CN101760686A - Hard alloy product and spray powder - Google Patents
Hard alloy product and spray powder Download PDFInfo
- Publication number
- CN101760686A CN101760686A CN201010100990A CN201010100990A CN101760686A CN 101760686 A CN101760686 A CN 101760686A CN 201010100990 A CN201010100990 A CN 201010100990A CN 201010100990 A CN201010100990 A CN 201010100990A CN 101760686 A CN101760686 A CN 101760686A
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- CN
- China
- Prior art keywords
- tungsten carbide
- cast tungsten
- powder
- hard metal
- metal article
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000843 powder Substances 0.000 title claims abstract description 59
- 239000007921 spray Substances 0.000 title claims abstract 4
- 239000000956 alloy Substances 0.000 title abstract 4
- 229910045601 alloy Inorganic materials 0.000 title abstract 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 238000005507 spraying Methods 0.000 claims description 28
- 239000011159 matrix material Substances 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 238000005266 casting Methods 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 238000000227 grinding Methods 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000016768 molybdenum Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a hard alloy product with cast tungsten carbide as well as spray powder. The hard alloy product comprises not less than 50 percent or less than 100 percent by weight of cast tungsten carbide and more than 0 percent and not more than 50 percent by weight of binding metal. As the cast tungsten carbide has higher strength and excellent wear-resisting performance, the hard alloy and the spray powder have higher hardness and wear-resisting performance.
Description
Technical field
The present invention relates to hard metal article and spraying powder, be specifically related to the hard metal article and the spraying powder of high rigidity and wear resisting property excellence.
Background technology
At present, little and hardness is high owing to common wolfram varbide (molecular formula is WC) median size has higher hardness and a fusing point, usually use common wolfram varbide to make hard metal article and spraying powder, thereby be used for the product that cutter, sparking plug, engine coatings etc. need high rigidity, excellent in abrasion resistance as main raw material.Along with further raising, need new hard metal article and spraying powder to product hardness and wear resisting property requirement.
Summary of the invention
The object of the present invention is to provide a kind of high rigidity hard metal article, a kind of spraying powder of wear resisting property excellence also is provided.
According to an aspect of the present invention, provide a kind of hard metal article, described hard metal article comprises more than or equal to 50wt% and less than the cast tungsten carbide of 100wt%, and greater than 0wt% and smaller or equal to the matrix metal of 50wt%.
Wherein, based on the gross weight of described hard metal article, the content of described cast tungsten carbide is preferably 70～94wt%.
Wherein, the median size that is used to form the described cast tungsten carbide of described hard metal article is below the 5 μ m.
Wherein, described matrix metal comprises and is selected from least a among Co, Ni, Cr, Fe and the Cu.
According to an aspect of the present invention, provide a kind of spraying powder, described spraying powder comprises more than or equal to 50wt% and less than the cast tungsten carbide of 100wt%, and greater than 0wt% and smaller or equal to the matrix metal of 50wt%.
Wherein, based on the gross weight of described spraying powder, the content of described cast tungsten carbide is preferably 70～94wt%.
Wherein, the median size that is used to form the described cast tungsten carbide of described spraying powder is below the 5 μ m.
Wherein, described matrix metal comprises and is selected from least a among Co, Ni, Cr, Fe and the Cu.
According to the present invention, the use casting tungsten carbide powder replaces the common wolfram varbide in traditional Wimet, because cast tungsten carbide is that (molecular formula is WC-W to eutectic structure
2C), have higher hardness and wear resisting property, particularly use the fine granularity casting tungsten carbide powder, the casting tungsten carbide powder of median size below 5 μ m for example, thus the cast tungsten carbide hard metal article of high rigidity and the cast tungsten carbide spraying powder of wear resisting property excellence can be provided.In addition, the production technique of cast tungsten carbide hard metal article and cast tungsten carbide spraying powder is simple, remarkable in economical benefits.
Embodiment
To further describe embodiments of the present invention below.
