CN107858578A - A kind of preparation method of WC Co hard alloy - Google Patents
A kind of preparation method of WC Co hard alloy Download PDFInfo
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- CN107858578A CN107858578A CN201711397521.5A CN201711397521A CN107858578A CN 107858578 A CN107858578 A CN 107858578A CN 201711397521 A CN201711397521 A CN 201711397521A CN 107858578 A CN107858578 A CN 107858578A
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- 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
-
- 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
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- 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
Abstract
The invention discloses a kind of preparation method of WC Co hard alloy, and using WC powder as hard phase, Co powder is binding metal, is 9 according to mass ratio：(0.5 1) ball milling is carried out, with 97#Gasoline is ball-milling medium, and the material after ball milling will add butadiene rubber and be used as binder, dry after ball milling, be then sintered with two-step sintering method in the vacuum sintering furnace that vacuum is 0.1Pa, WC Co hard alloy is finally made.The hard alloy has excellent mechanics and mechanical performance, and its porosity is 0.07%, and its hardness, bending strength and fracture toughness are respectively 877MPa, 2647MPa and 21.1MPam1/2。
Description
Technical field
The present invention relates to powder metallurgical technology, and in particular to a kind of preparation method of WC-Co hard alloy.
Background technology
Traditional hard alloy is on the basis of refractory metal hard compounds, using metal as Binder Phase, uses powder metallurgy
Method be prepared.Due to Co have good wetability, surrender and processing Temperature measurement, and WC have high-melting-point, hardness,
The characteristics of chemical stability and heat endurance, so WC-Co hard alloy is widely used.Hard alloy has high hard
Degree, intensity, toughness and fabulous wearability, just in cutting, probing, mine, machining and wearing piece etc. since its appearance
Play extremely important effect.
The content of the invention
The present invention is intended to provide a kind of preparation method of WC-Co hard alloy, using WC powder as hard phase, Co powder is viscous
Knot metal, 97#Gasoline is ball-milling medium, and butadiene rubber carries out two as binder in the vacuum sintering furnace of certain vacuum degree
Step sintering, the present invention is simple to operation, and energy consumption is low, and cost is low, green, and gained WC-Co hard alloy has excellent power
To learn and mechanical performance, its porosity are 0.07-0.1%, its hardness, bending strength and fracture toughness are respectively 825-877MPa,
2586-2647MPa and 19.8-21.1MPam1/2。
The object of the invention to solve the technical problems is realized using following technical scheme.Itd is proposed according to the present invention
A kind of WC-Co hard alloy preparation method, comprise the following steps：
(1) using WC powder as hard phase, Co powder is binding metal, and than feeding and it is put into ball mill according to quality
In, with 97#Gasoline is ball-milling medium, ratio of grinding media to material 3:1, mill ball is sintered carbide ball, under nitrogen protection, with 100r/min
Speed in ball mill ball mill mixing 15h；
(2) material after ball milling will add butadiene rubber as binder continuation ball milling 30min, then by material at 50 DEG C
3h is dried in vacuum drying chamber；
(3) dried mixed-powder is cold-pressed into a diameter of 30mm under 130MPa pressure
Cylinder plate-like compaction, pressed compact is subjected to vacuum-sintering in the vacuum sintering furnace of certain vacuum degree, sintering process point
Two steps：500-600 DEG C first is warming up to 5 DEG C/min speed, is incubated 2h at such a temperature；Then again with 10 DEG C/min speed
1300-1400 DEG C is warming up to, is incubated 3h at such a temperature；Room temperature is naturally cooled to stove after the completion of sintering, that is, obtains WC-Co
Hard alloy.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
A kind of preparation method of foregoing WC-Co hard alloy, wherein, the quality of WC powder and Co powder in step (1)
Than for 9：(0.5-1).
A kind of preparation method of foregoing WC-Co hard alloy, wherein, the addition of butadiene rubber is WC in step (2)
With the 1-2% of Co gross masses.
A kind of preparation method of foregoing WC-Co hard alloy, wherein, the certain vacuum degree described in step (3) is
0.1Pa。
The method of the present invention is simple to operation, and energy consumption is low, and cost is low, green, and gained WC-Co hard alloy has
Excellent mechanics and mechanical performance, its porosity are 0.07-0.1%, and its hardness, bending strength and fracture toughness are respectively 825-
877MPa, 2586-2647MPa and 19.8-21.1MPam1/2。
Embodiment
Illustrate the present invention referring to specific embodiment.These embodiments are merely to illustrate the present invention, its not with appoint
Where formula limits the scope of the present invention.
