CN106180738A - A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof - Google Patents
A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof Download PDFInfo
- Publication number
- CN106180738A CN106180738A CN201610670668.6A CN201610670668A CN106180738A CN 106180738 A CN106180738 A CN 106180738A CN 201610670668 A CN201610670668 A CN 201610670668A CN 106180738 A CN106180738 A CN 106180738A
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- China
- Prior art keywords
- high temperature
- rare earth
- alloy powder
- nickel cobalt
- valve
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
Abstract
The invention discloses a kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof, the most each component is C 0.6% 0.8%, B 1.5% 2.0%, Si 2.0% 2.5%, Ni 16% 20%, W 6% 8%, Cr 18% 20%, La 0.2% 1.0%, Co surplus.The present invention improves high temperature red hardness and the wearability of alloy, further increases elevated temperature strength and high temperature endurance performance, anti-wear performance and decay resistance, improves thermal shock resistance, cracking resistance.Due to Ni, Cr, W, etc. the effect of microalloying of element and RE anti-wear performance and decay resistance are all greatly improved, and thermal shock resistance, cracking resistance are improved, hardness is suitable simultaneously, it is simple to machining, can improve yield rate, reduce resource consumption.
Description
Technical field
The invention belongs to valve material technical field, particularly relate to a kind of high temperature resistant nickel cobalt tungsten rare earth alloy powder of valve
Material and preparation method thereof.
Background technology
Throttle body material is replaced by high performance martensite steel 45Cr9Si3,5Cr8Si2 the most both at home and abroad.Performance
The elevated temperature strength of best 21-4N steel is also than Germany's Valve Steel 6Cr21Mn10MoVNbN order of magnitude lower.Austenitic steel can be made
For middle and high load gasoline engine air bleeding valve material, also act as high load capacity diesel exhaust valve material.But along with compression ratio of internal-combustion engine
With the increase of Pmax, the performance of above steel grade still can not meet the requirement of sealing surface working condition, though have developed in recent years
65Mn20A15MoVNb, but material is more viscous and hard, and mechanical grinding is relatively difficult, limits use.
The now commonly used Co-base alloy material of valve-face, particularly Co02 and CoCrW is most commonly seen, the U.S., Germany,
The developed country such as Japanese, French uses above-mentioned material too, and the melting welding performance of material, machinability are the most poor, easily
Cracking and hardness deviation, yield rate is the lowest.
Summary of the invention
It is an object of the invention to provide a kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation side thereof
Method, it is intended to solving the commonly used Co-base alloy material of present valve-face, to there is melting welding performance, machinability poor, easily
Crack and hardness deviation, the problem that yield rate is the lowest.
The present invention is achieved in that a kind of high temperature resistant nickel cobalt tungsten rare earth alloy powder material of valve, and described valve is used
The high temperature resistant the most each component of nickel cobalt tungsten rare earth alloy powder material is C 0.6%-0.8%, B 1.5%-2.0%, Si
2.0%-2.5%, Ni 16%-20%, W 6%-8%, Cr 18%-20%, La 0.2%-1.0%, Co surplus.
Another object of the present invention is to provide a kind of described valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material
Preparation method, described preparation method comprises the following steps:
Step one, according to percentage by weight meter each component C 0.6%-0.8%, B 1.5%-2.0%, Si 2.0%-2.5%, Ni 16%-
20%, W 6%-8%, Cr 18%-20%, La 0.2%-1.0%, Co surplus chemical composition carry out dispensing；
Step 2, is fused into dispensing molten metal in intermediate frequency furnace, and carries out refining treatment, obtain qualified molten metal；
Smelting equipment uses KJP100(1000Hz) medium-frequency induction furnace melting, heating-up temperature is 1460-1520 DEG C, with bell jar by rare earth
In press-in high-temperature liquid metal, come out of the stove after deoxidation, refine, aerofluxus, scarfing cinder.
Step 3, prepares alloy powder by atomization, and to powder through precipitating, dry, sieve powder, inspection process is closed
The powder body material of lattice, becomes-110 ± 330 mesh powder by vacuum atomizing system alloy atomization；Atomizing pressure is 1.5-
2.5MPa, the degree of superheat is 180-200 DEG C, and atomization gas is, Ar flow-guiding mouth internal diameter is 3.5mm.
Another object of the present invention is to provide one to scribble the high temperature resistant nickel cobalt tungsten rare earth alloy powder material of described valve
The internal combustion engine wear-resisting workpiece of material.
Another object of the present invention is to provide one to scribble the high temperature resistant nickel cobalt tungsten rare earth alloy powder material of described valve
The engine valve of material.