The invention provides a kind of hard metal article, hard metal article comprises more than or equal to 50wt% and less than the cast tungsten carbide of 100wt%, and greater than 0wt% and smaller or equal to the matrix metal of 50wt%.Along with the increase of cast tungsten carbide content in the cast tungsten carbide Wimet, the hardness of hard metal article and wear resisting property strengthen, and still along with the continuous minimizing of bonding phase, the toughness of hard metal article and bending strength performance reduce.In order to make hard metal article obtain good performance balance, based on the gross weight of hard metal article, the content of cast tungsten carbide is preferably 70～94wt%.
The median size that is used to form the cast tungsten carbide of hard metal article is preferably below the 5 μ m, when the median size of cast tungsten carbide is 5 μ m when following, can further form dense structure, thereby more high rigidity is provided.
The kind of matrix metal is not particularly limited, as long as have adhesive property and improve binding ability between the casting tungsten carbide powder.But consider and cast tungsten carbide between performance balance, preferably include and be selected from least a among Co, Ni, Cr, Fe and the Cu.
The present invention also provides a kind of spraying powder, and the spraying powder comprises more than or equal to 50wt% and less than the cast tungsten carbide of 100wt%, and greater than 0wt% and smaller or equal to the matrix metal of 50wt%.Along with the increase of cast tungsten carbide content in the cast tungsten carbide Wimet, the hardness of hard metal article and wear resisting property strengthen, and still along with the continuous minimizing of bonding phase, the toughness of hard metal article and bending strength performance reduce.In order to make hard metal article obtain good performance balance, based on the gross weight of hard metal article, the content of cast tungsten carbide is preferably 70～94wt%.
The median size of cast tungsten carbide that is used to form the spraying powder is preferably below the 5 μ m, when the median size of cast tungsten carbide is 5 μ m when following, can further form dense structure, thereby more excellent abrasive energy is provided.
The kind of matrix metal is not particularly limited, as long as have adhesive property and improve binding ability between the casting tungsten carbide powder.But consider and cast tungsten carbide between performance balance, preferably include and be selected from least a among Co, Ni, Cr, Fe and the Cu.
Below, further specify the present invention by specific embodiment.
[embodiment]
The preparation of ultra-fine casting tungsten carbide powder
Raw material is put into the ultra-fine agitating ball mill of Attritor (the ball grinding cylinder volume 70L that model is ZJM-65 for the 45-106um cast tungsten carbide, ball grinding cylinder internal diameter 65cm, motor power (output) 11KW), adopting the agitation grinding mode to carry out 2h grinds, under the running up of agitating arm, by shearing force between powder and the abrading-ball and pressure, casting tungsten carbide powder is ruptured repeatedly, thereby obtain the casting tungsten carbide powder of median size below 5um.
Embodiment 1
After matrix metal Fe, the Co of the casting tungsten carbide powder of the preparation of 85wt% and 15wt% and Ni powder (weight ratio of Fe, Co and Ni is 1: 19: 16) mixed, in compression moulding under the 15Mpa pressure and under 1420 ℃ temperature, carry out sintering, thereby obtain the hard metal article of cast tungsten carbide.
Embodiment 2
Prepare the cast tungsten carbide hard metal article with the method identical with embodiment 1, difference is that the matrix metal Co powder with the casting tungsten carbide powder of the preparation of 88wt% and 12wt% replaces the casting tungsten carbide powder of preparation of 85wt% and matrix metal Fe, Co, the Ni powder of 15wt%.
Embodiment 3
The casting tungsten carbide powder of the preparation of 86wt% is mixed with the Co powder of 10wt% and the Cr powder of 4wt%, then the mixture that makes is made slurry and carried out spraying drying, thereby obtain the spraying powder of cast tungsten carbide.
Embodiment 4
Prepare the spraying powder of cast tungsten carbide with the method identical with embodiment 3, difference is to replace with the Co powder of the casting tungsten carbide powder of the preparation of 88wt% and 12wt% casting tungsten carbide powder and the Co powder of 10wt% and the Cr powder of 4wt% of the preparation of 86wt%.
