CN105603251B - A kind of Copper Alloy Valve and preparation method thereof - Google Patents
A kind of Copper Alloy Valve and preparation method thereof Download PDFInfo
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- CN105603251B CN105603251B CN201511032861.9A CN201511032861A CN105603251B CN 105603251 B CN105603251 B CN 105603251B CN 201511032861 A CN201511032861 A CN 201511032861A CN 105603251 B CN105603251 B CN 105603251B
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- copper alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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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
- C22C1/02—Making non-ferrous alloys by melting
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0089—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with other, not previously mentioned inorganic compounds as the main non-metallic constituent, e.g. sulfides, glass
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- Powder Metallurgy (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of Copper Alloy Valve and preparation method thereof, and its component is as mass fraction：15~18% carbonyl nickel iron powder, 1~2% aluminium, 2~4% magnesium, 0.5~0.8% tin, 1.5~2.0% cobalt and 0.1~0.2% cerium fluoride, surplus are copper and inevitable nonmetal inclusion.So as to, the Copper Alloy Valve is mutually acted synergistically by each component, to solve casting, monel valve inner defect is more, compactness the problem of, to improve reliability, the yield rate of Copper Alloy Valve, so as to extend the service life of Copper Alloy Valve.
Description
Technical field
It is a kind of suitable for copper alloy of valve body and preparation method thereof specifically the present invention relates to a kind of alloy field.
Background technology
Valve body is a main parts size in valve, can be had after sealing is formed together with valve element and valve seat insert
Effect bears pressure medium.The material of valve body is according to different processing mediums, from different materials.Cast iron can be divided into according to material
Valve body, carbon steel valve body, Copper Alloy Valve etc..
Monel in valve body manufacture field due to good mechanical performance, wearability, corrosion resistance etc., obtaining extensively
Utilization, but in view of the poor hot-working character of monel, the forming mode of monel bar is mainly casting, but be cast as
The monel of type has that internal flaw is more, and compactness is poor, and the problems such as easily seepage occur is used for a long time, and this to cast ambrose alloy
Reliability, yield rate, service life, stock utilization of alloy etc. are restricted；And prior art prepares monel
Need to be complicated by pressure processing repeatedly, homogenizing annealing, and its processing technology, cause existing monel cost higher.
The content of the invention
It is a primary object of the present invention to provide a kind of Copper Alloy Valve and preparation method thereof, to solve prior art cast
The problem of monel valve inner defect is more, compactness is poor, to improve reliability, the yield rate of Copper Alloy Valve, so as to prolong
The service life of long Copper Alloy Valve.
To achieve the above objectives, the technical solution adopted by the present invention is：A kind of component of Copper Alloy Valve presses mass fraction
It is calculated as：15~18% carbonyl nickel iron powder, 1~2% aluminium, 2~4% magnesium, 0.5~0.8% tin, 1.5~2.0% cobalt
And 0.1~0.2% cerium fluoride, surplus is copper and inevitable nonmetal inclusion.
According to one embodiment of the invention, carbonyl nickel iron powder is FNT-B1, and mass fraction of the iron in carbonyl nickel iron powder is
20~40%.
According to one embodiment of the invention, the inevitable impurity content≤2wt%.
According to one embodiment of the invention, a kind of preparation method of Copper Alloy Valve, including step：
S100 meltings prepare mixed liquor, add fine copper ingot, after being heated to 1200~1250 DEG C after the fusing of fine copper ingot, add successively
Enter carbonyl nickel iron powder, aluminium, magnesium, tin, cobalt and the cerium fluoride of respective quality part, stirring is warming up to melting 5 at 1240~1280 DEG C
~10min, is made mixed liquor；And
The mixed liquor is cast in valve body metal die by S200, when vibration is cooled to 900 ± 20 DEG C, opens mould,
Molded blank is taken out, room temperature is air-cooled to.
According to one embodiment of the invention, in the step S100, whipping step be after stirring constant temperature 20~
25min, 1240~1280 DEG C are warming up to after being again stirring for uniformly.
