CN102424929A - N200 hard alloy and preparation method thereof - Google Patents
N200 hard alloy and preparation method thereof Download PDFInfo
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- CN102424929A CN102424929A CN2011104413086A CN201110441308A CN102424929A CN 102424929 A CN102424929 A CN 102424929A CN 2011104413086 A CN2011104413086 A CN 2011104413086A CN 201110441308 A CN201110441308 A CN 201110441308A CN 102424929 A CN102424929 A CN 102424929A
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Abstract
The invention which provides an N200 hard alloy and a preparation method thereof relates to the technical field of alloy preparation. The invention aims to solve technical problems that toughness, high pressure resistance, corrosion resistance and the like of present WC-Co hard alloys are insufficient in an alkaline environment. The N200 hard alloy of the invention comprises the following components, by weight, 7.99-8.01% of Ni powder, 0.29-0.31% of Cr3C2 powder, 0.19-0.21% of TaC powder, and the balance WC powder.
Description
Technical field
The present invention relates to alloy manufacturing technology field, particularly a kind of is the tungsten carbide base carbide alloy of phase and preparation method thereof that bonds with nickel.
Background technology
Hard in the wimet is often referred to WC, TiC, VC etc. mutually, and bonding is often referred to Co, Ni, Fe etc. mutually.Wimet starts from the WC-Co wimet, and it is that composition is the simplest, the most a kind of alloy of use range.But when in alkaline environment, using; Existing wimet exists not enough at toughness, aspect such as high pressure resistant, corrosion-resistant; Can not satisfy comparatively strict technical requirement, and replace cobalt can solve WC-Co series hard alloy not high pressure resistant and not corrosion resistant problem in acid or alkaline environment mutually to a great extent as bonding with nickel.
Summary of the invention
The present invention is intended to solve existing WC-Co wimet and in alkaline environment, has insufficient technical problem at toughness, aspect such as high pressure resistant, corrosion-resistant, with provide a kind of and can in alkaline environment, use, have certain toughness and high pressure resistant, corrosion resistance, production cost is low and a kind of N200 wimet of cost performance advantages of higher and preparation method thereof.
The objective of the invention is to realize through following technical scheme.
A kind of N200 wimet of the present invention, contain following components by weight proportion:
Ni 7.99%～8.01%
Cr3C2 0.29%～0.31%
TaC 0.19%～0.21%
The WC surplus.
The preparation method of a kind of N200 wimet of the present invention comprises the steps:
A) get by weight percentage following component: Ni powder 7.99 %～8.01%, Cr3C2 powder 0.29%～0.31%; TaC powder 0.19%～0.21%; Surplus is the WC powder, is 1-2 μ m with wet-milling to powder size in the aforementioned component mixture adding ball mill, gets mixed slurry;
B) with above-mentioned mixed slurry filter, dry back adds rubber solutions, stir the back 90～110 ℃ dry 15～25 minutes down, cross 80 mesh sieves afterwards and get mixture;
C) the above-mentioned mixture that is obtained by step b) is dropped in the mould, in the moulding of 25～63T pressure pressed;
D) with the above-mentioned moulding product that obtains by step c) place vacuum tightness 5～20Pa, temperature be incubated 1～2 hour under 1420～1440 ℃ the condition finished product.
The preparation method of a kind of N200 wimet of the present invention, the particle diameter of Ni powder is 1～2 μ m, Ni content in the wherein said step a)>99.0 wt %; The particle diameter of TaC powder is that 1～1.5 μ m, total carbon content are 6.1%～6.3%; The particle diameter of Cr3C2 powder is≤2 μ m, Cr content>85.3%, total carbon content is 12.8%～13.5%; The particle diameter of WC powder is that 1～2 μ m, total carbon content are 5.90～5.94wt%.
The preparation method of a kind of N200 wimet of the present invention, the used solvent of wet-milling is an absolute ethyl alcohol in the wherein said step a), its addition is that every kg of component mixture adds absolute ethyl alcohol 200-300ml.
