CN102560294B - Annealing process for aluminum foil - Google Patents
Annealing process for aluminum foil Download PDFInfo
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- CN102560294B CN102560294B CN201010608004.XA CN201010608004A CN102560294B CN 102560294 B CN102560294 B CN 102560294B CN 201010608004 A CN201010608004 A CN 201010608004A CN 102560294 B CN102560294 B CN 102560294B
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Abstract
The invention relates to an annealing process for single/double zero foil, in particular to an annealing process for single/double zero foil of over 700 millimeters. In the technical scheme, the annealing process for aluminum foil comprises the following steps of: heating at a speed of 2 to 12 DEG C/hour; keeping the temperature of between 180 and 210 DEG C for 50 to 140 hours; and cooling at a speed of 0.5 to 12 DEG C/hour. The annealing process has the advantages that: pressure stress is eliminated by controlling the heating speed and adjusting heat-insulating temperature and heat-insulating time to reduce the probability of bulging; and the annealing time is shortened on the premise of reducing the bulging to ensure the tensile strength of the aluminum foil. According to the annealing process, by controlling the cooling speed of different sections, the bulging is controlled due to the low-speed cooling of a high-temperature section, and the production efficiency is improved due to the high-speed cooling of a low-temperature section.
Description
Technical field
The present invention relates to the annealing technology of single/bis-zero paper tinsel, specially refer to the annealing technology of list/bis-zero paper tinsel more than 700mm.
Background technology
Aluminium foil, especially single double-zero aluminum foil, is widely used in the wrapping material of food, beverage, cigarette, medicine, family daily necessity etc.Particularly aluminium foil and plastics and paper compound after, the heat sealability of the intensity of the shielding of aluminium foil and paper, plastics is combined together, further improved as the necessary shielding properties to steam, air, ultraviolet ray and bacterium etc. of wrapping material.Therefore, the aluminium foil general requirement of these purposes possesses following performance: 1. the surface with cleaning, light; 2. there is certain tensile strength, to improve aluminium foil and plastics and paper composite efficiency.
In industrial production, the complete aluminium foil surface of just rolling is more or less all with ROLLING OIL, but aluminium foil strip is oily, is unfavorable for follow-up compound of aluminium foil, and aluminium foil, as wrapping material, if band is oily, will pollute contracted for fixed output quotas product simultaneously.The main purpose of the finished products of aluminium foil is for eliminating the ROLLING OIL of aluminium foil.In aluminum foil finished products process, also there is the change of aluminium foil mechanical property, temperature is higher, annealing time is longer, the mechanical property of aluminum foil finished product is lower, and therefore, the selection of annealing temperature and annealing time is very large to the final Effect on Mechanical Properties of the removal of ROLLING OIL and finished product.In annealing process, if annealing time is oversize or temperature is too high, on the one hand, the tensile strength of aluminium foil be can affect, aluminium foil and plastics and paper composite efficiency reduced, on the other hand, aluminium foil internal-external temperature difference is excessive, outside surface aluminium foil expands with heat and contract with cold inhomogeneous, adds the impact of ROLLING OIL volatilization, causes aluminium foil surface to occur heat drum, heat drum is also named barring, or be drum, or be thick stick, the aluminium that has played hot drum twists in follow-up recombination process, can not be open and flat preferably, affected with plastics and paper compoundly, therefore, general all the aluminium volume that plays heat drum has been pulled down.The hot thickness rousing can surpass 30mm when serious, causes comprehensive scrap rate more than 1%, more seriously can cause the degradation of aluminium volume, a lot of to the Efficiency of Aluminum Foil Factory.If temperature rise rate is too slow, annealing time increases, and on the one hand, reduces production efficiency, has increased energy consumption, on the other hand, too slow temperature rise rate, the temperature difference of aluminium foil inside and outside can not eliminating, offsets having little significance of heat extraction drum.Therefore it is crucial controlling annealing time, and will control the key of annealing time well, is to control the height of temperature and the speed of the cooling that heats up well.The patent No. is that CN200810234535.X document discloses a kind of anneal cargo jack preventing method for double-zero aluminum foil finished product, the heating-cooling time shortening in annealing furnace is played to certain effect, but use the aluminium volume after the method annealing still to have heat drum, and cost of investment and the running cost of drying room have been increased, total annealing time of simultaneously annealing does not reduce, also have certain increasing, therefore, this method does not obtain general popularization.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of by controlling temperature and time to reduce the hot annealing process that rouses, strengthens aluminium foil tensile strength of aluminum foil annealing.
