CN109439992A - A kind of novel NbC-Ni-Mo2C high-temperature rigid alloy and preparation method thereof - Google Patents
A kind of novel NbC-Ni-Mo2C high-temperature rigid alloy and preparation method thereof Download PDFInfo
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- CN109439992A CN109439992A CN201811236774.9A CN201811236774A CN109439992A CN 109439992 A CN109439992 A CN 109439992A CN 201811236774 A CN201811236774 A CN 201811236774A CN 109439992 A CN109439992 A CN 109439992A
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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
- C22C29/067—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
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- 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
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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
- C22C29/005—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
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Abstract
The present invention relates to cemented carbide material technical fields, disclose a kind of novel NbC-Ni-Mo2C high-temperature rigid alloy and preparation method thereof.NbC-Ni-Mo2C high-temperature rigid alloy has better high-temperature behavior, the crescent hollow abrasion generated when can be effectively reduced when processing iron-base workpiece to the processing of iron-base workpiece material.Mo is added on the basis of NbC-8Ni2After C, not only the high-temperature behavior of material is effectively promoted, and hardness is shown in physical property detection data and is also significantly improved in fracture toughness.
Description
Technical field
The present invention relates to cemented carbide material technical fields, more particularly to a kind of novel NbC-Ni-Mo2C high temperature
Hard alloy and preparation method thereof.
Background technique
Hard alloy is hard compounds and binding metal one kind made of powder metallurgical technique of refractory metal
Alloy material.Hard alloy has a series of excellent performances such as hardness is high, wear-resisting, intensity and toughness are preferable, heat-resisting, corrosion-resistant,
Especially its high rigidity and wearability, even if 500 DEG C at a temperature of be held essentially constant, still have at 1000 DEG C very high
Hardness.Hard alloy is widely used as cutter material, can also be used to the difficulties such as cutting heat resisting steel, stainless steel, potassium steel, tool steel
The material of processing.
Hard alloy has very high hardness, intensity, wearability and corrosion resistance, is widely used in many fields,
And the hard alloy market demand continues to increase.
Performance is begun to decline in 800 DEG C or more of working environment in existing hard alloy, and to iron-base workpiece
It will cause crescent hollow abrasion when processing, workpiece can be caused to damage, influence the service life of processing quality and cutter.Study a kind of high temperature
The new type high temperature hard alloy that lower performance stabilization and its physical property do not decline is necessary.
Summary of the invention
Aiming at the shortcomings in the prior art, a kind of novel NbC-Ni-Mo is provided2C high-temperature rigid alloy.In NbC-8Ni
Mo is added2C can promote the high-temperature behavior, hardness and fracture toughness of material.
The present invention, which also resides in, provides a kind of novel NbC-Ni-Mo2The preparation method of C high-temperature rigid alloy material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of novel NbC-Ni-Mo2Mo is added based on NbC-8Ni in C high-temperature rigid alloy2C, according to following weight
The component of percentage carries out mix material proportioning:
NbC 84~88%
Ni 8%
Mo2C 4~8%.
A kind of novel NbC-Ni-Mo2The preparation method of C high-temperature rigid alloy, specific preparation step are as follows:
S1. according to a kind of novel NbC-Ni-Mo2The proportion of C high-temperature rigid alloy carries out ingredient, carries out after ingredient
Wet-milling obtains slurry；
S2. slurry is dry, the feed powder after drying is carried out to mix glue, is then pressed into type, then carries out degumming and is sintered to obtain the final product
To NbC-Ni-Mo2C high-temperature rigid alloy.
Further, the Fisher particle size of NbC powder described in step S1 is 2 μm.
Further, the Fisher particle size of Ni powder described in step S1 is 2 μm.
Further, the ratio of grinding media to material of wet-milling described in step S1 is 3:1.
Further, the wet grinding media of wet-milling described in step S1 is the industrial alcohol that water content is 5wt%.
Further, the time of wet-milling described in step S1 is 20~40h.
Further, the temperature of the sintering of degumming described in step S2 is 1400~1600 DEG C.
Further, the sintering time of the sintering of degumming described in step S2 is 1~3h.