The preparation method of a kind of N200 wimet of the present invention, the addition of rubber solutions is the 0.8-1.0% of mixed slurry gross weight in the wherein said step b).
The beneficial effect of a kind of N200 wimet of the present invention and preparation method thereof:
1. to adopt Ni be that bonding phase, WC are the hard phase in the present invention, both possessed original wimet each item use properties, has and can in alkaline environment, use, and reduces production costs simultaneously.
2. the alloy material hardness of the present invention's preparation is high, wear resistance, good corrosion resistance, and strategic resource consumes low.
Embodiment
A kind of N200 wimet of the present invention and preparation method thereof further specifies through following embodiment.
The material proportion table of embodiment 1-3
| ? | Ni powder content (%) | Cr3C2 powder content (%) | TaC powder content (%) | WC powder content (%) |
| Embodiment 1 | 7.99 | 0.29 | 0.19 | 91.53 |
| Embodiment 2 | 8.00 | 0.30 | 0.20 | 91.50 |
| Embodiment 3 | 8.01 | 0.31 | 0.21 | 91.47 |
Material proportion table by embodiment 1-3 is got component by weight percentage: Ni powder 7.99 %～8.01%, Cr3C2 powder 0.29%～0.31%, and TaC powder 0.19%～0.21%, surplus is the WC powder.Ni powder, Cr3C2 powder, TaC powder and WC powder are added in the tilting-type ball mill; Drum's speed of rotation is 240r/min; WC-6wt%Ni base cemented carbide ball about ball milling uses alloy ball as diameter 10mm, ball-to-powder weight ratio is 3.5:1, the ball milling time is 42～44h; The wet-milling solvent for use is an absolute ethyl alcohol, and wet-milling to powder size is that 1～2 μ m gets mixed slurry.
Afterwards; With the SD rubber solutions that above-mentioned mixed slurry filters, dry back adds raw material total mass 0.8～1.0%; Mix even back 80 mesh sieves of after 90～110 ℃ of following vacuum-drying 15-25 minutes, crossing and get mixture; Said mixture is dropped in the mould in the moulding of 25～63T pressure pressed, places vacuum tightness 5～20Pa then, temperature be incubated 1～2 hour under 1420～1440 ℃ the condition finished product.
The addition of absolute ethyl alcohol is that every kg of component mixture adds 200～300ml during practical implementation; The particle diameter of used Ni powder is 1～2 μ m, Ni content>99.0 wt %; The particle diameter of TaC powder is that 1～1.5 μ m, total carbon content are 6.1%～6.3%; The particle diameter of Cr3C2 powder is≤2 μ m, Cr content>85.3%, total carbon content is 12.8%～13.5%; The particle diameter of WC powder is that 1～2 μ m, total carbon content are 5.90～5.94wt%.
According to mentioned component and prepared with WC be hard mutually, Ni is the bonding phase cemented carbide homogeneous microstructure, its grain size is about 1.0～2.0 μ m, bending strength>=1600N/mm
2
In sum, a kind of N200 wimet of the present invention and preparation method thereof has that hardness and wear resistance are high, corrosion resistance nature is more excellent, production cost is low and the cost performance advantages of higher.
Claims (5)
1. N200 wimet is characterized in that containing following components by weight proportion:
Ni 7.99%～8.01%
Cr3C2 0.29%～0.31%
TaC 0.19%～0.21%
The WC surplus.
2. the preparation method of a kind of N200 wimet according to claim 1 is characterized in that comprising the steps:
A) get by weight percentage following component: Ni powder 7.99 %～8.01%, Cr3C2 powder 0.29%～0.31%; TaC powder 0.19%～0.21%; Surplus is the WC powder, is 1-2 μ m with wet-milling to powder size in the aforementioned component mixture adding ball mill, gets mixed slurry;
B) with above-mentioned mixed slurry filter, dry back adds rubber solutions, stir the back 90～110 ℃ dry 15～25 minutes down, cross 80 mesh sieves afterwards and get mixture;
C) the above-mentioned mixture that is obtained by step b) is dropped in the mould, in the moulding of 25～63T pressure pressed;
D) with the above-mentioned moulding product that obtains by step c) place vacuum tightness 5～20Pa, temperature be incubated 1～2 hour under 1420～1440 ℃ the condition finished product.
