CN111647777B - Glass division bar aluminum strip and preparation method thereof - Google Patents
Glass division bar aluminum strip and preparation method thereof Download PDFInfo
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- CN111647777B CN111647777B CN202010459648.0A CN202010459648A CN111647777B CN 111647777 B CN111647777 B CN 111647777B CN 202010459648 A CN202010459648 A CN 202010459648A CN 111647777 B CN111647777 B CN 111647777B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/10—Roughness of roll surface
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- Mechanical Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a glass division bar aluminum strip and a preparation method thereof, wherein the glass division bar aluminum strip comprises the following components in percentage by mass: 0.1-0.15% of silicon, 0.32-0.5% of iron, 0.03-0.05% of copper, 1.3-1.35% of manganese, and the balance of aluminum and all non-removable impurities, wherein the content of a single non-removable impurity is 0-0.05%; the method comprises the following steps: preparing materials, smelting, casting and rolling, cold rolling, finish rolling, straightening and withdrawal, surface treatment and heat treatment; the preparation method provided by the invention is simple, and the tensile strength, the elongation and the surface brightness value of the prepared aluminum strip are obviously improved.
Description
Technical Field
The invention belongs to the technical field of metal material processing, and particularly relates to a glass division bar aluminum strip and a preparation method thereof.
Background
The existing high-end glass division bar aluminum strip is processed by hot rolling 3003 alloy, and has the defects of high energy consumption, long working procedure, high cost and the like. The tensile strength of the 3003 alloy glass division bar aluminum strip produced by the existing casting and rolling method is 180-200MPa, and the elongation is 8-10%. At present, customers require that the tensile strength of the glass division bar aluminum strip is more than or equal to 220MPa, the elongation is more than or equal to 15 percent, and the brightness value is more than or equal to 20, but the existing preparation technology cannot meet the requirements.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the glass division bar aluminum strip and the preparation method thereof, the preparation method is simple, and the tensile strength, the elongation and the surface brightness value of the prepared aluminum strip are obviously improved.
The invention provides the following technical scheme:
the glass division bar aluminum strip comprises the following components in percentage by mass: 0.1-0.15% of silicon, 0.32-0.5% of iron, 0.03-0.05% of copper, 1.3-1.35% of manganese, and the balance of aluminum and all non-removable impurities, wherein the content of a single non-removable impurity is 0-0.05%.
Preferably, the content of iron is 2.5 times the sum of the contents of silicon and copper.
A preparation method of an aluminum strip of a glass division bar comprises the following steps:
preparing the components according to the mass percent, and obtaining a cast-rolled plate with the thickness of 12-13mm after smelting and cast-rolling processes;
transferring the cast-rolled plate to a cold rolling workshop for cold rolling, and obtaining a cold-rolled coil with the thickness of 1.0-1.1mm after cold rolling for a plurality of times;
the cold rolled coil is transferred to a finishing mill after being cooled, and the finish rolled coil with the thickness of 0.3-0.35mm is obtained after a plurality of passes of finish rolling;
transferring the finish rolled coil to a withdrawal and straightening production line, and performing withdrawal and straightening and surface treatment to obtain an aluminum coil;
and transferring the aluminum coil into an annealing furnace for annealing treatment to obtain the glass division bar aluminum strip.
Preferably, in the cold rolling, the rolling is performed in 5 passes in total, and the pass reduction ratio is 37 to 41%.
Preferably, the roughness of the cold rolling cogging roll is Ra0.6-0.7 μm; the rolling oil temperature is 25-28 deg.C during cold rolling, and the spraying amount of the rolling oil nozzle is 50-60%.
Preferably, the cold-rolled coil is cooled for 24 hours and then finish-rolled, and during finish rolling, 3 passes of rolling are performed in total, and the pass processing rate is 30-35%.
Preferably, the roughness of the finish rolling roll is Ra0.1 to 0.12. mu.m.
