WO2019214243A1 - 1100 alloy aluminum foil for lithium battery and manufacturing method therefor - Google Patents

1100 alloy aluminum foil for lithium battery and manufacturing method therefor Download PDF

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Publication number
WO2019214243A1
WO2019214243A1 PCT/CN2018/122457 CN2018122457W WO2019214243A1 WO 2019214243 A1 WO2019214243 A1 WO 2019214243A1 CN 2018122457 W CN2018122457 W CN 2018122457W WO 2019214243 A1 WO2019214243 A1 WO 2019214243A1
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Prior art keywords
aluminum foil
lithium battery
rolling
alloy
thickness
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PCT/CN2018/122457
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French (fr)
Chinese (zh)
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张全成
袁婷
章建华
吴永新
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江苏常铝铝业股份有限公司
常熟理工学院
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Publication of WO2019214243A1 publication Critical patent/WO2019214243A1/en

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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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • 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

Definitions

  • the present application relates to an aluminum foil and a method of manufacturing the same, and more particularly to a 1100 alloy aluminum foil for a lithium battery and a method of manufacturing the same.
  • the aluminum foil for lithium battery requires high dimensional accuracy, a clean surface, uniformity, and scratch-free defects, balanced plate shape, extremely thin thickness, and high tensile strength and elongation.
  • the aluminum foil for lithium battery is currently used as the pure aluminum alloy grades such as 1070, 1235 and 1200. The thickness is usually 12 to 25 ⁇ m and is delivered in the H18 state. The tensile strength is generally only close to 200 MPa, and the elongation of the high elongation product is high.
  • the surface of the aluminum foil is more oily, the surface wetting tension can only be maintained within 30 dyne, and the yield is low.
  • the aluminum foil for lithium batteries is gradually thinned, the need for tensile strength, elongation and surface quality is also increased.
  • the aluminum foil for the existing lithium battery can satisfy the requirement of thinning while satisfying the aluminum content of 99%, and therefore many products are currently added with alloying elements to improve the mechanical properties.
  • the aluminum foil products for batteries have higher requirements on electrical conductivity due to the particularity of their performance requirements. At present, the strengthening mechanism of aluminum alloy solid solution, fine crystal and work hardening is harmful to its electrical conductivity.
  • the object of the present application is to provide a 1100 alloy aluminum foil for a lithium battery, which can effectively improve tensile strength and elongation while maintaining high electrical conductivity while thinning aluminum foil for lithium battery. And high surface quality.
  • Another object of the present application is to provide a method for producing a 1100 alloy aluminum foil for a lithium battery.
  • a 1100 alloy aluminum foil for a lithium battery comprises the following mass percentage components: Fe: 0.4 to 0.5%, Si: 0.1 to 0.2%, Cu: 0.1 to 0.15%, Ti: 0.01 to 0.02%, Sc: 0.03 to 0.07%, Ce: 0.03 to 0.07%, Mn: ⁇ 0.01%, Mg: ⁇ 0.005%, Zn: ⁇ 0.005%, and Al ⁇ 99.1%, wherein Fe+Si ⁇ 0.65%, Fe/ Si is 2.0 to 4.0.
  • the 1100 alloy aluminum foil for lithium battery has a thickness of 0.008 to 0.015 mm, a tensile strength of 220 to 260 MPa, and an elongation of 3 to 5%.
  • the invention relates to a method for manufacturing a 1100 alloy aluminum foil for a lithium battery, comprising the following process steps: (1) smelting: adding raw materials of each element to a melting furnace according to the composition of the alloy, and smelting to obtain an alloy ingot; (2) Hot rolling: after milling, the alloy ingot is hot rolled to obtain a hot rolled billet; (3) rough rolling: the hot rolled billet described in the step (2) is placed on a cold rolling mill for cold rough rolling to obtain a coarse (4) recrystallization annealing: intermediate recrystallization annealing of the rough rolling billet to obtain a recrystallized and annealed rolled sheet; (5) medium rolling: further cold rolling of the recrystallization annealing sheet Obtaining an aluminum foil roll; (6) stress relief annealing: performing intermediate stress relief annealing on the intermediate rolled aluminum foil roll; (7) performing cold finishing rolling on the intermediate stress relief annealed aluminum foil roll to a lithium battery The required thickness of the aluminum foil is then cut into aluminum foil
  • the smelting preparation conditions are: a smelting temperature of 750 to 780 ° C, a refining temperature of 740 to 760 ° C, and a casting temperature of 695 to 705 ° C.