Embodiment 1
(1) using WC powder as hard phase, Co powder is binding metal, according to mass ratio is WC by it：Co=9:1 obtains original
Expect and be put into ball mill, with 97#Gasoline is ball-milling medium, ratio of grinding media to material 3:1, mill ball is sintered carbide ball, is protected in nitrogen
Under shield, with 100r/min speed in ball mill ball mill mixing 15h；
(2) material after ball milling will add butadiene rubber as binder, and the addition of butadiene rubber is WC and Co gross masses
2%, continue ball milling 30min, then by material in 50 DEG C of vacuum drying chamber dry 3h；
(3) dried mixed-powder is cold-pressed into a diameter of 30mm cylinder plate-like compaction under 130MPa pressure, will
Pressed compact carries out vacuum-sintering in the vacuum sintering furnace that vacuum is 0.1Pa, and sintering process is in two steps：First with 5 DEG C/min speed
Rate is warming up to 600 DEG C, is incubated 2h at such a temperature；Then 1300 DEG C are warming up to 10 DEG C/min speed again, at such a temperature
It is incubated 3h；Room temperature is naturally cooled to stove after the completion of sintering, that is, obtains WC-Co hard alloy.
After tested, the porosity of gained sample is 0.1%, and its hardness, bending strength and fracture toughness are respectively 825MPa,
2586MPa and 19.8MPam1/2, the alloy sample has excellent mechanics and mechanical performance.
Embodiment 2
(1) using WC powder as hard phase, Co powder is binding metal, according to mass ratio is WC by it：Co=9:0.5 obtains
Raw material is simultaneously put into ball mill, with 97#Gasoline is ball-milling medium, ratio of grinding media to material 3:1, mill ball is sintered carbide ball, in nitrogen
Under protection, with 100r/min speed in ball mill ball mill mixing 15h；
(2) material after ball milling will add butadiene rubber as binder, and the addition of butadiene rubber is WC and Co gross masses
1%, continue ball milling 30min, then by material in 50 DEG C of vacuum drying chamber dry 3h；
(3) dried mixed-powder is cold-pressed into a diameter of 30mm cylinder plate-like compaction under 130MPa pressure, will
Pressed compact carries out vacuum-sintering in the vacuum sintering furnace that vacuum is 0.1Pa, and sintering process is in two steps：First with 5 DEG C/min speed
Rate is warming up to 500 DEG C, is incubated 2h at such a temperature；Then 1400 DEG C are warming up to 10 DEG C/min speed again, at such a temperature
It is incubated 3h；Room temperature is naturally cooled to stove after the completion of sintering, that is, obtains WC-Co hard alloy.
After tested, the porosity of gained sample is 0.08%, and its hardness, bending strength and fracture toughness are respectively
865MPa, 2696MPa and 20.8MPam1/2, the alloy sample has excellent mechanics and mechanical performance.
Embodiment 3
(1) using WC powder as hard phase, Co powder is binding metal, according to mass ratio is WC by it：Co=9:0.5 obtains
Raw material is simultaneously put into ball mill, with 97#Gasoline is ball-milling medium, ratio of grinding media to material 3:1, mill ball is sintered carbide ball, in nitrogen
Under protection, with 100r/min speed in ball mill ball mill mixing 15h；
(2) material after ball milling will add butadiene rubber as binder, and the addition of butadiene rubber is WC and Co gross masses
2%, continue ball milling 30min, then by material in 50 DEG C of vacuum drying chamber dry 3h；
(3) dried mixed-powder is cold-pressed into a diameter of 30mm under 130MPa pressure
Cylinder plate-like compaction, by pressed compact vacuum be 0.1Pa vacuum sintering furnace in carry out vacuum-sintering, sintering process
In two steps：550 DEG C first are warming up to 5 DEG C/min speed, is incubated 2h at such a temperature；Then again with 10 DEG C/min speed liter
Temperature is incubated 3h at such a temperature to 1350 DEG C；Room temperature is naturally cooled to stove after the completion of sintering, that is, obtains WC-Co hard alloy.
After tested, the porosity of gained sample is 0.07%, and its hardness, bending strength and fracture toughness are respectively
877MPa, 2647MPa and 21.1MPam1/2, the alloy sample has excellent mechanics and mechanical performance.
The above described is only a preferred embodiment of the present invention, any formal limitation not is done to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
To any simple modification, equivalent change and modification made for any of the above embodiments, in the range of still falling within technical solution of the present invention.
Claims (4)
1. a kind of preparation method of WC-Co hard alloy, it is characterised in that comprise the following steps：
(1) using WC powder as hard phase, Co powder is binding metal, and it than feeding and is put into ball mill according to quality, with
97#Gasoline is ball-milling medium, ratio of grinding media to material 3:1, mill ball is sintered carbide ball, under nitrogen protection, with 100r/min speed
Degree ball mill mixing 15h in ball mill；
(2) material after ball milling will add butadiene rubber as binder continuation ball milling 30min, then by vacuum of the material at 50 DEG C
3h is dried in drying box；
(3) dried mixed-powder is cold-pressed into a diameter of 30mm cylinder plate-like compaction under 130MPa pressure, by pressed compact
Vacuum-sintering is carried out in the vacuum sintering furnace of certain vacuum degree, sintering process is in two steps：First it is warming up to 5 DEG C/min speed
500-600 DEG C, 2h is incubated at such a temperature；Then 1300-1400 DEG C is warming up to 10 DEG C/min speed again, at such a temperature
It is incubated 3h；Room temperature is naturally cooled to stove after the completion of sintering, that is, obtains WC-Co hard alloy.
