CN107723628A - A kind of automobile drive electric motor shell - Google Patents
A kind of automobile drive electric motor shell Download PDFInfo
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- CN107723628A CN107723628A CN201710772501.5A CN201710772501A CN107723628A CN 107723628 A CN107723628 A CN 107723628A CN 201710772501 A CN201710772501 A CN 201710772501A CN 107723628 A CN107723628 A CN 107723628A
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- electric motor
- motor shell
- drive electric
- automobile drive
- carbon fiber
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
- C22C49/06—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/04—Pretreatment of the fibres or filaments by coating, e.g. with a protective or activated covering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The present invention relates to a kind of shell, and in particular to a kind of automobile drive electric motor shell, belongs to mechanical material field.Automobile drive electric motor shell of the present invention is made of aluminum alloy materials, and the aluminum alloy materials are made up of the composition of following mass percent：Mg：2.5 3.2%, Si：1.5 2.0%, Mn：0.5 0.8%, Cu：0.5 1.5%, Zr：0.2 0.5%, carbon fiber：2 2.5%, surplus is Al and inevitable impurity element.Automobile drive electric motor shell of the present invention is prepared using aluminum alloy materials, and the reasonable compatibility constituent and its mass percent of aluminium alloy, handled by solution treatment and artificial aging, specific silanization treatment is also used, the automobile drive electric motor shell enabled to has high intensity and decay resistance.
Description
Invention field
The present invention relates to a kind of shell, and in particular to a kind of automobile drive electric motor shell, belongs to mechanical material field.
Background technology
With the development of new-energy automobile, electric automobile either with motor-driven hybrid electric vehicle increasingly by
Consumer is received.For motor used in electric automobile, because motor is generally located in the front deck of automobile, automobile front chamber
Environment also more close, motor can produce many heats under energization running status, work(of the motor housing as protection motor
Energy property object, can protect motor not damaged by surrounding environment, therefore propose certain requirement to its intensity.But on existing market
Due to factors such as own materials, intensity tends not to meet consumer demand automobile drive electric motor shell, therefore in the application also
There is larger limitation.
The content of the invention
The present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of intensity is high, the automobile of service life length drives
Dynamic motor housing.
The above-mentioned purpose of the present invention can be realized by following technical proposal：A kind of automobile drive electric motor shell, the automobile
Motor shell is made of aluminum alloy materials, and the aluminum alloy materials are made up of the composition of following mass percent：Mg：
2.5-3.2%, Si：1.5-2.0%, Mn：0.5-0.8%, Cu：0.5-1.5%, Zr：0.2-0.5%, carbon fiber：2-2.5%,
Surplus is Al and inevitable impurity element.
In automobile drive electric motor shell of the present invention, by using the carbon fiber of high intensity, high-modulus, low-density as increasing
Qiang Ti, compound with alloy matrix aluminum, wherein carbon fiber is carrying component, and metallic matrix transmits load effect.Due to high-performance
The addition of carbon fiber so that composite density declines and has high intensity, specific stiffness and good wearability.
Preferably, the carbon fiber is to comprise the following steps by the carbon fiber of pretreatment, the pretreatment：Carbon is fine
Dimension carries out high-energy ball milling with the SiC particulate that quality is carbon fiber quality 10-15%, adds after slurry is made in absolute ethyl alcohol and is coated on
Carbon fiber surface, 1-2h is protected in 1200-1300 DEG C of argon gas.
In automobile drive electric motor shell of the present invention, carbon fiber is pre-processed, being capable of in-situ preparation β-SiC nanometers
Line, the nano wire of synthesis have " core-shell " structure, and center portion is the SiC containing a large amount of faults and growth twin, causes surface to present
Go out zigzag, outer wrap there are several nano thickness SiOx amorphous layers, and a small amount of nano wire has the pattern of Bamboo-shaped and chain pearl.
Fracture of composite materials front curve curve is gentle after adding pretreated carbon fiber, and matrix strength can greatly improve, obtained aluminium
The intensity of alloy increases.
The main alloy element of aluminium alloy of the present invention is Mg and Si, forms Mg2Si phases, enable aluminum alloy to have preferably processing
Performance, good corrosion resistance, toughness are high, indeformable, the fine and close zero defect of material after processing, be easily polished, film of paint is easy, oxygen
Change the good characteristics such as excellent.
