since the material is considered to be developed to a considerable extent.
A method for manufacturing a cutting tool is known from 19905735a1, which involves coating the tip of a drilling tool with a layer of hard material. The aim is to improve the adhesion between the drilling tool and the hard material layer. For this purpose, it is proposed that the drilling tool and in particular the drilling tip be subjected to a micro-blasting prior to the coating process. For this purpose, particles with sharp edges made of aluminum oxide with a particle size of between 5 μm and 50 μm are used as the ejection medium. The surface roughness is increased by microjets, which in turn contribute to improving the adhesion of the hard material layer to be subsequently applied to the rough surface, preferably made during the PVD process. These measures are known. The tool described in this publication therefore relates to a cutting tool which during sliding on a workpiece surface to be machined leads to the desired amount of material removal. In principle, such tools are subjected to much smaller and different mechanical loads than in the case of drilling tools.
The drill bits supplied in the current market are uneven in material and poor in toughness, and in the drilling process, the phenomena of large notch resistance, easy cracking and wearing resistance of alloy, unstable drilling, even cutter breakage and the like often occur. The conventional drill bit for facing reinforced concrete adopts single tungsten carbide WC (wolfram carbide), namely only one type of WC is adopted, and the formed drill bit has limited hardness and toughness due to a single structure.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-element tungsten carbide hard alloy material, a drill bit and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the multi-element tungsten carbide hard alloy material comprises the following components in parts by weight:
13-19 parts of 20 type tungsten carbide powder WC, 36-40 parts of 70 type tungsten carbide powder WC, 36-42 parts of 100 type tungsten carbide powder WC, 8.0-8.5 parts of cobalt powder Co, and different FSSS particle sizes of the 20 type tungsten carbide powder WC, the 70 type tungsten carbide powder WC and the 100 type tungsten carbide powder WC, wherein a multi-element WC structure is formed by matching and using various tungsten carbide powders, and the alloy magnetic saturation is controlled to be 85% -95%.
The FSSS granularity of the 20 type tungsten carbide powder WC is smaller than that of the 70 type tungsten carbide powder WC, and the FSSS granularity of the 70 type tungsten carbide powder WC is smaller than that of the 100 type tungsten carbide powder WC.
The FSSS particle size of the 20-type tungsten carbide powder WC is selected to be in the range of 1.0-1.4 mu m.
The FSSS particle size of the 70 type tungsten carbide powder WC is selected to be in the range of 6.5-7.5 μm.
The FSSS particle size of the 100 type tungsten carbide powder WC is selected to be in the range of 10-12 μm.
The FSSS particle size of the cobalt powder Co is selected to be in the range of 1.0-1.5 mu m.
A preparation method of a multi-element tungsten carbide hard alloy material comprises the following steps:
mixing 20 type tungsten carbide powder WC, 70 type tungsten carbide powder WC, 100 type tungsten carbide powder WC and cobalt powder Co together according to a set weight part ratio to form a mixed material;
grinding the mixed materials, and screening through a screening net with a corresponding mesh number to filter out unqualified materials and impurities;
pressing and forming to obtain a semi-finished product;
and putting the pressed semi-finished product into a sintering furnace, performing high-temperature pressure sintering under the inert atmosphere condition, and cooling to obtain the high-strength and high-toughness hard alloy material.
The drill bit is prepared and molded by adopting the multi-element tungsten carbide hard alloy material.
The wear resistance and toughness of the drill bit made of the hard alloy material are effectively improved by utilizing the matching combination of various tungsten carbides, so that the alloy cannot easily crack and wear in the drilling process of reinforced concrete, the drilling is more stable, the problems of cutter breakage and the like are not easily caused, and the product quality is improved.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example one
The multi-element tungsten carbide hard alloy material comprises the following components in parts by weight: 13 parts of 20-type tungsten carbide powder WC, 36 parts of 70-type tungsten carbide powder WC, 36 parts of 100-type tungsten carbide powder WC and 8.0 parts of cobalt powder Co, wherein the FSSS granularity of the 20-type tungsten carbide powder WC20 is selected to be 1.0 mu m, the FSSS granularity of the 70-type tungsten carbide powder WC is selected to be 6.5 mu m, the FSSS granularity of the 100-type tungsten carbide powder WC is selected to be 10 mu m, and the alloy magnetic saturation is controlled to be 85%. The combination of different Fisher particle size ranges and the matching of the cobalt content are adjusted, and the particle size range of the cobalt powder FSSS is strictly controlled to be 1.0 mu m, so that a multi-element WC structure is formed. The combination of this many units tungsten carbide powder compares single tungsten carbide powder, can play the interordination, promotes the holistic performance of material.
