CN109022878A - Foamed alloy and its preparation method and application for air-conditioning sound-deadening and noise-reducing - Google Patents
Foamed alloy and its preparation method and application for air-conditioning sound-deadening and noise-reducing Download PDFInfo
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- CN109022878A CN109022878A CN201811058715.7A CN201811058715A CN109022878A CN 109022878 A CN109022878 A CN 109022878A CN 201811058715 A CN201811058715 A CN 201811058715A CN 109022878 A CN109022878 A CN 109022878A
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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
- C22C1/08—Alloys with open or closed pores
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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
- C22C1/08—Alloys with open or closed pores
- C22C1/081—Casting porous metals into porous preform skeleton without foaming
- C22C1/082—Casting porous metals into porous preform skeleton without foaming with removal of the preform
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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
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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Abstract
The invention discloses the foamed alloys and its preparation method and application for air conditioner sound-deadening and noise-reducing, wherein foamed alloy includes copper, aluminium, magnesium, scandium and manganese.By using copper as basis material in the present invention, and make copper and aluminium, magnesium, scandium and manganese that foamed alloy be collectively formed, can not only make foamed alloy that there is preferable sound-deadening and noise-reducing effect, can also make foamed alloy that there is excellent mechanical property and corrosion resistance.
Description
Technical field
The present invention relates to field of air conditioning, in particular to for air conditioner sound-deadening and noise-reducing foamed alloy and its preparation
Methods and applications.
Background technique
In the related technology, air conditioning pipe system generally includes various terminal, muffler and filter etc., and refrigerant is in air-conditioner pipe
It is recycled in the system of road, air conditioning pipe system can generate noise during operation of air conditioner, these noises are by refrigerant by outdoor
Machine is transmitted to interior, influences the usage experience of user, and there is also some impurity in these refrigerants, these impurity are long in air-conditioning
In the case that phase runs, pipeline inner wall can be caused to damage；It in addition, air compressor is as power source, while being also a kind of strong
Noise device brings very big influence to the production and living of people, brings high risks to the health of people.Therefore, to sky
Row sound-deadening and noise-reducing is transferred in have a very important significance.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is the foamed alloy and its preparation method and application for proposing to be used for air conditioner sound-deadening and noise-reducing.The foamed alloy is not only
With preferable sound-deadening and noise-reducing effect, also there is excellent mechanical property and corrosion resistance.
According to the first aspect of the invention, the invention proposes a kind of foamed alloys for air conditioner sound-deadening and noise-reducing.
According to an embodiment of the invention, the foamed alloy includes copper, aluminium, magnesium, scandium and manganese.
Foamed alloy according to the above embodiment of the present invention, inventors have found that foam copper has preferable sound-deadening and noise-reducing effect,
It can be used for air-conditioning sound-deadening and noise-reducing, but foam copper, using fine copper as raw material, mechanical property is poor, and corruption easily occur in high corrosion environment
Erosion.By using copper as basis material in the present invention, and make copper and aluminium, magnesium, scandium and manganese that foamed alloy be collectively formed, can not only make
Foamed alloy has preferable sound-deadening and noise-reducing effect, and foamed alloy can also be made to have excellent mechanical property and corrosion resistance
Energy.
In addition, foamed alloy according to the above embodiment of the present invention can also have the following additional technical features:
In some embodiments of the invention, foamed alloy include: the copper of 100 parts by weight, 10-15 parts by weight aluminium,
The manganese of the magnesium of 0.5-1 parts by weight, the scandium of 0.5-1 parts by weight and 1-5 parts by weight.Thus, it is possible to further increase foamed alloy
Mechanical property and corrosion resistance.
In some embodiments of the invention, the tensile strength of the foamed alloy is not less than 340MPa.
In some embodiments of the invention, the yield strength of the foamed alloy is not less than 195MPa.
In some embodiments of the invention, the elongation percentage of the foamed alloy is not less than 24%.
In some embodiments of the invention, the corrosion weight loss rate of the foamed alloy is not more than 0.035 milligram/year.
In some embodiments of the invention, the hole of the foamed alloy is through-hole.It is possible thereby to have foamed alloy
There are better aeration and bigger specific surface area, and then can be further improved the sound-deadening and noise-reducing effect of foamed alloy.
According to the second aspect of the invention, the above-mentioned foam for air-conditioning sound-deadening and noise-reducing is prepared the invention proposes a kind of
The method of alloy.According to an embodiment of the invention, this method comprises:
(1) salt particle is filled into mold to be compacted and heated, kept the temperature；
(2) fine copper is heated and melts and obtains fine copper molten liquid, fine aluminium, pure magnesium, pure is added into the fine copper molten liquid
Scandium and pure manganese, to obtain multicomponent alloy melt；
(3) the multicomponent alloy melt is poured into the mold in step (1) filled with the salt particle, the closed mould
Have and be passed through inert gas into the mold, to make the multicomponent alloy melt rapid osmotic to the gap of the salt particle
In, and cooling obtains foamed alloy presoma；
(4) water-washing desalting is carried out to the foamed alloy presoma, to obtain foamed alloy.
The method according to the above embodiment of the present invention for preparing foamed alloy, by using copper as basis material, and make copper with
Foamed alloy is collectively formed in aluminium, magnesium, scandium and manganese, and foamed alloy can not only be made to have preferable sound-deadening and noise-reducing effect, can be with
Make foamed alloy that there is excellent mechanical property and corrosion resistance.In addition, this method also has simple process, at low cost excellent
Point, and by further adjusting process parameter can also further control the foamed alloy being finally prepared porosity,
Pore size and specific surface area, to make the foamed alloy being finally prepared that there is better mechanical property and sound-deadening and noise-reducing to imitate
Fruit.
