CN110000209B - 4-pass rolling method for aluminum foil with thickness of 0.005mm - Google Patents
4-pass rolling method for aluminum foil with thickness of 0.005mm Download PDFInfo
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- CN110000209B CN110000209B CN201910178892.7A CN201910178892A CN110000209B CN 110000209 B CN110000209 B CN 110000209B CN 201910178892 A CN201910178892 A CN 201910178892A CN 110000209 B CN110000209 B CN 110000209B
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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
- B21B1/40—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 foils which present special problems, e.g. because of thinness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0206—Coolants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0242—Lubricants
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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
Abstract
The invention relates to rolling preparation of 0.005mm ultrathin aluminum foil, in particular to a foil rolling preparation method for 0.005mm thick aluminum foil by 4-pass rolling, which reduces original 5-pass foil rolling to 4-pass foil rolling by adjusting the process oil product of a foil rolling mill and optimizing the pass distribution of foil rolling. By the method, the number of foil rolling passes is reduced, and the overall foil rolling efficiency is improved by over 15%.
Description
Technical Field
The invention relates to rolling preparation of 0.005mm ultrathin aluminum foil, in particular to a 4-pass rolling method of 0.005mm thick aluminum foil.
Background
At present, the application of the aluminum foil is more and more extensive, China also becomes a large country for producing the aluminum foil, the demand of the ultrathin aluminum foil is continuously increased along with the cost control of aluminum foil using manufacturers and the change of international environment, but the efficiency is difficult to be improved because the ultrathin aluminum foil is rolled by 5 passes at present; or the aluminum foil with the thickness of 0.005mm cannot be obtained by adopting other four-pass production methods.
For example, in patent CN2011102140667.8, the preparation flow of foil rolling in 5 passes is as follows:
0.3mm-0.14mm-0.07mm-0.038mm-0.013 mm-2 x 0.005 mm.
The foil rolling efficiency of the above 5 passes is low, and the labor, the oil consumption of the foil rolling and the power consumption cost are high.
And then the preparation process of rolling 0.006-0.009 mm by four passes is adopted as in the patent CN 201010112170.0:
0.28 mm-0.095-0.011 mm-0.038-0.045 mm-0.014.5-0.018 mm-convolution-2 x 0.006-0.009 mm.
The above 4-pass foil rolling technique cannot obtain 0.005mm ultrathin aluminum foil products.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a 4-pass rolling method of an aluminum foil with the thickness of 0.005mm, which reduces the number of passes of foil rolling and improves the overall efficiency of foil rolling.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
the 4-pass rolling method of the aluminum foil with the thickness of 0.005mm is characterized by comprising the following process flows of:
1) selecting a base material:
adopting a blank with the thickness of 0.21m, wherein the blank is AA1235 aluminum foil;
2) and foil rolling for the 1 st pass:
a substrate with the thickness of 0.21mm enters a roughing mill through an inlet of the roughing mill, and a material coil with the thickness of 0.082mm +/-3% is obtained from an outlet of the roughing mill;
3) and foil rolling for the 2 nd pass:
feeding a material roll with the thickness of 0.082mm +/-3% into a middle rolling mill through an inlet of the middle rolling mill, and obtaining the material roll with the thickness of 0.032mm +/-3% from an outlet of the middle rolling mill;
4) and foil rolling for the 3 rd pass:
feeding a material roll with the thickness of 0.032mm +/-3% into a middle rolling mill through an inlet of the middle rolling mill, and obtaining a material roll with the thickness of 0.0128mm +/-3% from an outlet of the middle rolling mill;
5) and rolling:
doubling two material rolls with the thickness of 0.0128mm +/-3% in a doubling machine, overlapping the two material rolls into an aluminum foil, uniformly spraying doubling oil between the two layers of aluminum foils through the doubling machine, and obtaining the material roll with the thickness of 2 x 0.0128mm +/-3% from an outlet of the doubling machine;
6) and foil rolling for the 4 th pass:
feeding the material coil with the thickness of 2 x 0.0128mm +/-3% after the coil combination into a finishing mill through an inlet of the finishing mill, and obtaining aluminum foil with the thickness of 2 x 0.005mm +/-3% from an outlet of the finishing mill:
7) cutting process
The aluminum foil with a finished thickness of 2 x 0.005mm +/-3% was cut by a slitter machine.
And (3) in the foil rolling process of the steps 2), 3), 4) and 6), cooling lubricating oil is adopted, wherein the cooling lubricating oil contains an additive, and the additive is a mixture of an alcohol additive, an ester additive and an acid additive.
The alcohol additive is lauryl alcohol, the ester additive is butyl stearate, and the acid additive is lauric acid. The additive in the step 2) accounts for 6.91 to 8.93 percent of the cooling lubricating oil; in the steps 3) and 4), the additive accounts for 6.61-8.63% of the cooling lubricating oil; the additive accounts for 6.9-8.92% of the cooling lubricating oil in the step 6), and the percentage is mass percent.
