CN115418582A - Production method of high-precision aluminum plate - Google Patents
Production method of high-precision aluminum plate Download PDFInfo
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- CN115418582A CN115418582A CN202210455767.8A CN202210455767A CN115418582A CN 115418582 A CN115418582 A CN 115418582A CN 202210455767 A CN202210455767 A CN 202210455767A CN 115418582 A CN115418582 A CN 115418582A
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- China
- Prior art keywords
- aluminum plate
- precision
- forging
- straightening
- aluminum
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 108
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000005242 forging Methods 0.000 claims abstract description 30
- 230000032683 aging Effects 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 230000000171 quenching effect Effects 0.000 claims abstract description 12
- 238000010791 quenching Methods 0.000 claims abstract description 11
- 230000035882 stress Effects 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000002826 coolant Substances 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The application provides a production method of a high-precision aluminum plate, which comprises the following steps: s1, cleaning the surface of an aluminum plate, removing oil stains and dirt on the surface, cleaning and drying; s2, the aging treatment step comprises the steps of putting the aluminum plate into an aging furnace, heating to 110-120 ℃ at the speed of 20-30 ℃/h, preserving heat for 3-4h, heating to 180-210 ℃ at the heating rate of 15-25 ℃/h, and preserving heat for 6-15h to perform aging treatment; s3, quenching the aluminum plate subjected to the solution treatment into a specified cooling medium for cooling, and controlling the quenching transfer within 15S; s4, forging and pressing the quenched aluminum plate in a forging press for multiple times until the quenched aluminum plate is straight, and repeatedly straightening and bending the quenched aluminum plate in a straightening machine for multiple times to eliminate the internal stress of the aluminum plate until the quenched aluminum plate is leveled; and S5, polishing the surface of the leveled aluminum plate to obtain the high-precision aluminum plate. The production method of the high-precision aluminum plate has high strength, and can obtain excellent plasticity and good pressure processing performance.
Description
Technical Field
The application relates to the technical field of aluminum alloy smelting and processing, in particular to a production method of a high-precision aluminum plate.
Background
The high-precision aluminum plate has wide application and can be used in high-precision industries such as electronic products (mobile phones and the like), industrial automation industries and the like. Because the thickness and the flatness accuracy of the inlet aluminum plate are high, the small internal stress means that the processing deformation is small. At present, aluminum plates with the flatness of 0.3mm per square meter produced by domestic high-precision aluminum plates cannot meet the market requirements, and meanwhile, a large amount of internal stress generated by heat treatment cannot be effectively eliminated, so that the strength and hardness of the aluminum plates are insufficient, and the enterprise requirements cannot be met.
Disclosure of Invention
The application aims to solve the defects in the prior art and provides a production method of a high-precision aluminum plate.
In order to achieve the above purpose, the present application provides a method for producing a high-precision aluminum plate, comprising the following steps:
s1, cleaning the surface of an aluminum plate, removing oil stains and dirt on the surface, cleaning and drying;
s2, placing the aluminum plate in a solution treatment furnace, raising the temperature to 300-350 ℃ at a temperature rise rate of 15-35 ℃/h, and preserving heat for 0.5-1h, and then raising the temperature to 520-570 ℃ at a temperature rise rate of 15-20 ℃/h, and preserving heat for 0.5-4h to carry out solution treatment;
s3, quenching the aluminum plate subjected to the solution treatment into a specified cooling medium for cooling, and controlling the quenching transfer within 15S;
s4, forging and pressing the quenched aluminum plate in a forging press for multiple times until the quenched aluminum plate is straight, and repeatedly straightening and bending the quenched aluminum plate in a straightening machine for multiple times to eliminate the internal stress of the aluminum plate until the quenched aluminum plate is leveled;
and S5, polishing the surface of the leveled aluminum plate to obtain the high-precision aluminum plate.
As a preferable configuration of the present application, the method further includes a step of performing an aging treatment on the aluminum sheet to be artificially aged after step S3 and before step S4.
