CN108642354A - A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions and preparation method thereof - Google Patents
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions and preparation method thereof Download PDFInfo
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- CN108642354A CN108642354A CN201810547251.XA CN201810547251A CN108642354A CN 108642354 A CN108642354 A CN 108642354A CN 201810547251 A CN201810547251 A CN 201810547251A CN 108642354 A CN108642354 A CN 108642354A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/057—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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Abstract
The invention discloses a kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions and preparation method thereof, wherein alloy matrix aluminum includes following components：Cu, Mn, Cr, Zr, B, Be, Mg, Zn, Si, Fe, Ti, Ni, V, La, Eu, Er, remaining is Al and inevitable impurity；The raw material of coating includes by weight：25~40 parts of TiC, 15~25 parts of NiO, 10~20 parts of TiO2.A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions and preparation method thereof proposed by the present invention, aluminium alloy extrusions have good mechanical property and excellent high temperature resistant and corrosion resistance, and service life is long, effectively improves automobile engine performance.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology more particularly to a kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy types
Material and preparation method thereof.
Background technology
In the keen competition of world's automobile market, each state all to high quality, high reliability, it is light-weight, energy saving, use
The directions such as long lifespan are developed, and lightweight is shown as in terms of material, and part iron part is replaced with aluminium alloy, to reach automobile to height
The demand for development of quality, low cost.Engine is the heart of automobile, and great influence is played to the performance of automobile, improves automobile hair
The material property of motivation has practical significance, and automobile engine alloy matrix aluminum is in high temperature resistant and corrosion resistance side at present
Face need to be improved.
Invention content
Technical problems based on background technology, the present invention propose a kind of automobile engine high-temperature-resistant and anti-corrosion aluminium
Alloy profile and preparation method thereof, aluminium alloy extrusions have good mechanical property and excellent high temperature resistant and corrosion resistance,
Its service life is long, effectively improves automobile engine performance.
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions proposed by the present invention, by alloy matrix aluminum and cladding
It is formed in the coating of aluminium alloy matrix surface, alloy matrix aluminum includes following components by mass fraction：Cu：2.5~3.5%, Mn：
0.32~0.56%, Cr：0.3~0.4%, Zr：0.12~0.22%, B：0.1~0.2%, Be：0.08~0.15%, Mg：
0.1~0.2%, Zn：0.1~0.2%, Si：0.25~0.4%, Fe：0.1~0.25%, Ti：0.12~0.28%, Ni：
0.08~0.15%, V：0.05~0.15%, La：0.08~0.14%, Eu：0.02~0.08%, Er：0.06~0.12%,
Remaining is Al and inevitable impurity.
Preferably, in alloy matrix aluminum, the mass fraction between Cu, Zr, La meets following relationship：1.55%≤0.5
×wCu+0.8×wZr+wLa≤ 1.90%, wherein wCu、wZr、wLaThe respectively mass fraction of Cu, Zr, La.
Preferably, in alloy matrix aluminum, the mass fraction between Cu, Mn, Cr meets following relationship：0.3%≤wCu+
wMn+wCr≤ 0.5%, wherein wCu、wMn、wCrThe respectively mass fraction of Cu, Mn, Cr.
Preferably, the raw material of coating includes by weight：25~40 parts of TiC, 15~25 parts of NiO, 10~20 parts of TiO2。
The invention also provides a kind of automobile engine preparation methods of high-temperature-resistant and anti-corrosion aluminium alloy extrusions, including with
Lower step：
S1, it will be melted in aluminium ingot addition smelting furnace, then remaining each raw material be added in smelting furnace and melt, detects each component
It is poured into a mould after content, through extrusion forming, obtains ingot casting；
S2, ingot casting is heat-treated, obtains alloy matrix aluminum；
S3, it is preheated after cleaning alloy matrix aluminum, obtains coating alloy matrix aluminum through plasma cladding, then thermally treated,
Obtain automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
Preferably, in S1, aluminium ingot is added in smelting furnace, 765~800 DEG C is warming up to and is allowed to melt, it then will be remaining each
Raw material is added in smelting furnace and melts, and is cooled to 560~575 DEG C after detecting each component content, cast through extrusion forming, is cast
Ingot.
