CN104451321A - Tungsten titanium niobium zirconium carbide solid solution powder and preparation method thereof - Google Patents
Tungsten titanium niobium zirconium carbide solid solution powder and preparation method thereof Download PDFInfo
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- CN104451321A CN104451321A CN201410739695.5A CN201410739695A CN104451321A CN 104451321 A CN104451321 A CN 104451321A CN 201410739695 A CN201410739695 A CN 201410739695A CN 104451321 A CN104451321 A CN 104451321A
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- niobium zirconium
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Abstract
The invention relates to solid solution powder, and in particular relates to tungsten titanium niobium zirconium carbide solid solution powder, belonging to the field of hard alloy materials. The invention provides the tungsten titanium niobium zirconium carbide solid solution powder aiming at reducing the cost of the hard alloy materials, and a chemical formula of a tungsten titanium niobium zirconium carbide solid solution is (W0.17-0.21Ti0.24-0.29Nb0.31-0.36Zr0.19-0.22)C. The invention also provides a preparation method of the tungsten titanium niobium zirconium carbide solid solution powder. According to the obtained tungsten titanium niobium zirconium carbide solid solution powder provided by the invention, the solid solution powder with excellent performance and low cost can be obtained by replacing TaC by using the combination of NbC and ZrC, and the cutting performance of cutting tools made of the solid solution powder can be well improved.
Description
Technical field
The present invention relates to a kind of solid-solution powder, particularly a kind of tungsten carbide niobium zirconium solid solution powder, belongs to Hardmetal materials Material Field.
Background technology
Cemented carbide cutting tool improving constantly and the raising of cutting speed when cutting steel due to processed material hardness, the high-temperature behavior of alloy it is also proposed higher requirement.In prior art, normally add (Ta, Nb) C in carbide chip, one of its effect: as Wimet grain growth inhibitor, growing up of crystal grain in hard alloy sintering process can be stoped after (Ta, Nb) C adding; Two of its effect is the 3rd disperse phase formed together with TiC except WC and Co, significantly increases the heat shock resistance of Wimet, the hot hardness of heat resistanceheat resistant pressure and oxidation resistant ability and raising Wimet.
In order to improve the physical and mechanical property of Wimet, often add the compound sosoloid of WC-TiC-TaC, to improve the cutting ability of Wimet.Soaring in recent years along with TaC price, scientific research personnel is finding novel without Ta sosoloid, to reduce the cost of Hardmetal materials, can have and apply widely.
Summary of the invention
The technical problem that the present invention solves is, utilizes the object realizing reducing Hardmetal materials cost without Ta sosoloid.
One of technical scheme of the present invention is, provide a kind of tungsten carbide niobium zirconium solid solution powder, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.17-0.21ti
0.24-0.29nb
0.31-0.36zr
0.19-0.22) C.
Further, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.20ti
0.24nb
0.35zr
0.21) C.
Further, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.20ti
0.28nb
0.32zr
0.20) C.
Further, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.17ti
0.26nb
0.36zr
0.21) C.
Two of technical scheme of the present invention is, provides the method preparing described tungsten carbide niobium zirconium solid solution powder, comprises the following steps:
1) 30 ~ 35 parts of WC are taken by weight respectively, 30 ~ 35 parts of NbC, 17 ~ 22 parts of ZrC, 15 ~ 20 parts of TiO
2and 7 ~ 9 parts of carbon black powders, be mixed to get raw mixture;
2) using alcohol as ball-milling medium, raw mixture slip is obtained by rolling ball milling;
3) described raw mixture slip is dry, then wipe sieve, drum polletizing, obtain compound;
4) described compound is reacted 2 ~ 4 h under 1700 ~ 1900 DEG C of conditions, obtain tungsten carbide niobium zirconium solid solution powder.
Further, step 2) in add the polyoxyethylene glycol of raw mixture quality 2 ~ 5%.
Further, dry in step 3) condition be-0.02 ~-0.08 MPa, 70 ~ 80 DEG C.
Further, described compound granularity is about 0.5 ~ 1 mm.
The present invention is with TiO
2as Ti source, respectively using WC as W source, ZrC is as Zr source, and NbC as Nb source, then is equipped with a certain amount of carbon black reduction TiO
2, carry out solid solution reaction under vacuo, thus obtained solid-solution powder.