In the aluminum alloy materials of automobile drive electric motor shell of the present invention, the addition of Cu elements and Mn elements can enable aluminum alloy to
Reaching the time of aging peak reduces, while the increase of alloy hardening effect, decay resistance enhancing；The addition of Zr elements can refine conjunction
The as-cast structure of gold, alloy mechanical property is improved, but the content of Zr elements is excessive, easily generates Al3Zr particles, closed so as to reduce
Golden mechanical property, the present invention use the Zr of above-mentioned content, the intensity of aluminum alloy enabled to and the enhancing of follow-up weld strength,
And both tissues are refined.
It is another object of the present invention to provide a kind of method for preparing above-mentioned automobile drive electric motor shell, the preparation
Method comprises the following steps：By the constituent for preparing automobile drive electric motor shell aluminium alloy and its mass percent dispensing, melt
Refining, be smelted into after aluminium liquid skimmed, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains automobile
Motor shell casting；Automobile drive electric motor shell casting is heat-treated, Automobile drive electricity is obtained after silanization treatment
Machine shell finished product.
In a kind of above-mentioned preparation method of automobile drive electric motor shell, the heat treatment comprises the following steps：At solid solution
Reason：560-580 DEG C of temperature, time 1-2h；Artificial aging processing：180-200 DEG C of temperature, time 8-9h.The present invention is using above-mentioned
Technology for Heating Processing, wherein solution treatment are primarily to be to obtain the supersaturated solid solution of high concentration.Performance after solution treatment
Change, different-alloy relevant with the series of factors such as phase constituent, alloy original structure and as-quenched tissue signature, quenching condition
Performance change differs widely；It can be eliminated after artificial aging is handled or reduce microstress, the machinery after quenching in workpiece
Forming residual stress, prevent from deforming and ftracture.
In a kind of above-mentioned preparation method of automobile drive electric motor shell, the silanization treatment comprises the following steps：Will
Automobile drive electric motor shell casting, which is positioned in silane treatment liquid, soaks 30-40s, and hot setting obtains silanization film.Wherein, solidify
Time is 25-30min, and solidification temperature is 140-150 DEG C.The present invention passes through silanization treatment so that obtained Automobile drive electricity
Machine shell has severe corrosive.Wherein, when solidification temperature is low, silane film corrosion electric current density is big, and corrosion resisting property is poor.Temperature is low,
Silicone hydroxyl and metal hydroxy crosslinking are insufficient, and the hydrogen bond of residual can absorb moisture, influence coupling effect, cause corrosion resistance to decline.
And solidification temperature is too high can cause crosslinking aggravation in silane molecule, the reactivity of film is reduced.Temperature is higher, the balance of silicone hydroxyl
Concentration is lower, and lower with the caking property of base material, corrosion resisting property is poorer.The present invention uses said temperature, can make obtained silane film
With excellent corrosion resisting property, and then lift the decay resistance of Automobile drive shell.
Prepared preferably, the silane treatment liquid is silane coupler KH560 after hydrolysis, the pH of silane treatment liquid is
4-4.2, concentration 5-7%.The KH560 is to comprise the following steps by the KH560 of pretreatment, pretreatment：By silane treatment
Liquid, the gallic acid that quality is silane treatment liquid quality 5-10% and catalyst triphenylphosphine are heated to 70-80 DEG C of reaction 5-
6h.Wherein, the quality of catalyst is the 0.5-1% of KH560 mass.The present invention on coupling agent KH560 strands by being grafted
Gallic acid, gallic acid-KH560 is prepared using the activity and the carboxyl reaction in gallic acid of epoxy, introduces polyphenol hydroxyl
Carboxylic acid gallic acid, phenolic hydroxyl group can be not only complexed with aluminum alloy surface, and crosslinking interpenetrating networks can also be formed with coupling agent, are carried
The adhesion of high-aluminium alloy base material and silanization film, extend the salt fog of the resistance to acetic acid time of aluminum alloy materials.
Compared with prior art, the invention has the advantages that：
1st, automobile drive electric motor shell of the present invention is prepared using aluminum alloy materials, and the reasonable compatibility group of aluminium alloy
Into composition and its mass percent, the motor cabinet that can make to obtain has light weight, intensity high, corrosion-resistant and other effects.
2nd, automobile drive electric motor shell of the present invention adds the carbon fiber pre-processed through SiC particulate in aluminum alloy materials,
Fracture of composite materials front curve curve is gentle after adding carbon fiber, and matrix strength can greatly improve, the intensity of obtained aluminium alloy
Increase.
3rd, handled in automobile engine case preparation process of the present invention by solution treatment and artificial aging, also using specific
Silanization treatment, the aluminum alloy materials enabled to have decay resistance.