As a preferred arrangement herein, the step of ageing is performed within 0.5h after quenching.
As a preferable arrangement of the application, the aging treatment step comprises the steps of putting the aluminum plate into an aging furnace, raising the temperature to 110-120 ℃ at the speed of 20-30 ℃/hour, and preserving the temperature for 3-4 hours, and then raising the temperature to 180-210 ℃ at the temperature raising speed of 15-25 ℃/hour, and preserving the temperature for 6-15 hours to carry out the aging treatment.
As a preferable configuration of the present application, in the forging treatment in step S4, the forging hammer stabilizes the pressure on the aluminum plate at a pressure of 0.2 to 1.0MPa for 1 to 3min each time the aluminum plate is forged; firstly, forging and pressing the upper surface of the aluminum plate, and then forging and pressing the lower surface, wherein the forging and pressing amount of the lower surface is the same as that of the upper surface; each surface is equally divided into a plurality of forging and pressing, and the forging and pressing quantity is gradually reduced until the aluminum plate is straight.
As a preferable setting of the present application, during the leveling processing in the step S4, the straightening needs to be repeated for a plurality of times; according to different thicknesses of the aluminum plate, the distance between the upper row of straightening rollers and the lower row of straightening rollers of the straightening machine is adjusted, the distance between the straightening rollers is slowly adjusted from the large distance to be close to the thickness of the aluminum plate at each time, the straightening starts from the side with large deformation, and the other side is turned over when the straightening is finished until the aluminum plate is leveled.
As a preferred arrangement herein, the cooling medium is pure water.
As the preferable setting of the application, the high-precision aluminum plate has the thickness of 4 mm-20 mm, the thickness tolerance of +/-0.02 and the flatness of 0.05 square meter/mm.
As a preferable setting of the application, the high-precision aluminum plate has the thickness of 25 mm-40 mm, the thickness tolerance of +/-0.04 and the flatness of 0.08 square meter/mm.
The beneficial effect of this application does:
the production method of the high-precision aluminum plate has the advantages that the aluminum plate has higher strength through solution treatment, excellent plasticity and good pressure processing performance can be obtained, after the aluminum plate is subjected to precision shaping of forging and straightening, most internal stress generated by heat treatment can be eliminated, the flatness of the aluminum plate is improved, the strength and the hardness of the aluminum plate are increased, the plasticity is reduced, and the surface quality, the thickness tolerance and the thickness consistency are improved after further polishing treatment.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The application provides a production method of a high-precision aluminum plate, which comprises the following steps:
s1, cleaning the surface of an aluminum plate, removing oil stains and dirt on the surface, cleaning and drying;
s2, placing the aluminum plate in a solution treatment furnace, raising the temperature to 300-350 ℃ at a heating rate of 15-35 ℃/hour, and preserving heat for 0.5-1h, and then raising the temperature to 520-570 ℃ at a heating rate of 15-20 ℃/hour, and preserving heat for 0.5-4h to carry out solution treatment;
s3, quenching the aluminum plate subjected to the solution treatment into a specified cooling medium for cooling, and controlling the quenching transfer within 15S;
s4, forging and pressing the quenched aluminum plate in a forging press for multiple times until the quenched aluminum plate is straight, and repeatedly straightening and bending the quenched aluminum plate in a straightening machine for multiple times to eliminate the internal stress of the aluminum plate until the quenched aluminum plate is leveled;
and S5, polishing the surface of the leveled aluminum plate to obtain the high-precision aluminum plate.
As a preferable configuration of the present application, the method further includes a step of performing an aging treatment on the aluminum sheet to be artificially aged after step S3 and before step S4.
As a preferred arrangement herein, the step of ageing is performed within 0.5h after quenching.