  • the thickness of the hot rolled billet is 6.5 to 8.5 mm.
  • the rough rolling stock has a thickness of 2.0 to 2.8 mm.
  • the temperature during recrystallization annealing is 400 to 430 ° C, and the holding time is 9 to 12 hours.
  • the thickness of the aluminum foil roll is 0.4 to 0.6 mm.
  • the temperature during the stress relief annealing is 210 to 230 ° C, and the holding time is 12 to 15 hours.
  • the application has the advantages that the present application controls the Fe and Si contents, so that the second phase is mainly in the form of ⁇ (Al 3 Fe 3 Si) phase, the addition has a certain strengthening effect, and the conductivity is It damages the smaller Cu element and increases the two rare earth elements, Sc and Ce.
  • the rare earth-containing second phase Al 3 Sc and Al 11 Ce 3 can strengthen the grain boundary and inhibit the specific Fe/Si content ratio.
  • the recrystallized grain grows and improves the high temperature stability of the foil.
  • the rare earth element effectively improves the existence and distribution of Fe and Si elements, and inhibits the hard and brittle ⁇ (Al 9 Fe 2 Si 2 ) phase and the Fe 3 Al phase.
  • the formation of the pinhole of the finished product is greatly reduced, thereby significantly improving the mechanical properties, electrical conductivity and yield of the 1100 series aluminum foil.
  • the finished product has a tensile strength of 240 to 260 MPa, an elongation of 3.5% to 5%, a conductivity of 32 to 35 Ms/m, and a surface wetting tension of ⁇ 30 dyne.
  • the 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.5%, Si: 0.15%, Cu: 0.1%, Ti: 0.01%, Sc: 0.03%, Ce : 0.04%, Mn: 0.007%, Mg: 0.005%, Zn: 0.002%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 760 ° C, and the refining temperature is 740 ° C. The casting temperature is 700 °C.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.6 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 10 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.6 mm.
  • the 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.4%, Si: 0.1%, Cu: 0.12%, Ti: 0.01%, Sc: 0.03%, Ce : 0.07%, Mn: 0.005%, Mg: 0.003%, Zn: 0.003%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 765 ° C, and the refining temperature is 760 ° C. The casting temperature is 705 °C.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet, and the thickness was controlled to 2.5 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 400 ° C and a holding time of 9 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm.
  • the 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.4%, Si: 0.1%, Cu: 0.13%, Ti: 0.015%, Sc: 0.07%, Ce : 0.03%, Mn: 0.006%, Mg: 0.003%, Zn: 0.005%, and the rest is Al.
  • the raw materials of each element are added to a melting furnace to obtain an alloy ingot, the melting temperature is 750 ° C, and the refining temperature is 750 ° C.
  • the casting temperature is 705 °C.
  • Hot rolling After milling the surface, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to 6.5 mm.
  • Rough rolling The hot rolled billet is placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet, and the thickness is controlled to be 2.2 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 430 ° C and a holding time of 10 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.4 mm.
  • the 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.44%, Si: 0.18%, Cu: 0.15%, Ti: 0.018%, Sc: 0.05%, Ce : 0.05%, Mn: 0.007%, Mg: 0.003%, Zn: 0.002%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, and the refining temperature is 740 ° C. The casting temperature was 695 °C.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm.
  • the 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.48%, Si: 0.12%, Cu: 0.12%, Ti: 0.02%, Sc: 0.04%, Ce : 0.05%, Mn: 0.008%, Mg: 0.002%, Zn: 0.004%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, and the refining temperature is 740 ° C. The casting temperature was 695 °C.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm.
  • the 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.5%, Si: 0.13%, Cu: 0.12%, Ti: 0.013%, Sc: 0.03%, Ce : 0.04%, Mn: 0.006%, Mg: 0.005%, Zn: 0.004%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, and the refining temperature is 740 ° C. The casting temperature was 695 °C.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm.
  • 1100 alloy aluminum foil is produced according to the following production process steps: (1) smelting: according to the mass percentage components: Fe: 0.5%, Si: 0.10%, Cu: 0.12%, Ti: 0.013%, Sc: 0.03%, Ce: 0.04% Mn: 0.006%, Mg: 0.005%, Zn: 0.004%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, the refining temperature is 740 ° C, and the casting temperature It is 695 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet having a thickness of 7.0 mm.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm.