Compared with prior art, beneficial effect is:
NbC-Ni-Mo provided by the invention2The preparation method of C high-temperature rigid alloy is easy, easy to operate.It is provided by the invention
NbC-Ni-Mo2C high-temperature rigid alloy has excellent high-temperature behavior, joined Mo2After C, the fracture toughness and hardness of material
There is significant enhancing.Disclosed NbC-Ni-Mo2C high-temperature rigid alloy can effectively prevent in field of material processing to iron
The damage that base workpiece generates, and have good red hardness at 800 DEG C or more.
Specific embodiment
Embodiment 1
A kind of novel NbC-Ni-Mo2The preparation method of C high-temperature rigid alloy, specific preparation step are as follows:
S1. it is matched according to power and carries out ingredient, wherein NbC powder content is 88wt%, and Ni powder content is 8wt%, Mo2C powder contains
Amount is 4wt%, with the total 1Kg of mixture postponed.It will be added after mixture ingredient in the ball grinding cylinder that volume is 2L, hard be added
Alloy grinding rod 3Kg, it is the industrial alcohol of 5wt% as wet grinding media that water content, which is added, and the wet-milling time is 30h, carries out wet-milling
Obtain slurry.
S2. slurry obtained in step S1 is dry, the feed powder after drying is carried out to mix glue, is then pressed into type, then
Degumming sintering is carried out at 1480 DEG C, keeps the temperature 1h to get NbC-Ni-Mo is arrived2C high-temperature rigid alloy.
NbC-Ni-Mo obtained2C high-temperature rigid alloy sample specification is 5.25mm × 6.5mm × 20mm, by what is obtained
Testing bar carries out hardness and fracture toughness test.
Embodiment 2
The preparation method of the present embodiment reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: NbC
Powder content is 86wt%, and Ni powder content is 8wt%, Mo2C powder content is 6wt%, with the total 1Kg of mixture postponed；The wet-milling time
For 20h, degumming sintering temperature is 1400 DEG C, soaking time 2h.
Embodiment 3
The preparation method of the present embodiment reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: NbC
Powder content is 84wt%, and Ni powder content is 8wt%, Mo2C powder content is 8wt%, with the total 1Kg of mixture postponed；The wet-milling time
For 40h, degumming sintering temperature is 1600 DEG C, soaking time 3h.
Comparative example 1
The preparation method of this comparative example reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: NbC
Powder content is 92wt%, and Ni powder content is 8wt%, with the total 1Kg of mixture postponed.
Comparative example 2
The preparation method of this comparative example reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: WC powder
Content is 88wt%, and Ni powder content is 8wt%, Mo2C powder content is 4wt%, with the total 1Kg of mixture postponed.
Comparative example 3
The preparation method of this comparative example reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: WC powder
Content is 86wt%, and Ni powder content is 8wt%, Mo2C powder content is 6wt%, with the total 1Kg of mixture postponed.
Comparative example 4
The preparation method of this comparative example reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: WC powder
Content is 84wt%, and Ni powder content is 8wt%, Mo2C powder content is 8wt%, with the total 1Kg of mixture postponed.
Comparative example 5
The preparation method of this comparative example reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: NbC
Powder content is 90wt%, and Ni powder content is 8wt%, Mo2C powder content is 2wt%, with the total 1Kg of mixture postponed；The wet-milling time
For 15h, degumming sintering temperature is 1300 DEG C, soaking time 0.5h.
Comparative example 6
The preparation method of this comparative example reference embodiment 1, the difference from embodiment 1 is that, the proportion of mixture are as follows: NbC
Powder content is 82wt%, and Ni powder content is 8wt%, Mo2C powder content is 10wt%, with the total 1Kg of mixture postponed；When wet-milling
Between be 45h, degumming sintering temperature be 1700 DEG C, soaking time 3.5h.
By what is prepared in embodiment 1, embodiment 2, embodiment 3, comparative example 1, comparative example 2, comparative example 3 and comparative example 4
High-temperature rigid alloy carries out hardness and fracture toughness detects, and obtained result is as shown in table 1 below:
Table 1
| Number | Classification | Hardness/HV30 | Fracture toughness/MPa/m2 |
| 1 | Embodiment 1 | 1320 | 10.2 |
| 2 | Embodiment 2 | 1580 | 13.5 |
| 3 | Embodiment 3 | 1650 | 13.8 |
| 4 | Comparative example 1 | 1250 | 9.6 |
| 5 | Comparative example 2 | 1430 | 12.1 |
| 6 | Comparative example 3 | 1510 | 12.5 |
| 7 | Comparative example 4 | 1600 | 12.3 |
In table 1, by by embodiment 1, embodiment 2, embodiment 3 compared with comparative example 1, the present invention in NbC-8Ni
Middle addition Mo2Improved high-temperature rigid alloy rigidity, fracture toughness have apparent enhancing after C.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (9)
1. a kind of novel NbC-Ni-Mo2C high-temperature rigid alloy, which is characterized in that based on NbC-8Ni, Mo is added2C, according to
Mix material proportioning is carried out following weight percentage components:
NbC 84~88%
Ni 8%
Mo2C 4~8%.