2. the preparation method of WC-Co hard alloy as claimed in claim 1, it is characterised in that WC powder and Co in step (1)
The mass ratio of powder is 9：(0.5-1).
3. the preparation method of WC-Co hard alloy as claimed in claim 1, it is characterised in that butadiene rubber in step (2)
Addition is the 1-2% of WC and Co gross masses.
4. the preparation method of WC-Co hard alloy as claimed in claim 1, it is characterised in that certain described in step (3)
Vacuum is 0.1Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397521.5A CN107858578A (en) | 2017-12-21 | 2017-12-21 | A kind of preparation method of WC Co hard alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711397521.5A CN107858578A (en) | 2017-12-21 | 2017-12-21 | A kind of preparation method of WC Co hard alloy |
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| CN107858578A true CN107858578A (en) | 2018-03-30 |
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| CN201711397521.5A Pending CN107858578A (en) | 2017-12-21 | 2017-12-21 | A kind of preparation method of WC Co hard alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584367A (en) * | 2021-08-06 | 2021-11-02 | 株洲坤锐硬质合金有限公司 | High-hardness high-toughness hard alloy and preparation method thereof |
| CN116790953A (en) * | 2023-07-05 | 2023-09-22 | 中国机械总院集团北京机电研究所有限公司 | High-performance nano hard alloy product and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186981A (en) * | 2007-12-21 | 2008-05-28 | 北京工业大学 | High-intensity high-tenacity super fine crystal WC-10Co hard alloy preparation method |
| CN101892408A (en) * | 2010-06-22 | 2010-11-24 | 株洲硬质合金集团有限公司 | Hard alloy large pipe drawing mold and preparation method |
| CN101974716A (en) * | 2010-11-23 | 2011-02-16 | 株洲硬质合金集团有限公司 | Method for manufacturing WC-Co hard alloy with coarse-grain structure |
| CN102534344A (en) * | 2012-03-14 | 2012-07-04 | 中南大学 | Extra coarse grain WC-Co hard alloy and preparation process thereof |
| CN103710604A (en) * | 2013-12-27 | 2014-04-09 | 株洲硬质合金集团有限公司 | Hard alloy, and preparation method and application thereof |
| CN104831101A (en) * | 2015-05-25 | 2015-08-12 | 江西稀有稀土金属钨业集团有限公司 | Preparation method and system of hard alloy material |
| CN106513670A (en) * | 2016-11-10 | 2017-03-22 | 株洲硬质合金集团有限公司 | Sintering method for ultrafine hard alloy |
| CN106636837A (en) * | 2017-01-23 | 2017-05-10 | 四川理工学院 | Preparation method of ultra-coarse grain WC-Co hard alloy |
-
2017
- 2017-12-21 CN CN201711397521.5A patent/CN107858578A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186981A (en) * | 2007-12-21 | 2008-05-28 | 北京工业大学 | High-intensity high-tenacity super fine crystal WC-10Co hard alloy preparation method |
| CN101892408A (en) * | 2010-06-22 | 2010-11-24 | 株洲硬质合金集团有限公司 | Hard alloy large pipe drawing mold and preparation method |
| CN101974716A (en) * | 2010-11-23 | 2011-02-16 | 株洲硬质合金集团有限公司 | Method for manufacturing WC-Co hard alloy with coarse-grain structure |
| CN102534344A (en) * | 2012-03-14 | 2012-07-04 | 中南大学 | Extra coarse grain WC-Co hard alloy and preparation process thereof |
| CN103710604A (en) * | 2013-12-27 | 2014-04-09 | 株洲硬质合金集团有限公司 | Hard alloy, and preparation method and application thereof |
| CN104831101A (en) * | 2015-05-25 | 2015-08-12 | 江西稀有稀土金属钨业集团有限公司 | Preparation method and system of hard alloy material |
| CN106513670A (en) * | 2016-11-10 | 2017-03-22 | 株洲硬质合金集团有限公司 | Sintering method for ultrafine hard alloy |
| CN106636837A (en) * | 2017-01-23 | 2017-05-10 | 四川理工学院 | Preparation method of ultra-coarse grain WC-Co hard alloy |
Non-Patent Citations (2)
| Title |
|---|
| 陈勇志等: "《机械制造工程技术基础》", 28 February 2015, 西南交通大学出版社 * |
| 黄伯云等: "《中国材料工程大典 第5卷 有色金属材料工程 下》", 31 January 2006, 化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584367A (en) * | 2021-08-06 | 2021-11-02 | 株洲坤锐硬质合金有限公司 | High-hardness high-toughness hard alloy and preparation method thereof |
| CN113584367B (en) * | 2021-08-06 | 2022-02-08 | 株洲坤锐硬质合金有限公司 | High-hardness high-toughness hard alloy and preparation method thereof |
| CN116790953A (en) * | 2023-07-05 | 2023-09-22 | 中国机械总院集团北京机电研究所有限公司 | High-performance nano hard alloy product and preparation method thereof |
| CN116790953B (en) * | 2023-07-05 | 2024-01-05 | 中国机械总院集团北京机电研究所有限公司 | High-performance nano hard alloy product and preparation method thereof |
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