During preparation, 20 type tungsten carbide powder WC, 70 type tungsten carbide powder WC, 100 type tungsten carbide powder WC and cobalt powder Co are mixed together according to the set weight part ratio to form a mixed material;
grinding the mixed materials, and screening through a screening net with a corresponding mesh number to filter out unqualified materials and impurities;
pressing and forming to obtain a semi-finished product;
and putting the pressed semi-finished product into a sintering furnace, performing high-temperature pressure sintering under the inert atmosphere condition, and cooling to obtain the high-strength and high-toughness hard alloy material.
The hard alloy material prepared by mixing the materials has higher toughness and wear resistance.
The hard alloy material can be made into a drill bit mainly facing to concrete drilling and is pressed and molded by a corresponding mold. The drill bit is not easy to break and wear in the using process, and the service life is prolonged.
Example two
The multi-element tungsten carbide hard alloy material comprises the following components in parts by weight: 15.6 parts of 20-type tungsten carbide powder WC, 39.5 parts of 70-type tungsten carbide powder WC, 36.7 parts of 100-type tungsten carbide powder WC and 8.2 parts of cobalt powder Co, wherein the FSSS granularity of the 20-type tungsten carbide powder WC20 is selected to be 1.2 mu m, the FSSS granularity of the 70-type tungsten carbide powder WC is selected to be 7.1 mu m, the FSSS granularity of the 100-type tungsten carbide powder WC is selected to be 11 mu m, and the alloy magnetic saturation is controlled to be 90%. The combination of different Fisher particle size ranges and the matching of the cobalt content are adjusted, and the particle size range of the cobalt powder FSSS is strictly controlled to be 1.2 mu m, so that a multi-element WC structure is formed. The combination of this many units tungsten carbide powder compares single tungsten carbide powder, can play the interordination, promotes the holistic performance of material.
EXAMPLE III
The multi-element tungsten carbide hard alloy material comprises the following components in parts by weight: 18.3 parts of 20-type tungsten carbide powder WC, 36.6 parts of 70-type tungsten carbide powder WC, 36.6 parts of 100-type tungsten carbide powder WC and 8.5 parts of cobalt powder Co, wherein the FSSS granularity of the 20-type tungsten carbide powder WC20 is selected to be 1.4 microns, the FSSS granularity of the 70-type tungsten carbide powder WC is selected to be 7.5 microns, the FSSS granularity of the 100-type tungsten carbide powder WC is selected to be 12 microns, and the alloy magnetic saturation is controlled to be 90%. The combination of different Fisher particle size ranges and the matching of the cobalt content are adjusted, and the particle size range of the cobalt powder FSSS is strictly controlled to be 1.5 mu m, so that a multi-element WC structure is formed. The combination of this many units tungsten carbide powder compares single tungsten carbide powder, can play the interordination, promotes the holistic performance of material.
Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements, and the like can be made in the technical solutions of the foregoing embodiments or in some of the technical features of the foregoing embodiments, but those modifications, equivalents, improvements, and the like are all within the spirit and principle of the present invention.
Claims (8)
1. The multi-element tungsten carbide hard alloy material is characterized by comprising the following components in parts by weight:
13-19 parts of 20 type tungsten carbide powder WC, 36-40 parts of 70 type tungsten carbide powder WC, 36-42 parts of 100 type tungsten carbide powder WC, 8.0-8.5 parts of cobalt powder Co, and different FSSS particle sizes of the 20 type tungsten carbide powder WC, the 70 type tungsten carbide powder WC and the 100 type tungsten carbide powder WC, wherein a multi-element WC structure is formed by matching and using various tungsten carbide powders, and the alloy magnetic saturation is controlled to be 85% -95%.
2. The cemented tungsten carbide material of claim 1, wherein the type 20 tungsten carbide powder WC has a FSSS particle size smaller than that of the type 70 tungsten carbide powder WC, and the type 70 tungsten carbide powder WC has a FSSS particle size smaller than that of the type 100 tungsten carbide powder WC.