Embodiment
It is the embodiment of the present invention below, technical scheme is further described, but the present invention
It is not limited to these embodiments.
Embodiment 1
Constituent and its mass percent dispensing, the melting of automobile drive electric motor shell aluminium alloy will be prepared, be smelted into
Skimmed after aluminium liquid, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains automobile drive electric motor
Shell casting；Automobile drive electric motor shell casting is heat-treated, obtained after silanization treatment automobile drive electric motor shell into
Product；Wherein, aluminum alloy materials are made up of the composition of following mass percent：Mg：2.5%, Si：1.5%, Mn：0.5%, Cu：
0.5%, Zr：0.2%, carbon fiber：2%, surplus is Al and inevitable impurity element, and carbon fiber is by pretreatment
Carbon fiber, the pretreatment comprise the following steps：Carbon fiber and quality are subjected to high energy for the SiC particulate of carbon fiber quality 10%
Ball milling, is added after slurry is made in absolute ethyl alcohol and is coated on carbon fiber surface, and 1h is protected in 1200 DEG C of argon gas；Heat treatment includes as follows
Step：Solution treatment：Temperature is 560 DEG C, time 1h；Artificial aging processing：Temperature is 180 DEG C, time 8h；At silanization
Reason comprises the following steps：Automobile drive electric motor shell casting is positioned in silane treatment liquid and soaks 30s, hot setting obtains silane
Change film, hardening time 25min, solidification temperature is 140 DEG C；Silane treatment liquid is that silane coupler KH560 is prepared after hydrolysis,
The pH of silane treatment liquid is 4, concentration 5%；KH560 is to comprise the following steps by the KH560 of pretreatment, the pretreatment：
KH560, quality are heated to 70 DEG C of reaction 5h for the gallic acid and catalyst triphenylphosphine of KH560 mass 5%.
Embodiment 2
Constituent and its mass percent dispensing, the melting of automobile drive electric motor shell aluminium alloy will be prepared, be smelted into
Skimmed after aluminium liquid, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains automobile drive electric motor
Shell casting；Automobile drive electric motor shell casting is heat-treated, obtained after silanization treatment automobile drive electric motor shell into
Product；Wherein, aluminum alloy materials are made up of the composition of following mass percent：Mg：2.8%, Si：1.6%, Mn：0.55%, Cu：
0.75%, Zr：0.25%, carbon fiber：2.1%, surplus is Al and inevitable impurity element, and carbon fiber is by pre- place
The carbon fiber of reason, the pretreatment comprise the following steps：Carbon fiber is entered with quality for the SiC particulate of carbon fiber quality 11.5%
Row high-energy ball milling, is added after slurry is made in absolute ethyl alcohol and is coated on carbon fiber surface, and 1.3h is protected in 1225 DEG C of argon gas；Heat treatment
Comprise the following steps：Solution treatment：Temperature is 565 DEG C, time 1.2h；Artificial aging processing：Temperature is 185 DEG C, and the time is
8.2h；Silanization treatment comprises the following steps：Automobile drive electric motor shell casting is positioned in silane treatment liquid and soaks 32s,
Hot setting obtains silanization film, hardening time 26min, and solidification temperature is 143 DEG C；Silane treatment liquid is silane coupler
KH560 is prepared after hydrolysis, and the pH of silane treatment liquid is 4.1, concentration 5.5%；KH560 is by the KH560 of pretreatment, institute
Pretreatment is stated to comprise the following steps：KH560, quality are added for the gallic acid and catalyst triphenylphosphine of KH560 mass 6%
Heat reacts 5.2h to 73 DEG C.
Embodiment 3
Constituent and its mass percent dispensing, the melting of automobile drive electric motor shell aluminium alloy will be prepared, be smelted into
Skimmed after aluminium liquid, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains automobile drive electric motor
Shell casting；Automobile drive electric motor shell casting is heat-treated, obtained after silanization treatment automobile drive electric motor shell into
Product；Wherein, aluminum alloy materials are made up of the composition of following mass percent：Mg：2.9%, Si：1.75%, Mn：0.65%, Cu：
1%, Zr：0.35%, carbon fiber：2.2%, surplus is Al and inevitable impurity element, and carbon fiber is by pre-processing
Carbon fiber, the pretreatment comprises the following steps：Carbon fiber and quality are carried out for the SiC particulate of carbon fiber quality 12.5%
High-energy ball milling, is added after slurry is made in absolute ethyl alcohol and is coated on carbon fiber surface, and 1.5h is protected in 1250 DEG C of argon gas；Heat treatment bag
Include following steps：Solution treatment：Temperature is 570 DEG C, time 1.5h；Artificial aging processing：Temperature is 190 DEG C, and the time is
8.5h；Silanization treatment comprises the following steps：Automobile drive electric motor shell casting is positioned in silane treatment liquid and soaks 35s,
Hot setting obtains silanization film, hardening time 27min, and solidification temperature is 145 DEG C；Silane treatment liquid is silane coupler
KH560 is prepared after hydrolysis, and the pH of silane treatment liquid is 4.1, concentration 6%；KH560 is the KH560 by pre-processing, described
Pretreatment comprises the following steps：KH560, quality are added for the gallic acid and catalyst triphenylphosphine of KH560 mass 7.5%
Heat reacts 5.5h to 75 DEG C.
