CN111674491A - Aluminum shell for vehicle - Google Patents
Aluminum shell for vehicle Download PDFInfo
- Publication number
- CN111674491A CN111674491A CN202010399898.XA CN202010399898A CN111674491A CN 111674491 A CN111674491 A CN 111674491A CN 202010399898 A CN202010399898 A CN 202010399898A CN 111674491 A CN111674491 A CN 111674491A
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- China
- Prior art keywords
- aluminum
- shell
- vehicle
- automobile
- alloy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D63/00—Motor vehicles or trailers not otherwise provided for
- B62D63/02—Motor vehicles
- B62D63/04—Component parts or accessories
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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
- C22C1/026—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
- 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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- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/54—Electroplating: Baths therefor from solutions of metals not provided for in groups C25D3/04 - C25D3/50
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention belongs to the field of vehicle machinery, and particularly relates to a vehicle aluminum shell and a preparation method thereof. The aluminum shell for the vehicle is prepared from aluminum alloy, wherein the aluminum alloy comprises, by weight, 18-21% of Si, 0.11-0.14% of Fe0.11, 0.005-0.007% of Cu0.005-0.007% of Mg0.03-0.05% of Mn0.002-0.004%, 0.005-0.007% of Zn0.02-0.04% of Ti0.02-0.04% of Cr0.05-0.07% of the balance Al, the preparation method comprises the steps of weighing and smelting according to the proportion, standing for 10-20 min after all raw materials are melted, adding Al-P alloy, cooling to 740-750 ℃, preserving heat for 30-40 min, finally casting and molding, and machining to obtain the aluminum shell for the vehicle. The prepared aluminum alloy shell has good wear resistance and corrosion resistance, and the service life of the whole automobile shell is prolonged.
Description
Technical Field
The invention belongs to the field of vehicle machinery, and particularly relates to a vehicle aluminum shell and a preparation method thereof.
Background
The aluminum alloy has low density, high strength, good plasticity, excellent conductivity, heat conductivity and corrosion resistance. Aluminum alloys are the most widely used non-ferrous structural materials in industry and are used in a large number of applications in the aerospace, automotive, mechanical manufacturing, marine, aluminum alloy and chemical industries. Pure aluminum has a low density of about 1/3 that is iron, a low melting point of 660 ℃, and a face-centered cubic structure, so that the pure aluminum has high plasticity and is easy to process, various sections and plates can be manufactured, the aluminum alloy has good corrosion resistance, but the pure aluminum has low strength and is not suitable for being used as a structural material, and through long-term production practices and scientific experiments, people gradually add alloy elements and apply a heat treatment method to strengthen aluminum to obtain various aluminum alloys with different properties. The alloy formed by adding certain elements can have higher strength while keeping the advantages of light weight of pure aluminum and the like, so that the specific strength is superior to that of a plurality of alloy steels, the alloy becomes an ideal structural material and is widely applied to the aspects of mechanical manufacturing, transportation machinery, power machinery, aviation industry and the like, the airframe, the skin, the air compressor and the like of an airplane are usually made of the aluminum alloy to reduce the dead weight, the aluminum alloy is adopted to replace the welding of a steel plate material, and the structural weight can be reduced by more than 50%.
The aluminum case for a vehicle is a case of a vehicle body and is required to be wear-resistant and corrosion-resistant, and therefore, the surface requirement for the problem is high.
Disclosure of Invention
In order to solve the above problems, the present invention provides an aluminum case for a vehicle and a method for manufacturing the same.
The scheme provided by the invention is as follows:
the aluminum shell for the vehicle is prepared from aluminum alloy, wherein the aluminum alloy comprises, by weight, 18-21% of Si, 0.11-0.14% of Fe0.005-0.007% of Cu0.005-0.007% of Mg0.03-0.05% of Mn0.002-0.004%, 0.005-0.007% of Zn0.02-0.04% of Ti0.05-0.07% of Cr0.05-0.07% of Al, and the balance of Al.
A vehicle aluminum shell is prepared by the steps of adding Al, Fe, Cu, Mg, Zn, Ti, Cr, Al-Si and Al-Mn alloys weighed in proportion into a smelting device for smelting, standing for 10-20 min after all raw materials are melted, adding the Al-P alloy, cooling to 740-750 ℃, preserving heat for 30-40 min, casting and molding molten liquid, and machining into the vehicle aluminum shell.
Further, the smelting temperature is 770-790 ℃.
Further, after the machining of the automobile aluminum shell is completed, surface treatment is carried out.
Further, the surface treatment step is as follows:
(1) cleaning the surface of the casting body by using acetone and water in sequence;
(2) polishing the surface by using 300-mesh and 1000-mesh abrasive paper respectively, and then cleaning by using distilled water;
(3) and putting the casting body into electrolyte for electroplating, wherein the temperature of the electrolyte is kept at 25-30 ℃.