3. The cemented tungsten carbide material of claim 2, wherein the FSSS grain size of the type 20 tungsten carbide powder WC is selected in the range of 1.0-1.4 μm.
4. The cemented tungsten carbide material of claim 3, wherein the FSSS grain size of the type 70 tungsten carbide powder WC is selected in the range of 6.5-7.5 μm.
5. The cemented tungsten carbide material of claim 4, wherein the FSSS particle size of the type 100 tungsten carbide powder WC is selected in the range of 10-12 μm.
6. The cemented tungsten carbide material of claim 5, wherein the FSSS particle size of the cobalt powder Co is selected in the range of 1.0-1.5 μm.
7. The method for preparing the multi-element tungsten carbide hard alloy material according to claim 6, which is characterized by comprising the following steps:
mixing 20 type tungsten carbide powder WC, 70 type tungsten carbide powder WC, 100 type tungsten carbide powder WC and cobalt powder Co together according to a set weight part ratio to form a mixed material;
grinding the mixed materials, and screening through a screening net with a corresponding mesh number to filter out unqualified materials and impurities;
pressing and forming to obtain a semi-finished product;
and putting the pressed semi-finished product into a sintering furnace, performing high-temperature pressure sintering under the inert atmosphere condition, and cooling to obtain the high-strength and high-toughness hard alloy material.
8. A drill bit, characterized in that a molding is prepared by using the multiple tungsten carbide cemented carbide material according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143226.1A CN114480937A (en) | 2022-02-16 | 2022-02-16 | Multi-element tungsten carbide hard alloy material, drill bit and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210143226.1A CN114480937A (en) | 2022-02-16 | 2022-02-16 | Multi-element tungsten carbide hard alloy material, drill bit and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114480937A true CN114480937A (en) | 2022-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210143226.1A Pending CN114480937A (en) | 2022-02-16 | 2022-02-16 | Multi-element tungsten carbide hard alloy material, drill bit and preparation method thereof |
Country Status (1)
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070079992A1 (en) * | 2005-10-11 | 2007-04-12 | Baker Hughes Incorporated | System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials |
| CN101338384A (en) * | 2007-07-06 | 2009-01-07 | 湖南世纪特种合金有限公司 | Method for preparing heterogeneous texture cemented carbide |
| CN102071347A (en) * | 2011-01-26 | 2011-05-25 | 株洲力洲硬质合金有限公司 | Method for preparing hard alloy materials |
| CN103614604A (en) * | 2013-12-16 | 2014-03-05 | 重庆市科学技术研究院 | Hard alloy for rotary drilling cutting drill bit for mining and preparation method of hard alloy |
| JP2014105353A (en) * | 2012-11-27 | 2014-06-09 | Sumitomo Electric Ind Ltd | Wc-based hard metal alloy and cutting tool |
| CN103882275A (en) * | 2014-04-04 | 2014-06-25 | 株洲硬质合金集团有限公司 | Toughened hard alloy and preparation method thereof |
| CN106399796A (en) * | 2016-12-15 | 2017-02-15 | 浙江鸿峰硬质合金有限公司 | Hard alloy as well as preparation method thereof and alloy tool bit |
-
2022
- 2022-02-16 CN CN202210143226.1A patent/CN114480937A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070079992A1 (en) * | 2005-10-11 | 2007-04-12 | Baker Hughes Incorporated | System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials |
| CN101338384A (en) * | 2007-07-06 | 2009-01-07 | 湖南世纪特种合金有限公司 | Method for preparing heterogeneous texture cemented carbide |
| CN102071347A (en) * | 2011-01-26 | 2011-05-25 | 株洲力洲硬质合金有限公司 | Method for preparing hard alloy materials |
| JP2014105353A (en) * | 2012-11-27 | 2014-06-09 | Sumitomo Electric Ind Ltd | Wc-based hard metal alloy and cutting tool |
| CN103614604A (en) * | 2013-12-16 | 2014-03-05 | 重庆市科学技术研究院 | Hard alloy for rotary drilling cutting drill bit for mining and preparation method of hard alloy |
| CN103882275A (en) * | 2014-04-04 | 2014-06-25 | 株洲硬质合金集团有限公司 | Toughened hard alloy and preparation method thereof |
| CN106399796A (en) * | 2016-12-15 | 2017-02-15 | 浙江鸿峰硬质合金有限公司 | Hard alloy as well as preparation method thereof and alloy tool bit |
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