In some embodiments of the invention, in step (1), the partial size of the salt particle is 0.55-1.7mm, described to add
The temperature of heat is 800-1200 DEG C, and the soaking time is 0.5-3 hours.It is possible thereby to further increase the mechanics of foamed alloy
Performance and sound-deadening and noise-reducing effect.
In some embodiments of the invention, further comprise before the step (1): by crude salt particle with 10-15 DEG C/
The heating speed of min is warming up to 600-800 DEG C and is roasted；Crude salt particle after the roasting is carried out cooling and broken
Screening, to obtain the salt particle.It is possible thereby to further increase the mechanical property and sound-deadening and noise-reducing effect of foamed alloy.
In some embodiments of the invention, in step (2), it is based on the fine copper molten liquid, the pure of 10-15wt% is added
Aluminium, the pure magnesium of 0.5-1wt%, the pure scandium of 0.5-1wt% and 1-5wt% pure manganese, to obtain the multicomponent alloy melt.By
This, can make the foamed alloy being finally prepared have both excellent mechanical property and corrosion resistance.
According to the third aspect of the present invention, the invention proposes a kind of mufflers for air-conditioning.It is according to the present invention
Embodiment, the muffler have foamed alloy described in the above embodiment of the present invention or make using described in the above embodiment of the present invention
The foamed alloy that the method for standby foamed alloy obtains.It can not only make to disappear by using the foamed alloy of the above embodiment of the present invention
Sound device has preferable sound-deadening and noise-reducing effect, simultaneously because foamed alloy has excellent mechanical property and corrosion resistance, also
The service life of muffler can further be extended.
According to the fourth aspect of the present invention, the invention proposes a kind of blimps for compressor of air conditioner.According to this
The embodiment of invention, the blimp have foamed alloy described in the above embodiment of the present invention or use the above embodiment of the present invention
The foamed alloy that the method for preparing foamed alloy obtains.Not only may be used by using the foamed alloy of the above embodiment of the present invention
So that blimp has preferable soundproof effect, simultaneously because foamed alloy has excellent mechanical property and corrosion resistance,
The service life of blimp can also further be extended.
According to the fifth aspect of the present invention, the invention proposes a kind of air-conditionings.According to an embodiment of the invention, the air-conditioning
With described in the above embodiment of the present invention be used for air-conditioning muffler and/or the above embodiment of the present invention described in be used for air-conditioning
The blimp of compressor.Generated noise when operation of air conditioner not only can be effectively reduced as a result, promote user experience, moreover it is possible to
It further decreases the production cost of air-conditioning and extends the service life of air-conditioning.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the method according to an embodiment of the invention for preparing foamed alloy.
Fig. 2 is the structural schematic diagram of the muffler according to an embodiment of the invention for air-conditioning.
Fig. 3 is the structural schematic diagram of the muffler for air-conditioning of another embodiment according to the present invention.
Fig. 4 is the structural schematic diagram of the blimp according to an embodiment of the invention for compressor of air conditioner.
Fig. 5 is the schematic cross-section of the blimp according to an embodiment of the invention for compressor of air conditioner.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
According to the first aspect of the invention, the invention proposes a kind of foamed alloys for air conditioner sound-deadening and noise-reducing.
According to an embodiment of the invention, the foamed alloy includes copper, aluminium, magnesium, scandium and manganese.Foam according to the above embodiment of the present invention closes
Gold can be used for air-conditioning sound-deadening and noise-reducing, but foam copper is with fine copper inventors have found that foam copper has preferable sound-deadening and noise-reducing effect
Raw material, mechanical property is poor, and easily corrodes in high corrosion environment.By using copper as basis material in the present invention, and make
Foamed alloy is collectively formed in copper and aluminium, magnesium, scandium and manganese, so that foamed alloy is had preferable sound-deadening and noise-reducing effect, also
It can make foamed alloy that there is excellent mechanical property and corrosion resistance.
According to a particular embodiment of the invention, foamed alloy may include: the copper of 100 parts by weight, 10-15 parts by weight
Aluminium, the magnesium of 0.5-1 parts by weight, the scandium of 0.5-1 parts by weight and 1-5 parts by weight manganese.Inventors have found that aluminium, magnesium, scandium and manganese add
Dosage has a great impact to the mechanical property and corrosion resistance of foamed alloy, such as aluminium and copper can be made to form binary chemical combination
Object makes magnesium and copper, aluminium form ternary compound and then promotes the mechanical property of copper, refines the tissue of copper in turn using scandium and manganese
The corrosion resistance of copper is promoted, and inventor is it has furthermore been found that sound preferably can be converted to machine by excellent elongation percentage
Tool energy, and then mechanical energy is changed into thermal energy consumption and falls, so that anti-acoustic capability is improved, by control foamed alloy in the present invention
Copper, aluminium, magnesium, scandium and manganese are above-mentioned composition, not only can be further improved the mechanical property and corrosion resistance of foamed alloy, make
The tensile strength of foamed alloy is not less than 24%, corrosion weight loss not less than 195MPa, elongation percentage not less than 340MPa, yield strength
Rate is not more than 0.035 milligram/year, can also further increase the sound-deadening and noise-reducing effect of foamed alloy.