As a preferable arrangement of the application, the aging treatment step comprises the steps of putting the aluminum plate into an aging furnace, raising the temperature to 110-120 ℃ at the speed of 20-30 ℃/hour, and preserving the temperature for 3-4 hours, and then raising the temperature to 180-210 ℃ at the temperature raising speed of 15-25 ℃/hour, and preserving the temperature for 6-15 hours to carry out the aging treatment.
As a preferable configuration of the present application, in the forging treatment in step S4, the forging hammer stabilizes the pressure on the aluminum plate at a pressure of 0.2 to 1.0MPa for 1 to 3min each time the aluminum plate is forged; firstly, forging and pressing the upper surface of the aluminum plate, and then forging and pressing the lower surface, wherein the forging and pressing amount of the lower surface is the same as that of the upper surface; each surface is equally forged and pressed for multiple times, and the forging and pressing quantity is gradually reduced until the aluminum plate is straight.
As a preferable configuration of the present application, during the leveling process in step S4, the straightening process needs to be repeated for a plurality of times; the distance between the upper row of straightening rollers and the lower row of straightening rollers of the straightening machine is adjusted according to different thicknesses of the aluminum plates, the distance between the straightening rollers is gradually adjusted from large to be close to the thickness of the aluminum plates every time, the straightening starts from the side with larger deformation, and the other side is turned over when the straightening is finished until the aluminum plates are leveled.
As a preferred arrangement herein, the cooling medium is pure water.
As the preferable setting of the application, the high-precision aluminum plate has the thickness of 4 mm-20 mm, the thickness tolerance of +/-0.02 and the flatness of 0.05 square meter/mm.
As a preferable setting of the application, the high-precision aluminum plate has the thickness of 25 mm-40 mm, the thickness tolerance of +/-0.04 and the flatness of 0.08 square meter/mm.
When it needs to be explained here, in the process of producing the high-precision aluminum plate according to the method of the present application, the solution temperature and the material transfer time need to be strictly controlled in the solution treatment process, and the selection of the cooling medium also affects the quenching effect; too large or too small pressing amount and pressure in the forging and leveling process can also cause influence, for example, the aluminum plate is easy to crack due to too large pressure, so that the product is scrapped, and meanwhile, the stress cannot be effectively eliminated, so that the leveling effect is achieved; in the aging process, the main control factors are aging time and aging temperature, for example, the aging temperature is too low or too high, which can affect the category and the quantity of precipitated phases, and the effect after the aging is not obvious. Therefore, the production process of each step must be strictly controlled.
The application provides a production method of a high-precision aluminum plate, the high-precision aluminum plate has higher strength through solution treatment, excellent plasticity and good pressure processing performance can be obtained, after forging and pressing, the aluminum plate achieves the effect of strengthening crystal grains, the plasticity of the aluminum plate is changed to a certain extent through straightening, internal stress is eliminated, and the aluminum plate is leveled; aging treatment is carried out, so that the strength and the hardness of the aluminum plate are improved, and the plasticity is reduced; after further polishing treatment, the surface quality and thickness tolerance and thickness consistency are improved.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (9)
1. The production method of the high-precision aluminum plate is characterized by comprising the following steps of:
s1, cleaning the surface of an aluminum plate, removing oil stains and dirt on the surface, cleaning and drying;
s2, placing the aluminum plate in a solution treatment furnace, raising the temperature to 300-350 ℃ at a temperature rise rate of 15-35 ℃/h, and preserving heat for 0.5-1h, and then raising the temperature to 520-570 ℃ at a temperature rise rate of 15-20 ℃/h, and preserving heat for 0.5-4h to carry out solution treatment;
s3, quenching the aluminum plate subjected to the solution treatment into a cooling medium for cooling, and controlling the quenching transfer within 15S;
s4, forging and pressing the quenched aluminum plate in a forging press for multiple times until the quenched aluminum plate is straight, and repeatedly straightening and bending the quenched aluminum plate in a straightening machine for multiple times to eliminate the internal stress of the aluminum plate until the quenched aluminum plate is leveled;
and S5, polishing the surface of the leveled aluminum plate to obtain the high-precision aluminum plate.
