CN105950928A - Magnesium alloy for motor shell of new energy vehicle and preparation method and application thereof - Google Patents
Magnesium alloy for motor shell of new energy vehicle and preparation method and application thereof Download PDFInfo
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- CN105950928A CN105950928A CN201610341869.1A CN201610341869A CN105950928A CN 105950928 A CN105950928 A CN 105950928A CN 201610341869 A CN201610341869 A CN 201610341869A CN 105950928 A CN105950928 A CN 105950928A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
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Abstract
The invention provides a magnesium alloy for a motor shell of a new energy vehicle and a preparation method and application thereof. The magnesium alloy comprises the following raw materials in percentage by mass: 92-95% of AZ31 magnesium alloy, and 5-8% of aluminum-samarium intermediate alloy. The magnesium alloy is excellent in comprehensive mechanical performance and molding performance, and can effectively achieve the lightness purpose under the precondition of guaranteeing excellent mechanical performance when being applied to the motor shell of the new energy vehicle.
Description
Technical field
The present invention relates to Material Field, in particular it relates to for New energy automobile motor shell magnesium alloy and preparation method thereof and
Application.
Background technology
Along with high speed development and the requirement of energy-saving and emission-reduction of auto industry, vehicle lightweight attention rate is improved constantly by people,
It is desirable to use more lightweight to have the material of excellent properties to reach the effect of loss of weight.Current substantial amounts of electric motor of automobile housing
It mostly is aluminium alloy with light material, and the fewest with magnesium alloy materials.Magnesium alloy is the lightest structural metallic materials, than
Intensity, specific stiffness are high, and damping capacity is good, and dampening factor is high, and is easily recycled, and is described as 21 century green engineering material.
Mg-Al series magnesium alloy is the magnesium alloy system being most widely used at present, China's applied research to this series magnesium alloy
Have made great progress, such as current wide variety of AZ91, AZ31 and AZ63 etc., but owing to its crystal structure is close
Arranging six sides, deformability difference limits its development, and numerous studies show to use some element dopings can play magnesium alloy carefully
Change crystal grain, the effect of purification melt, and the comprehensive mechanical property of magnesium alloy can be increased substantially.At present magnesium alloy adds
The element added mostly is lanthanum, cerium, yttrium, gadolinium and neodymium etc., but it is relatively costly.
Therefore, correlational study about magnesium alloy still haves much room for improvement at present.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the one of the present invention
Purpose is to propose the high-quality magnesium alloy that a kind of low cost, comprehensive mechanical property are good or are produced on a large scale.
In one aspect of the invention, the invention provides a kind of magnesium alloy for New energy automobile motor housing.According to this
Inventive embodiment, the raw material of this magnesium alloy includes: the AZ31 magnesium alloy of 92～95wt%；And 5～8wt% aluminum samarium in
Between alloy.Inventor finds, by samarium doped element in the magnesium alloy, can be effectively improved the comprehensive mechanical property of magnesium alloy,
There is the forming ability of excellence, and then the light-weighted purpose of New energy automobile motor housing can be realized, electric machine casing is greatly improved
Mechanical performance index.It addition, aluminum samarium intermediate alloy stable content, rare earth scaling loss can be prevented effectively from, reduce oxide inclusion with
And component segregation etc..
According to embodiments of the invention, gross mass based on described AZ31 magnesium alloy, described AZ31 magnesium alloy contains: 2.5～3.5
The aluminum of wt%, the zinc of 0.6～1.4wt%, the manganese of 0.2～1.0wt%, and the magnesium of surplus.
According to embodiments of the invention, in described aluminum samarium intermediate alloy, the mass percent of samarium element is 20～25%.
According to embodiments of the invention, the raw material of described magnesium alloy includes: the AZ31 magnesium alloy of 92wt%, and 8wt%
Aluminum samarium intermediate alloy.In some embodiments, gross mass based on described AZ31 magnesium alloy, described AZ31 magnesium alloy contains:
The aluminum of 2.5wt%, the zinc of 0.6wt%, the manganese of 0.2wt%, and the magnesium of surplus.In some embodiments, aluminum samarium intermediate alloy
The mass percent of middle samarium element is 25%.