According to one embodiment of the invention, in the step S200, valve body metal die is first placed in dither,
The mixed liquor is cast in after valve body metal die, dither starts to vibrate, when casting is cooled to 900 ± 20 DEG C in mould
Stop vibration.
Beneficial effects of the present invention are：
1st, copper and mickel is face-centred cubic structure, during high temperature, and both can form solid solution, but in low temperature, i.e., 350~
400 DEG C, two-phase is easily separated；The atomic volume of copper and iron is 7.1cm3/ mol, Ni atomic volume 6.59cm3/ mol,
In high temperature, i.e., all it is again face-centred cubic structure at 1000 DEG C~1350 DEG C because Fe is identical with Cu atomic volume, both
Part exchange can occur for metallic atom, form solid solution；The carbonyl nickel iron powder FNT-B1 of addition, can be merged with matrix, can
To reduce the defect of monel valve inner, increase the compactness of valve body；Again due to containing iron in carbonyl nickel iron powder FNT-B1,
It can prevent that two-phase is separated in low temperature；
2nd, the cerium fluoride and Sn added in the copper alloy composition of the valve body, can improve the stream of the mixed liquor in preparation
Dynamic property, increases the pourability of mixed liquor, and the Co of addition can increase the intensity of Copper Alloy Valve.
Embodiment
Describe to be used to disclose the present invention below so that those skilled in the art can realize the present invention.It is excellent in describing below
Embodiment is selected to be only used as citing, it may occur to persons skilled in the art that other obvious modifications.
A kind of component of Copper Alloy Valve is as mass fraction：15~18% carbonyl nickel iron powder, 1~2% aluminium, 2
~4% magnesium, 0.5~0.8% tin, 1.5~2.0% cobalt and 0.1~0.2% cerium fluoride, surplus are copper and can not kept away
The nonmetal inclusion exempted from.
Wherein, carbonyl nickel iron powder FNT-B1 composition and granularity meets YS/T 634-2007《Carbonyl nickel iron powder》Regulation.
Wherein mass fraction of the iron in carbonyl nickel iron powder is 20~40%, and particle mean size is 1~7 micron.
Wherein, the inevitable impurity content≤2wt%.
Wherein, copper and mickel is face-centred cubic structure, during high temperature, and both can form solid solution, but in low temperature, i.e.,
350~400 DEG C, two-phase is easily separated；The atomic volume of copper and iron is 7.1cm3/ mol, Ni atomic volume
6.59cm3/ mol, is that the center of area is stood again in high temperature, i.e., at 1000 DEG C~1350 DEG C because Fe is identical with Cu atomic volume
Part exchange can occur for square structure, both metallic atoms, form solid solution；The carbonyl nickel iron powder FNT-B1 of addition, can
Merged with matrix, it is possible to reduce the defect of monel valve inner, increase the compactness of valve body；Again due to carbonyl nickel iron powder
Contain iron in FNT-B1, can prevent in low temperature, i.e., 350~400 DEG C, two-phase is easily separated.
The cerium fluoride and Sn added in the copper alloy composition of the valve body, can improve the flowing of the mixed liquor in preparation
Property, increase the pourability of mixed liquor, the Co of addition can increase the intensity of Copper Alloy Valve.
Wherein, solid solubility of the aluminium in copper about 10%, can improve the intensity, hardness, corrosion resistance of copper alloy；Add
Magnesium, can improve the oxidation-resistance property of copper, be also the deoxidier of copper alloy, in fusion process, play deoxidation.
So as to which the Copper Alloy Valve is mutually acted synergistically by each component, is lacked with solving casting monel valve inner
The problem of falling into many, compactness, to improve reliability, the yield rate of Copper Alloy Valve, so as to extend the service life of Copper Alloy Valve.