  • 1100 alloy aluminum foil is produced according to the following production process steps: (1) smelting: according to mass percentage components: Fe: 0.5%, Si: 0.15%, Cu: 0.1%, Ti: 0.01%, Sc: 0.01%, Ce: 0.01% Mn: 0.007%, Mg: 0.005%, Zn: 0.002%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 760 ° C, the refining temperature is 740 ° C, and the casting temperature It is 700 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to be 8.0 mm.
  • Rough rolling The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.6 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 10 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.6 mm.
  • 1100 alloy aluminum foil is produced according to the following production process steps: (1) smelting: according to the mass percentage components: Fe: 0.3%, Si: 0.2%, Cu: 0.13%, Ti: 0.015%, Sc: 0.07%, Ce: 0.03% Mn: 0.006%, Mg: 0.003%, Zn: 0.005%, and the rest is Al. The raw materials of each element are added to the melting furnace to obtain an alloy ingot, the melting temperature is 750 ° C, the refining temperature is 750 ° C, and the casting temperature is obtained. It is 705 °C. (2) Hot rolling: After milling the surface, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to 6.5 mm.
  • Rough rolling The hot rolled billet is placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet, and the thickness is controlled to be 2.2 mm.
  • Recrystallization annealing Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 430 ° C and a holding time of 10 hours.
  • Medium rolling The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.4 mm.

Abstract

Disclosed is a 1100 alloy aluminum foil for a lithium battery, characterized in comprising the following components in mass percent: Fe: 0.4%-0.5％, Si: 0.1%-0.2％, Cu: 0.1%-0.15％, Ti: 0.01%-0.02％, Sc: 0.03%-0.07％, Ce: 0.03%-0.07％, Mn: ≤ 0.01％, Mg: ≤ 0.005％, Zn: ≤ 0.005％ and Al: ≥ 99.2％, wherein Fe+Si ≤ 0.65％ and Fe/Si is 2.0-4.0. In the present application, by means of regulating and controlling the element ratio in the 1100 alloy, and at the same time using rare earth treatment, the yield and mechanical performance indexes of a highly conductive aluminum foil for a lithium battery are improved. A finished material product has a tensile strength up to 220-260 MPa, and at the same time has an elongation that can reach 3%-5%, an electric conductivity of 32-35 Ms/m, and a surface wetting tension ≥ 30 dynes.

Description

一种锂电池用1100合金铝箔及其制造方法1100 alloy aluminum foil for lithium battery and manufacturing method thereof
相关申请的交叉引用Cross-reference to related applications
本申请要求于2018年05月11日提交中国专利局的申请号为201810445755.0、名称为“一种锂电池用1100合金铝箔及其制造方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims priority to Chinese Patent Application No. 201810445755.0, entitled "A 1100 Alloy Aluminum Foil for Lithium Batteries and Its Manufacturing Method", filed on May 11, 2018, the entire contents of which are incorporated by reference. In this application.
技术领域Technical field
本申请涉及一种铝箔及其制造方法，更具体地说，涉及一种锂电池用1100合金铝箔及其制造方法。The present application relates to an aluminum foil and a method of manufacturing the same, and more particularly to a 1100 alloy aluminum foil for a lithium battery and a method of manufacturing the same.