Comparative Examples 1
Prepare the hard metal article of common wolfram varbide with the method identical with embodiment 1, difference is that (the two aigret molybdenums industry in Weinan company limited produces WC40: median size 4-5 μ m) replace the ultra-fine casting tungsten carbide powder for preparing with common tungsten carbide powder.
Comparative Examples 2
Prepare the spraying powder of common wolfram varbide (the same) with the method identical with embodiment 3, difference is to replace the casting tungsten carbide powder for preparing with common tungsten carbide powder.
Experimental example 1
With hardness-testing device the hard metal article that makes in embodiment 1～2 and the Comparative Examples 1 is carried out hardness test, its measurement result is shown in the following table 1.
Table 1
| Hardness (Kg/mm 2) | |
| Embodiment 1 | ??2148 |
| Embodiment 2 | ??2180 |
| Comparative Examples 1 | ??1700 |
As shown in Table 1, compare with the Comparative Examples 1 of common carboloy, the hardness of the cast tungsten carbide hard metal article among the embodiment 1 and 2 obviously improves, and hardness has improved about 20～30%.
Experimental example 2
According to the spraying powder that makes in damp sand erosive wear measuring embodiment 3～4 and the Comparative Examples 2, its measurement result is shown in the following table 2.
Table 2
| 30 ° of erosion rates (mg/g) | |
| Embodiment 3 | ??0.016 |
| Embodiment 4 | ??0.018 |
| Comparative Examples 2 | ??0.026 |
As shown in Table 2, compare with the Comparative Examples 2 of common carboloy, the wear resisting property of the cast tungsten carbide spraying powder among the embodiment 3 and 4 obviously improves, and wear resisting property has improved about 30～40%.
Therefore, according to the present invention, the use casting tungsten carbide powder replaces the common wolfram varbide in traditional Wimet, because cast tungsten carbide has higher hardness and wear resisting property, thereby can provide the cast tungsten carbide hard metal article of high rigidity and the cast tungsten carbide spraying powder of wear resisting property excellence.In addition, the production technique of cast tungsten carbide hard metal article and cast tungsten carbide spraying powder is simple, remarkable in economical benefits.
Claims (8)
1. hard metal article comprises:
More than or equal to 50wt% and less than the cast tungsten carbide of 100wt%; With
Greater than 0wt% and smaller or equal to the matrix metal of 50wt%.
2. hard metal article according to claim 1, wherein, based on the gross weight of described hard metal article, the content of described cast tungsten carbide is 70～94wt%.
3. hard metal article according to claim 1, wherein, the median size that is used to form the described cast tungsten carbide of described hard metal article is below the 5 μ m.
4. hard metal article according to claim 1, wherein, described matrix metal is to comprise being selected from least a among Co, Ni, Cr, Fe and the Cu.
5. one kind sprays powder, comprising:
More than or equal to 50wt% and less than the cast tungsten carbide of 100wt%; With
Greater than 0wt% and smaller or equal to the matrix metal of 50wt%.
6. spraying powder according to claim 5, wherein, based on the gross weight of described spraying powder, the content of described cast tungsten carbide is 70～94wt%.
7. spraying powder according to claim 5, wherein, the median size that is used to form the described cast tungsten carbide of described spraying powder is below the 5 μ m.