According to embodiments of the invention, the raw material of described magnesium alloy includes: the AZ31 magnesium alloy of 93wt%, and 7wt%
Aluminum samarium intermediate alloy.In some embodiments, gross mass based on described AZ31 magnesium alloy, described AZ31 magnesium alloy contains:
The aluminum of 3wt%, the zinc of 1wt%, the manganese of 0.6wt%, and the magnesium of surplus.In some embodiments, described aluminum samarium intermediate alloy
The percentage by weight of middle samarium element is 23%.
According to embodiments of the invention, the raw material of described magnesium alloy includes: the AZ31 magnesium alloy of 95wt%, and 5wt%
Aluminum samarium intermediate alloy.In some embodiments, gross mass based on described AZ31 magnesium alloy, described AZ31 magnesium alloy contains:
The aluminum of 3.5wt%, the zinc of 1.4wt%, the manganese of 1.0wt%, and the magnesium of surplus.In some embodiments, in the middle of described aluminum samarium
In alloy, the percentage by weight of samarium element is 20%.
In another aspect of this invention, the invention provides a kind of method preparing magnesium alloy noted earlier.According to the present invention's
Embodiment, the method includes: pure magnesium is put in smelting furnace and is warming up to 650～700 DEG C by (1), then is sequentially placed into toasted
Intermediate alloy Al, Al-Mn and Zn, obtain the first aluminium alloy；(2) spread coverture at described first alloy liquid level and be warming up to
700～750 DEG C, add aluminum samarium intermediate alloy, stir and skim, obtaining the second aluminium alloy；(3) C is used2Cl6Refining agent is to institute
State the second aluminium alloy and carry out refine, obtain refined products；(4) argon shield is used to be cast by described refined products, and
The mode using circulating water mould is cooled to 700～720 DEG C, then stands cooling.With it, can prepare
Impurity content is low, superior in quality, and as-cast grain is tiny, the preferable magnesium alloy of mechanical property, and technique is simple, safe and reliable,
Easy to operate.
According to embodiments of the invention, described aluminum samarium intermediate alloy uses high-energy ultrasonic method to prepare, described high-energy ultrasonic method
Comprise the following steps: a) fine aluminium ingot put into crucible be heated to fusing, and by samarium add obtained by melt in, so
After at 740 DEG C be incubated 40min；B) ultrasonic amplitude transformer is stretched in the melt that step a) obtains and carry out the ultrasonic place of batch (-type)
Reason, wherein, ultrasound intensity is 1.01kw/cm2～1.1kw/cm2, ultrasonic time is 35min, described batch (-type) supersound process
Application time is 28s every time, and the intermittent time is 28s；C) in 725 DEG C～730 DEG C of temperature ranges, step b) is obtained
Product carries out refine remove impurity, sampling of then casting.
In another aspect of the invention, the invention provides a kind of electric machine casing for new-energy automobile.According to the present invention's
Embodiment, being formed by foregoing magnesium alloy at least partially of this electric machine casing.This electric machine casing has above institute
Whole feature and advantage of the magnesium alloy stated, this is no longer going to repeat them.
The present invention at least has the advantages that
1, New energy automobile motor magnesium alloy for housing according to embodiments of the present invention, can realize New energy automobile motor housing light
The purpose quantified, has the forming ability of excellence, it is possible to increase substantially the mechanical performance index of electric machine casing simultaneously.
2, the method preparing magnesium alloy according to embodiments of the present invention, can produce impurity content low, superior in quality, and as cast condition is brilliant
Grain is tiny, the preferable magnesium alloy of mechanical property, and technique is simple, safe and reliable, easy to operate.
3, the aluminum samarium intermediate alloy stable content that the present invention uses, can be prevented effectively from rare earth scaling loss, reduces oxide inclusion and one-tenth
Divide segregation etc..
Accompanying drawing explanation
Fig. 1 shows the method flow schematic diagram preparing magnesium alloy according to embodiments of the present invention.
Fig. 2 shows the method flow schematic diagram preparing aluminum samarium intermediate alloy according to embodiments of the present invention.
Detailed description of the invention
Embodiment of the present invention are described below in detail, and the embodiment described below with reference to accompanying drawing is exemplary, only
For explaining the present invention, and it is not considered as limiting the invention.