背景技术Background technique
近年来我国新能源汽车产业发展迅速，而锂电池是新能源汽车发展的关键。随着电池技术的发展，特别是新能源汽车领域对锂电池提出了更高的要求，电池行业也对电池用铝箔提出了新的要求。这种铝箔要求尺寸精度高、表面干净、均匀并且无擦划伤等缺陷，板型平衡，厚度极薄，且具有高抗拉强度和延伸率。锂电池用铝箔目前使用较多的为1070、1235和1200等纯铝系合金牌号，常用厚度在12～25μm并以H18状态交货，抗拉强度普遍只有接近200MPa，高延伸率产品的延伸率也仅在2.5左右，且由于其材料较薄较软使铝箔表面带油量较大，表面润湿张力只能保持在30达因值内，成品率也较低。随着锂电池用铝箔逐渐减薄的趋势，其对抗拉强度、延伸率和表面质量需要也随之提高。而现有锂电池用铝箔在满足铝含量99％的同时其抗拉强度和延伸率不能满足变薄的需求，因此目前较多产品采取添加合金元素的方式提高其机械性能。但是，电池用铝箔产品由于其性能要求的特殊性，对导电率亦有较高要求。目前采取的铝合金固溶、细晶和加工硬化等强化机制均对其导电率有损害。In recent years, China's new energy automobile industry has developed rapidly, and lithium batteries are the key to the development of new energy vehicles. With the development of battery technology, especially in the field of new energy vehicles, higher requirements have been placed on lithium batteries, and the battery industry has also put forward new requirements for aluminum foil for batteries. This aluminum foil requires high dimensional accuracy, a clean surface, uniformity, and scratch-free defects, balanced plate shape, extremely thin thickness, and high tensile strength and elongation. The aluminum foil for lithium battery is currently used as the pure aluminum alloy grades such as 1070, 1235 and 1200. The thickness is usually 12 to 25 μm and is delivered in the H18 state. The tensile strength is generally only close to 200 MPa, and the elongation of the high elongation product is high. It is also only about 2.5, and because the material is thinner and softer, the surface of the aluminum foil is more oily, the surface wetting tension can only be maintained within 30 dyne, and the yield is low. As the aluminum foil for lithium batteries is gradually thinned, the need for tensile strength, elongation and surface quality is also increased. However, the aluminum foil for the existing lithium battery can satisfy the requirement of thinning while satisfying the aluminum content of 99%, and therefore many products are currently added with alloying elements to improve the mechanical properties. However, the aluminum foil products for batteries have higher requirements on electrical conductivity due to the particularity of their performance requirements. At present, the strengthening mechanism of aluminum alloy solid solution, fine crystal and work hardening is harmful to its electrical conductivity.
发明内容Summary of the invention
为了克服现有产品技术的不足，本申请的任务在于提供一种锂电池用1100合金铝箔，在减薄锂电池用铝箔的同时，有效提高了抗拉强度和延伸率，同时保持有高导电率和高表面质量。本申请的另一任务在于提供一种锂电池用1100合金铝箔的制造方法。In order to overcome the deficiencies of the prior art technology, the object of the present application is to provide a 1100 alloy aluminum foil for a lithium battery, which can effectively improve tensile strength and elongation while maintaining high electrical conductivity while thinning aluminum foil for lithium battery. And high surface quality. Another object of the present application is to provide a method for producing a 1100 alloy aluminum foil for a lithium battery.
本申请的技术方案是这样的，一种锂电池用1100合金铝箔，包含以下质量百分比组分：Fe：0.4～0.5％、Si：0.1～0.2％、Cu：0.1～0.15％、Ti：0.01～0.02％、Sc：0.03～0.07％、Ce：0.03～0.07％、Mn：≤0.01％、Mg：≤0.005％、Zn：≤0.005％以及Al≥99.1％，其中Fe+Si≤0.65％，Fe/Si为2.0～4.0。The technical solution of the present application is such that a 1100 alloy aluminum foil for a lithium battery comprises the following mass percentage components: Fe: 0.4 to 0.5%, Si: 0.1 to 0.2%, Cu: 0.1 to 0.15%, Ti: 0.01 to 0.02%, Sc: 0.03 to 0.07%, Ce: 0.03 to 0.07%, Mn: ≤0.01%, Mg: ≤0.005%, Zn: ≤0.005%, and Al≥99.1%, wherein Fe+Si≤0.65%, Fe/ Si is 2.0 to 4.0.
进一步地，所述锂电池用1100合金铝箔厚度为0.008～0.015mm，抗拉强度为220～260MPa，延伸率为3～5％。Further, the 1100 alloy aluminum foil for lithium battery has a thickness of 0.008 to 0.015 mm, a tensile strength of 220 to 260 MPa, and an elongation of 3 to 5%.