Preferably, in S2, ingot casting is placed in 1.5~2.5h of heat preservation at 290~310 DEG C, then be warming up to 400~420 DEG C, protected
Then 3~3.5h of temperature is cooled to 180~200 DEG C, keep the temperature 0.5~1h, and water cooling to room temperature stands 2~3h, obtains aluminium alloy base
Body.
Preferably, in S3, it is preheated to 80~100 DEG C after alloy matrix aluminum is cleaned, coating aluminium is obtained through plasma cladding
Then coating alloy matrix aluminum is placed in 3.5~4h of heat preservation at 140~155 DEG C, then is warming up to 190~210 DEG C by alloy substrate,
0.5~1h is kept the temperature, room temperature is then air-cooled to, obtains automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
By rationally controlling each component content in aluminium alloy extrusions and optimizing preparation process in the present invention, obtained aluminium alloy
Proximate matter has good mechanical property and excellent high temperature resistant and corrosion resistance, and its service life is long, can effectively improve vapour
Car engine performance.Wherein, it is aluminium alloy of the present invention by the content of setting Cu, Mn, Cr three between 0.3%~0.5%
There are proximate matter the mechanical properties such as good tensile strength, hardness, toughness and splitting resistance to lay a good foundation；Again by control Cu,
The content of Zr, La in aluminium alloy extrusions, and the content for advanced optimizing Cu, Zr, La three makes its mass fraction meet
1.55%≤0.5 × wCu+0.8×wZr+wLa≤ 1.90%, Cu, Zr, La cooperation have synergistic effect, in aluminium alloy type of the present invention
The Al of Dispersed precipitate is generated in material2Cu、Al3Zr, AlCuLa hardening constituent are effectively improved inventive article institutional framework, refining alloy
Crystal grain inhibits recrystallization, effectively improves inventive article heat-resisting quantity and corrosion resistance, and further improve inventive article power
Learn performance；Again in alloy matrix aluminum preparation process, optimize heat treatment process, reasonable processing parameters are effectively improved this hair
The size and distribution that hardening constituent is precipitated in bright product, dendrite inhibition segregation, thinning microstructure structure further improve inventive article
Mechanical properties and the anticorrosive and heat-resisting quantity such as tensile strength, yield strength, hardness, toughness；In coating, optimize plasma
Melting and coating process, coating are stablized in aluminium alloy matrix surface performance, not easily to fall off and cracking, TiC, NiO, TiO2Good dispersion rises
To the effect of dispersion-strengtherning and refined crystalline strengthening, it is effectively improved inventive article surface structure, so that inventive article is had excellent
Corrosion resistance, wearability and heat-resisting quantity；It is heat-treated again after plasma cladding, each technological parameter is rationally set, plays and changes
Kind inventive article institutional framework, increases the compatibility and bond strength of coating and alloy matrix aluminum, and it is comprehensive to improve inventive article
Performance is closed, meanwhile, the more existing automobile engine aluminium alloy extrusions of inventive article service life improves at least 20%.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions proposed by the present invention, by alloy matrix aluminum and cladding
It is formed in the coating of aluminium alloy matrix surface, alloy matrix aluminum includes following components by mass fraction：Cu：2.5%, Mn：
0.32%, Cr：0.4%, Zr：0.12%, B：0.1%, Be：0.08%, Mg：0.2%, Zn：0.1%, Si：0.25%, Fe：
0.25%, Ti：0.12%, Ni：0.15%, V：0.05%, La：0.14%, Eu：0.08%, Er：0.06%, remaining for Al and
Inevitable impurity；The raw material of coating includes by weight：25 parts of TiC, 25 parts of NiO, 10 parts of TiO2。