A specific embodiment according to the present invention, foamed alloy may include: the copper of 100 parts by weight, 11-14 parts by weight
Aluminium, the magnesium of 0.6-0.9 parts by weight, the scandium of 0.6-0.9 parts by weight, 2-4.5 parts by weight manganese；Or 100 parts by weight copper, 12-
The aluminium of 13.5 parts by weight, the magnesium of 0.6-0.8 parts by weight, the scandium of 0.6-0.8 parts by weight, 2-4 parts by weight manganese；Or 100 parts by weight
Copper, the aluminium of 12.5-14.5 parts by weight, the magnesium of 0.5-0.75 parts by weight, the scandium of 0.7-0.95 parts by weight, 1.5-3.5 parts by weight
Manganese；Or the scandium and 1-2 of 100 copper of parts by weight, the aluminium of 10-13 parts by weight, the magnesium of 0.5-0.8 parts by weight, 0.5-0.8 parts by weight
The manganese of parts by weight.Thus, it is possible to select according to actual needs the composition of foamed alloy, and have both foamed alloy preferably
Sound-deadening and noise-reducing effect and excellent mechanical property and corrosion resistance.
Another specific embodiment according to the present invention, the hole of foamed alloy are through-hole.It is possible thereby to make foamed alloy
With better aeration and bigger specific surface area, so as to further increase the sound-deadening and noise-reducing effect of foamed alloy.
According to the second aspect of the invention, the above-mentioned foam for air-conditioning sound-deadening and noise-reducing is prepared the invention proposes a kind of
The method of alloy.According to an embodiment of the invention, with reference to Fig. 1, this method comprises:
S100: salt particle is filled into mold and is compacted and heated, kept the temperature
According to an embodiment of the invention, in the present invention by with salt particle fill mold and it is compacted, heat and
Heat preservation not only can make alloy melt form foaming structure, can also pass through the partial size of control salt particle by medium of salt particle
Under big, the pore structure for the foamed alloy that the conditions control such as heating condition and soaking time is finally prepared, porosity, aperture it is big
Small and specific surface area etc., and then there is the foamed alloy for ensuring finally to be prepared preferable mechanical property and sound-deadening and noise-reducing to imitate
Fruit.
A specific embodiment according to the present invention, the partial size of salt particle can be 0.55-1.7mm, such as 0.55mm,
0.7mm, 0.9mm, 1mm, 1.3mm or 1.65mm, the temperature of heating can be 800-1200 DEG C, such as 800 DEG C, 900 DEG C, 950
DEG C or 1100 DEG C, soaking time can be 0.5-3 hours, such as 1h, 1.5h, 2h, 2.5h or 3h.Inventors have found that if salt
The partial size of grain is too small, subsequent when pouring into multicomponent alloy melt in the mold filled with salt particle, will increase multicomponent alloy melt
Flow resistance in salt particle, and then influence penetration depth and increase of the multicomponent alloy melt in salt particle to form through-hole more
The difficulty of first alloy；And if the partial size of salt particle is excessive, and be easy to cause multicomponent alloy melt to seep salt particle and at mold bottom
Portion's aggregation molding, equally is unfavorable for forming foamed alloy.In addition, by being compacted salt particle and controlling above-mentioned heating in the present invention
Temperature and soaking time, it is possible to prevente effectively from causing multicomponent alloy molten since salt particle is larger with multicomponent alloy difference in melt temperature
Body heat content loss is too fast, pore structure and the porosity etc. that cannot effectively permeate salt particle, and then influence multicomponent alloy.As a result, originally
It is above-mentioned partial size by control salt particle in invention and controls above-mentioned heating and heat-retaining condition, can not only significantly improves polynary conjunction
Mobility and penetration depth of the golden melt in salt particle, and then so that multicomponent alloy melt is effectively penetrated into salt particle and formed
Through-hole foam structure, moreover it is possible to further increase the uniformity of foamed alloy and make foamed alloy that there is suitable porosity, aperture
Size and specific surface area, so as to further increase the mechanical property and sound-deadening and noise-reducing effect of foamed alloy.
Another specific embodiment according to the present invention, into mold fill salt particle before further comprise: will be thick
Salt particle is warming up to 600-800 DEG C with the heating speed of 10-15 DEG C/min and is roasted；By by roasting after crude salt particle into
Row cooling and crushing and screening, to obtain salt particle.Thus, it is possible to effectively control the particle size range of salt particle, and then further
Mobility and penetration depth of the multicomponent alloy melt in salt particle are controlled, multicomponent alloy melt is enable to penetrate into salt particle and shape
At through-hole foam structure, while improving the uniformity of foamed alloy and making foamed alloy that there is suitable porosity, pore size
And specific surface area, to further increase the mechanical property and sound-deadening and noise-reducing effect of foamed alloy.
Crude salt particle can be put into crucible by another specific embodiment according to the present invention, and 10- is used in electric furnace
The heating speed of 15 DEG C/min is warming up to 600-800 DEG C, furnace cooling after heat preservation 2 hours.By crude salt particle after cooling in earthenware
It is carried out in crucible after being crushed, carries out classification processing with sub-sieve 10-30 mesh, obtain the salt particle of the particle size range；By salt particle
It is put into mold, then salt particle is compacted, then mold is put into high temperature furnace and is heated to 800-1200 DEG C of heat preservation 0.5-3 hours
It is spare.