The NbC used in the present invention replaces TaC, can improve the hot hardness (i.e. red hardness) of alloy, hot strength and oxidation-resistance equally, generally, TaC massfraction is in the alloy 2%-10%, NbC is crisp compared with TaC, and general addition massfraction is in the alloy 2%-5%.ZrC, as a kind of metallic carbide of infusibility, has high-melting-point, high rigidity, high thermal conductance and the good characteristic such as specific conductivity and high chemical stability.The present invention also adds ZrC, and NbC and ZrC matches and can improve the toughness of material, and finally making alloy material cut use properties can improve.Product of the present invention can not only ensure that alloy property reaches and add the same effect of Ta, the more important thing is and can significantly reduce costs (TaC about 2500 yuan/kilogram, NbC, ZrC about 800 yuan/kilogram).
The present invention utilizes ethanol as ball-milling medium, and the powder that it can make various proportion differ greatly mixes (as WC powder and C powder); Adding PEG is tensio-active agent, and it can change the charge condition of powder surface, is beneficial to drying below, and dried powder does not become lumps.
Described solid-solution powder provided by the invention can improve the high-temperature behavior of Wimet.The solid-solution powder of gained has good solid solubility, is phase structure by XRD analysis, and the purity of product is high simultaneously, and oxygen level is low.
The invention has the beneficial effects as follows, use NbC and ZrC combination to replace TaC can obtain excellent property and solid-solution powder with low cost, in inserted tool, the cutting ability of cutter can be improved well.
Accompanying drawing explanation
Fig. 1 is the XRD figure spectrum of WTNZ1 in embodiment 1.
Fig. 2 is the XRD figure spectrum of WTNZ2 in embodiment 2.
Fig. 3 is the XRD figure spectrum of WTNZ3 in embodiment 3.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
embodiment 1
Employing granularity is the TiO of 1.0 μm
2powder, 2 μm of WC, ZrC and NbC and carbon black powder are as raw material, and its quality proportioning is TiO
2: WC:ZrC:NbC:C=17:32:19:32:7.66.Add in batch mixing process be about mixed raw material weight 3% PEG-4000 as tensio-active agent.Be-0.04 MPa by the slip that mixes in vacuum tightness, temperature is dry under the condition of 78 DEG C, material to be mixed takes out after being down to room temperature, sieve and drum polletizing, obtained granularity is 0.8 mm particle powder, then by particle powder at 1900 DEG C of temperature, in vacuum carbon tube furnace, vacuum solid solution 2.5 hours, is finally organized as (W
0.20ti
0.24nb
0.35zr
0.21) the WTNZ1 solid-solution powder of C.
The performance index of powder:
1) powder obtained by is face-centered cubic crystal formation product, and several compound reaches good solid solution, and Fig. 1 shows the XRD figure spectrum of obtained solid-solution powder WTNZ1;
2) mean particle size of the powder obtained by is 1.5-2.0 μm;
3) WTNZ1 sosoloid chemical constitution table 1
Table 1 WTNZ1 chemical composition
| Element | W% | Ti% | Nb% | Zr% | CT% | CF% | O% | N% |
| Test value | 31.25 | 10.74 | 29.50 | 17.70 | 10.41 | 0.18 | 0.15 | 0.17 |
Obtained powdered ingredients conforms to design load substantially as can be seen from the above table, and oxygen level is very low≤and 0.20%, powder has higher purity (>99%).
embodiment 2
Employing granularity is the TiO of 1.0 μm
2powder, 2 μm of WC, ZrC and NbC carbon black powders are as raw material, and its quality proportioning is TiO
2: the carbon black powder of WC:ZrC:NbC=20:35:18:30:9.Add in batch mixing process be about mixed raw material weight 2% PEG-4000 as tensio-active agent.Be-0.04 Mpa by the slip that mixes in vacuum tightness, temperature is dry under the condition of 70 DEG C, material to be mixed takes out after being down to room temperature, sieve and drum polletizing, obtained granularity is 1.0 mm particle powders, then by particle powder at 1800 DEG C of temperature, in vacuum vessel, vacuum solid solution 4 hours, is finally organized as (W
0.20ti
0.28nb
0.32zr
0.20) the WTNZ2 solid-solution powder of C.