In one aspect of the invention, the invention provides a kind of magnesium alloy for New energy automobile motor housing.According to this
Inventive embodiment, the raw material of this magnesium alloy includes: the AZ31 magnesium alloy of 92～95wt%；And 5～8wt% aluminum samarium in
Between alloy.Inventor finds, by samarium doped element in the magnesium alloy, can be effectively improved the comprehensive mechanical property of magnesium alloy,
There is the forming ability of excellence, and then the light-weighted purpose of New energy automobile motor housing can be realized, electric machine casing is greatly improved
Mechanical performance index.It addition, aluminum samarium intermediate alloy stable content, rare earth scaling loss can be prevented effectively from, reduce oxide inclusion with
And the phenomenon such as component segregation.And samarium element price is relatively low and abundant raw material source.
According to embodiments of the invention, gross mass based on AZ31 magnesium alloy, AZ31 magnesium alloy contains: 2.5～3.5wt%
Aluminum, the zinc of 0.6～1.4wt%, the manganese of 0.2～1.0wt%, and the magnesium of surplus.Thus, be conducive to improving the comprehensive of magnesium alloy
Performance.
According to embodiments of the invention, in described aluminum samarium intermediate alloy, the mass percent of samarium element is 20～25%.This content model
The samarium element enclosed can be greatly improved the comprehensive mechanical property of magnesium alloy, tensile strength, yield strength, percentage elongation, hardness etc.
It is significantly improved.
According to embodiments of the invention, the raw material of above-mentioned magnesium alloy may include that the AZ31 magnesium alloy of 92wt%, and 8wt%
Aluminum samarium intermediate alloy.Thus, the excellent in mechanical performance of the magnesium alloy of the present invention, there is good processability, for new
Both can realize light-weighted purpose during energy automobile electric machine casing, can ensure that again its good mechanical property.Some are implemented
In example, gross mass based on AZ31 magnesium alloy, the AZ31 magnesium alloy of above-mentioned employing can contain: the aluminum of 2.5wt%, and 0.6
The zinc of wt%, the manganese of 0.2wt%, and the magnesium of surplus.In some embodiments, samarium unit in the aluminum samarium intermediate alloy of above-mentioned employing
Element mass percent be 25%, i.e. add after samarium percentage by weight is magnesium alloy total amount 2%.Thus, be conducive to into one
Step improves the comprehensive mechanical property of the magnesium alloy of the present invention.
According to embodiments of the invention, the raw material of the magnesium alloy of the present invention may include that the AZ31 magnesium alloy of 93wt%, with
And the aluminum samarium intermediate alloy of 7wt%.The magnesium alloy with mentioned component and proportioning shows good mechanical property and mouldability
Energy.In some embodiments, gross mass based on AZ31 magnesium alloy, the AZ31 magnesium alloy of above-mentioned employing contains: 3wt%'s
Aluminum, the zinc of 3wt%, the manganese of 0.6wt%, and the magnesium of surplus.In some embodiments, the aluminum samarium intermediate alloy of above-mentioned employing
The percentage by weight of middle samarium element is 23%, i.e. add after samarium percentage by weight is magnesium alloy total amount 1.6%.Thus, have
It is beneficial to improve further the comprehensive mechanical property of the magnesium alloy of the present invention.
According to embodiments of the invention, the raw material of the magnesium alloy of the present invention may include that the AZ31 magnesium alloy of 95wt%, with
And the aluminum samarium intermediate alloy of 5wt%.Thus, magnesium alloy according to embodiments of the present invention has the serviceability of excellence, is used for
It is capable of light-weighted purpose during New energy automobile motor housing, there is prominent mechanical property simultaneously.In some embodiments,
Gross mass based on AZ31 magnesium alloy, the AZ31 magnesium alloy of above-mentioned employing can contain: the aluminum of 3.5wt%, 1.4wt%'s
Zinc, the manganese of 1.0wt%, and the magnesium of surplus.In some embodiments, the weight of samarium element in the aluminum samarium intermediate alloy of above-mentioned employing
Amount percentage ratio be 20%, i.e. add after samarium percentage by weight is magnesium alloy total amount 1%.Thus, be conducive to improving further
The comprehensive mechanical property of the magnesium alloy of the present invention.
In another aspect of this invention, the invention provides a kind of method preparing magnesium alloy noted earlier.According to the present invention's
Embodiment, with reference to Fig. 1, the method comprises the following steps:
S100: prepare the first aluminium alloy
In this step, pure magnesium put in smelting furnace and is warming up to 650～700 DEG C, then being sequentially placed into toasted intermediate alloy
Al, Al-Mn and Zn, obtain the first aluminium alloy.