8. spraying powder according to claim 5, wherein, described matrix metal comprises and is selected from least a among Co, Ni, Cr, Fe and the Cu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101009908A CN101760686B (en) | 2010-01-25 | 2010-01-25 | Hard alloy product and spray powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101009908A CN101760686B (en) | 2010-01-25 | 2010-01-25 | Hard alloy product and spray powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101760686A true CN101760686A (en) | 2010-06-30 |
| CN101760686B CN101760686B (en) | 2011-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101009908A Expired - Fee Related CN101760686B (en) | 2010-01-25 | 2010-01-25 | Hard alloy product and spray powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101760686B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061419A (en) * | 2010-12-20 | 2011-05-18 | 中南大学 | Hard alloy material taking Co-Cu as bonding phase and preparation method thereof |
| CN102242331A (en) * | 2011-06-23 | 2011-11-16 | 奥美合金材料科技(北京)有限公司 | Spray coating powder with excellent toughness |
| CN102424970A (en) * | 2011-12-05 | 2012-04-25 | 嘉鱼县海鑫合金制造有限公司 | Technology for preparing hard alloy coating on surface of wear resistant part with powder metallurgy method |
| CN107557637A (en) * | 2017-08-11 | 2018-01-09 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline diamond complex |
| CN109234599A (en) * | 2018-11-22 | 2019-01-18 | 江苏苏鑫管夹制造有限公司 | A kind of High Performance W alloy bar and preparation method thereof |
| CN110216397A (en) * | 2019-06-12 | 2019-09-10 | 自贡长城硬面材料有限公司 | Antifriction alloy powder and its preparation method of application, wear-resisting layer |
| CN115255355A (en) * | 2022-07-22 | 2022-11-01 | 株洲托普硬质合金材料有限公司 | Preparation method of high-wear-resistance thermal spraying powder |
-
2010
- 2010-01-25 CN CN2010101009908A patent/CN101760686B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061419A (en) * | 2010-12-20 | 2011-05-18 | 中南大学 | Hard alloy material taking Co-Cu as bonding phase and preparation method thereof |
| CN102061419B (en) * | 2010-12-20 | 2012-10-17 | 中南大学 | Hard alloy material taking Co-Cu as bonding phase and preparation method thereof |
| CN102242331A (en) * | 2011-06-23 | 2011-11-16 | 奥美合金材料科技(北京)有限公司 | Spray coating powder with excellent toughness |
| CN102242331B (en) * | 2011-06-23 | 2016-04-27 | 奥美合金材料科技(北京)有限公司 | A kind of spray coating powder with excellent in toughness |
| CN102424970A (en) * | 2011-12-05 | 2012-04-25 | 嘉鱼县海鑫合金制造有限公司 | Technology for preparing hard alloy coating on surface of wear resistant part with powder metallurgy method |
| CN107557637A (en) * | 2017-08-11 | 2018-01-09 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline diamond complex |
| CN107557637B (en) * | 2017-08-11 | 2019-04-16 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline diamond complex |
| CN109234599A (en) * | 2018-11-22 | 2019-01-18 | 江苏苏鑫管夹制造有限公司 | A kind of High Performance W alloy bar and preparation method thereof |
| CN110216397A (en) * | 2019-06-12 | 2019-09-10 | 自贡长城硬面材料有限公司 | Antifriction alloy powder and its preparation method of application, wear-resisting layer |
| CN115255355A (en) * | 2022-07-22 | 2022-11-01 | 株洲托普硬质合金材料有限公司 | Preparation method of high-wear-resistance thermal spraying powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101760686B (en) | 2011-08-10 |
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Inventor after: Zhu Mingsheng Inventor after: Wei Hongtao Inventor before: Zhu Mingsheng |
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Effective date of registration: 20170721 Address after: 100097, Beijing Haidian District beautiful garden district 8 Floor 2 door Co-patentee after: Wei Hongtao Patentee after: Zhu Mingsheng Address before: 100080 Beijing Haidian District Suzhou Street No. 18 long term world B2-507 Patentee before: Zhu Mingsheng |
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Effective date of registration: 20170901 Address after: 065560 Langfang city Hebei town of Guan County of Guan Province Yu Jing Road Tongyu Garden District 1 Building 5 unit Patentee after: Wei Hongtao Address before: 100097, Beijing Haidian District beautiful garden district 8 Floor 2 door Co-patentee before: Wei Hongtao Patentee before: Zhu Mingsheng |
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Granted publication date: 20110810 Termination date: 20190125 |
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