CN1425787A - Tungsten carbide base hard alloy - Google Patents
Tungsten carbide base hard alloy Download PDFInfo
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- CN1425787A CN1425787A CN 02139684 CN02139684A CN1425787A CN 1425787 A CN1425787 A CN 1425787A CN 02139684 CN02139684 CN 02139684 CN 02139684 A CN02139684 A CN 02139684A CN 1425787 A CN1425787 A CN 1425787A
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- alloy
- tungsten carbide
- carbide base
- wimet
- hard alloy
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Abstract
The present invention discloses a kind of tungsten carbide base hard alloy. The alloy contains (Ti, W, Ta, Nb, Zr)C solid solution. Substituting partial Ta with Nb and Zr with relatively abundant source and low cost makes the alloy lower in production cost. In addition, NbC can fine crystal grains, ZrC can raise the high temperature performance of the alloy, and Substituting partial Ta with Nb and Zr will not lower the performance of the alloy. The alloy is suitable for producing cutting tools.
Description
Technical field
The present invention relates to a kind of tungsten carbide base carbide alloy, the tungsten carbide base carbide alloy of using especially for the machining instrument.
Background technology
Wimet is by the carbide of refractory metal and magnesium-yttrium-transition metal such as Fe, Ni, Co, adopts powder metallurgy process to be prepared from.It has high hardness, and good wear resistance is widely used in cutting tool, mould and the geology and mine instrument made.Adopting WC-TiC-Co carbide cutting steel aspect the cutting tool more.It is found that afterwards in this series hard alloy, to add the high-temperature behavior that TaC can obviously improve cutter, as hot strength, hot hardness and oxidation-resistance etc.But the Ta natural resources shortage costs an arm and a leg, and the feasible production cost that contains the Wimet of Ta remains high.
Summary of the invention
The purpose of this invention is to provide the less tungsten carbide base carbide alloy of a kind of Ta of containing, reduce the production cost of cutting series hard alloy.
In order to achieve the above object, contain (Ti, W, Ta, Nb, Zr) C sosoloid in the tungsten carbide base carbide alloy of the present invention.
As a further improvement on the present invention, weight ratio TaC in the described sosoloid: (NbC+ZrC)=(0.3～18): 1.
Further improve weight ratio NbC: ZrC=(1～5) in the described sosoloid: 1 again as of the present invention.
Owing to adopted abundant and cheap material Nb, the Zr of resource to substitute part Ta, the production cost that contains the Ta Wimet reduced.And, but NbC crystal grain thinning, ZrC can improve the alloy high-temp performance, substitute part Ta with Nb, Zr, and alloy property can not reduce.
Embodiment
Wimet of the present invention adopts following processing method preparation:
With Ta
2O
5, ZrO
2, Nb
2O
5, TiO
2And WC, carbon black prepare burden by table 1.
With the material for preparing through dry grinding, press boat, in (1800～2300) ℃ following carbonization, through broken and sieve (process system sees Table 2), make five yuan of composite carbides (Ti, W, Ta, Nb, Zr) C again.
With composite carbide (Ti, W, Ta, Nb, Zr) C powder and WC powder, the weighing by a certain percentage of Co powder, through wet-milling, drying, granulation and compacting, make the WC base cemented carbide that contains (Ti, W, Ta, Nb, Zr) C Solid solution at (1350～2300) ℃ sintering again.
The chemical ingredients scope of Wimet according to the present invention has been prepared 4 crowdes of alloy: YW1-T1, YW1-T2, and YW1-T3 and YW2-T, wherein YW2-T is the Wimet of Co content 8wt%, all the other 3 batches is the Wimet of Co content 6wt%.Table 3 provides the concrete chemical ingredients of the compound for preparing above-mentioned 4 batches of Wimet, provides preparation Co content to be respectively 6wt% and 8wt% in addition, and does not contain the Wimet YW of NbC, ZrC
1, YW
2The concrete chemical ingredients of compound.
Table 4 provides aforementioned 4 batches of WC base cemented carbides of the present invention and YW
1, YW
2The hardness value of Wimet when normal temperature and high temperature.
Table 5 provides aforementioned 4 batches of WC base cemented carbides of the present invention and YW
1, YW
2The bending strength value of Wimet when normal temperature and high temperature.
Table 6 provides aforementioned 4 batches of WC base cemented carbides of the present invention and YW
1, YW
2The oxidation weight gain rate of Wimet.
From the numerical value of table 4, table 5 and table 6 as seen, identical with Co content and the Wimet that do not contain NbC, ZrC of WC base cemented carbide of the present invention is compared, and the aspects such as hardness, bending strength and oxidation-resistance when normal temperature and high temperature are approaching, even slightly improve.
Table 1 composite carbide charge composition unit: wt%
| ??WC | ??TiO 2 | ??C | ??Ta 2O 5 | ??Nb 2O 5+ZrO 2 |
| ??35～50 | ??25～45 | ??10～25 | ??5～20 | ??5～10 |
Broken and the process system that sieves of table 2 composite carbide
| Grinding element | Charge amount (Kg) | The ball milling time (h) | Cross sieve mesh (order) | |
| Sphere diameter (mm) | Weight (Kg) | |||
| 15～40 | ?300～500 | ??150 | ??3～4 | ?60～80 |
Table 3 compound chemical ingredients
Annotate: go up in the table, the surplus composition is WC.