Preferably, in the withdrawal line, the withdrawal dyne value is from 38 to 45 dyn.
Preferably, the pH of the degreasing solution is 12.5-13, the temperature of the cleaning water is 45-50 ℃, and the cleaning speed is 60-70m/min when the surface treatment is carried out.
Preferably, the step of annealing the aluminum coil includes: heating the furnace gas at 450 ℃ for 5-8h, then cooling to 380 ℃ at the speed of 20-30 ℃/h, preserving heat for 4h, then cooling to 340 ℃ at the speed of 10-20 ℃/h, preserving heat for 15-20h, and discharging and air cooling.
Compared with the prior art, the invention has the beneficial effects that:
(1) the aluminum strip for the glass division bar prepared by the invention has the tensile strength of 225-240MPa, the elongation of more than or equal to 15 percent and the brightness value of 22-32;
(2) according to the preparation method of the glass division bar aluminum strip, provided by the invention, the tensile strength of a finished product is increased by 45-60MPa, the elongation is improved by 50-87%, and the surface brightness value is obviously increased by controlling the mass content of each component, increasing the thickness of a cast-rolled blank, controlling the thickness of a semi-finished product in cold rolling and finish rolling processes and controlling the roughness of an oil temperature and a working roll.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
A preparation method of an aluminum strip of a glass division bar comprises the following steps:
s1, preparing materials: preparing the following components in percentage by mass: 0.1% of silicon, 0.325% of iron, 0.03% of copper, 1.35% of manganese, and the balance of aluminum and all unremovable impurities, wherein the content of a single unremovable impurity is 0-0.05%;
s2, casting and rolling: smelting and cast-rolling the components in the S1 to obtain a cast-rolled plate with the thickness of 12 mm;
s3, cold rolling: transferring the cast-rolled plate to a cold rolling workshop for cold rolling, and rolling for 5 passes by a cogging mill to obtain a cold-rolled coil, wherein the thickness of a semi-finished product in each pass is 7.2mm → 4.5mm → 2.7mm → 1.6mm → 1.0mm, the pass working ratio is 37-41%, and the roughness of a cogging roller is Ra0.6 mu m; the rolling oil temperature is 25 ℃ during cold rolling, and the spraying amount of the used rolling oil nozzle is 50%;
s4, finish rolling: the cold rolled coil is cooled for 24 hours and then transferred to a finishing mill, and the finish rolled coil is obtained after 3 passes of finish rolling, the thickness of the semi-finished product of each pass is 0.67mm → 0.45mm → 0.3mm, wherein the pass machining rate is 30-35%, and the roughness of the finish rolling roller is Ra0.1 mu m;
s5, transferring the finish rolled coil to a withdrawal and straightening production line, and performing withdrawal and straightening and surface treatment to obtain an aluminum coil, wherein the dyne value after withdrawal and straightening is 39dyn, the pH value of degreasing liquid during surface treatment is 12.5, the temperature of cleaning water is 50 ℃, and the cleaning speed is 60 m/min;
s6, heat treatment: and transferring the aluminum coil into an annealing furnace for annealing treatment, raising the temperature of furnace gas to 450 ℃ for 5h, then lowering the temperature to 380 ℃ at the speed of 20 ℃/h, preserving the heat for 4h, then lowering the temperature to 340 ℃ at the speed of 10 ℃/h, preserving the heat for 20h, discharging from the furnace and air cooling, thus obtaining the glass division bar aluminum strip.
Through mechanical property and brightness test, the tensile strength of the final product of the glass division bar aluminum strip is 228MPa, the elongation is 20%, and the brightness value is 25.