According to embodiments of the invention, in order to make intermediate alloy fully be dried and dehydration, need before using intermediate alloy is carried out
Baking, in practical operation, concrete baking condition, equipment are not particularly limited, as long as being capable of being dried, being dehydrated
Purpose, those skilled in the art can select flexibly according to actual operating conditions.
S200: prepare the second aluminium alloy
In this step, spread salt-mixture coverture at the first alloy liquid level obtained above and be warming up to 700～750 DEG C, adding
Aluminum samarium intermediate alloy, stirs and skims, and obtains the second aluminium alloy.
According to embodiments of the invention, the coverture used in this step is the salt-mixture coverture that this area is conventional, this area
Technical staff can select the most flexibly.
According to embodiments of the invention, the aluminum samarium intermediate alloy of above-mentioned employing can use high-energy ultrasonic method to prepare, specifically,
With reference to Fig. 2, above-mentioned high-energy ultrasonic method may comprise steps of:
S10 prepares melt: fine aluminium ingot is put into crucible and is heated to fusing, and in the melt obtained by samarium is added,
Then at 740 DEG C, it is incubated 40min；S20 supersound process: ultrasonic amplitude transformer is stretched in the melt that step S10 obtains and carry out
Batch (-type) supersound process, wherein, ultrasound intensity is 1.01kw/cm2～1.1kw/cm2, ultrasonic time is 35min, described between
The each application time of formula of having a rest supersound process is 28s, and the intermittent time is 28s；S30 refine and casting: 725 DEG C～730 DEG C of temperature
Product step S20 obtained in the range of degree carries out refine remove impurity, sampling of then casting.Close in the middle of the aluminum samarium that the method prepares
Gold content is stable, it is possible to is prevented effectively from rare earth scaling loss, reduces the phenomenon such as oxide inclusion and component segregation.
S300: refine
In this step, C is used2Cl6Refining agent carries out refine to the second aluminium alloy obtained above, obtains refined products.According to
Embodiments of the invention, the actual conditions of refine is not particularly limited, and those skilled in the art can be according to product needed, work
Make environment etc. rationally to select.
S400: cast and cool down
In this step, use argon shield to be cast by the product that above-mentioned refine obtains, then use circulating water mould
The mode of tool is cooled to 700～720 DEG C, then stands cooling, obtains magnesium alloy.
By the method for the present invention, it is possible to prepare impurity content low, superior in quality, as-cast grain is tiny, mechanical property
Preferably magnesium alloy, and technique is simple, safe and reliable, easy to operate.
In another aspect of the invention, the invention provides a kind of electric machine casing for new-energy automobile.According to the present invention's
Embodiment, being formed by foregoing magnesium alloy at least partially of this electric machine casing.This electric machine casing has above institute
Whole feature and advantage of the magnesium alloy stated, this is no longer going to repeat them.
Embodiments of the invention are described below in detail.The embodiments described below is exemplary, is only used for explaining the present invention,
And be not considered as limiting the invention.Unreceipted concrete technology or condition in embodiment, according to the document in this area
Described technology or condition or carry out according to product description.Agents useful for same or instrument unreceipted production firm person, be
Can by city available from conventional products.
Embodiment 1:
Raw material and proportioning: prepare the raw material of magnesium alloy be weight percentage 92% AZ31 magnesium alloy and mass percent
Being the aluminum samarium intermediate alloy of 8%, wherein, in AZ31 magnesium alloy, the percentage by weight of each element is: Al:2.5%, Zn:
0.6%, Mn:0.2%, surplus is magnesium.In aluminum samarium intermediate alloy, the percentage by weight of samarium element is 25%, samarium after interpolation
Percentage by weight is magnesium alloy total amount 2%.
Preparation method:
The preparation of aluminum samarium intermediate alloy: 1) first fine aluminium ingot put into crucible be heated to fusing, rare earth samarium is joined
In above-mentioned melt, then it is incubated 40min at 740 DEG C；2) ultrasonic amplitude transformer is stretched in melt obtained above
Carrying out batch (-type) supersound process, ultrasound intensity is 1.01kw/cm2～1.1kw/cm2, ultrasonic time is 35min, high energy
Ultrasonic each application time 28s, intermittent time 28s；3) refine remove impurity in 725 DEG C～730 DEG C of temperature ranges, waters
Casting sampling.