本申请一种锂电池用1100合金铝箔的制造方法，包括以下工艺步骤：(1)冶炼：按照所述合金的组分将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭；(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料；(3)粗轧：对步骤(2)所述的热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料；(4)再结晶退火：对所述粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板；(5)中轧：对所述再结晶退火后的轧板进一步冷轧，得到铝箔卷；(6)去应力退火：对所述中轧后的铝箔卷进行中间去应力退火；(7)对所述中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度，而后将铝箔卷分切。The invention relates to a method for manufacturing a 1100 alloy aluminum foil for a lithium battery, comprising the following process steps: (1) smelting: adding raw materials of each element to a melting furnace according to the composition of the alloy, and smelting to obtain an alloy ingot; (2) Hot rolling: after milling, the alloy ingot is hot rolled to obtain a hot rolled billet; (3) rough rolling: the hot rolled billet described in the step (2) is placed on a cold rolling mill for cold rough rolling to obtain a coarse (4) recrystallization annealing: intermediate recrystallization annealing of the rough rolling billet to obtain a recrystallized and annealed rolled sheet; (5) medium rolling: further cold rolling of the recrystallization annealing sheet Obtaining an aluminum foil roll; (6) stress relief annealing: performing intermediate stress relief annealing on the intermediate rolled aluminum foil roll; (7) performing cold finishing rolling on the intermediate stress relief annealed aluminum foil roll to a lithium battery The required thickness of the aluminum foil is then cut into aluminum foil rolls.
优选地，所述冶炼步骤中，熔炼制备条件为：熔炼温度为750～780℃，精炼温度为740～760℃，铸造温度为695～705℃。Preferably, in the smelting step, the smelting preparation conditions are: a smelting temperature of 750 to 780 ° C, a refining temperature of 740 to 760 ° C, and a casting temperature of 695 to 705 ° C.
优选地，所述热轧步骤中，热轧坯料的厚度为6.5～8.5mm。Preferably, in the hot rolling step, the thickness of the hot rolled billet is 6.5 to 8.5 mm.
优选地，所述粗轧步骤中，粗轧坯料的厚度为2.0～2.8mm。Preferably, in the rough rolling step, the rough rolling stock has a thickness of 2.0 to 2.8 mm.
优选地，所述再结晶退火步骤中，再结晶退火时的温度为400～430℃，保温时间为9～12小时。Preferably, in the recrystallization annealing step, the temperature during recrystallization annealing is 400 to 430 ° C, and the holding time is 9 to 12 hours.
优选地，所述中轧步骤中，铝箔卷的厚度为0.4～0.6mm。Preferably, in the intermediate rolling step, the thickness of the aluminum foil roll is 0.4 to 0.6 mm.
优选地，所述去应力退火步骤中，去应力退火时的温度为210～230℃，保温时间为12～15小时。Preferably, in the stress relief annealing step, the temperature during the stress relief annealing is 210 to 230 ° C, and the holding time is 12 to 15 hours.
本申请与现有技术相比，其优点在于：本申请控制Fe和Si含量，使第二相主要以α(Al 3Fe 3Si)相的形式存在，添加具有一定强化效果、且对导电率损害较小的Cu元素，并分别增加Sc和Ce两种稀土元素，在特定的Fe/Si含量比范围内，形成的含稀土第二相Al 3Sc和Al 11Ce 3可以强化晶界，抑制再结晶晶粒长大，提高箔材的高温稳定性；同时稀土元素有效改善了Fe和Si元素的存在形态和分布状况，抑制硬脆性β(Al 9Fe 2Si 2)相和Fe 3Al相的形成，使得成品表面针孔度大大下降，从而显著提高了1100系铝箔的机械性能、导电性能和成品率。材料成品抗拉强度高达240～260MPa，同时延伸率可达3.5％～5％，电导率为32～35Ms/m，表面润湿张力≥30个达因值。 Compared with the prior art, the application has the advantages that the present application controls the Fe and Si contents, so that the second phase is mainly in the form of α (Al 3 Fe 3 Si) phase, the addition has a certain strengthening effect, and the conductivity is It damages the smaller Cu element and increases the two rare earth elements, Sc and Ce. The rare earth-containing second phase Al 3 Sc and Al 11 Ce 3 can strengthen the grain boundary and inhibit the specific Fe/Si content ratio. The recrystallized grain grows and improves the high temperature stability of the foil. At the same time, the rare earth element effectively improves the existence and distribution of Fe and Si elements, and inhibits the hard and brittle β (Al 9 Fe 2 Si 2 ) phase and the Fe 3 Al phase. The formation of the pinhole of the finished product is greatly reduced, thereby significantly improving the mechanical properties, electrical conductivity and yield of the 1100 series aluminum foil. The finished product has a tensile strength of 240 to 260 MPa, an elongation of 3.5% to 5%, a conductivity of 32 to 35 Ms/m, and a surface wetting tension of ≥30 dyne.
具体实施方式detailed description
下面结合实施例对本申请作进一步说明。The present application will be further described below in conjunction with the embodiments.