Further, the electrolyte is Na2O·nSiO2，(NaPO3)6，Na2WO4The mixed melt of (1), wherein Na2O·nSiO2Concentration 5g/L, (NaPO)3)6Concentration 5g/L, Na2WO4The concentration was 2 g/L.
Further, the electrolysis process is carried out at a current density of 9-10A/dm 2, a duty ratio of 19-21% and a time of 40-50 min.
The invention has the advantages that: the prepared aluminum alloy shell has good wear resistance and corrosion resistance, and the service life of the whole automobile shell is prolonged.
Detailed Description
Example 1
The automobile aluminum shell is prepared from aluminum alloy, wherein the aluminum alloy comprises, by weight, 18% of Si, 0.11% of Fe0.005% of Cu0.005%, 0.03% of Mg0.03%, 0.002% of Mn0.005%, 0.02% of Ti0.05% of Cr0.05%, and the balance of Al. The raw materials weighed according to the proportion are added into a smelting device for smelting, after the raw materials are completely melted at the smelting temperature of 770 ℃, the mixture is kept stand for 10min, Al-P alloy is added, the temperature is reduced to 740 ℃, the temperature is kept for 30min, finally, the melt is cast and molded, machined into an aluminum shell for a vehicle, and then surface treatment is carried out.
(1) Cleaning the surface of the casting body by using acetone and water in sequence;
(2) polishing the surface by using 300-mesh and 1000-mesh abrasive paper respectively, and then cleaning by using distilled water;
(3) putting the casting body into electrolyte for electroplating, wherein the temperature of the electrolyte is kept at 25 ℃, and the electrolyte is Na 2O-nSiO2，(NaPO3)6，Na2WO4The mixed melt of (1), wherein Na2O·nSiO2Concentration 5g/L, (NaPO)3)6Concentration 5g/L, Na2WO4The concentration is 2g/L, and the current density is 9A/dm2The duty ratio is 19%, and the time is 40 min.
Example 2
The aluminum shell for the vehicle is prepared from aluminum alloy, wherein the aluminum alloy comprises, by weight, Si 21%, Fe0.14%, Cu0.007%, Mg0.05%, Mn0.004%, Zn0.007%, Ti0.04%, Cr0.07%, and the balance of Al. The raw materials weighed according to the proportion are added into a smelting device for smelting, after the raw materials are completely melted at the smelting temperature of 790 ℃, the mixture is kept stand for 20min, Al-P alloy is added, the temperature is reduced to 750 ℃, the temperature is kept for 40min, finally, the melt is cast and molded, the mixture is machined into an aluminum shell for a vehicle, and then surface treatment is carried out.
(4) Cleaning the surface of the casting body by using acetone and water in sequence;
(5) polishing the surface by using 300-mesh and 1000-mesh abrasive paper respectively, and then cleaning by using distilled water;
(6) putting the casting body into electrolyte for electroplating, wherein the temperature of the electrolyte is kept at 30 ℃, and the electrolyte is Na 2O-nSiO2，(NaPO3)6，Na2WO4The mixed melt of (1), wherein Na2O·nSiO2Concentration 5g/L, (NaPO)3)6Concentration 5g/L, Na2WO4The concentration is 2g/L, and the current density is 10A/dm2The duty ratio is 21% and the time is 50 min.
Example 3
The automobile aluminum shell is prepared from aluminum alloy, wherein the aluminum alloy comprises, by weight, 20% of Si, 0.13% of Fe0.005-0.007% of Cu, 0.04% of Mg0.04% of Mn, 0.003% of Zn0.005% of Ti, 0.03% of Cr0.06% of Cr, and the balance of Al. The raw materials weighed according to the proportion are added into a smelting device for smelting, the smelting temperature is 780 ℃, after the raw materials are completely melted, the mixture is kept stand for 15min, Al-P alloy is added, the temperature is reduced to 745 ℃, the temperature is kept for 35min, finally, the melt is cast and molded, the aluminum shell for the vehicle is machined, and then the surface treatment is carried out.
(7) Cleaning the surface of the casting body by using acetone and water in sequence;
(8) polishing the surface by using 300-mesh and 1000-mesh abrasive paper respectively, and then cleaning by using distilled water;
(9) putting the casting body into electrolyte for electroplating, wherein the temperature of the electrolyte is kept at 28 ℃, and the electrolyte is Na 2O-nSiO2，(NaPO3)6，Na2WO4The mixed melt of (1), wherein Na2O·nSiO2Concentration 5g/L, (NaPO)3)6Concentration 5g/L, Na2WO4The concentration is 2g/L, and the current density is 9.5A/dm2The duty cycle is 20% and the time is 45 min.
Comparative example 1
The comparative example differs from example 1 in that the aluminum alloy is a normal aluminum alloy.
Comparative example 2
The comparative example differs from example 1 in that no Al — P alloy was added during melting.
Comparative example 3
The comparative example differs from example 1 in that no surface treatment is performed.