S200: fine copper is heated and melts and obtains fine copper molten liquid, fine aluminium, pure magnesium, pure scandium are added into fine copper molten liquid
With pure manganese, to obtain multicomponent alloy melt
A specific embodiment according to the present invention, fine copper block can be put into crucible, be melted fine copper using resistance furnace
Change, keeps the temperature 30 minutes after fusing；Fine aluminium block is added in crucible, is sufficiently stirred after aluminium block fusing, keeps alloy uniform, kept the temperature
30 minutes, so that copper-aluminium alloy melt be made；Pure magnesium, pure scandium are sequentially added into copper-aluminium alloy melt according to identical step
With pure manganese, multicomponent alloy melt is finally obtained.Thus, it is possible to be sufficiently mixed copper, aluminium, magnesium, scandium and manganese.
Another specific embodiment according to the present invention, be based on fine copper molten liquid, can be added 10-15wt% fine aluminium,
The pure manganese of the pure magnesium of 0.5-1wt%, the pure scandium of 0.5-1wt% and 1-5wt%, to obtain multicomponent alloy melt.Invention human hair
It is existing, aluminium, magnesium, scandium and manganese additive amount have a great impact to the mechanical property and corrosion resistance of foamed alloy, such as can be with
Aluminium and copper is set to form binary compound or so that magnesium and copper, aluminium is formed ternary compound and then promote the mechanical property of copper, utilize scandium
With the tissue of manganese refinement copper and then promote the corrosion resistance of copper, and inventor is it has furthermore been found that excellent elongation percentage can be with
Sound preferably can be converted to mechanical energy, and then mechanical energy is changed into thermal energy consumption and falls, so that anti-acoustic capability is improved, the present invention
In by control foamed alloy in copper, aluminium, magnesium, scandium and manganese be above-mentioned composition, not only can be further improved and be finally prepared
Foamed alloy mechanical property and corrosion resistance, make the tensile strength of foamed alloy not less than 340MPa, yield strength
It is not more than 0.035 milligram/year not less than 24%, corrosion weight loss rate lower than 195MPa, elongation percentage.
Another specific embodiment according to the present invention, be based on fine copper molten liquid, can be added 11-14wt% fine aluminium,
The pure magnesium of 0.6-0.9wt%, the pure scandium of 0.6-0.9wt%, 2-4.5wt% pure manganese, to obtain multicomponent alloy melt；Or add
Enter the pure manganese of the fine aluminium of 12-13.5wt%, the pure magnesium of 0.6-0.8wt%, the pure scandium of 0.6-0.8wt%, 2-4wt%, so as to
To multicomponent alloy melt；Or the addition fine aluminium of 12.5-14.5wt%, the pure magnesium of 0.5-0.75wt%, 0.7-0.95wt%'s is pure
The pure manganese of scandium, 1.5-3.5wt%, to obtain multicomponent alloy melt；Or the aluminium of 10-13wt%, 0.5-0.8wt% is added
The manganese of magnesium, the scandium of 0.5-0.8wt% and 1-2wt%.Thus, it is possible to select according to actual needs the composition of foamed alloy
It selects, and foamed alloy is made to have both preferable sound-deadening and noise-reducing effect and excellent mechanical property and corrosion resistance.
S300: multicomponent alloy melt is poured into the mold in step S100 filled with salt particle, closed mold and to mould
Inert gas is passed through in tool, to make multicomponent alloy melt rapid osmotic into the gap of salt particle, and the cooling foam that obtains closes
Golden presoma
A specific embodiment according to the present invention, after the completion of step S100 heat preservation, adjustable argon pressure table will
Multicomponent alloy melt pours into mold, then that mold is closed, then argon gas conduit mouth is extend into mold, opens argon gas cylinder valve
Door, under atmospheric pressure, multicomponent alloy melt rapid osmotic is into salt particle gap.Argon gas is closed, melt takes with after the mold is cooled
Foamed alloy presoma is obtained out.
S400: water-washing desalting is carried out to foamed alloy presoma, to obtain foamed alloy
The method according to the above embodiment of the present invention for preparing foamed alloy, by using copper as basis material, and make copper with
Foamed alloy is collectively formed in aluminium, magnesium, scandium and manganese, and foamed alloy can not only be made to have preferable sound-deadening and noise-reducing effect, can be with
Make foamed alloy that there is excellent mechanical property and corrosion resistance.In addition, this method also has simple process, at low cost excellent
Point, and by further adjusting process parameter can also further control the foamed alloy being finally prepared porosity,
Pore size and specific surface area, to make the foamed alloy being finally prepared that there is better mechanical property and sound-deadening and noise-reducing to imitate
Fruit.
According to the third aspect of the present invention, the invention proposes a kind of mufflers for air-conditioning.It is according to the present invention
Embodiment, the muffler have foamed alloy described in the above embodiment of the present invention or make using described in the above embodiment of the present invention
The foamed alloy that the method for standby foamed alloy obtains.Air-conditioning can generate noise at work, and noise is using refrigerant as propagation medium
It is passed to interior, room noise is caused to generate.Therefore, it needs to be dropped by muffler before refrigerant enters air conditioner indoor unit
It makes an uproar processing, by using the foamed alloy of the above embodiment of the present invention muffler can not only imitated with preferable sound-deadening and noise-reducing
Fruit can also further extend making for muffler simultaneously because foamed alloy has excellent mechanical property and corrosion resistance
Use the service life.
A specific embodiment according to the present invention, foamed alloy can be used for muffler in the following manner.Specifically:
As Figure 2-3, muffler may include shell 110, the first foamed alloy 120 and the second foamed alloy 130, in shell 110
It is formed with refrigerant passage, the first foamed alloy 120 and the second foamed alloy 130 are arranged in refrigerant passage, and the second foam
The thickness of alloy is different from the thickness of the first foamed alloy.Wherein, the first foamed alloy 120 can be used for reducing making an uproar in refrigerant
Sound, the second foamed alloy 130 can be used for reducing the impurity in noise and filtering refrigerant in refrigerant, and then reduce impurity pair
The damage of air-conditioner hose extends the service life of air-conditioning；And the thickness of the first foamed alloy 120 and the second foamed alloy 130
Thickness it is different, can make refrigerant and noise that can receive more barriers during traveling, to multiple frequencies of noise
Duan Jinhang noise reduction, and then can effectively promote muffler noise reduction effect.