2. A method for producing high-precision aluminium sheet according to claim 1, further comprising the step of ageing the aluminium sheet to be artificially aged after step S3 and before step S4.
3. A method of producing high precision aluminium sheet according to claim 2 wherein the ageing step is performed within 0.5h after quenching.
4. The method for producing a high-precision aluminum plate according to claim 2, wherein the aging treatment step comprises placing the aluminum plate in an aging furnace, raising the temperature to 110-120 ℃ at a rate of 20-30 ℃/hr and keeping the temperature for 3-4h, and then raising the temperature to 180-210 ℃ at a rate of 15-25 ℃/hr and keeping the temperature for 6-15h to perform the aging treatment.
5. The method for producing a high-precision aluminum sheet according to claim 1, wherein in the step S4, the forging hammer stabilizes the pressure on the aluminum sheet at a pressure of 0.2 to 1.0MPa for 1 to 3 minutes each time the aluminum sheet is forged; firstly, forging and pressing the upper surface of the aluminum plate, and then forging and pressing the lower surface, wherein the forging and pressing amount of the lower surface is the same as that of the upper surface; each surface is equally divided into a plurality of forging and pressing, and the forging and pressing quantity is gradually reduced until the aluminum plate is straight.
6. A method for producing a high-precision aluminum plate according to claim 1, wherein the leveling in step S4 is performed by repeating the straightening for a plurality of times; according to different thicknesses of the aluminum plate, the distance between the upper row of straightening rollers and the lower row of straightening rollers of the straightening machine is adjusted, the distance between the straightening rollers is slowly adjusted from the large distance to be close to the thickness of the aluminum plate at each time, the straightening starts from the side with large deformation, and the other side is turned over when the straightening is finished until the aluminum plate is leveled.
7. A method for producing a high-precision aluminum sheet according to claim 1, wherein the cooling medium is pure water.
8. The method for producing high precision aluminum sheets according to claim 1, wherein the high precision aluminum sheets have a thickness of from 4mm to 20mm, a thickness tolerance of ± 0.02, and a flatness of 0.05 square meters per mm.
9. The method for producing high precision aluminum sheets according to claim 1 wherein the high precision aluminum sheets have a thickness of from 25mm to 40mm, a thickness tolerance of ± 0.04 and a flatness of 0.08 square meters per mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210455767.8A CN115418582A (en) | 2022-04-28 | 2022-04-28 | Production method of high-precision aluminum plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210455767.8A CN115418582A (en) | 2022-04-28 | 2022-04-28 | Production method of high-precision aluminum plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115418582A true CN115418582A (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210455767.8A Pending CN115418582A (en) | 2022-04-28 | 2022-04-28 | Production method of high-precision aluminum plate |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672218A (en) * | 1996-06-24 | 1997-09-30 | Slater Steels Corporation | Method of straightening metal bars having extremely low levels of residual stress after straightening operations are completed |
| CN110343981A (en) * | 2019-07-04 | 2019-10-18 | 怀化市科捷铝业科技有限公司 | A kind of production method of 6061 super flat aluminium alloy plate |
| CN112646986A (en) * | 2020-09-09 | 2021-04-13 | 广东吉源铝业有限公司 | Production process of 6061T651 aluminum alloy plate |
-
2022
- 2022-04-28 CN CN202210455767.8A patent/CN115418582A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672218A (en) * | 1996-06-24 | 1997-09-30 | Slater Steels Corporation | Method of straightening metal bars having extremely low levels of residual stress after straightening operations are completed |
| CN110343981A (en) * | 2019-07-04 | 2019-10-18 | 怀化市科捷铝业科技有限公司 | A kind of production method of 6061 super flat aluminium alloy plate |
| CN112646986A (en) * | 2020-09-09 | 2021-04-13 | 广东吉源铝业有限公司 | Production process of 6061T651 aluminum alloy plate |
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Application publication date: 20221202 |