Through performance tests, the aluminum alloy prepared in the embodiment has better wear resistance and corrosion resistance.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (7)
1. The utility model provides an automobile-used aluminium casing which characterized in that: the aluminum shell is prepared from aluminum alloy, and the aluminum alloy comprises, by weight, 18-21% of Si, 0.11-0.14% of Fe0.005-0.007% of Cu0.005-0.007% of Mg0.03-0.05% of Mn0.002-0.004%, 0.005-0.007% of Zn0.02-0.04% of Ti0.05-0.07% of Cr0.05-0.07% of Al, and the balance of Al.
2. The utility model provides an automobile-used aluminium casing which characterized in that: the preparation method of the automobile aluminum shell comprises the steps of adding Al, Fe, Cu, Mg, Zn, Ti, Cr, Al-Si and Al-Mn alloys weighed in proportion into a smelting device for smelting, standing for 10-20 min after all raw materials are melted, adding the Al-P alloy, cooling to 740-750 ℃, preserving heat for 30-40 min, casting and molding the melt, and machining the aluminum shell for the automobile.
3. The aluminum case for a vehicle according to claim 2, characterized in that: the smelting temperature is 770-790 ℃.
4. The aluminum case for a vehicle according to claim 2, characterized in that: and after the machining of the automobile aluminum shell is finished, performing surface treatment.
5. The aluminum case for a vehicle according to claim 2, characterized in that: the surface treatment comprises the following steps:
(1) cleaning the surface of the casting body by using acetone and water in sequence;
(2) polishing the surface by using 300-mesh and 1000-mesh abrasive paper respectively, and then cleaning by using distilled water;
(3) and putting the casting body into electrolyte for electroplating, wherein the temperature of the electrolyte is kept at 25-30 ℃.
6. The aluminum case for a vehicle according to claim 5, wherein: the electrolyte is Na2O·nSiO2，(NaPO3)6，Na2WO4The mixed melt of (1), wherein Na2O·nSiO2Concentration 5g/L, (NaPO)3)6Concentration 5g/L, Na2WO4The concentration was 2 g/L.
7. The aluminum case for a vehicle according to claim 5, wherein: the electrolysis process is carried out at a current density of 9-10A/dm2The duty ratio is 19-21%, and the time is 40-50 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010399898.XA CN111674491A (en) | 2020-05-12 | 2020-05-12 | Aluminum shell for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010399898.XA CN111674491A (en) | 2020-05-12 | 2020-05-12 | Aluminum shell for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111674491A true CN111674491A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010399898.XA Pending CN111674491A (en) | 2020-05-12 | 2020-05-12 | Aluminum shell for vehicle |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5506069A (en) * | 1993-10-14 | 1996-04-09 | Ovonic Battery Company, Inc. | Electrochemical hydrogen storage alloys and batteries fabricated from Mg containing base alloys |
| CN1793436A (en) * | 2005-11-25 | 2006-06-28 | 湖南大学 | Process for directly electroplating on surface of aluminium or aluminium alloy |
| CN101270494A (en) * | 2008-05-08 | 2008-09-24 | 重庆大学 | Galvano-chemistry preparation method for metallic face protection ceramic film |
| CN101629251A (en) * | 2008-07-16 | 2010-01-20 | 贵州红林机械有限公司 | Method for smelting high-silicon aluminum alloy |
| JP2015021184A (en) * | 2013-07-24 | 2015-02-02 | 株式会社ブリヂストン | Method of manufacturing metal wire for reinforcement of rubber article, metal wire for reinforcement of rubber article, pneumatic tire using the same and apparatus for manufacturing metal wire for reinforcement of rubber article |
| CN109402699A (en) * | 2018-11-01 | 2019-03-01 | 中国科学院兰州化学物理研究所 | A kind of aluminum alloy surface acid resistance corrosion function ceramic membrane preparation process |
-
2020
- 2020-05-12 CN CN202010399898.XA patent/CN111674491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5506069A (en) * | 1993-10-14 | 1996-04-09 | Ovonic Battery Company, Inc. | Electrochemical hydrogen storage alloys and batteries fabricated from Mg containing base alloys |
| CN1793436A (en) * | 2005-11-25 | 2006-06-28 | 湖南大学 | Process for directly electroplating on surface of aluminium or aluminium alloy |
| CN101270494A (en) * | 2008-05-08 | 2008-09-24 | 重庆大学 | Galvano-chemistry preparation method for metallic face protection ceramic film |
| CN101629251A (en) * | 2008-07-16 | 2010-01-20 | 贵州红林机械有限公司 | Method for smelting high-silicon aluminum alloy |
| JP2015021184A (en) * | 2013-07-24 | 2015-02-02 | 株式会社ブリヂストン | Method of manufacturing metal wire for reinforcement of rubber article, metal wire for reinforcement of rubber article, pneumatic tire using the same and apparatus for manufacturing metal wire for reinforcement of rubber article |
| CN109402699A (en) * | 2018-11-01 | 2019-03-01 | 中国科学院兰州化学物理研究所 | A kind of aluminum alloy surface acid resistance corrosion function ceramic membrane preparation process |
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Application publication date: 20200918 |
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