Further, the first foamed alloy 120 and the second foamed alloy 130 can be configured to annular, at this time the first bubble
The thickness of foam alloy 120 and the second foamed alloy 130 is the distance between respective inner sidewall and lateral wall；When the first foam closes
When having a complete closure refrigerant passage in gold 120 and the second foamed alloy 130, the thickness of the foamed alloy of refrigerant passage is blocked
The as radius of refrigerant passage；The thickness of second foamed alloy 130 can be greater than the thickness of the first foamed alloy 120, and second
At least part of cross-sectional area of foamed alloy 130 is identical as the cross-sectional area of refrigerant passage.Wherein, the first foamed alloy 120
It can be set on the internal perisporium of shell 110, so that refrigerant when flowing through the shell 110 of muffler, reduces sound pollution；Second
Being at least partly filled up completely radially in refrigerant passage and by refrigerant passage, refrigerant stream can be set in foamed alloy 130
When through refrigerant passage, the sound wave in refrigerant is entered with refrigerant in the hole of the second foamed alloy 130, and sound wave causes hole
Vibration, so as to cause the vibration that the second foamed alloy 130 is whole, in the inside of the second foamed alloy 130, phase between hole
It is intercommunicated to form the alloy fiber network to check and balance and the second foamed alloy 130 is made to generate the damping for preventing sound wave from spreading, sound
Wave is converted into thermal energy after being damped, and then has haved the function that noise.Simultaneously as constantly with second in refrigerant flow process
Hole in foamed alloy 130 and the first foamed alloy 120 rubs, and can convert thermal energy for the kinetic energy in refrigerant, heat
Heat transfer can be led to and be discharged into air the sound energy that can further consume in refrigerant；In addition, based on the theory that aperture is eliminated the noise,
When refrigerant flows through the second foamed alloy 130 or the first foamed alloy 120, refrigerant is closed by the first foamed alloy 120 and the second foam
Micropore in gold 130 shunts, and can also further decrease the noise in refrigerant.
Further, the second foamed alloy 130 can be set in the middle section of refrigerant passage, and the first foamed alloy
120 are separately positioned on the front side of the second foamed alloy 130 and rear side.As a result, the first foamed alloy 120 can not only filled
The heat dissipation area of foot, after the acoustic wave energy in refrigerant is converted into thermal energy, the first foamed alloy 120 can be more quickly by refrigerant
Heat is dispersed into air, and refrigerant can also be made to come into full contact with the second foamed alloy 130, and refrigerant is passing through the second foamed alloy
The acoustic wave energy that can preferably decay in refrigerant when 130, to reduce noise.Wherein, the thickness distribution of the first foamed alloy 120
It is not particularly restricted, for example, the thickness of the first foamed alloy 120 can be uniformly distributed (as shown in Figure 2) or close to refrigerant
(as shown in Figure 3) is gradually increased on the direction in channel middle position.It should be noted that " preceding " for towards refrigerant in the present invention
The direction of outlet 111, " rear " is towards the direction of refrigerant inlet 112.
It should be noted that above-mentioned be directed to foamed alloy or prepare technical characteristic and effect described in the method for foamed alloy
Fruit is equally applicable to the muffler, and details are not described herein again.
According to the fourth aspect of the present invention, the invention proposes a kind of blimps for compressor of air conditioner.According to this
The embodiment of invention, the blimp have foamed alloy described in the above embodiment of the present invention or use the above embodiment of the present invention
The foamed alloy that the method for preparing foamed alloy obtains.The blimp is located at the outside of compressor, with for absorb by
Noise caused by compressor hinders the noise transmission of compressor, by using the above embodiment of the present invention foamed alloy not
It can only make blimp that there is preferable soundproof effect, and since foamed alloy has both excellent mechanical property and corrosion resistance
Can, it can also further extend the service life of blimp.
A specific embodiment according to the present invention, foamed alloy can be used for blimp in the following manner.Specifically,
As illustrated in figures 4-5, blimp may include sound insulation cover body 210, and sound insulation cover body 210 limits the receiving sky for accommodating compressor
Between, sound insulation cover body 210 includes foamed alloy layer 220.Wherein, foamed alloy layer 220 has high porosity and high through-hole rate
Feature, and high porosity and high through-hole rate are conducive to the absorption and decaying of sound wave, sound wave can convert in foamed alloy layer 220
For thermal energy, sound wave will lead to alloy fiber in foamed alloy layer 220 and vibrate, and alloy fiber forms network between each other and mutually leads
System can form the damping for hindering sound wave transmitting, and sound wave converts kinetic energy into thermal energy in foamed alloy layer 220, and then makes to press
Sound attenuation caused by contracting machine dissipates, and improves the sound-deadening and noise-reducing effect of blimp.