The present invention provide valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof, due to Ni, Cr,
W, etc. the effect of microalloying of element and RE anti-wear performance and decay resistance are all greatly improved, and heat resistanceheat resistant punching
Hit performance, cracking resistance is improved, and hardness is suitable simultaneously, it is simple to machining, can improve yield rate, reduce resource consumption.
Alloy material of the present invention uses various trace elements such as rare earth, tungsten, nickel etc., improves red hardness and the friction resistant abrasiveness of material
Can, and add toughness and creep-resistant property, the use of this alloy and the processing technology of the element adjustment alloys such as suitable nickel
The needs of Current internal combustion engines development very well, can be adapted to；Due to the interpolation of high-melting point alloy element, the viscosity of aluminium alloy, mobility,
Non-oxidizability reduces, and controls the degree of superheat to require strictly simultaneously, and the present invention, by improving fast solidifying coarse vacuum atomization system, reduces
The oxygen content of powder, improves the sphericity of powder, improves the processing performance of powder fusion, enhances the consistency of coating,
And the oxygen content of the alloy powder without rare earth is 0.13～0.19%, after addition rare earth, oxygen content is 0.03～0.09%.This
Bright carrying out the work mainly for engine valve and relevant wear-resisting workpiece, main application is engine valve and relevant wear-resisting
Workpiece.
Accompanying drawing explanation
Fig. 1 is the preparation method stream of the high temperature resistant nickel cobalt tungsten rare earth alloy powder material of valve that the embodiment of the present invention provides
Cheng Tu.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention
It is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
Below in conjunction with the accompanying drawings the application principle of the present invention is explained in detail.
The valve of the embodiment of the present invention is by the high temperature resistant the most each component of nickel cobalt tungsten rare earth alloy powder material
For C 0.6%-0.8%, B 1.5%-2.0%, Si 2.0%-2.5%, Ni 16%-20%, W 6%-8%, Cr 18%-20%, La 0.2%-
1.0%, Co surplus.
As it is shown in figure 1, the valve of the embodiment of the present invention preparation method of high temperature resistant nickel cobalt tungsten rare earth alloy powder material
Comprise the following steps:
S101: first according to percentage by weight meter each component C 0.6%-0.8%, B 1.5%-2.0%, Si 2.0%-2.5%, Ni
16%-20%, W 6%-8%, Cr 18%-20%, La 0.2%-1.0%, Co surplus chemical composition carries out dispensing；
S102: the material prepared is fused in intermediate frequency furnace molten metal, and the refining treatment that it is carried out necessity, is closed
The molten metal of lattice；
S103: prepare alloy powder by atomization, to this powder through precipitating, dry, sieve powder, inspection process obtains qualified
Powder body material.By vacuum atomizing system, alloy atomization is become-110 ± 330 mesh powder.
Dispensing is fused in intermediate frequency furnace molten metal, and carries out refining treatment, obtain qualified molten metal；Melting
Equipment uses KJP100(1000Hz) medium-frequency induction furnace melting, heating-up temperature is 1460-1520 DEG C, is pressed into by rare earth with bell jar
In high-temperature liquid metal, come out of the stove after deoxidation, refine, aerofluxus, scarfing cinder.
Preparing alloy powder by atomization, to powder through precipitating, dry, sieve powder, inspection process obtains qualified powder
Body material, becomes-110 ± 330 mesh powder by vacuum atomizing system alloy atomization；Atomizing pressure is 1.5-2.5MPa, overheated
Degree is for 180-200 DEG C, and atomization gas is Ar, and flow-guiding mouth internal diameter is 3.5mm.
The alloy system that the present invention is suitable, is effectively increased high temperature red hardness and the wearability of alloy, further increases
Elevated temperature strength and high temperature endurance performance, due to Ni, Cr, W, etc. the effect of microalloying of element and RE make anti-wear performance and resistance to
Corrosive nature is all greatly improved, and thermal shock resistance, cracking resistance are improved, and hardness is suitable simultaneously, it is simple to machine
Tool is processed, and can improve yield rate, reduce resource consumption.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (4)
1. a valve is with high temperature resistant nickel cobalt tungsten rare earth alloy powder material, it is characterised in that the high temperature resistant nickel cobalt of described valve
The most each component of tungsten and rear earth alloy powder material is C 0.6%-0.8%, B 1.5%-2.0%, Si 2.0%-2.5%,
Ni 16%-20%, W 6%-8%, Cr 18%-20%, La 0.2%-1.0%, Co surplus.
