CN102808095B - Tungsten carbide titanium tantalum hafnium solid solution powder - Google Patents
Tungsten carbide titanium tantalum hafnium solid solution powder Download PDFInfo
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- CN102808095B CN102808095B CN201210250268.1A CN201210250268A CN102808095B CN 102808095 B CN102808095 B CN 102808095B CN 201210250268 A CN201210250268 A CN 201210250268A CN 102808095 B CN102808095 B CN 102808095B
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Abstract
The invention belongs to the field of preparation of novel materials, and specifically provides tungsten carbide titanium tantalum hafnium solid solution powder. A preparation method of the solid solution powder comprises the following steps of: mixing 22-26 parts by weight of tungsten carbide, 30-35 parts by weight of titanium dioxide, 50-55 parts by weight of tantalum oxide, 3-6 parts by weight of hafnium oxide and 24-26 parts by weight of carbon black; carbonizing the mixed material in a high-temperature horizontal carbon tube furnace at 1,800-2,200 DEG C for 1-2 hours; cooling to obtain a blocky tungsten carbide titanium tantalum hafnium solid solution; and performing ball milling to obtain single-phase tungsten carbide titanium tantalum hafnium solid solution powder of which the Fsss granularity is 1.5-4 microns. Due to the adoption of the tungsten carbide titanium tantalum hafnium solid solution powder, the high temperature resistance of a hard alloy can be improved.
Description
Technical field
The invention belongs to field of new material preparation, the tungsten carbide tantalum hafnium solid-solution powder that adopts the material method that evenly mixing combines with high temperature cabonization to produce.
Background technology
Cemented carbide cutting tool cutting during steel due to the improving constantly and the raising of cutting speed of processed material hardness, the high-temperature behavior of alloy is also had higher requirement.In prior art, normally add (Ta, Nb) C to carbide chip, one of its effect: as Wimet grain growth inhibitor, after adding (Ta, Nb) C, can stop hard alloy sintering process in the growing up of crystal grain; Two of its effect, is the 3rd disperse phase forming together with TiC except WC and Co, significantly increases the heat shock resistance of Wimet, and heat resistanceheat resistant is pressed and oxidation resistant ability and the hot hardness that improves Wimet.
Due to severe with applied environment of improving constantly of application requiring, the metallographic structure of Wimet is more even, more tiny, and the resistance to elevated temperatures of Wimet is had higher requirement.The solid-solution powder that development makes new advances, makes Wimet have higher resistance to elevated temperatures, has great importance.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is to a kind of tungsten carbide tantalum hafnium solid-solution powder, this tungsten carbide tantalum hafnium solid-solution powder is single-phase, preparation method is simple, and this tungsten carbide tantalum hafnium solid-solution powder can improve the high-temperature behavior of Wimet.
For achieving the above object, technical scheme of the present invention is:
A tungsten carbide tantalum hafnium solid-solution powder, its preparation method is:
A, calculating by weight, mix the hafnia of 3 parts-6 parts of the oxygen tantalum ﹑ of 50 parts-55 parts of the two oxygen titanium ﹑ of 30 parts-35 parts of the carbon tungsten ﹑ of 22 parts-26 parts with the carbon black of 24 parts-26 parts, then mixed material packed in graphite boat and compress;
B, the graphite boat that installs material is pushed in high-temperature horizontal carbon tube furnace and carries out carbonization, 1800 ℃ ~ 2200 ℃ of carbonization temperatures, pushing away the boat time is every boat 20 ~ 40 minutes, the high temperature cabonization time is 1 ~ 2 hour; Then cooling 3 ~ 6 hours, obtain block tungsten carbide tantalum hafnium sosoloid;
C, by block tungsten carbide tantalum hafnium sosoloid ball milling, obtain Fsss granularity and be the single-phase tungsten carbide tantalum hafnium solid-solution powder of 1.5 microns～4 microns.
Described in step a, mix and preferably adopt bipyramid blender, mixing time is 4h-8h, and batch mixing amount is 100-300kg/ stove.
High temperature cabonization described in step b is usingd CO that reaction produces as self-shield gas, prevents the infiltration of air.
The quality percentage composition of the impurity of described Er Yangization Tai ﹑ tantalum oxide and hafnia requires: Fe:<0.05%, Ca:<0.01%, Al<0.01%, Si<0.02%, Na<0.01%.
Below the present invention will be further explained:
Ultimate principle of the present invention is: Er Yangization Tai ﹑ Yangization Tan ﹑ hafnia reacts with carbon black and is stable chemical reaction, and reactive chemistry equation is:
TiO
2+3C=TiC+2CO↑
Ta
2O
5+7C=2TaC+5CO↑
HfO
2+3C=HfC+2CO↑
Above three chemical reactions all produce a large amount of CO gas, as self-protective gas.
In addition at high temperature, WC, TiC, there is solid solution reaction in TaC and HfC, forms single-phase tungsten carbide tantalum hafnium sosoloid, reacts as following equation:
WC+TiC+TaC+HfC=（W，Ti，Ta，Hf）C
Compared with prior art, advantage of the present invention is:
1, tungsten carbide tantalum hafnium solid-solution powder main application fields is cutting steel cutter Wimet, and its effect significantly increases the thermal shock resistance of Wimet and improves the hot hardness of Wimet.
2, preparation method's flow process of tungsten carbide tantalum hafnium solid-solution powder is short, operation is easy to realize, less investment.