Further, blimp can be all made of foamed alloy layer 220, and then the noise for generating compressor can be with
Directly is absorbed and decayed by foamed alloy layer.Of course, it should be understood that blimp can also include other parts, such as
The support plate 230 of foamed alloy layer 220 is supported, the inner sidewall or lateral wall that foam metal layer 220 is arranged in support plate 230 are extremely
On few one, i.e. support plate 230 can be inner support plate 231 and/or external support board 232, with for foam metal layer 220 into
Row support and limit, wherein sound-absorbing hole (not shown) is also provided in support plate 230.As long as it should be noted that sound insulation
Cover includes that the technical solution of foamed alloy layer belongs to protection scope of the present invention.It should be noted that above-mentioned close for foam
Gold prepares technical characteristic and effect described in the method for foamed alloy and is equally applicable to the blimp, and details are not described herein again.
According to the fifth aspect of the present invention, the invention proposes a kind of air-conditionings.According to an embodiment of the invention, the air-conditioning
With described in the above embodiment of the present invention be used for air-conditioning muffler and/or the above embodiment of the present invention described in be used for air-conditioning
The blimp compressor of compressor.Generated noise when operation of air conditioner not only can be effectively reduced as a result, promote user's body
It tests, moreover it is possible to further decrease the production cost of air-conditioning and extend the service life of air-conditioning.
It should be noted that above-mentioned be equally applicable to this for technical characteristic described in muffler or compressor and effect
Air-conditioning, details are not described herein again.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
1, foamed alloy is prepared:
(1) crude salt particle is put into crucible, the heating speed in electric furnace using 15 DEG C/min is warming up to 800 DEG C, protects
Furnace cooling after temperature 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, carries out classification processing with 10 mesh of sub-sieve,
Obtain salt particle；Salt particle is put into mold, then salt particle is compacted, then mold is put into high temperature furnace and is heated to 1200 DEG C
Heat preservation 3 hours.
(2) 5kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing；By 500g
Fine aluminium block is added in crucible, is sufficiently stirred after the fusing of fine aluminium block, is kept alloy uniform, keeps the temperature 30 minutes, so that copper aluminium be made
Alloy melt；Successively the pure magnesium of 25g, the pure scandium of 25g, the pure manganese of 50g are added in alloy melt according to identical step, obtained polynary
Alloy melt.
(3) after the completion of the multicomponent alloy melt heat preservation in the salt particle and step (2) in step (1), argon pressure is adjusted
Table pours into multicomponent alloy melt in mold, then that mold is closed, then argon gas conduit mouth is extend into mold, opens argon
Gas cylinder valve, under gas pressure, multicomponent alloy melt rapid osmotic is into salt particle gap.Argon gas is closed, melt is with mold
After cooling, takes out and obtain foamed alloy presoma.
(4) water-washing desalting is carried out to foamed alloy presoma, obtains through-hole foam alloy.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam alloy being prepared.
Embodiment 2
1, foamed alloy is prepared:
(1) crude salt particle is put into crucible, the heating speed in electric furnace using 15 DEG C/min is warming up to 800 DEG C, protects
Furnace cooling after temperature 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, carries out classification processing with 10 mesh of sub-sieve,
Obtain salt particle；Salt particle is put into mold, then salt particle is compacted, then mold is put into high temperature furnace and is heated to 1200 DEG C
Heat preservation 3 hours.
(2) 5kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing；By 520g
Fine aluminium block is added in crucible, is sufficiently stirred after the fusing of fine aluminium block, is kept alloy uniform, keeps the temperature 30 minutes, so that copper aluminium be made
Alloy melt；Successively the pure magnesium of 28g, the pure scandium of 28g, the pure manganese of 55g are added in alloy melt according to identical step, obtained polynary
Alloy melt.
(3) after the completion of the multicomponent alloy melt heat preservation in the salt particle and step (2) in step (1), argon pressure is adjusted
Table pours into multicomponent alloy melt in mold, then that mold is closed, then argon gas conduit mouth is extend into mold, opens argon
Gas cylinder valve, under gas pressure, multicomponent alloy melt rapid osmotic is into salt particle gap.Argon gas is closed, melt is with mold
After cooling, takes out and obtain foamed alloy presoma.
(4) water-washing desalting is carried out to foamed alloy presoma, obtains through-hole foam alloy.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam alloy being prepared.
Embodiment 3
1, foamed alloy is prepared:
(1) crude salt particle is put into crucible, the heating speed in electric furnace using 15 DEG C/min is warming up to 800 DEG C, protects
Furnace cooling after temperature 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, carries out classification processing with 10 mesh of sub-sieve,
Obtain salt particle；Salt particle is put into mold, then salt particle is compacted, then mold is put into high temperature furnace and is heated to 1200 DEG C
Heat preservation 3 hours.
(2) 5kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing；By 550g
Fine aluminium block is added in crucible, is sufficiently stirred after the fusing of fine aluminium block, is kept alloy uniform, keeps the temperature 30 minutes, so that copper aluminium be made
Alloy melt；Successively the pure magnesium of 30g, the pure scandium of 30g, the pure manganese of 60g are added in alloy melt according to identical step, obtained polynary
Alloy melt.
(3) after the completion of the multicomponent alloy melt heat preservation in the salt particle and step (2) in step (1), argon pressure is adjusted
Table pours into multicomponent alloy melt in mold, then that mold is closed, then argon gas conduit mouth is extend into mold, opens argon
Gas cylinder valve, under gas pressure, multicomponent alloy melt rapid osmotic is into salt particle gap.Argon gas is closed, melt is with mold
After cooling, takes out and obtain foamed alloy presoma.
(4) water-washing desalting is carried out to foamed alloy presoma, obtains through-hole foam alloy.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam alloy being prepared.