3. the preparation method of a kind of N200 wimet according to claim 2 is characterized in that: the particle diameter of Ni powder is 1～2 μ m, Ni content in the said step a)>99.0 wt %; The particle diameter of TaC powder is that 1～1.5 μ m, total carbon content are 6.1%～6.3%; The particle diameter of Cr3C2 powder is≤2 μ m, Cr content>85.3%, total carbon content is 12.8%～13.5%; The particle diameter of WC powder is that 1～2 μ m, total carbon content are 5.90～5.94wt%.
4. the preparation method of a kind of N200 wimet according to claim 2 is characterized in that: the used solvent of wet-milling is an absolute ethyl alcohol in the said step a), and its addition is that every kg of component mixture adds absolute ethyl alcohol 200-300ml.
5. the preparation method of a kind of N200 wimet according to claim 2 is characterized in that: the addition of rubber solutions is the 0.8-1.0% of mixed slurry gross weight in the said step b).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060652A (en) * | 2013-01-25 | 2013-04-24 | 地质矿产部无锡钻探工具厂 | High-temperature-resistant alloy and production process thereof |
| CN106191606A (en) * | 2016-07-15 | 2016-12-07 | 无锡森锐硬质合金制品有限公司 | A kind of high temperature cemented carbide |
| CN106544566A (en) * | 2016-10-28 | 2017-03-29 | 四川科力特硬质合金股份有限公司 | A kind of corrosion-resistant and high-temperature resistant hard alloy and preparation method thereof |
| CN107676034A (en) * | 2017-09-19 | 2018-02-09 | 西迪技术股份有限公司 | A kind of high-abrasive material and torsion impact device |
| CN113234981A (en) * | 2021-05-20 | 2021-08-10 | 九江金鹭硬质合金有限公司 | High-temperature-resistant high-thermal-expansion-coefficient hard alloy |
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| CN101215662A (en) * | 2008-01-07 | 2008-07-09 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
| CN101892411A (en) * | 2010-08-09 | 2010-11-24 | 中国地质大学（北京） | Novel WC-based hard alloy material and preparation method thereof |
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2011
- 2011-12-26 CN CN2011104413086A patent/CN102424929A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101215662A (en) * | 2008-01-07 | 2008-07-09 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
| CN101892411A (en) * | 2010-08-09 | 2010-11-24 | 中国地质大学（北京） | Novel WC-based hard alloy material and preparation method thereof |
Non-Patent Citations (2)
| Title |
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| PENG WU ET AL.: "Effect of TaC addition on the microstructures and mechanical properties of Ti(C,N)-based cermets", 《MATERIALS AND DESIGN》, vol. 31, 29 January 2010 (2010-01-29), pages 3537 - 3541 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060652A (en) * | 2013-01-25 | 2013-04-24 | 地质矿产部无锡钻探工具厂 | High-temperature-resistant alloy and production process thereof |
| CN106191606A (en) * | 2016-07-15 | 2016-12-07 | 无锡森锐硬质合金制品有限公司 | A kind of high temperature cemented carbide |
| CN106544566A (en) * | 2016-10-28 | 2017-03-29 | 四川科力特硬质合金股份有限公司 | A kind of corrosion-resistant and high-temperature resistant hard alloy and preparation method thereof |
| CN107676034A (en) * | 2017-09-19 | 2018-02-09 | 西迪技术股份有限公司 | A kind of high-abrasive material and torsion impact device |
| CN113234981A (en) * | 2021-05-20 | 2021-08-10 | 九江金鹭硬质合金有限公司 | High-temperature-resistant high-thermal-expansion-coefficient hard alloy |
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Application publication date: 20120425 |