Example 2
A preparation method of an aluminum strip of a glass division bar comprises the following steps:
s1, preparing materials: preparing the following components in percentage by mass: 0.13% of silicon, 0.425% of iron, 0.04% of copper, 1.33% of manganese, and the balance of aluminum and all unremovable impurities, wherein the content of single unremovable impurity is 0-0.05%;
s2, casting and rolling: smelting and cast-rolling the components in the S1 to obtain a cast-rolled plate with the thickness of 12.5 mm;
s3, cold rolling: transferring the cast-rolled plate to a cold rolling workshop for cold rolling, and rolling for 5 passes by a cogging mill to obtain a cold-rolled coil, wherein the thickness of a semi-finished product in each pass is 7.5mm → 4.5mm → 2.75mm → 1.7mm → 1.05mm, the pass working ratio is 37-41%, and the roughness of a cogging roller is Ra0.65 mu m; the rolling oil temperature in cold rolling is 27 ℃, and the spraying amount of the used rolling oil nozzle is 55 percent;
s4, finish rolling: the cold rolled coil is cooled for 24 hours and then transferred to a finishing mill, and the finish rolled coil is obtained after 3 passes of finish rolling, the thickness of the semi-finished product of each pass is 0.72mm → 0.5mm → 0.35mm, wherein the pass machining rate is 30-35%, and the roughness of the finish rolling roller is Ra0.11 mu m;
s5, transferring the finish rolled coil to a withdrawal and straightening production line, and performing withdrawal and straightening and surface treatment to obtain an aluminum coil, wherein the dyne value after withdrawal and straightening is 42dyn, the pH value of degreasing liquid during surface treatment is 13, the temperature of cleaning water is 45 ℃, and the cleaning speed is 70 m/min;
s6, heat treatment: and transferring the aluminum coil into an annealing furnace for annealing treatment, heating the aluminum coil for 6 hours at the temperature of 450 ℃ of furnace gas, then cooling the aluminum coil to 380 ℃ at the speed of 25 ℃/h, preserving the heat for 4 hours, then cooling the aluminum coil to 340 ℃ at the speed of 15 ℃/h, preserving the heat for 17 hours, discharging the aluminum coil from the furnace and air cooling the aluminum coil to obtain the glass division bar aluminum strip.
Through mechanical property and brightness test, the tensile strength of the final product of the glass division bar aluminum strip is 235MPa, the elongation is 18 percent, and the brightness value is 28.
Example 3
A preparation method of an aluminum strip of a glass division bar comprises the following steps:
s1, preparing materials: preparing the following components in percentage by mass: 0.15% of silicon, 0.5% of iron, 0.05% of copper, 1.3% of manganese, and the balance of aluminum and all unremovable impurities, wherein the content of a single unremovable impurity is 0-0.05%;
s2, casting and rolling: smelting and cast-rolling the components in the S1 to obtain a cast-rolled plate with the thickness of 13 mm;
s3, cold rolling: transferring the cast-rolled plate to a cold rolling workshop for cold rolling, and rolling for 5 passes by a cogging mill to obtain a cold-rolled coil, wherein the thickness of a semi-finished product in each pass is 7.8mm → 4.8mm → 3.0mm → 1.8mm → 1.1mm, the pass working ratio is 37-41%, and the roughness of a cogging roller is Ra0.7 mu m; the rolling oil temperature in the cold rolling is 28 ℃, and the spraying amount of 5 rolling oil nozzles is 60 percent;
s4, finish rolling: the cold rolled coil is cooled for 24 hours and then transferred to a finishing mill, and the finish rolled coil is obtained after 3 passes of finish rolling, the thickness of the semi-finished product of each pass is 0.72mm → 0.48mm → 0.32mm, wherein the pass machining rate is 30-35%, and the roughness of the finish rolling roller is Ra0.12 mu m;
s5, transferring the finish rolled coil to a withdrawal and straightening production line, and performing withdrawal and straightening and surface treatment to obtain an aluminum coil, wherein the dyne value after withdrawal and straightening is 45dyn, the pH value of degreasing liquid during surface treatment is 12.7, the temperature of cleaning water is 47 ℃, and the cleaning speed is 65 m/min;
s6, heat treatment: and transferring the aluminum coil into an annealing furnace for annealing treatment, heating the aluminum coil for 8 hours at the temperature of 450 ℃ of furnace gas, then cooling the aluminum coil to 380 ℃ at the speed of 30 ℃/h, preserving the heat for 4 hours, then cooling the aluminum coil to 340 ℃ at the speed of 20 ℃/h, preserving the heat for 15 hours, discharging the aluminum coil from the furnace and air cooling the aluminum coil to obtain the glass division bar aluminum strip.