The preparation of magnesium alloy: first put in smelting furnace by pure magnesium, is warming up to 650～700 DEG C, then is sequentially placed into toasted
Intermediate alloy (according to the order of Al, Al-Mn and Zn), spreads salt-mixture coverture at alloy liquid level and carries out melt protecting；
When being warming up to 700～750 DEG C, add aluminum samarium intermediate alloy, stir and skim；Use C2Cl6Aluminium alloy is entered by refining agent
Row refine, uses Ar protective casting, uses the mode of circulating water mould to be cooled to 700～720 DEG C, stands, cold
But and get final product.
Embodiment 2:
Raw material and proportioning: prepare the raw material of magnesium alloy be weight percentage 93% AZ31 magnesium alloy and mass percent
Being the aluminum samarium intermediate alloy of 7%, wherein, in AZ31 magnesium alloy, the percentage by weight of each element is: Al:3%, Zn:
3%, Mn:0.6%, surplus is magnesium.In aluminum samarium intermediate alloy, the percentage by weight of samarium element is 23%, samarium after interpolation
Percentage by weight is the 1.6% of magnesium alloy total amount.
Preparation method is with embodiment 1.
Embodiment 3:
Raw material and proportioning: prepare the raw material of magnesium alloy be weight percentage 95% AZ31 magnesium alloy and mass percent
Being the aluminum samarium intermediate alloy of 5%, wherein, in AZ31 magnesium alloy, the percentage by weight of each element is: Al:3.5%, Zn:
1.4%, Mn:1.0%, surplus is magnesium.In aluminum samarium intermediate alloy, the percentage by weight of samarium element is 20%, samarium after interpolation
Percentage by weight is magnesium alloy total amount 1%.
Preparation method is with embodiment 1.
Embodiment 4:
According to GB GB/T128-2010 " metal material tensile tests at room method " in embodiment 1 to embodiment 3
The magnesium alloy prepared carries out the Mechanics Performance Testing being correlated with respectively, and test result is as follows:
From upper table result, the magnesium alloy of the present invention has the mechanical property of excellence.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and are not understood that
For indicating or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", "
Two " feature can express or implicitly include one or more this feature.In describing the invention, " multiple "
It is meant that two or more, unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term necessarily
It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary
Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by art personnel
And combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (15)
1. the magnesium alloy for New energy automobile motor housing, it is characterised in that the raw material of described magnesium alloy includes:
Mass fraction is the AZ31 magnesium alloy of 92～95%；And
Mass fraction is the aluminum samarium intermediate alloy of 5～8%.
Magnesium alloy the most according to claim 1, it is characterised in that gross mass based on described AZ31 magnesium alloy, institute
State AZ31 magnesium alloy to contain:
Mass fraction is the aluminum of 2.5～3.5%,
Mass fraction is the zinc of 0.6～1.4%,
Mass fraction is the manganese of 0.2～1.0%, and
The magnesium of surplus.
Magnesium alloy the most according to claim 1, it is characterised in that the quality hundred of samarium element in described aluminum samarium intermediate alloy
Proportion by subtraction is 20～25%.
4. according to the magnesium alloy described in any one of claim 1-3, it is characterised in that the raw material of described magnesium alloy includes:
Mass fraction is the AZ31 magnesium alloy of 92%, and
Mass fraction is the aluminum samarium intermediate alloy of 8%.
Magnesium alloy the most according to claim 4, it is characterised in that gross mass based on described AZ31 magnesium alloy, institute
State AZ31 magnesium alloy to contain:
Mass fraction is the aluminum of 2.5%,
Mass fraction is the zinc of 0.6%,
Mass fraction is the manganese of 0.2%, and
The magnesium of surplus.
Magnesium alloy the most according to claim 4, it is characterised in that the quality hundred of samarium element in described aluminum samarium intermediate alloy
Proportion by subtraction is 25%.
7. according to the magnesium alloy described in claim 1-3 any one claim, it is characterised in that the raw material of described magnesium alloy
Including:
Mass fraction is the AZ31 magnesium alloy of 93%, and
Mass fraction is the aluminum samarium intermediate alloy of 7%.