Embodiment
For a better understanding of the present invention, below in conjunction with embodiment, the present invention is done further and described in detail, but the scope of protection of present invention is not limited to the scope that embodiment represents.
embodiment 1:
To purchase 3.38 kilograms of hafnia of 53.8 kilograms of oxygen tantalum ﹑ of 33.3 kilogram of two oxygen titanium ﹑ of available 25 kilograms of carbon tungsten ﹑ mixes after 5 hours with 25.79 kilograms of carbon blacks, packing graphite boat into compresses, enter the carbonization of pyrocarbon pipe furnace, pushing away the boat time is every boat 35 minutes, carbonization temperature is 2050 ℃, after carbonization 1.5 hours, then go out boat ball milling after cooling 4 hours, obtain Fsss granularity and be the single-phase tungsten carbide tantalum hafnium solid-solution powder of 2.15 microns.Main performance index is as table 1.
embodiment 2:
To purchase 5.63 kilograms of hafnia of 51.51 kilograms of oxygen tantalum ﹑ of 33.3 kilogram of two oxygen titanium ﹑ of available 25 kilograms of carbon tungsten ﹑ mixes after 5 hours with 25.62 kilograms of carbon blacks, packing graphite boat into compresses, enter the carbonization of pyrocarbon pipe furnace, pushing away the boat time is every boat 35 minutes, carbonization temperature is 2100 ℃, after carbonization 1.5 hours, then go out boat ball milling after cooling 4 hours, obtain Fsss granularity and be the single-phase tungsten carbide tantalum hafnium solid-solution powder of 2.16 microns.Main performance index is as table 1.
The performance index (quality percentage composition) of single-phase tungsten carbide tantalum hafnium solid-solution powder prepared by table 1 embodiment
Claims (3)
1. a tungsten carbide tantalum hafnium solid-solution powder, is characterized in that, its preparation method is:
A, calculating by weight, mix the hafnia of 3 parts-6 parts of the oxygen tantalum ﹑ of 50 parts-55 parts of the two oxygen titanium ﹑ of 30 parts-35 parts of the carbon tungsten ﹑ of 22 parts-26 parts with the carbon black of 24 parts-26 parts, then mixed material packed in graphite boat and compress;
B, the graphite boat that installs material is pushed in high-temperature horizontal carbon tube furnace and carries out carbonization, 2050 ℃ ~ 2200 ℃ of carbonization temperatures, pushing away the boat time is every boat 20 ~ 40 minutes, the high temperature cabonization time is 1 ~ 2 hour; Then cooling 3 ~ 6 hours, obtain block tungsten carbide tantalum hafnium sosoloid; Described high temperature cabonization is usingd CO that reaction produces as self-shield gas, prevents the infiltration of air;
C, by block tungsten carbide tantalum hafnium sosoloid ball milling, obtain Fsss granularity and be the single-phase tungsten carbide tantalum hafnium solid-solution powder of 1.5 microns～4 microns.
2. tungsten carbide tantalum hafnium solid-solution powder according to claim 1, is characterized in that, described in step a, mixes and adopts bipyramid blender, and mixing time is 4h-8h, and batch mixing amount is 100-300kg/ stove.
3. tungsten carbide tantalum hafnium solid-solution powder according to claim 1, it is characterized in that, the quality percentage composition of the impurity of described Er Yangization Tai ﹑ Yangization Tan ﹑ hafnia requires: Fe:<0.05%, Ca:<0.01%, Al<0.01%, Si<0.02%, Na<0.01%.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104131191B (en) * | 2014-07-18 | 2016-07-13 | 长沙伟徽高科技新材料股份有限公司 | A kind of preparation method of five yuan of hard alloy solid solution |
| CN104451321B (en) * | 2014-12-08 | 2016-05-04 | 长沙伟徽高科技新材料股份有限公司 | A kind of tungsten carbide niobium zirconium solid solution powder and preparation method thereof |
| CN105624511A (en) * | 2016-03-11 | 2016-06-01 | 河源泳兴硬质合金有限公司 | Tungsten-carbide titanium-based steel-bonded hard alloy and preparation method thereof |
| CN111334680A (en) * | 2020-03-03 | 2020-06-26 | 株洲昊坤硬质材料有限公司 | Preparation method of tungsten carbide tantalum |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348870A (en) * | 2008-07-22 | 2009-01-21 | 长沙伟晖高科技新材料有限公司 | Tungsten carbide-titanium carbide-tantalum carbide solid solution powder |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348870A (en) * | 2008-07-22 | 2009-01-21 | 长沙伟晖高科技新材料有限公司 | Tungsten carbide-titanium carbide-tantalum carbide solid solution powder |
Non-Patent Citations (3)
| Title |
|---|
| (Ti,Ta,W)(C,N)粉末制备研究;江丙武;《硬质合金》;20110630;第28卷(第3期);第152-157页 * |
| 江丙武.(Ti,Ta,W)(C,N)粉末制备研究.《硬质合金》.2011,第28卷(第3期),第152-157页. |
| 肖诗纲等.添加碳化铪的硬质合金.《刀具材料及其合理选择》.1981,第202-203页. * |
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Address after: 410205 No. 38 Lugu Lutian Road, Changsha High-tech Development Zone, Changsha City, Hunan Province Patentee after: Changsha Wei Hui hi tech new material Co., Ltd. Address before: 410205 Hunan province Changsha City Lugu high tech Zone Lu Tin Road No. 38 Patentee before: Changsha Wing High High-tech New Materials Co.,Ltd. |