The invention also provides a kind of automobile engine preparation methods of high-temperature-resistant and anti-corrosion aluminium alloy extrusions, including with
Lower step：
S1, it will be melted in aluminium ingot addition smelting furnace, then remaining each raw material be added in smelting furnace and melt, detects each component
It is poured into a mould after content, through extrusion forming, obtains ingot casting；
S2, ingot casting is heat-treated, obtains alloy matrix aluminum；
S3, it is preheated after cleaning alloy matrix aluminum, obtains coating alloy matrix aluminum through plasma cladding, then thermally treated,
Obtain automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
Embodiment 2
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions proposed by the present invention, by alloy matrix aluminum and cladding
It is formed in the coating of aluminium alloy matrix surface, alloy matrix aluminum includes following components by mass fraction：Cu：3.5%, Mn：
0.56%, Cr：0.3%, Zr：0.22%, B：0.2%, Be：0.15%, Mg：0.1%, Zn：0.2%, Si：0.4%, Fe：
0.1%, Ti：0.28%, Ni：0.08%, V：0.15%, La：0.08%, Eu：0.02%, Er：0.12%, remaining is for Al and not
Evitable impurity；The raw material of coating includes by weight：40 parts of TiC, 15 parts of NiO, 20 parts of TiO2。
The invention also provides a kind of automobile engine preparation methods of high-temperature-resistant and anti-corrosion aluminium alloy extrusions, including with
Lower step：
S1, aluminium ingot is added in smelting furnace, is warming up to 765 DEG C and is allowed to melt, smelting furnace then is added in remaining each raw material
Middle melting is cooled to 560 DEG C after detecting each component content, and cast through extrusion forming, obtains ingot casting；
S2, it ingot casting is placed at 290 DEG C keeps the temperature 2.5h, then be warming up to 400 DEG C, keep the temperature 3.5h, be then cooled to 200 DEG C,
0.5h is kept the temperature, water cooling to room temperature stands 3h, obtains alloy matrix aluminum；
S3, it is preheated to 100 DEG C after cleaning alloy matrix aluminum, obtains coating alloy matrix aluminum through plasma cladding, then
Coating alloy matrix aluminum is placed at 140 DEG C and keeps the temperature 4h, then is warming up to 210 DEG C, 0.5h is kept the temperature, is then air-cooled to room temperature, obtains
Automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
Embodiment 3
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions proposed by the present invention, by alloy matrix aluminum and cladding
It is formed in the coating of aluminium alloy matrix surface, alloy matrix aluminum includes following components by mass fraction：Cu：3.2%, Mn：
0.45%, Cr：0.34%, Zr：0.18%, B：0.15%, Be：0.12%, Mg：0.15%, Zn：0.15%, Si：0.32%,
Fe：0.18%, Ti：0.2%, Ni：0.1%, V：0.1%, La：0.12%, Eu：0.05%, Er：0.09%, remaining for Al and
Inevitable impurity；The raw material of coating includes by weight：32 parts of TiC, 18 parts of NiO, 15 parts of TiO2。
The invention also provides a kind of automobile engine preparation methods of high-temperature-resistant and anti-corrosion aluminium alloy extrusions, including with
Lower step：
S1, aluminium ingot is added in smelting furnace, is warming up to 785 DEG C and is allowed to melt, smelting furnace then is added in remaining each raw material
Middle melting is cooled to 570 DEG C after detecting each component content, and cast through extrusion forming, obtains ingot casting；
S2, it ingot casting is placed at 300 DEG C keeps the temperature 2h, then be warming up to 410 DEG C, keep the temperature 3.2h, be then cooled to 190 DEG C, protect
Warm 0.8h, water cooling to room temperature stand 2.5h, obtain alloy matrix aluminum；
S3, it is preheated to 90 DEG C after cleaning alloy matrix aluminum, coating alloy matrix aluminum is obtained through plasma cladding, then will
Coating alloy matrix aluminum, which is placed at 150 DEG C, keeps the temperature 3.8h, then is warming up to 200 DEG C, keeps the temperature 0.6h, is then air-cooled to room temperature, obtains
Automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
Embodiment 4
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions proposed by the present invention, by alloy matrix aluminum and cladding
It is formed in the coating of aluminium alloy matrix surface, alloy matrix aluminum includes following components by mass fraction：Cu：2.8%, Mn：
0.4%, Cr：0.32%, Zr：0.14%, B：0.12%, Be：0.14%, Mg：0.12%, Zn：0.12%, Si：0.36%,
Fe：0.22%, Ti：0.25%, Ni：0.12%, V：0.12%, La：0.12%, Eu：0.5%, Er：0.1%, remaining for Al and
Inevitable impurity；The raw material of coating includes by weight：30 parts of TiC, 18 parts of NiO, 12 parts of TiO2。
The invention also provides a kind of automobile engine preparation methods of high-temperature-resistant and anti-corrosion aluminium alloy extrusions, including with
Lower step：
S1, aluminium ingot is added in smelting furnace, is warming up to 800 DEG C and is allowed to melt, smelting furnace then is added in remaining each raw material
Middle melting is cooled to 575 DEG C after detecting each component content, and cast through extrusion forming, obtains ingot casting；
S2, it ingot casting is placed at 310 DEG C keeps the temperature 1.5h, then be warming up to 420 DEG C, keep the temperature 3h, be then cooled to 180 DEG C, protect
Warm 1h, water cooling to room temperature stand 2h, obtain alloy matrix aluminum；
S3, it is preheated to 80 DEG C after cleaning alloy matrix aluminum, coating alloy matrix aluminum is obtained through plasma cladding, then will
Coating alloy matrix aluminum, which is placed at 155 DEG C, keeps the temperature 3.5h, then is warming up to 190 DEG C, keeps the temperature 1h, is then air-cooled to room temperature, obtains vapour
Car engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
Embodiment 5
A kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions proposed by the present invention, by alloy matrix aluminum and cladding
It is formed in the coating of aluminium alloy matrix surface, alloy matrix aluminum includes following components by mass fraction：Cu：3.2%, Mn：
0.5%, Cr：0.38%, Zr：0.2%, B：0.18%, Be：0.1%, Mg：0.18%, Zn：0.18%, Si：0.3%, Fe：
0.15%, Ti：0.16%, Ni：0.1%, V：0.08%, La：0.1%, Eu：0.04%, Er：0.07%, remaining is for Al and not
Evitable impurity；The raw material of coating includes by weight：35 parts of TiC, 22 parts of NiO, 16 parts of TiO2。
The invention also provides a kind of automobile engine preparation methods of high-temperature-resistant and anti-corrosion aluminium alloy extrusions, including with
Lower step：
S1, aluminium ingot is added in smelting furnace, is warming up to 790 DEG C and is allowed to melt, smelting furnace then is added in remaining each raw material
Middle melting is cooled to 570 DEG C after detecting each component content, and cast through extrusion forming, obtains ingot casting；
S2, it ingot casting is placed at 295 DEG C keeps the temperature 2.2h, then be warming up to 405 DEG C, keep the temperature 3.2h, be then cooled to 195 DEG C,
0.6h is kept the temperature, water cooling to room temperature stands 2.5h, obtains alloy matrix aluminum；
S3, it is preheated to 85 DEG C after cleaning alloy matrix aluminum, coating alloy matrix aluminum is obtained through plasma cladding, then will
Coating alloy matrix aluminum, which is placed at 145 DEG C, keeps the temperature 3.6h, then is warming up to 205 DEG C, keeps the temperature 0.6h, is then air-cooled to room temperature, obtains
Automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions, which is characterized in that by alloy matrix aluminum and be coated on
The coating of aluminium alloy matrix surface forms, and alloy matrix aluminum includes following components by mass fraction：Cu：2.5~3.5%, Mn：
0.32~0.56%, Cr：0.3~0.4%, Zr：0.12~0.22%, B：0.1~0.2%, Be：0.08~0.15%, Mg：
0.1~0.2%, Zn：0.1~0.2%, Si：0.25~0.4%, Fe：0.1~0.25%, Ti：0.12~0.28%, Ni：
0.08~0.15%, V：0.05~0.15%, La：0.08~0.14%, Eu：0.02~0.08%, Er：0.06~0.12%,
Remaining is Al and inevitable impurity.
2. automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions according to claim 1, which is characterized in that aluminium alloy base
In body, the mass fraction between Cu, Zr, La meets following relationship：1.55%≤0.5 × wCu+0.8×wZr+wLa≤
1.90%, wherein wCu、wZr、wLaThe respectively mass fraction of Cu, Zr, La.
3. automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions according to claim 1, which is characterized in that aluminium alloy base
In body, the mass fraction between Cu, Mn, Cr meets following relationship：0.3%≤wCu+wMn+wCr≤ 0.5%, wherein wCu、
wMn、wCrThe respectively mass fraction of Cu, Mn, Cr.
4. automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions according to claim 1, which is characterized in that the original of coating
Material include by weight：25~40 parts of TiC, 15~25 parts of NiO, 10~20 parts of TiO2。
5. a kind of preparation side of the automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions as described in any one of claim 1-4
Method, which is characterized in that include the following steps：
S1, it will be melted in aluminium ingot addition smelting furnace, then remaining each raw material be added in smelting furnace and melt, detects each component content
After pour into a mould, through extrusion forming, obtain ingot casting；
S2, ingot casting is heat-treated, obtains alloy matrix aluminum；
S3, it is preheated after cleaning alloy matrix aluminum, obtains coating alloy matrix aluminum through plasma cladding, then thermally treated, obtain
Automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
6. the preparation method of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions, feature exist according to claim 5
In in S1, aluminium ingot being added in smelting furnace, 765~800 DEG C is warming up to and is allowed to melt, melting then is added in remaining each raw material
It is melted in stove, is cooled to 560~575 DEG C after detecting each component content, cast through extrusion forming, obtains ingot casting.
7. the preparation method of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions, feature exist according to claim 5
In, in S2, ingot casting is placed in 1.5~2.5h of heat preservation at 290~310 DEG C, then be warming up to 400~420 DEG C, 3~3.5h of heat preservation, so
After be cooled to 180~200 DEG C, keep the temperature 0.5~1h, water cooling to room temperature stands 2~3h, obtains alloy matrix aluminum.
8. the preparation method of automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions, feature exist according to claim 5
In in S3,80~100 DEG C are preheated to after alloy matrix aluminum is cleaned, obtains coating alloy matrix aluminum through plasma cladding, then
Coating alloy matrix aluminum is placed in 3.5~4h of heat preservation at 140~155 DEG C, then is warming up to 190~210 DEG C, keeps the temperature 0.5~1h, so
After be air-cooled to room temperature, obtain automobile engine high-temperature-resistant and anti-corrosion aluminium alloy extrusions.
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| CN109652680A (en) * | 2018-12-29 | 2019-04-19 | 安徽鑫铂铝业股份有限公司 | A kind of high-performance large-scale vehicle aluminum profile |
| CN110527870A (en) * | 2019-09-18 | 2019-12-03 | 江苏集萃精凯高端装备技术有限公司 | A kind of high thermal conductivity cast aluminium alloy gold and preparation method thereof containing Mn-Fe-Cu |
| CN112481530A (en) * | 2020-11-09 | 2021-03-12 | 辽宁忠旺集团有限公司 | 2-series aluminum profile production process |
| CN113584362A (en) * | 2021-07-29 | 2021-11-02 | 山东创新金属科技有限公司 | High-temperature-resistant corrosion-resistant aluminum alloy for automobile engine and preparation method thereof |
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