Embodiment 4
Constituent and its mass percent dispensing, the melting of automobile drive electric motor shell aluminium alloy will be prepared, be smelted into
Skimmed after aluminium liquid, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains automobile drive electric motor
Shell casting；Automobile drive electric motor shell casting is heat-treated, obtained after silanization treatment automobile drive electric motor shell into
Product；Wherein, aluminum alloy materials are made up of the composition of following mass percent：Mg：3.1%, Si：1.85%, Mn：0.7%, Cu：
1.3%, Zr：0.4%, carbon fiber：2.4%, surplus is Al and inevitable impurity element, and carbon fiber is without pre- place
The carbon fiber of reason, the pretreatment comprise the following steps：Carbon fiber and quality are carried out for the SiC particulate of carbon fiber quality 14%
High-energy ball milling, is added after slurry is made in absolute ethyl alcohol and is coated on carbon fiber surface, and 1.7h is protected in 1280 DEG C of argon gas；Heat treatment bag
Include following steps：Solution treatment：Temperature is 575 DEG C, time 1.8h；Artificial aging processing：Temperature is 195 DEG C, and the time is
8.8h；Silanization treatment comprises the following steps：Automobile drive electric motor shell casting is positioned in silane treatment liquid and soaks 38s,
Hot setting obtains silanization film, hardening time 28min, and solidification temperature is 148 DEG C；Silane treatment liquid is silane coupler
KH560 is prepared after hydrolysis, and the pH of silane treatment liquid is 4.1, concentration 6.5%；KH560 is by the KH560 of pretreatment, institute
Pretreatment is stated to comprise the following steps：By KH560, the gallic acid and catalyst triphenylphosphine that quality is KH560 mass 8.5%
It is heated to 78 DEG C of reaction 5.8h.
Embodiment 5
Constituent and its mass percent dispensing, the melting of automobile drive electric motor shell aluminium alloy will be prepared, be smelted into
Skimmed after aluminium liquid, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains automobile drive electric motor
Shell casting；Automobile drive electric motor shell casting is heat-treated, obtained after silanization treatment automobile drive electric motor shell into
Product；Wherein, aluminum alloy materials are made up of the composition of following mass percent：Mg：3.2%, Si：2.0%, Mn：0.8%, Cu：
1.5%, Zr：0.5%, carbon fiber：2.5%, surplus is Al and inevitable impurity element, and carbon fiber is by pre-processing
Carbon fiber, the pretreatment comprises the following steps：Carbon fiber and quality are subjected to height for the SiC particulate of carbon fiber quality 15%
Energy ball milling, is added after slurry is made in absolute ethyl alcohol and is coated on carbon fiber surface, and 2h are protected in 1300 DEG C of argon gas；Heat treatment is included such as
Lower step：Solution treatment：Temperature is 580 DEG C, time 2h；Artificial aging processing：Temperature is 200 DEG C, time 9h；Silanization
Processing comprises the following steps：Automobile drive electric motor shell casting is positioned in silane treatment liquid and soaks 40s, hot setting obtains silicon
Alkanisation film, hardening time 30min, solidification temperature are 150 DEG C；Silane treatment liquid is that silane coupler KH560 matches somebody with somebody after hydrolysis
System, the pH of silane treatment liquid is 4.2, concentration 7%；KH560 is to include as follows by the KH560 of pretreatment, the pretreatment
Step：KH560, quality are heated to 80 DEG C of reaction 6h for the gallic acid and catalyst triphenylphosphine of KH560 mass 10%.
Comparative example 1
With differing only in for embodiment 1, the aluminum alloy materials of the comparative example automobile drive electric motor shell use conventional aluminium
Alloy material, other are same as Example 1, and here is omitted.