The performance index of powder:
1) powder obtained by is face-centered cubic crystal formation product, and several compound reaches good solid solution, and Fig. 2 shows the XRD figure spectrum of obtained solid-solution powder WTNZ2;
2) mean particle size of the powder obtained by is 1.5-2.0 μm;
3) WTNZ2 sosoloid chemical constitution table 2
Table 2 WTNZ2 chemical composition
| Element | W% | Ti% | Nb% | Zr% | C T% | C F% | O% | N% |
| Test value | 33.51 | 12.0 | 27.09 | 16.20 | 10.52 | 0.18 | 0.18 | 0.16 |
Obtained powdered ingredients conforms to design load substantially as can be seen from the above table, and oxygen level is very low≤and 0.20%, powder has higher purity (>99%).
embodiment 3
Employing granularity is the TiO of 1.0 μm
2powder, 2 μm of WC, ZrC and NbC carbon black powders are as raw material, and its quality proportioning is TiO
2: the carbon black powder of WC:ZrC:NbC=18:30:19:33:8 part.Add in batch mixing process be about mixed raw material weight 5% PEG-4000 as tensio-active agent.Be-0.05 MPa by the slip that mixes in vacuum tightness, temperature is dry under the condition of 80 DEG C, material to be mixed takes out after being down to room temperature, sieve and drum polletizing, obtained granularity is 0.5 mm particle powder, then by particle powder at 1850 DEG C of temperature, in vacuum vessel, vacuum solid solution 3 hours, is finally organized as (W
0.17ti
0.26nb
0.36zr
0.21) the WTNZ3 solid-solution powder of C.
The performance index of powder:
1) powder obtained by is face-centered cubic crystal formation product, and several compound reaches good solid solution, and Fig. 3 shows the XRD figure spectrum of obtained solid-solution powder WTNZ3;
2) mean particle size of the powder obtained by is 1.5-2.0 μm;
3) WTNZ3 sosoloid chemical constitution table 3
Table 3 WTNZ3 chemical composition
| Element | W% | Ti% | Nb% | Zr% | C T% | C F% | O% | N% |
| Test value | 29.47 | 11.27 | 30.6 | 17.58 | 10.63 | 0.16 | 0.15 | 0.15 |
Obtained powdered ingredients conforms to design load substantially as can be seen from the above table, and oxygen level is very low≤and 0.20%, powder has higher purity (>99%).
embodiment 4
Sosoloid WTNZ1 the present invention obtained substitutes tradition and makees train wheel machining cutter containing Ta sosoloid TRC-50, and concrete test situation is as follows:
1) sosoloid composition contrast
WTNZ1:(W
0.33nb
0.33zr
0.20ti
0.13) C unit price: 980 yuan/kilogram
TRC-50:(W
0.30ti
0.2ta
0.5) C unit price: 2000 yuan/kilogram
2) identical add-on hart metal product performance comparison
Two kinds of Hardmetal materials are prepared two kinds of sintered carbide tool materials under identical processing condition, and chemical composition is respectively:
①WC-13%WTNZ1-6%Co ②WC-13%TRC-50-6%Co
Its physical and mechanical property is as following table 4
Table 4 adds different sosoloid cutter material performance
| Numbering | Sosoloid | Bending resistance Strong degree | Hardness HRa | Density | Metallographic structure |
| ① | WTNZ1 | 2160MPa | 92 | 12.92 | A00B00C00 |
| ② | TRC-50 | 1892MPa | 92 | 14.03 | A00B02C00 |
3) two kinds of cutter materials are made respectively cutter RCMX320900 and RCMX250700 becoming processing train wheel, and then go on-the-spot cutting to verify to factory after identical coating process process, its result is as following table 5.
Table 5 Tool in Cutting test-results
| Numbering | Sosoloid | The RCMX250700 life-span | The RCMX320900 life-span |
| ① | WTNZ1 | 8/sword | 12/sword |
| ② | TRC-50 | 7/sword | 12/sword |
As can be seen from the above table, the cutting ability of cutter is suitable, and be applied in the body material of the cutter of train wheel containing Ta sosoloid TRC-50 with substituting completely without Ta sosoloid WTNZ1, price obviously reduces, and the cost performance of cutter is higher.
Claims (8)
1. a tungsten carbide niobium zirconium solid solution powder, is characterized in that, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.17-0.21ti
0.24-0.29nb
0.31-0.36zr
0.19-0.22) C.
