CN111549304B - Method for improving double-zero aluminum foil annealing heat drum - Google Patents
Method for improving double-zero aluminum foil annealing heat drum Download PDFInfo
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- CN111549304B CN111549304B CN202010507013.3A CN202010507013A CN111549304B CN 111549304 B CN111549304 B CN 111549304B CN 202010507013 A CN202010507013 A CN 202010507013A CN 111549304 B CN111549304 B CN 111549304B
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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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Abstract
The invention belongs to the field of aluminum material processing, and particularly relates to a method for improving annealing hot drum of a double-zero aluminum foil. The method has low investment and obvious effect, folds and density of the outer ring of the slitting coil are greatly reduced through special parameters, namely a heat isolating layer is formed on the outer ring of the aluminum foil coil, and the generation of annealing heat drums can be obviously reduced.
Description
Technical Field
The invention belongs to the field of aluminum material processing, and particularly relates to a method for improving a double-zero aluminum foil annealing heat drum.
Background
With the progress of the industrial foundation and technology of China, China has become a major country and a strong country for aluminum processing at present, and aluminum foils are also widely applied to industries such as food packaging, electric power, heat insulation, communication, batteries and the like.
The basic processing flow of the aluminum foil comprises the working procedures of rough and medium rolling, finish rolling, slitting, annealing and packaging, 1 or more bar marks are easy to appear on the foil surface of the aluminum foil, particularly double-zero aluminum foil in the annealing process, and the phenomenon is called as annealing hot drum in the industry. The downstream customers of the aluminum foil with the annealing hot drum cannot use the aluminum foil, so that the aluminum foil needs to be removed during packaging after the annealing hot drum appears, the annealing hot drum not only seriously affects the production efficiency and the yield of the aluminum foil, but also often affects delivery because the aluminum foil is short in length after the annealing hot drum is removed.
The average yield (yield) of various aluminum foil manufacturers is generally about 1% due to the problem of the annealing hot drum in the aluminum foil processing process, and the yield of products with the thickness of 0.006mm, the length of over 30000m and the width of over 1200mm is affected by the hot drum by 5% or more. The investment of each manufacturer for improving the problem of the aluminum foil hot drum is large, and many measures have great influence on the efficiency after implementation. When the thickness of the aluminum foil coil is thinner, the meter number is longer, and the width is wider, the problem of the annealing hot drum is more serious, and the influence on the production of aluminum foil enterprises is larger.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for improving the double-zero aluminum foil annealing heat drum, the method has low investment and obvious effect, folds and density of the outer ring of the slitting coil are greatly reduced through special parameters, namely, a heat isolating layer is formed on the outer ring of the aluminum foil coil, and the generation of the annealing heat drum can be obviously reduced.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for improving dual-zero aluminum foil annealing heat drum includes regulating down the pressing pressure, supporting pressure and tension of up-and-down coiling of splitting machine during splitting of aluminum foil coil, continuously winding lengthened aluminum foil on aluminum foil coil to generate wrinkles when lengthened aluminum foil is wound, and annealing.
Further, the length of the lengthened aluminum foil is 200-400 meters.
Furthermore, the lengthened aluminum foil is removed after annealing and packaging.
Further, the flattening pressure of the upper and lower coiling of the splitting machine is adjusted to 10% -30% of the original flattening pressure.
Further, the support pressure of the upper coiling and the lower coiling of the splitting machine is adjusted to be 5% -20% of the original support pressure.
Furthermore, the tension of the upper and lower coiling of the splitting machine is adjusted to 10% -30% of the original tension.
Further, the flattening pressure of the coiling on the splitting machine is 1800N/MM2Adjusted to 200N/MM2(ii) a The flattening pressure of the lower coiling is 1800N/MM2Adjusted to 300N/MM2。
Further, the support pressure of the winding on the splitting machine is 2600N/MM2Adjusted to 300N/MM2(ii) a The support pressure of the lower coiling is 2600N/MM2Adjusted to 200N/MM2。
Further, the tension of the winding on the splitting machine is adjusted to 5N/M from 32N/M; the tension of the lower winding was adjusted from 32N/M to 5N/M.
Furthermore, when the length of the aluminum foil reaches 12000-62000 m, parameters of the splitting machine are adjusted.