| The trade mark | ????Co | ????TiC | ????TaC | ????NbC | ????ZrC |
| ??YW 1 | ????6.0 | ????6.0 | ????4.0 | ????- | ????- |
| ??YW 1-T 1 | ????6.0 | ????6.0 | ????3.6 | ????0.7 | ????0.2 |
| ??YW 1-T 2 | ????6.0 | ????6.0 | ????2.0 | ????1.5 | ????0.8 |
| ??YW 1-T 3 | ????6.0 | ????6.0 | ????1.2 | ????1.2 | ????1.2 |
| ??YW 2 | ????8.0 | ????6.0 | ????4.0 | ????- | ????- |
| ??YW 2-T | ????8.0 | ????6.0 | ????2.4 | ????1.0 | ????0.7 |
Table 4 normal temperature and hot hardness synopsis unit: N/mm
2
| The trade mark | Normal temperature | ????300℃ | ????500℃ | ??800℃ |
| ??YW 1 | ????1800 | ????1310 | ????1050 | ??730 |
| ??YW 1-T 1 | ????1780 | ????1360 | ????1140 | ??760 |
| ??YW 1-T 2 | ????1810 | ????1400 | ????1150 | ??770 |
| ??YW 1-T 3 | ????1850 | ????1430 | ????1180 | ??800 |
| ??YW 2 | ????1650 | ????1200 | ????920 | ??620 |
| ??YW 2-T | ????1610 | ????1350 | ????1110 | ??680 |
Table 5 normal temperature and high-temperature bending strength unit: MPa
| The trade mark | Normal temperature | ????300℃ | ????500℃ |
| ????YW 1 | ????1605 | ????1454 | ????1360 |
| ????YW 1-T 1 | ????1613 | ????1593 | ????1510 |
| ????YW 1-T 2 | ????1600 | ????1540 | ????1490 |
| ????YW 1-T 3 | ????1608 | ????1520 | ????1475 |
| ????YW 2 | ????1755 | ????1687 | ????1477 |
| ????YW 2-T | ????1827 | ????1705 | ????1625 |
Table 6 oxidation weight gain rate unit: g/m
2
| The trade mark | ??YW 1-T 1 | ??YW 1-T 1 | ??YW 1-T 1 | ??YW 1-T 1 | ??YW 1-T 1 | ??YW 1-T 1 |
| ??31 | ??28 | ??23 | ??20 | ??23 | ??19 |
Claims (3)
1, a kind of tungsten carbide base carbide alloy is characterized in that: wherein contain (Ti, W, Ta, Nb, Zr) C sosoloid.
2, according to the tungsten carbide base carbide alloy of claim 1, it is characterized in that: weight ratio TaC:(NbC+ZrC in the described sosoloid)=(0.3～18): 1.
3, according to the tungsten carbide base carbide alloy of claim 2, it is characterized in that: weight ratio NbC: ZrC=(1～5) in the described sosoloid: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139684 CN1425787A (en) | 2002-10-10 | 2002-10-10 | Tungsten carbide base hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139684 CN1425787A (en) | 2002-10-10 | 2002-10-10 | Tungsten carbide base hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1425787A true CN1425787A (en) | 2003-06-25 |
Family
ID=4750187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139684 Pending CN1425787A (en) | 2002-10-10 | 2002-10-10 | Tungsten carbide base hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1425787A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7163657B2 (en) * | 2003-12-03 | 2007-01-16 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| EP1689898B1 (en) | 2003-12-03 | 2009-05-27 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| US8834594B2 (en) | 2011-12-21 | 2014-09-16 | Kennametal Inc. | Cemented carbide body and applications thereof |
| CN104451321A (en) * | 2014-12-08 | 2015-03-25 | 长沙伟徽高科技新材料股份有限公司 | Tungsten titanium niobium zirconium carbide solid solution powder and preparation method thereof |
| CN109136710A (en) * | 2018-09-14 | 2019-01-04 | 长沙众鑫达工具有限公司 | A kind of hard alloy and preparation method thereof |
| CN109280837A (en) * | 2018-10-31 | 2019-01-29 | 长沙众鑫达工具有限公司 | A kind of hard alloy cutter and preparation method thereof |
| CN109338198A (en) * | 2018-12-26 | 2019-02-15 | 河源普益硬质合金厂有限公司 | A kind of high-performance Y C50 hard alloy and its processing method |
-
2002
- 2002-10-10 CN CN 02139684 patent/CN1425787A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7163657B2 (en) * | 2003-12-03 | 2007-01-16 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| US7309466B2 (en) | 2003-12-03 | 2007-12-18 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| EP1689898B1 (en) | 2003-12-03 | 2009-05-27 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| CN102517485A (en) * | 2003-12-03 | 2012-06-27 | 钴碳化钨硬质合金公司 | Cemented carbide body containing zirconium and niobium and method of making the same |
| US8394169B2 (en) | 2003-12-03 | 2013-03-12 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| EP1689898B2 (en) † | 2003-12-03 | 2018-10-10 | Kennametal Inc. | Cemented carbide body containing zirconium and niobium and method of making the same |
| US8834594B2 (en) | 2011-12-21 | 2014-09-16 | Kennametal Inc. | Cemented carbide body and applications thereof |
| CN104451321A (en) * | 2014-12-08 | 2015-03-25 | 长沙伟徽高科技新材料股份有限公司 | Tungsten titanium niobium zirconium carbide solid solution powder and preparation method thereof |
| 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 |
| CN109136710A (en) * | 2018-09-14 | 2019-01-04 | 长沙众鑫达工具有限公司 | A kind of hard alloy and preparation method thereof |
| CN109280837A (en) * | 2018-10-31 | 2019-01-29 | 长沙众鑫达工具有限公司 | A kind of hard alloy cutter and preparation method thereof |
| CN109338198A (en) * | 2018-12-26 | 2019-02-15 | 河源普益硬质合金厂有限公司 | A kind of high-performance Y C50 hard alloy and its processing method |
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