For addressing the above problem, the technical solution used in the present invention is:
An annealing process for aluminum foil, comprises intensification, insulation, cooling three phases, in the temperature rise period, temperature rise rate is 2 ℃-12 ℃/h, and at holding stage, holding temperature is 180 ℃-210 ℃, soaking time is 50 hours-140 hours, and at temperature-fall period, rate of temperature fall is 0.5 ℃-12 ℃/h.
Preferably, in the temperature rise period, temperature rise rate is 2 ℃-5 ℃/h, and at holding stage, holding temperature is 180 ℃-190 ℃, and soaking time is 50 hours-140 hours, and at temperature-fall period, rate of temperature fall is 0.5 ℃-4 ℃/h.
Preferably, in the temperature rise period, temperature rise rate is 5 ℃-9 ℃/h, and at holding stage, holding temperature is 190 ℃-200 ℃, and soaking time is 50 hours-140 hours, and at temperature-fall period, rate of temperature fall is 4 ℃-8 ℃/h.
Preferably, in the temperature rise period, temperature rise rate is 9 ℃-12 ℃/h, and at holding stage, holding temperature is 200 ℃-210 ℃, and soaking time is 50 hours-140 hours, and at temperature-fall period, rate of temperature fall is 8 ℃-12 ℃/h.
Preferably, rate of temperature fall when temperature is down to 150 ℃ from holding temperature is 0.5 ℃-6 ℃/h, and rate of temperature fall when temperature is down to room temperature from 150 ℃ is 3 ℃-12 ℃/h.
The invention has the beneficial effects as follows: the speed heating up by control is adjusted holding temperature and soaking time, eliminate stress, thereby reduce the probability that causes heat drum, reducing under the prerequisite of heat drum, shortened annealing time, thereby guaranteed the tensile strength of aluminium foil.The present invention also passes through to control the rate of temperature fall of different sections by the present invention, the generation of hot drum has been controlled in the cooling at a slow speed of high temperature section on the one hand, and on the other hand, low-temperature zone is faster lowered the temperature and improved production efficiency.
Embodiment
In following embodiment, the thickness of the aluminium foil of getting is 0.01mm-0.09mm and 0.001mm-0.009mm.
Embodiment 1
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 2 ℃/h, and at holding stage, holding temperature is 180 ℃, and soaking time is 140 hours, and at temperature-fall period, rate of temperature fall is 0.5 ℃/h.
Embodiment 2
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 3 ℃/h, and at holding stage, holding temperature is 183 ℃, and soaking time is 130 hours, and at temperature-fall period, rate of temperature fall is 1 ℃/h.
Embodiment 3
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 4 ℃/h, and at holding stage, holding temperature is 186 ℃, and soaking time is 120 hours, and at temperature-fall period, rate of temperature fall is 2 ℃/h.
Embodiment 4
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 5 ℃/h, and at holding stage, holding temperature is 189 ℃, and soaking time is 110 hours, and at temperature-fall period, rate of temperature fall is 3 ℃/h.
Embodiment 5
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 6 ℃/h, and at holding stage, holding temperature is 192 ℃, and soaking time is 100 hours, and at temperature-fall period, rate of temperature fall is 4 ℃/h.
Embodiment 6
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 7 ℃/h, and at holding stage, holding temperature is 195 ℃, and soaking time is 90 hours, and at temperature-fall period, rate of temperature fall is 5 ℃/h.
Embodiment 7
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 8 ℃/h, and at holding stage, holding temperature is 198 ℃, and soaking time is 90 hours, and at temperature-fall period, rate of temperature fall is 6 ℃/h.
Embodiment 8
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 9 ℃/h, and at holding stage, holding temperature is 201 ℃, and soaking time is 70 hours, and at temperature-fall period, rate of temperature fall is 7 ℃/h.
Embodiment 9
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 10 ℃/h, and at holding stage, holding temperature is 204 ℃, and soaking time is 60 hours, and at temperature-fall period, rate of temperature fall is 8 ℃/h.
Embodiment 10
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 11 ℃/h, and at holding stage, holding temperature is 207 ℃, and soaking time is 50 hours, and at temperature-fall period, rate of temperature fall is 9 ℃/h.
Embodiment 11
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 12 ℃/h, and at holding stage, holding temperature is 210 ℃, and soaking time is 65 hours, and at temperature-fall period, rate of temperature fall is 10 ℃/h.
Embodiment 12
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 3 ℃/h, and at holding stage, holding temperature is 210 ℃, and soaking time is 100 hours, and at temperature-fall period, rate of temperature fall is 11 ℃/h.
Embodiment 13
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 5 ℃/h, and at holding stage, holding temperature is 201 ℃, and soaking time is 80 hours, and at temperature-fall period, rate of temperature fall is 12 ℃/h.