Has the advantages that:
the invention aims to solve the problem of annealing hot drums of aluminum foils, particularly double-zero aluminum foils. The method comprises the steps of continuously winding 200-400 m of lengthened aluminum foil after the aluminum foil roll reaches the length required by a customer in the slitting process, greatly adjusting the production parameters (speed, coiling tension and coiling pressure) of the slitting machine while winding the lengthened aluminum foil, enabling the lengthened aluminum foil to generate wrinkles when wound, and greatly reducing the surface coiling density of the aluminum foil roll. In the annealing process, the aluminum foil coil which is lengthened and wound to generate wrinkles is equivalent to a heat insulation layer for heat transfer formed on the surface of the aluminum foil, so that the problem of hot drum caused by rapid heating of the aluminum foil in the annealing process is greatly improved.
The method has low investment and obvious effect, folds and density of the outer ring of the slitting coil are greatly reduced through special parameters, namely a heat isolating layer is formed on the outer ring of the aluminum foil coil, and the generation of annealing heat drums can be obviously reduced.
The hot-bulging phenomenon of the double-zero aluminum foil can be greatly improved, and particularly, the improvement effect of the double-zero aluminum foil is more effective than that of other measures for products with the thickness of less than 0.0065mm and the number of meters of more than 36000 meters.
The invention does not need to add other equipment, equipment or purchase auxiliary materials, and can reduce other cost investment for improving the hot drum for enterprises.
The lengthened corrugated aluminum foil which is removed during packaging can be recycled and returned to the furnace for continuous recycling, and the cost investment of an enterprise is further improved.
Detailed Description
The following examples further describe embodiments of the present invention in detail. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the actual production, different tests are specially selected for comparison in the specification of the easily-appearing hot drum for verifying the effect.
The splitting machine used in the scheme is a German KAMPF-800 type splitting machine.
1. Slitting production uses normal parameters to produce aluminum foil rolls to customer specified lengths (or roll diameters).
2. The pressure of a flattening roller for coiling on a splitting machine is adjusted to be 200N/MM2(ii) a The pressure of the upper supporting roller is 300N/MM2。
3. The pressure of a flattening roller for coiling under the splitting machine is adjusted to be 300N/MM2(ii) a The pressure of the lower supporting roller is 200N/MM2。
4. Rapidly adjusting the coiling tension on the splitting machine to be 5N/M; the lower winding tension was 5N/M.
5. After the pressure and tension of the up-and-down coiling are adjusted, the aluminum foil generates large-area wrinkles during winding, and after the pressure and tension are gathered and reduced, the winding density of the aluminum foil is synchronously reduced, and a large amount of air is increased between the layers of the aluminum foil.
6. If the effect of the wrinkles produced is not significant, the slitting speed can be increased and the take-up pressure and tension can be further reduced.
7. And (4) lengthening and winding the corrugated aluminum foil of 200-400 meters according to the thickness, width and length of the produced aluminum foil.
8. And after the aluminum foil roll with the wrinkles is cut, annealing by using a normal annealing process.
9. The surface of the annealed aluminum foil is wrinkled and obviously inconsistent with the normally coiled aluminum foil seen from the end face, the outer ring of the wrinkled aluminum foil is black and uneven, and a lengthened wrinkle layer of 200-400 m with the lengthened surface is removed by using a cutter knife during packaging.
Example one
Production format thickness width length 0.0063mm 1420mm 48200m order total 52 rolls, of which 26 rolls were produced longer using the method described in the present invention, and in addition 26 rolls were not lengthened.
Parameter comparison table during slitting
Hot drum condition comparison table during packaging
By comparing the lengthening of the comparative aluminum coil of the example I with the lengthening of the comparative aluminum coil, the proportion of hot drum production of the aluminum foil produced by the method of the invention is 81.2 percent lower, and the final scrap rate is 5.9 percent lower.
Example two
Production specification thickness width length 0.006mm 1240mm 36000m orders for 60 rolls, of which 28 rolls were produced longer using the method described in the present invention and 32 rolls were produced longer using normal parameters.
Hot drum condition comparison table during packaging
The comparison between the normal parameters of the second example and the parameter lengthening of the method proves that the aluminum foil produced by the method has 79.5 percent lower hot drum generation ratio and 3.2 percent lower final scrap rate.