A kind of preparation method of Copper Alloy Valve, including step：
S100 meltings prepare mixed liquor, add fine copper ingot, after being heated to 1200~1250 DEG C after the fusing of fine copper ingot, add successively
Enter carbonyl nickel iron powder, aluminium, magnesium, tin, cobalt and the cerium fluoride of respective quality part, stirring is warming up to melting 5 at 1240~1280 DEG C
~10min, is made mixed liquor；And
The mixed liquor is cast in valve body metal die by S200, when vibration is cooled to 900 ± 20 DEG C, opens mould,
Molded blank is taken out, room temperature is air-cooled to.
Wherein, in the step S100, whipping step is 20~25min of constant temperature after stirring, and is again stirring for
1240~1280 DEG C are warming up to after even.So as to when preparing mixed liquor, by way of stirring twice, be conducive to increase to mix
The uniformity and dispersion stabilization of liquid.
Wherein, in the step S200, valve body metal die is first placed in dither, the mixed liquor is poured into a mould
In after valve body metal die, dither starts to stop vibration when casting in vibration, mould is cooled to 900 ± 20 DEG C.So as to,
After casting complete, vibrated by dither, can further increase the consistency of Copper Alloy Valve.
Wherein,, can be with by way of molding cooling at 900 ± 20 DEG C in the preparation method of the Copper Alloy Valve
Increase cooling velocity, prevent copper from being separated out from iron compared with limits.
Valve body copper alloy tensile strength prepared by the present invention can reach 650~720MPa, and consistency is >=98%；General
The tensile strength of valve body copper alloy is 450MPa~600MPa, and consistency computational methods of the present invention are, first according to valve body
Various composition ratio, the density of copper alloy, calculate solid density, then using the actual density divided by theory of valve body copper alloy
Density, the system that the valve body copper alloy that in the market is bought is learnt by testing actual measurement is 92%~95%.
Embodiment 1 is to embodiment 4
As shown in table 1, the preparation method of embodiment 1 to embodiment 4 is as follows for the material composition of Copper Alloy Valve：
1) melting：Fine copper ingot is first added, after being heated to 1200~1250 DEG C after the fusing of fine copper ingot, carbonyl is then sequentially added
Ferronickel powder FNT-B1, Al, Mg, Sn, Co, cerium fluoride, 20~25min of constant temperature after stirring；It is warming up to after being again stirring for uniformly
5~10min of melting at 1240~1280 DEG C, obtains the mixed liquor of melting；
2) pour into a mould：Valve body metal die is placed on dither, mixed liquor is poured into valve body metal die, it is high
Frequency vibration device starts to stop vibration when casting in vibration, mould is cooled to 900 ± 20 DEG C, opens mould, takes out molded blank, then
It is air-cooled to room temperature.
Comparative example 1 is to comparative example 4
The composition of Cu alloy material is shown in Table 1 comparative example 1-4.
Cu alloy material of the present invention for valve body, its making step is as follows：
1) melting：Fine copper ingot is first added, after being heated to 1200~1250 DEG C after the fusing of fine copper ingot, carbonyl is then sequentially added
Ferronickel powder FNT-B1, Al, Mg, Sn, Co, cerium fluoride, 20~25min of constant temperature after stirring；It is warming up to after being again stirring for uniformly
5~10min of melting at 1240~1280 DEG C, obtains the mixed liquor of melting；
2) pour into a mould：Valve body metal die is placed on dither, the mixed liquor is poured into valve body metal die
In, dither starts to stop vibration when casting in vibration, mould is cooled to 900 ± 20 DEG C, opens mould, takes out shaping hair
Base, is then air-cooled to room temperature.
Comparative example 5
The composition of Cu alloy material is shown in Table 1 comparative example 5.
Cu alloy material of the present invention for valve body, its making step is as follows：
1) melting：Fine copper ingot is first added, after being heated to 1240~1280 DEG C after the fusing of fine copper ingot, carbonyl is then sequentially added
Ferronickel powder FNT-B1, Al, Mg, Sn, Co, cerium fluoride, 25~35min of constant temperature after stirring, obtain the mixed liquor of melting；
2) pour into a mould：The mixed liquor is poured into valve body metal die, room temperature is cooled to, blank is taken out.