2. a valve as claimed in claim 1 preparation method for high temperature resistant nickel cobalt tungsten rare earth alloy powder material, its feature
Being, described preparation method comprises the following steps:
Step one, according to percentage by weight meter each component C 0.6%-0.8%, B 1.5%-2.0%, Si 2.0%-2.5%, Ni 16%-
20%, W 6%-8%, Cr 18%-20%, La 0.2%-1.0%, Co surplus chemical composition carry out dispensing；
Step 2, is fused into dispensing molten metal in intermediate frequency furnace, and carries out refining treatment, obtain qualified molten metal；
Heating-up temperature is 1460-1520 DEG C, is pressed in high-temperature liquid metal by rare earth with bell jar, after deoxidation, refine, aerofluxus, scarfing cinder
Come out of the stove；
Step 3, prepares alloy powder by atomization, and to powder through precipitating, dry, sieve powder, inspection process obtains qualified
Powder body material, becomes-110 ± 330 mesh powder by vacuum atomizing system alloy atomization；Atomizing pressure is 1.5-2.5MPa, mistake
Temperature is 180-200 DEG C, and atomization gas is Ar, and flow-guiding mouth internal diameter is 3.5mm.
3. the resistance to grinder of internal combustion engine scribbling the high temperature resistant nickel cobalt tungsten rare earth alloy powder material of valve described in claim 1
Part.
4. one kind scribbles the engine valve with high temperature resistant nickel cobalt tungsten rare earth alloy powder material of the valve described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610670668.6A CN106180738A (en) | 2016-08-16 | 2016-08-16 | A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610670668.6A CN106180738A (en) | 2016-08-16 | 2016-08-16 | A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106180738A true CN106180738A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610670668.6A Pending CN106180738A (en) | 2016-08-16 | 2016-08-16 | A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041541A (en) * | 2019-12-30 | 2020-04-21 | 临沂鑫海新型材料有限公司 | High-performance nickel-based wear-resistant alloy |
| CN112226702A (en) * | 2020-08-17 | 2021-01-15 | 蓬莱市超硬复合材料有限公司 | Tungsten oxide alloy material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582320A (en) * | 1969-12-22 | 1971-06-01 | Robert B Herchenroeder | Cobalt base alloy |
| GB1580534A (en) * | 1976-07-13 | 1980-12-03 | Rolls Royce | Method of manufacturing alloy sheet and a sheet of alloy made thereby |
| CN1598023A (en) * | 2004-07-20 | 2005-03-23 | 兰州理工大学 | Jet smelting NiCrWRe alloy powder for aual phase flow work piece and its preparation process |
| CN101838807A (en) * | 2010-04-19 | 2010-09-22 | 浙江吉利汽车研究院有限公司 | Laser cladding coating material for inlet valve and exhaust valve of engine and coating thereof |
| CN102912189A (en) * | 2012-11-15 | 2013-02-06 | 江苏新亚特钢锻造有限公司 | Laser-cladding cobalt-based alloy powder and method for preparing same |
| CN105603260A (en) * | 2015-12-24 | 2016-05-25 | 宁波天阁汽车零部件有限公司 | High-temperature-resistant turbocharger turbine wheel |
-
2016
- 2016-08-16 CN CN201610670668.6A patent/CN106180738A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582320A (en) * | 1969-12-22 | 1971-06-01 | Robert B Herchenroeder | Cobalt base alloy |
| GB1580534A (en) * | 1976-07-13 | 1980-12-03 | Rolls Royce | Method of manufacturing alloy sheet and a sheet of alloy made thereby |
| CN1598023A (en) * | 2004-07-20 | 2005-03-23 | 兰州理工大学 | Jet smelting NiCrWRe alloy powder for aual phase flow work piece and its preparation process |
| CN101838807A (en) * | 2010-04-19 | 2010-09-22 | 浙江吉利汽车研究院有限公司 | Laser cladding coating material for inlet valve and exhaust valve of engine and coating thereof |
| CN102912189A (en) * | 2012-11-15 | 2013-02-06 | 江苏新亚特钢锻造有限公司 | Laser-cladding cobalt-based alloy powder and method for preparing same |
| CN105603260A (en) * | 2015-12-24 | 2016-05-25 | 宁波天阁汽车零部件有限公司 | High-temperature-resistant turbocharger turbine wheel |
Non-Patent Citations (3)
| Title |
|---|
| 刘玉珍等: "司太立合金的性能及应用(Ⅰ)", 《机械工程材料》 * |
| 张振宇等: "含稀土油浆泵耐磨涂层合金粉体材料的研究", 《粉末冶金技术》 * |
| 曹庆等: "激光熔覆Stellite和WFLC系列钴基粉末研究", 《材料保护》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041541A (en) * | 2019-12-30 | 2020-04-21 | 临沂鑫海新型材料有限公司 | High-performance nickel-based wear-resistant alloy |
| CN112226702A (en) * | 2020-08-17 | 2021-01-15 | 蓬莱市超硬复合材料有限公司 | Tungsten oxide alloy material and preparation method thereof |
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Application publication date: 20161207 |