Example three
Production specification thickness width length 0.006mm 1040mm 12200m order 126 rolls, of which 40 rolls were produced longer using the method described herein, 40 rolls were produced longer using the normal parameters, and 46 rolls were not lengthened.
Parameter comparison table during slitting
Hot drum condition comparison table during packaging
Comparison of example three demonstrates that the aluminum foil produced by the method of the present invention is minimal in both the rate of occurrence of hot drums and the production of final scrap.
Claims (7)
1. A method for improving double-zero aluminum foil annealing heat drum is characterized in that in the process of cutting an aluminum foil roll, the flattening pressure, the supporting pressure and the tension of the upper and lower coiling of a cutting machine are reduced, a lengthened aluminum foil is continuously wound on the aluminum foil roll, so that wrinkles are generated when the lengthened aluminum foil is wound, and then annealing is performed; the flattening pressure of the upper coiling and the lower coiling of the splitting machine is adjusted to 10% -30% of the original flattening pressure; adjusting the support pressure of the upper and lower coiling of the splitting machine to 5-20% of the original support pressure; the tension of the upper and lower coiling of the splitting machine is adjusted to 10% -30% of the original tension.
2. The method for improving the annealing hot drum of the double-zero aluminum foil as claimed in claim 1, wherein the length of the lengthened aluminum foil is 200-400 m.
3. The method of improving dual-zero aluminum foil annealing heat drum of claim 1, wherein the elongated aluminum foil is removed during packaging after annealing.
4. The method for improving dual-zero aluminum foil annealing heat drum as claimed in claim 1, wherein the flattening pressure of the coil on the splitting machine is 1800N/MM2Adjusted to 200N/MM2(ii) a The flattening pressure of the lower coiling is 1800N/MM2Adjusted to 300N/MM2。
5. The method for improving dual-zero aluminum foil annealing hot drum as claimed in claim 1, wherein the supporting pressure of the winding on the splitting machine is 2600N/MM2Adjusted to 300N/MM2(ii) a The support pressure of the lower coiling is 2600N/MM2Adjusted to 200N/MM2。
6. The method for improving double-zero aluminum foil annealing hot drum as claimed in claim 1, wherein the tension of the coil on the splitting machine is adjusted from 32N/M to 5N/M; the tension of the lower winding was adjusted from 32N/M to 5N/M.
7. The method for improving dual-zero aluminum foil annealing hot drum as claimed in claim 1, wherein the adjustment of the parameters of the splitting machine is performed after the aluminum foil length reaches 12000-62000 m.
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| CN112122381B (en) * | 2020-09-11 | 2022-09-06 | 铭尔金属(苏州)有限公司 | Aluminum coiled strip leveling process |
| CN115125459B (en) * | 2022-07-30 | 2023-12-29 | 神隆宝鼎新材料有限公司 | Method for inhibiting double-zero foil annealing hot bulging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104858233A (en) * | 2015-06-08 | 2015-08-26 | 江苏丰源铝业有限公司 | Double-zero aluminum foil thickness difference rolling method |
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| JPH07145458A (en) * | 1993-11-19 | 1995-06-06 | Nippon Foil Mfg Co Ltd | Coiled article of metallic foil |
| JP3820010B2 (en) * | 1997-09-18 | 2006-09-13 | 昭和電工株式会社 | Method for cooling aluminum foil annealing coil |
| JP2006207034A (en) * | 2006-04-24 | 2006-08-10 | Showa Denko Kk | Method for producing aluminum foil annealed coil |
| CN102465243B (en) * | 2010-11-12 | 2013-07-17 | 大亚科技股份有限公司 | Method for preventing double-zero aluminum foil from rebounding after tapping off |
| CN103589976B (en) * | 2013-11-26 | 2016-04-20 | 江苏大亚铝业有限公司 | The method of thick stick has been prevented after a kind of double-zero aluminum foil annealing |
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| CN104858233A (en) * | 2015-06-08 | 2015-08-26 | 江苏丰源铝业有限公司 | Double-zero aluminum foil thickness difference rolling method |
Non-Patent Citations (1)
| Title |
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| 《铝箔皱折缺陷的分析》;贾凌秋;《轻合金加工技术》;20071031;第35卷(第10期);全文 * |
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