Comparative example 6
The composition of Cu alloy material is shown in Table 1 comparative example 6.
1) melting：Fine copper ingot is first added, after being heated to 1200~1250 DEG C after the fusing of fine copper ingot, carbonyl is then sequentially added
Ferronickel powder FNT-B1, Al, Mg, Sn, Co, cerium fluoride, are warming up to 5~10min of melting at 1240~1280 DEG C, obtain after stirring
To the mixed liquor of melting；
2) pour into a mould：Valve body metal die is placed on dither, mixed liquor is poured into valve body metal die, it is high
Frequency vibration device starts to stop vibration when casting in vibration, mould is cooled to 900 ± 20 DEG C, opens mould, takes out molded blank, then
It is air-cooled to room temperature.
Performance test is carried out to valve body prepared by each embodiment and comparative example, test result is shown in Table 2.
Wherein tensile strength test method uses GB/T 228.1-2010《Metal material stretching test part 1：Room temperature
Test method》；Testing equipment uses WDW-300A electronic universal testers；The actual density of Copper Alloy Valve uses buoyancy method,
Instrument uses metal material densitometer AU-200ME.
The material composition wt% of the Copper Alloy Valve of table 1
The performance parameter of the Cu alloy material of table 2
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and that described in above-described embodiment and specification is the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its
Equivalent is defined.
Claims (4)
1. a kind of Copper Alloy Valve, it is characterised in that its component is as mass fraction：15~18% carbonyl nickel iron powder, 1~
2% aluminium, 2~4% magnesium, 0.5~0.8% tin, 1.5~2.0% cobalt and 0.1~0.2% cerium fluoride, surplus is copper
And inevitable nonmetal inclusion, wherein, carbonyl nickel iron powder is FNT-B1, and mass fraction of the iron in carbonyl nickel iron powder is 20
~40%.
2. Copper Alloy Valve according to claim 1, it is characterised in that the inevitable impurity content≤2wt%.
3. the preparation method of a kind of Copper Alloy Valve as described in any in claim 1~2, it is characterised in that including step：
S100 meltings prepare mixed liquor, add fine copper ingot, after being heated to 1200~1250 DEG C after the fusing of fine copper ingot, sequentially add phase
Carbonyl nickel iron powder, aluminium, magnesium, tin, cobalt and the cerium fluoride of mass parts are answered, 20~25min of constant temperature after stirring is again stirring for
5~10min of melting at 1240~1280 DEG C is warming up to after even, mixed liquor is made；And
The mixed liquor is cast in valve body metal die by S200, when vibration is cooled to 900 ± 20 DEG C, opens mould, is taken out
Molded blank, is air-cooled to room temperature.
4. preparation method according to claim 3, it is characterised in that in the step S200, first by valve body metal pattern
Tool is placed in dither, and the mixed liquor is cast in after valve body metal die, and dither starts casting in vibration, mould
Stop vibration when being cooled to 900 ± 20 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511032861.9A CN105603251B (en) | 2015-12-29 | 2015-12-29 | A kind of Copper Alloy Valve and preparation method thereof |
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| CN201511032861.9A CN105603251B (en) | 2015-12-29 | 2015-12-29 | A kind of Copper Alloy Valve and preparation method thereof |
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| CN105603251B true CN105603251B (en) | 2017-10-17 |
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| CN111304491B (en) * | 2020-03-20 | 2021-09-24 | 兰州文理学院 | Copper-based self-lubricating composite material capable of being used at room temperature to 500 ℃ and preparation method and application thereof |
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| CN102994801A (en) * | 2012-11-26 | 2013-03-27 | 中国铝业股份有限公司 | Alloy material applicable to inert anode of metal molten salt electrolytic cell |
| CN103509966B (en) * | 2013-10-18 | 2015-09-09 | 苏州天兼新材料科技有限公司 | A kind of alloy material and manufacture method thereof being applicable to aerospace field |
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