In the foil rolling process of the steps 2), 3), 4) and 6), the reduction of each foil rolling is about 60%, and the foil rolling speed is as follows: the first pass is 700-800m/min, the second pass is 1000-1100m/min, the third pass is 1100-1200m/min, and the fourth pass is 600-700 m/min. The inlet tension is: 3.0-4.0 Kg/mm of the first pass24.0-5.5 Kg/mm for the second pass24.0-5.5 Kg/mm for the third pass24.0-5.5 Kg/mm for the fourth pass2(ii) a The outlet tension is: 3.2-4.5 Kg/mm for the first pass2The second pass is 3.2 to 4.5Kg/mm23.2 to 4.5Kg/mm for the third pass23.8-4.2 Kg/mm for the fourth pass2. The rolling force is as follows: the first pass is 90-140T, the second pass is 110-160T, the third pass is 170-210T, and the fourth pass is 190-240T. The oil temperature is as follows: the temperature of the first pass is 30-45 ℃, the temperature of the second pass is 30-45 ℃, the temperature of the third pass is 35-50 ℃, and the temperature of the fourth pass is 40-50 ℃.
Compared with the prior art, the invention has the outstanding advantages that: the rolling of the 0.005mm thick aluminum foil is reduced from 5 passes to 4 passes, firstly, the foil rolling passes are directly reduced by 25 percent, the speed from 1 pass to 4 passes can be improved, and the integral efficiency is improved by more than 15 percent; and secondly, the oil consumption, the power consumption and the labor input can be reduced.
If 12000 tons of 0.005mm aluminum foil is produced annually, the foil rolling is carried out for 4 times, the overall efficiency can be improved by 15 percent, namely 1800 tons of more product is produced, the processing cost is calculated according to the current 15000 yuan/ton, and the annual increase benefit is 2700 ten thousand.
Drawings
FIG. 1 is a flow chart of a 4-pass foil rolling process of 0.005mm aluminum foil.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
The foil rolling preparation process of the invention comprises foil rolling for 4 passes: 0.21mm-0.082mm-0.032mm-0.0128 mm-involution 2 x 0.0128 x 2 x 0.005 mm.
The average reduction per pass is about 60%, the foil rolling speed is 800m/min for the first pass, 1100m/min for the second pass, 1200m/min for the third pass and 700m/min for the fourth pass, wherein the first pass is 700-. The thickness of the aluminum foil at the first secondary inlet is 0.21mm, and the alloy mark is AA 1235.
The 4-pass rolling method of the aluminum foil with the thickness of 0.005mm comprises the following steps:
1) base material
Adopting a blank with the thickness of 0.21m, wherein the alloy is AA 1235;
2) foil rolling 1 st pass
The substrate with a thickness of 0.21mm was rolled through 4 rolls (which is a four-high mill) entering a roughing mill through an inlet, the outlet obtaining a product with a thickness of 0.082mm +/-3%;
3) foil rolling 2 nd pass
The material coil with the thickness of 0.082mm +/-3 percent enters a 4-roller rolling mill through an inlet and a product with the thickness of 0.032mm +/-3 percent is obtained at an outlet;
4) foil rolling pass 3
Rolling a coil with the thickness of 0.032mm +/-3% by 4 rollers entering a medium rolling mill through an inlet, and obtaining a product with the thickness of 0.0128mm +/-3% through an outlet;
5) and then rolling up
Doubling two material rolls with the thickness of 0.0128mm +/-3% in a doubling winder, overlapping the two aluminum foils up and down to form an aluminum foil, uniformly spraying doubling oil between the two aluminum foils through the doubling winder, and obtaining a product with the thickness of 2 x 0.0128mm +/-3% at an outlet;
6) foil rolling pass 4
The material roll with the thickness of 2 x 0.0128mm +/-3% after the coiling enters a finish rolling 4-roller rolling device through an inlet, and a product with the thickness of 0.005mm +/-3% is obtained at an outlet.
7) Cutting process
The finished thick aluminum foil with the thickness of 2 x 0.005mm +/-3 percent is cut by a splitting machine, and the width and the length required by downstream customers can be obtained.
In addition, there are annealing and packaging steps after the slitting process.
The specific technological parameters of 4-pass foil rolling of the aluminum foil with the thickness of 0.005mm are shown in a table 1, and the formulas of rolling oil and additives are shown in a table 2.
TABLE 1 Rolling Process parameters
Wherein, the spraying amount refers to the spraying amount and the roughness of the cooling lubricating oil of the rolling mill, the surface roughness of the roller and the oil temperature refers to the temperature of the cooling lubricating oil; the roughness is detected by a special roughness measuring instrument, and the plate shape value is detected by an off-line plate shape instrument. The spraying amount is the inherent setting mode of each rolling mill in percentage (for example, the spraying amount is 2500 cubic/min when the oil spraying flow rate of the rolling mill is 5000 cubic/min and the spraying amount is 50 percent).
TABLE 2 formula of rolling oil and additives
Wherein the percentage is mass percentage.