2. a kind of novel NbC-Ni-Mo2The preparation method of C high-temperature rigid alloy, which is characterized in that specific preparation step are as follows:
S1. a kind of novel NbC-Ni-Mo described in accordance with the claim 12The proportion of C high-temperature rigid alloy carries out ingredient, after ingredient
It carries out wet-milling and obtains slurry；
S2. slurry is dry, the feed powder after drying is carried out to mix glue, is then pressed into type, then carries out degumming sintering and obtains
NbC-Ni-Mo2C high-temperature rigid alloy.
3. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The Fisher particle size of NbC powder described in rapid S1 is 2 μm.
4. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The Fisher particle size of Ni powder described in rapid S1 is 2 μm.
5. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The ratio of grinding media to material of wet-milling described in rapid S1 is 3:1.
6. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The wet grinding media of wet-milling described in rapid S1 is the industrial alcohol that water content is 5wt%.
7. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The time of wet-milling described in rapid S1 is 20~40h.
8. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The temperature of degumming sintering described in rapid S2 is 1400~1600 DEG C.
9. a kind of novel NbC-Ni-Mo according to claim 22The preparation method of C high-temperature rigid alloy, which is characterized in that step
The sintering time of degumming sintering described in rapid S2 is 1~3h.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746211A (en) * | 2020-12-22 | 2021-05-04 | 浙江恒成硬质合金有限公司 | High-temperature-resistant mold and manufacturing method thereof |
| CN112746212A (en) * | 2020-12-22 | 2021-05-04 | 浙江恒成硬质合金有限公司 | Roller and manufacturing method thereof |
| WO2021105881A1 (en) | 2019-11-28 | 2021-06-03 | Hyperion Materials & Technologies (Sweden) Ab | Microstructure of nbc-based cemented carbide |
| WO2021105875A1 (en) | 2019-11-28 | 2021-06-03 | Hyperion Materials & Technologies (Sweden) Ab | NbC-BASED CEMENTED CARBIDE |
| CN113025863A (en) * | 2021-02-02 | 2021-06-25 | 浙江恒成硬质合金有限公司 | Roller and manufacturing method thereof |
| CN113025862A (en) * | 2021-02-01 | 2021-06-25 | 浙江恒成硬质合金有限公司 | High temperature softening resistant roll and method of making same |
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2018
- 2018-10-23 CN CN201811236774.9A patent/CN109439992B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021105881A1 (en) | 2019-11-28 | 2021-06-03 | Hyperion Materials & Technologies (Sweden) Ab | Microstructure of nbc-based cemented carbide |
| WO2021105875A1 (en) | 2019-11-28 | 2021-06-03 | Hyperion Materials & Technologies (Sweden) Ab | NbC-BASED CEMENTED CARBIDE |
| CN114729421A (en) * | 2019-11-28 | 2022-07-08 | 瑞典海博恩材料与技术有限公司 | NbC based hard alloy |
| CN114761157A (en) * | 2019-11-28 | 2022-07-15 | 瑞典海博恩材料与技术有限公司 | Microstructure of NbC-based hard alloy |
| CN112746211A (en) * | 2020-12-22 | 2021-05-04 | 浙江恒成硬质合金有限公司 | High-temperature-resistant mold and manufacturing method thereof |
| CN112746212A (en) * | 2020-12-22 | 2021-05-04 | 浙江恒成硬质合金有限公司 | Roller and manufacturing method thereof |
| CN113025862A (en) * | 2021-02-01 | 2021-06-25 | 浙江恒成硬质合金有限公司 | High temperature softening resistant roll and method of making same |
| CN113025863A (en) * | 2021-02-02 | 2021-06-25 | 浙江恒成硬质合金有限公司 | Roller and manufacturing method thereof |
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