Magnesium alloy the most according to claim 7, it is characterised in that gross mass based on described AZ31 magnesium alloy, institute
State AZ31 magnesium alloy to contain:
Mass fraction is the aluminum of 3%,
Mass fraction is the zinc of 1.0%,
Mass fraction is the manganese of 0.6%, and
The magnesium of surplus.
Magnesium alloy the most according to claim 7, it is characterised in that the weight hundred of samarium element in described aluminum samarium intermediate alloy
Proportion by subtraction is 23%.
10. according to the magnesium alloy described in claim 1-3 any one claim, it is characterised in that described magnesium alloy former
Material includes:
Mass fraction is the AZ31 magnesium alloy of 95%, and
Mass fraction is the aluminum samarium intermediate alloy of 5%.
11. magnesium alloys according to claim 10, it is characterised in that gross mass based on described AZ31 magnesium alloy,
Described AZ31 magnesium alloy contains:
Mass fraction is the aluminum of 3.5%,
Mass fraction is the zinc of 1.4%,
Mass fraction is the manganese of 1.0%, and
The magnesium of surplus.
12. magnesium alloys according to claim 10, it is characterised in that the weight of samarium element in described aluminum samarium intermediate alloy
Percentage ratio is 20%.
Prepare the method for magnesium alloy described in any one of claim 1-12 for 13. 1 kinds, it is characterised in that including:
(1) pure magnesium put in smelting furnace and be warming up to 650～700 DEG C, then being sequentially placed into toasted intermediate alloy Al, Al-Mn
And Zn, obtain the first aluminium alloy；
(2) spreading coverture at described first alloy liquid level and be warming up to 700～750 DEG C, adding aluminum samarium intermediate alloy, stirring is also
Skim, obtain the second aluminium alloy；
(3) C is used2Cl6Refining agent carries out refine to described second aluminium alloy, obtains refined products；
(4) use argon shield to be cast by described refined products, and use the mode of circulating water mould to be cooled to
700～720 DEG C, then stand cooling.
14. methods according to claim 13, it is characterised in that described aluminum samarium intermediate alloy uses high-energy ultrasonic method
Preparation, described high-energy ultrasonic method comprises the following steps:
A) fine aluminium ingot is put into crucible and be heated to fusing, and by the melt obtained by samarium addition, then at 740 DEG C
Lower insulation 40min；
B) being stretched into by ultrasonic amplitude transformer in the melt that step a) obtains and carry out batch (-type) supersound process, wherein, ultrasound intensity is
1.01kw/cm2～1.1kw/cm2, ultrasonic time is 35min, and the described each application time of batch (-type) supersound process is 28s,
The time of having a rest is 28s；
C) product obtained by step b) in 725 DEG C～730 DEG C of temperature ranges carries out refine remove impurity, sampling of then casting.
15. 1 kinds of electric machine casings for new-energy automobile, it is characterised in that described electric machine casing be at least partially by
Magnesium alloy according to any one of claim 1-12 is formed.
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Cited By (5)
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| CN106834771A (en) * | 2017-02-14 | 2017-06-13 | 山东银光钰源轻金属精密成型有限公司 | A kind of production technology of automotive magnesium alloy gear-box bracket |
| CN106916983A (en) * | 2017-02-14 | 2017-07-04 | 山东银光钰源轻金属精密成型有限公司 | A kind of preparation technology of sedan door magnesium alloy inner panel |
| CN108754359A (en) * | 2018-06-20 | 2018-11-06 | 陈国荣 | A kind of manufacturing method of motor in electric automobile shell |
| CN108754360A (en) * | 2018-06-20 | 2018-11-06 | 陈国荣 | A kind of particle reinforced aluminum alloy New energy automobile motor shell |
| CN114134379A (en) * | 2021-11-30 | 2022-03-04 | 东北电力大学 | AZ31M alloy and application thereof |
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| CN106834771A (en) * | 2017-02-14 | 2017-06-13 | 山东银光钰源轻金属精密成型有限公司 | A kind of production technology of automotive magnesium alloy gear-box bracket |
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| CN108754360A (en) * | 2018-06-20 | 2018-11-06 | 陈国荣 | A kind of particle reinforced aluminum alloy New energy automobile motor shell |
| CN114134379A (en) * | 2021-11-30 | 2022-03-04 | 东北电力大学 | AZ31M alloy and application thereof |
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