According to the foil rolling preparation method, the foil rolling process oil product of the foil rolling mill is adjusted, the pass distribution of foil rolling is optimized, the original foil rolling of 5 passes is reduced to foil rolling of 4 passes, and the aluminum foil with the thickness of 0.005mm is obtained, and the surface roughness of the aluminum foil with the thickness of 0.005mm is low. By the method, the number of foil rolling passes is reduced, and the overall foil rolling efficiency is improved by over 15%.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
- The 4-pass rolling method of the aluminum foil with the thickness of 1.0.005mm is characterized by comprising the following process flows of:1) selecting a base material:adopting a blank with the thickness of 0.21mm, wherein the blank is AA1235 aluminum foil;2) and foil rolling for the 1 st pass:a substrate with the thickness of 0.21mm enters a roughing mill through an inlet of the roughing mill, and a material coil with the thickness of 0.082mm +/-3% is obtained from an outlet of the roughing mill; the foil rolling speed is 700 and 800 m/min;3) and foil rolling for the 2 nd pass:feeding a material roll with the thickness of 0.082mm +/-3% into a middle rolling mill through an inlet of the middle rolling mill, and obtaining the material roll with the thickness of 0.032mm +/-3% from an outlet of the middle rolling mill; the foil rolling speed is 1000-1100 m/min;4) and foil rolling for the 3 rd pass:feeding a material roll with the thickness of 0.032mm +/-3% into a middle rolling mill through an inlet of the middle rolling mill, and obtaining a material roll with the thickness of 0.0128mm +/-3% from an outlet of the middle rolling mill; the foil rolling speed is 1100-1200 m/min;5) and rolling:doubling two material rolls with the thickness of 0.0128mm +/-3% in a doubling machine, overlapping the two material rolls into an aluminum foil, uniformly spraying doubling oil between the two layers of aluminum foils through the doubling machine, and obtaining the material roll with the thickness of 2 x 0.0128mm +/-3% from an outlet of the doubling machine;6) and foil rolling for the 4 th pass:feeding the material coil with the thickness of 2 x 0.0128mm +/-3% after the coil combination into a finishing mill through an inlet of the finishing mill, and obtaining aluminum foil with the thickness of 2 x 0.005mm +/-3% from an outlet of the finishing mill: the foil rolling speed is 600-700 m/min; the surface roughness of the roller is 0.06 um;7) cutting processCutting the aluminum foil with the thickness of 2 x 0.005mm +/-3% of the finished product by a cutting machine;the inlet tension is: 3.0-4.0 Kg/mm of the first pass24.0-5.5 Kg/mm for the second pass24.0-5.5 Kg/mm for the third pass24.0-5.5 Kg/mm for the fourth pass2(ii) a The outlet tension is: 3.2-4.5 Kg/mm for the first pass2The second pass is 3.2 to 4.5Kg/mm23.2 to 4.5Kg/mm for the third pass23.8-4.2 Kg/mm for the fourth pass2；The rolling force is as follows: the first pass is 90-140T, the second pass is 110-160T, the third pass is 170-210T, and the fourth pass is 190-240T;the oil temperature is as follows: the temperature of the first pass is 30-45 ℃, the temperature of the second pass is 30-45 ℃, the temperature of the third pass is 35-50 ℃, and the temperature of the fourth pass is 40-50 ℃;in the foil rolling process of the steps 2), 3), 4) and 6), cooling lubricating oil is adopted, wherein the cooling lubricating oil contains an additive, and the additive is a mixture of an alcohol additive, an ester additive and an acid additive;the additive in the step 2) accounts for 6.91 to 8.93 percent of the cooling lubricating oil; in the steps 3) and 4), the additive accounts for 6.61-8.63% of the cooling lubricating oil; the additive accounts for 6.9-8.92% of the cooling lubricating oil in the step 6), and the percentage is mass percent.
- 2. The 4-pass rolling method of 0.005mm thick aluminum foil according to claim 1, wherein the alcohol additive is lauryl alcohol, the ester additive is butyl stearate, and the acid additive is lauric acid.
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| CN110639951B (en) * | 2019-09-23 | 2021-02-12 | 江苏大亚铝业有限公司 | Method for preventing annealing heat drum on surface of double-zero aluminum foil |
| CN111041389A (en) * | 2019-12-10 | 2020-04-21 | 山东德利铝业科技有限公司 | 0.005-0.0054mm ultrathin aluminum foil and preparation method thereof |
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| CN111957744A (en) * | 2020-07-27 | 2020-11-20 | 上海神火铝箔有限公司 | Rolling method of ultra-wide and ultra-thin aluminum foil |
| CN111922080A (en) * | 2020-08-10 | 2020-11-13 | 上海神火铝箔有限公司 | Method for improving aluminum foil yield based on multiple times of lap rolling |
| CN112355053A (en) * | 2020-10-09 | 2021-02-12 | 烟台东海铝箔有限公司 | Novel process for efficiently producing double-zero aluminum foil |
| CN112355052A (en) * | 2020-10-09 | 2021-02-12 | 烟台东海铝箔有限公司 | Method for solving unilateral stickiness after annealing of sleeve-cut aluminum foil |
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