Comparative example 2
With differing only in for embodiment 1, do not add in the aluminum alloy materials of the comparative example automobile drive electric motor shell
Carbon fiber, other are same as Example 1, and here is omitted.
Comparative example 3
With differing only in for embodiment 1, silanization is not used in the comparative example automobile drive electric motor shell preparation process
Processing, other are same as Example 1, and here is omitted.
Comparative example 4
With differing only in for embodiment 1, common silane is used in the comparative example automobile drive electric motor shell preparation process
Change is handled, and other are same as Example 1, and here is omitted.
Comparative example 5
With differing only in for embodiment 1, KH560 does not pass through in the comparative example automobile drive electric motor shell preparation process
Pretreatment, other are same as Example 1, and here is omitted.
Performance test, test result such as table are carried out to automobile drive electric motor shell in above-described embodiment 1-5 and comparative example 1-5
Shown in 1.
Table 1：Automobile drive electric motor shell the performance test results in embodiment 1-5 and comparative example 1-5
Automobile drive electric motor shell of the present invention is prepared using aluminum alloy materials it can be seen from the above results, and is closed
The compatibility constituent and its mass percent of aluminium alloy is managed, is handled by solution treatment and artificial aging, also using specific
Silanization treatment, the automobile drive electric motor shell enabled to has high intensity and decay resistance.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but simultaneously
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (9)
- A kind of 1. automobile drive electric motor shell, it is characterised in that the automobile drive electric motor shell is made of aluminum alloy materials, The aluminum alloy materials are made up of the composition of following mass percent：Mg：2.5-3.2%, Si：1.5-2.0%, Mn：0.5- 0.8%, Cu：0.5-1.5%, Zr：0.2-0.5%, carbon fiber：2-2.5%, surplus is Al and inevitable impurity member Element.
- 2. a kind of automobile drive electric motor shell according to claim 1, it is characterised in that the carbon fiber is by pre- place The carbon fiber of reason, the pretreatment comprise the following steps：SiC particulate by carbon fiber with quality for carbon fiber quality 10-15% High-energy ball milling is carried out, adds after slurry is made in absolute ethyl alcohol and is coated on carbon fiber surface, 1- is protected in 1200-1300 DEG C of argon gas 2h。
- A kind of 3. preparation method of automobile drive electric motor shell as claimed in claim 1, it is characterised in that the preparation method Comprise the following steps：Constituent and its mass percent dispensing, the melting of automobile drive electric motor shell aluminium alloy will be prepared, melted Be smelt after aluminium liquid skimmed, refinery by de-gassing, removed the gred after standing；Aluminium liquid after slagging-off is poured into a mould, obtains Automobile drive Motor housing casting；Automobile drive electric motor shell casting is heat-treated, obtained after silanization treatment outside automobile drive electric motor Shell finished product.
- A kind of 4. preparation method of automobile drive electric motor shell according to claim 3, it is characterised in that the heat treatment Handled including solution treatment and artificial aging.
- 5. the preparation method of a kind of automobile drive electric motor shell according to claim 3, it is characterised in that at the solid solution The temperature of reason is 560-580 DEG C, time 1-2h；The temperature of the artificial aging processing is 180-200 DEG C, time 8-9h.
- A kind of 6. preparation method of automobile drive electric motor shell according to claim 3, it is characterised in that the silanization Processing comprises the following steps：Automobile drive electric motor shell casting is positioned in silane treatment liquid and soaks 30-40s, hot setting Obtain silanization film.
- 7. the preparation method of a kind of automobile drive electric motor shell according to claim 6, it is characterised in that the high temperature is consolidated In change, hardening time 25-30min, solidification temperature is 140-150 DEG C.
- 8. the preparation method of a kind of automobile drive electric motor shell according to claim 6, it is characterised in that at the silane Reason liquid is that silane coupler KH560 is prepared after hydrolysis, and the pH of silane treatment liquid is 4-4.2, concentration 5-7%.
- A kind of 9. preparation method of automobile drive electric motor shell according to claim 8, it is characterised in that the KH560 For the KH560 by pretreatment, the pretreatment comprises the following steps：It is not having for KH560 mass 5-10% by KH560, quality Gallate-based and catalyst triphenylphosphine are heated to 70-80 DEG C of reaction 5-6h.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588592A (en) * | 2018-04-19 | 2018-09-28 | 宁波摩尔克斯灯杆技术有限公司 | A kind of high-intensity aluminium garden lamp stand pedestal and its processing method |
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