Embodiment 4
1, foamed alloy is prepared:
(1) crude salt particle is put into crucible, the heating speed in electric furnace using 15 DEG C/min is warming up to 800 DEG C, protects
Furnace cooling after temperature 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, carries out classification processing with 10 mesh of sub-sieve,
Obtain salt particle；Salt particle is put into mold, then salt particle is compacted, then mold is put into high temperature furnace and is heated to 1200 DEG C
Heat preservation 3 hours.
(2) 5kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing；By 600g
Fine aluminium block is added in crucible, is sufficiently stirred after the fusing of fine aluminium block, is kept alloy uniform, keeps the temperature 30 minutes, so that copper aluminium be made
Alloy melt；Successively the pure magnesium of 33g, the pure scandium of 33g, the pure manganese of 65g are added in alloy melt according to identical step, obtained polynary
Alloy melt.
(3) after the completion of the multicomponent alloy melt heat preservation in the salt particle and step (2) in step (1), argon pressure is adjusted
Table pours into multicomponent alloy melt in mold, then that mold is closed, then argon gas conduit mouth is extend into mold, opens argon
Gas cylinder valve, under gas pressure, multicomponent alloy melt rapid osmotic is into salt particle gap.Argon gas is closed, melt is with mold
After cooling, takes out and obtain foamed alloy presoma.
(4) water-washing desalting is carried out to foamed alloy presoma, obtains through-hole foam alloy.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam alloy being prepared.
Embodiment 5
1, foamed alloy is prepared:
(1) crude salt particle is put into crucible, the heating speed in electric furnace using 15 DEG C/min is warming up to 800 DEG C, protects
Furnace cooling after temperature 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, carries out classification processing with 10 mesh of sub-sieve,
Obtain salt particle；Salt particle is put into mold, then salt particle is compacted, then mold is put into high temperature furnace and is heated to 1200 DEG C
Heat preservation 3 hours.
(2) 5kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing；By 650g
Fine aluminium block is added in crucible, is sufficiently stirred after the fusing of fine aluminium block, is kept alloy uniform, keeps the temperature 30 minutes, so that copper aluminium be made
Alloy melt；Successively the pure magnesium of 37g, the pure scandium of 37g, the pure manganese of 70g are added in alloy melt according to identical step, obtained polynary
Alloy melt.
(3) after the completion of the multicomponent alloy melt heat preservation in the salt particle and step (2) in step (1), argon pressure is adjusted
Table pours into multicomponent alloy melt in mold, then that mold is closed, then argon gas conduit mouth is extend into mold, opens argon
Gas cylinder valve, under gas pressure, multicomponent alloy melt rapid osmotic is into salt particle gap.Argon gas is closed, melt is with mold
After cooling, takes out and obtain foamed alloy presoma.
(4) water-washing desalting is carried out to foamed alloy presoma, obtains through-hole foam alloy.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam alloy being prepared.
Comparative example 1
1, foam copper is prepared:
(1) 5Kg crude salt particle is put into crucible, is warming up to 600 DEG C using the heating speed of 5 DEG C/min in electric furnace,
Furnace cooling after heat preservation 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, carries out classification processing with 5 mesh sub-sieves,
Obtain the salt particle of 5 mesh partial sizes；The salt particle of 5 mesh partial sizes is put into mold, is then pressed on salt particle and is pressed using wire netting
It is real, then mold is put into high temperature furnace and is heated to 900 DEG C of heat preservations 1 hour.
(2) 2kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing.
(3) after the completion of the fine copper molten liquid heat preservation in the salt particle and step (2) in step (1), argon pressure table is adjusted,
Fine copper molten liquid is poured into mold, it is then that mold is closed, then argon gas conduit mouth is extend into mold, open argon gas cylinder valve
Door, under gas pressure, fine copper molten liquid rapid osmotic is into salt particle gap.Argon gas is closed, melt takes with after the mold is cooled
Foam copper presoma is obtained out.
(4) water-washing desalting is carried out to foam copper presoma, obtains through-hole foam copper.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam copper being prepared.
Comparative example 2
1, foam copper is prepared:
(1) 5Kg crude salt particle is put into crucible, is warming up to 600 DEG C using the heating speed of 5 DEG C/min in electric furnace,
Furnace cooling after heat preservation 2 hours.It roasts salt after cooling to carry out in crucible after being crushed, be carried out at classification with 10 mesh sub-sieves
Reason obtains the salt particle of 10 mesh partial sizes；The salt particle of 10 mesh partial sizes is put into mold, is then pressed in salt particle using wire netting
Then mold is put into high temperature furnace and is heated to 900 DEG C of heat preservations 1 hour by upper compacting.
(2) 2kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing.
(3) after the completion of the fine copper molten liquid heat preservation in the salt particle and step (2) in step (1), argon pressure table is adjusted,
Fine copper molten liquid is poured into mold, it is then that mold is closed, then argon gas conduit mouth is extend into mold, open argon gas cylinder valve
Door, under gas pressure, fine copper molten liquid rapid osmotic is into salt particle gap.Argon gas is closed, melt takes with after the mold is cooled
Foam copper presoma is obtained out.
(4) water-washing desalting is carried out to foam copper presoma, obtains through-hole foam copper.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam copper being prepared.
Comparative example 3
1, foam copper is prepared:
(1) 5Kg crude salt particle is put into crucible, is warming up to 600 DEG C using the heating speed of 5 DEG C/min in electric furnace,
Furnace cooling after heat preservation 3 hours.It roasts salt after cooling to carry out in crucible after being crushed, be carried out at classification with 15 mesh sub-sieves
Reason obtains the salt particle of 15 mesh partial sizes；The salt particle of 15 mesh partial sizes is put into mold, is then pressed in salt particle using wire netting
Then mold is put into high temperature furnace and is heated to 900 DEG C of heat preservations 1 hour by upper compacting.