2. tungsten carbide niobium zirconium solid solution powder as claimed in claim 1, it is characterized in that, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.20ti
0.24nb
0.35zr
0.21) C.
3. tungsten carbide niobium zirconium solid solution powder as claimed in claim 1, it is characterized in that, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.20ti
0.28nb
0.32zr
0.20) C.
4. tungsten carbide niobium zirconium solid solution powder as claimed in claim 1, it is characterized in that, the chemical formula of described tungsten carbide niobium zirconium solid solution is (W
0.17ti
0.26nb
0.36zr
0.21) C.
5. prepare a method for tungsten carbide niobium zirconium solid solution powder as described in one of claim 1-4, comprise the following steps:
1) 30 ~ 35 parts of WC are taken by weight respectively, 30 ~ 35 parts of NbC, 17 ~ 22 parts of ZrC, 15 ~ 20 parts of TiO
2and 7 ~ 9 parts of carbon black powders, be mixed to get raw mixture;
2) using alcohol as ball-milling medium, raw mixture slip is obtained by rolling ball milling;
3) described raw mixture slip is dry, then wipe sieve, drum polletizing, obtain compound;
4) described compound is reacted 2 ~ 4 h under 1700 ~ 1900 DEG C of conditions, obtain tungsten carbide niobium zirconium solid solution powder.
6. method as claimed in claim 5, is characterized in that, step 2) in add the polyoxyethylene glycol of raw mixture quality 2 ~ 5%.
7. method as claimed in claim 5, is characterized in that, condition dry in step 3) be-0.02 ~-0.08 MPa, 70 ~ 80 DEG C.
8. method as claimed in claim 5, it is characterized in that, described compound granularity is about 0.5 ~ 1 mm.
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Cited By (5)
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| CN107245625A (en) * | 2017-06-12 | 2017-10-13 | 长沙伟徽高科技新材料股份有限公司 | A kind of Tungsten carbide titanium tantalum molybdenum solid-solution powder and preparation method thereof |
| CN107245624A (en) * | 2017-06-12 | 2017-10-13 | 长沙伟徽高科技新材料股份有限公司 | A kind of five yuan of solid solution and preparation method thereof |
| CN108883467A (en) * | 2016-04-15 | 2018-11-23 | 山特维克知识产权股份有限公司 | The 3 D-printing of cermet or hard alloy |
| CN110273094A (en) * | 2019-08-05 | 2019-09-24 | 赣州锐科合金材料有限公司 | A kind of preparation method of cemented carbide powder |
| CN111732436A (en) * | 2020-06-18 | 2020-10-02 | 山东合创明业精细陶瓷有限公司 | Easy-to-sinter titanium and tungsten co-doped zirconium carbide powder and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108883467A (en) * | 2016-04-15 | 2018-11-23 | 山特维克知识产权股份有限公司 | The 3 D-printing of cermet or hard alloy |
| CN109311091A (en) * | 2016-04-15 | 2019-02-05 | 山特维克知识产权股份有限公司 | The 3 D-printing of cermet or hard alloy |
| CN109311091B (en) * | 2016-04-15 | 2021-01-29 | 山特维克知识产权股份有限公司 | Three-dimensional printing of cermets or cemented carbides |
| CN108883467B (en) * | 2016-04-15 | 2021-02-02 | 山特维克知识产权股份有限公司 | Three-dimensional printing of cermets or cemented carbides |
| CN107245625A (en) * | 2017-06-12 | 2017-10-13 | 长沙伟徽高科技新材料股份有限公司 | A kind of Tungsten carbide titanium tantalum molybdenum solid-solution powder and preparation method thereof |
| CN107245624A (en) * | 2017-06-12 | 2017-10-13 | 长沙伟徽高科技新材料股份有限公司 | A kind of five yuan of solid solution and preparation method thereof |
| CN110273094A (en) * | 2019-08-05 | 2019-09-24 | 赣州锐科合金材料有限公司 | A kind of preparation method of cemented carbide powder |
| CN111732436A (en) * | 2020-06-18 | 2020-10-02 | 山东合创明业精细陶瓷有限公司 | Easy-to-sinter titanium and tungsten co-doped zirconium carbide powder and preparation method thereof |
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