Through mechanical property and brightness test, the tensile strength of the final product of the glass division bar aluminum strip is 240MPa, the elongation is 16%, and the brightness value is 32.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The preparation method of the glass division bar aluminum strip is characterized in that the glass division bar aluminum strip comprises the following components in percentage by mass: 0.1-0.15% of silicon, 0.32-0.5% of iron, 0.03-0.04% of copper, 1.3-1.35% of manganese and the balance of aluminum and all unremovable impurities, wherein the content of single unremovable impurity is 0-0.05%, and the content of iron element is 2.5 times of the sum of the contents of silicon and copper elements;
the preparation method of the glass division bar aluminum strip comprises the following steps:
preparing the components according to the mass percent, and obtaining a cast-rolled plate with the thickness of 12-13mm after smelting and cast-rolling processes;
transferring the cast-rolled plate to a cold rolling workshop for cold rolling, wherein the roughness of a cold rolling cogging roller is Ra0.6-0.7 mu m, the temperature of rolling oil during cold rolling is 25-28 ℃, and obtaining a cold-rolled coil with the thickness of 1.0-1.1mm after cold rolling for a plurality of times;
the cold rolled coil is transferred to a finishing mill after being cooled, the roughness of a finishing roller is Ra0.1-0.12 mu m, and the finish rolled coil with the thickness of 0.3-0.35mm is obtained after a plurality of times of finish rolling;
transferring the finish rolled coil to a withdrawal and straightening production line, and performing withdrawal and straightening and surface treatment to obtain an aluminum coil;
and transferring the aluminum coil into an annealing furnace for annealing treatment, wherein the annealing treatment comprises the following steps: heating the furnace gas at 450 ℃ for 5-8h, cooling to 380 ℃ at the speed of 20-30 ℃/h, preserving heat for 4h, cooling to 340 ℃ at the speed of 10-20 ℃/h, preserving heat for 15-20h, discharging and air cooling to obtain the glass division bar aluminum strip.
2. The method for producing an aluminum strip for a glass division bar as claimed in claim 1, wherein the cold rolling is carried out in a total of 5 passes with a pass reduction of 37 to 41%.
3. The method for producing an aluminum strip for a glass division bar as claimed in claim 1, wherein the spraying amount of 5 rolling oil nozzles used in the cold rolling is 50 to 60%.
4. The method for producing an aluminum strip for a glass division bar according to claim 1, wherein the cold rolled coil is cooled for 24 hours and then subjected to finish rolling, and the finish rolling is performed in a total of 3 passes with a pass reduction rate of 30 to 35%.
5. The method of claim 1, wherein the withdrawal-straightening dyne value is not less than 38dyn in the withdrawal-straightening line.
6. The method for preparing the glass division bar aluminum strip according to claim 1, wherein the degreasing solution has a pH of 12.5 to 13, a cleaning water temperature of 45 to 50 ℃ and a cleaning speed of 60 to 70m/min when the surface treatment is performed.
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| CN101444789A (en) * | 2008-12-31 | 2009-06-03 | 东北轻合金有限责任公司 | Method for preparing aluminum alloy matt plate |
| CN102433476A (en) * | 2011-11-17 | 2012-05-02 | 江苏常铝铝业股份有限公司 | Aluminum alloy strip for LED (Light-Emitting Diode) back plate and manufacturing method thereof |
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