Embodiment 14
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 10 ℃/h, and at holding stage, holding temperature is 192 ℃, and soaking time is 120 hours, and at temperature-fall period, rate of temperature fall is 2 ℃/h.
Embodiment 15
An annealing process for aluminum foil, comprises intensification, insulation, and cooling three phases, in the temperature rise period, temperature rise rate is 12 ℃/h, and at holding stage, holding temperature is 189 ℃, and soaking time is 60 hours, and at temperature-fall period, rate of temperature fall is 6 ℃/h.
Claims (5)
1. an annealing process for aluminum foil, comprise intensification, insulation, cooling three phases, is characterized in that: in the temperature rise period, temperature rise rate is 2 ℃-12 ℃/h, at holding stage, holding temperature is 180 ℃-210 ℃, and soaking time is 50 hours-140 hours, at temperature-fall period, rate of temperature fall is 0.5 ℃-12 ℃/h.
2. a kind of annealing process for aluminum foil according to claim 1, is characterized in that: in the temperature rise period, temperature rise rate is 2 ℃-5 ℃/h, at holding stage, holding temperature is 180 ℃-190 ℃, and soaking time is 50 hours-140 hours, at temperature-fall period, rate of temperature fall is 0.5 ℃-4 ℃/h.
3. a kind of annealing process for aluminum foil according to claim 1, is characterized in that: in the temperature rise period, temperature rise rate is 5 ℃-9 ℃/h, at holding stage, holding temperature is 190 ℃-200 ℃, and soaking time is 50 hours-140 hours, at temperature-fall period, rate of temperature fall is 4 ℃-8 ℃/h.
4. a kind of annealing process for aluminum foil according to claim 1, is characterized in that: in the temperature rise period, temperature rise rate is 9 ℃-12 ℃/h, at holding stage, holding temperature is 200 ℃-210 ℃, and soaking time is 50 hours-140 hours, at temperature-fall period, rate of temperature fall is 8 ℃-12 ℃/h.
5. according to a kind of annealing process described in arbitrary claim in claim 1 to 4, it is characterized in that: rate of temperature fall when temperature is down to 150 ℃ from holding temperature is 0.5 ℃-6 ℃/h, rate of temperature fall when temperature is down to room temperature from 150 ℃ is 3 ℃-12 ℃/h.
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| CN201010608004.XA CN102560294B (en) | 2010-12-28 | 2010-12-28 | Annealing process for aluminum foil |
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| CN201010608004.XA CN102560294B (en) | 2010-12-28 | 2010-12-28 | Annealing process for aluminum foil |
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| CN102560294B true CN102560294B (en) | 2014-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104561671A (en) * | 2014-12-29 | 2015-04-29 | 镇江鼎胜铝业股份有限公司 | Method for preparing high-elongation medical aluminum foil from cast rolled stock |
| CN106282863B (en) * | 2016-09-08 | 2018-04-24 | 江苏大亚铝业有限公司 | The food packaging aluminium foil high temperature negative pressure anneal technique of high-peeling strength |
| CN107058919A (en) * | 2017-03-27 | 2017-08-18 | 江苏大亚铝业有限公司 | The annealing process of milk pack aluminium foil |
| CN107904389A (en) * | 2017-11-20 | 2018-04-13 | 福州大学 | A kind of method for annealing of copper niobium composite wire |
| CN110629136A (en) * | 2019-10-28 | 2019-12-31 | 江苏大亚铝业有限公司 | Annealing furnace equipment and using method thereof |
| CN113151756A (en) * | 2021-04-19 | 2021-07-23 | 广西柳州银海铝业股份有限公司 | Method for eliminating annealing wrinkling defect of cold-rolled aluminum coil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1546716A (en) * | 2003-12-02 | 2004-11-17 | 北京科技大学 | Electrolytic capacitor aluminum foil continuous annealing process |
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| JP4705181B2 (en) * | 2009-04-21 | 2011-06-22 | 昭和電工株式会社 | Method for producing aluminum foil for electrolytic capacitor electrode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1546716A (en) * | 2003-12-02 | 2004-11-17 | 北京科技大学 | Electrolytic capacitor aluminum foil continuous annealing process |
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Address after: Taoyuan County in Hunan province Changde city 415700 disk town Chuangyuan Industrial Park Patentee after: Suntown Technology Group Corporation Address before: Venus Road 410200 in Hunan province Changsha No. 109 Sheng Tong Industrial Park Development Division Patentee before: Hunan Shengtong Technology Group Co., Ltd. |