(2) 2kg fine copper block is put into crucible, is melted fine copper using resistance furnace, keep the temperature 30 minutes after fusing.
(3) after the completion of the fine copper molten liquid heat preservation in the salt particle and step (2) in step (1), argon pressure table is adjusted,
Fine copper molten liquid is poured into mold, it is then that mold is closed, then argon gas conduit mouth is extend into mold, open argon gas cylinder valve
Door, under gas pressure, fine copper molten liquid rapid osmotic is into salt particle gap.Argon gas is closed, melt takes with after the mold is cooled
Foam copper presoma is obtained out.
(4) water-washing desalting is carried out to foam copper presoma, obtains through-hole foam copper.
2, compressor blimp is prepared:
As shown in figure 4, blimp includes sound insulation cover body 210, sound insulation cover body 210 limits the receiving for accommodating compressor
Space, sound insulation cover body 210 are formed by the above-mentioned through-hole foam copper being prepared.
Test analysis:
Respectively to the mechanical property of the foam copper obtained in the foamed alloy and comparative example 1-3 obtained in embodiment 1-5 and
Corrosion resistance can be carried out test analysis, to the sound-deadening and noise-reducing of compressor blimp obtained in embodiment 1-5 and comparative example 1-3
Effect is tested, wherein mechanics properties testing is carried out using cupping machine, tensile speed 50mm/min, corrosion resistance
It can detect and use salt spray test, referring in particular to national standard GB_T10125-2012 salt spray test standard.Test result is shown in Tables 1 and 2.
1 mechanical property of table and sound-deadening and noise-reducing test result
2 corrosion resistance test result of table
Conclusion:
As can be seen from Table 1 and Table 2, compared with independent copper is prepared into the foam copper beaten for raw material, the embodiment of the present invention
In by using copper as basis material, and aluminium, magnesium, scandium and manganese is added and prepares foamed alloy, the foam being finally prepared can be made
Alloy has both excellent mechanical property and corrosion resistance, and detected after the air-conditioning sound cover that use is prepared with foamed alloy
Level of noise is less than the level of noise for using and detecting after the air-conditioning sound cover prepared with foam copper, the i.e. sound-deadening and noise-reducing of foamed alloy
Effect is better than foam copper.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field
The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel
And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (14)
1. a kind of foamed alloy for air conditioner sound-deadening and noise-reducing, which is characterized in that the foamed alloy includes copper, aluminium, magnesium, scandium
And manganese.
2. foamed alloy according to claim 1 characterized by comprising the copper of 100 parts by weight, 10-15 parts by weight
Aluminium, the magnesium of 0.5-1 parts by weight, the scandium of 0.5-1 parts by weight and 1-5 parts by weight manganese.
3. foamed alloy according to claim 1, which is characterized in that the tensile strength of the foamed alloy is not less than
340MPa。
4. foamed alloy according to claim 1, which is characterized in that the yield strength of the foamed alloy is not less than
195MPa。
5. foamed alloy according to claim 1, which is characterized in that the elongation percentage of the foamed alloy is not less than 24%.
6. foamed alloy according to claim 1, which is characterized in that the corrosion weight loss rate of the foamed alloy is not more than
0.035 milligram/year.
7. foamed alloy according to claim 1, which is characterized in that the hole of the foamed alloy is through-hole.
8. a kind of method for preparing any one of claim 1-7 foamed alloy characterized by comprising
(1) salt particle is filled into mold to be compacted and heated, kept the temperature；
(2) by fine copper heat melt and obtain fine copper molten liquid, into the fine copper molten liquid be added fine aluminium, pure magnesium, pure scandium and
Pure manganese, to obtain multicomponent alloy melt；
(3) the multicomponent alloy melt is poured into the mold in step (1) filled with the salt particle, the closed mold is simultaneously
It is passed through inert gas into the mold, to make the multicomponent alloy melt rapid osmotic into the gap of the salt particle,
And cooling obtains foamed alloy presoma；
(4) water-washing desalting is carried out to the foamed alloy presoma, to obtain foamed alloy.
9. according to the method described in claim 8, it is characterized in that, the partial size of the salt particle is 0.55- in step (1)
1.7mm, the temperature of the heating are 800-1200 DEG C, and the soaking time is 0.5-3 hours.
10. according to the method described in claim 8, it is characterized in that, further comprising before step (1):
Crude salt particle is warming up to 600-800 DEG C with the heating speed of 10-15 DEG C/min to roast；
Crude salt particle after the roasting is subjected to cooling and crushing and screening, to obtain the salt particle.
11. according to the method described in claim 8, it is characterized in that, being based on the fine copper molten liquid, addition in step (2)
The fine aluminium of 10-15wt%, the pure magnesium of 0.5-1wt%, the pure scandium of 0.5-1wt% and the pure manganese of 1-5wt% are described more to obtain
First alloy melt.
12. a kind of muffler for air-conditioning, which is characterized in that the muffler has claim 1-7 described in any item
Foamed alloy or the foamed alloy being prepared using the described in any item methods of claim 8-11.
13. a kind of blimp for compressor of air conditioner, which is characterized in that the blimp has any one of claim 1-7
The foamed alloy or the foamed alloy being prepared using the described in any item methods of claim 8-11.
14. a kind of air-conditioning, which is characterized in that the air-conditioning has muffler and/or claim 13 described in claim 12
The blimp.
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