实施例1Example 1
锂电池用1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.5％、Si：0.15％、Cu：0.1％、Ti：0.01％、Sc：0.03％、Ce：0.04％、Mn：0.007％、Mg：0.005％、Zn：0.002％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为760℃，精炼温度为740℃，铸造温度为700℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为8.0mm。(3)粗轧：对热轧坯料置于冷 轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.6mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为420℃，保温时间为10小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.6mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为220℃，保温时间为12小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.012mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度242MPa，延伸率4.78，电导率为35Ms/m，表面润湿张力为32个达因值。The 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.5%, Si: 0.15%, Cu: 0.1%, Ti: 0.01%, Sc: 0.03%, Ce : 0.04%, Mn: 0.007%, Mg: 0.005%, Zn: 0.002%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 760 ° C, and the refining temperature is 740 ° C. The casting temperature is 700 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to be 8.0 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.6 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 10 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.6 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 220 ° C and a holding time of 12 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.012 mm for the aluminum foil for the lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 242 MPa, elongation 4.78, electrical conductivity 35 Ms/m, surface wetting tension 32 dyne values. .
实施例2Example 2
锂电池用1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.4％、Si：0.1％、Cu：0.12％、Ti：0.01％、Sc：0.03％、Ce：0.07％、Mn：0.005％、Mg：0.003％、Zn：0.003％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为765℃，精炼温度为760℃，铸造温度为705℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为7.2mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.5mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为400℃，保温时间为9小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.5mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为230℃，保温时间为14小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.010mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度245MPa，延伸率4.41，电导率为34Ms/m，表面润湿张力为31个达因值。The 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.4%, Si: 0.1%, Cu: 0.12%, Ti: 0.01%, Sc: 0.03%, Ce : 0.07%, Mn: 0.005%, Mg: 0.003%, Zn: 0.003%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 765 ° C, and the refining temperature is 760 ° C. The casting temperature is 705 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to be 7.2 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet, and the thickness was controlled to 2.5 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 400 ° C and a holding time of 9 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 230 ° C and a holding time of 14 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.010 mm for the aluminum foil for the lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 245 MPa, elongation 4.41, electrical conductivity 34 Ms/m, surface wetting tension 31 dyne values. .
实施例3Example 3
锂电池用1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.4％、Si：0.1％、Cu：0.13％、Ti：0.015％、Sc：0.07％、Ce：0.03％、Mn：0.006％、Mg：0.003％、Zn：0.005％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为750℃，精炼温度为750℃，铸造温度为705℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为6.5mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.2mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为430℃，保温时间为10小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.4mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为210℃，保温时间为15小时。(7) 对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.012mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度250MPa，延伸率4.27，电导率为33Ms/m，表面润湿张力为32个达因值。The 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.4%, Si: 0.1%, Cu: 0.13%, Ti: 0.015%, Sc: 0.07%, Ce : 0.03%, Mn: 0.006%, Mg: 0.003%, Zn: 0.005%, and the rest is Al. The raw materials of each element are added to a melting furnace to obtain an alloy ingot, the melting temperature is 750 ° C, and the refining temperature is 750 ° C. The casting temperature is 705 °C. (2) Hot rolling: After milling the surface, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to 6.5 mm. (3) Rough rolling: The hot rolled billet is placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet, and the thickness is controlled to be 2.2 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 430 ° C and a holding time of 10 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.4 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 210 ° C and a holding time of 15 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.012 mm for the aluminum foil for lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 250 MPa, elongation 4.27, electrical conductivity 33 Ms/m, surface wetting tension 32 dyne values. .
实施例4Example 4
锂电池用1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.44％、Si：0.18％、Cu：0.15％、Ti：0.018％、Sc：0.05％、Ce：0.05％、Mn：0.007％、Mg：0.003％、Zn：0.002％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为780℃，精炼温度为740℃，铸造温度为695℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为7.0mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.8mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为420℃，保温时间为12小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.5mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为220℃，保温时间为12小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.008mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度259MPa，延伸率3.82，电导率为33Ms/m，表面润湿张力为32个达因值。The 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.44%, Si: 0.18%, Cu: 0.15%, Ti: 0.018%, Sc: 0.05%, Ce : 0.05%, Mn: 0.007%, Mg: 0.003%, Zn: 0.002%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, and the refining temperature is 740 ° C. The casting temperature was 695 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet having a thickness of 7.0 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 220 ° C and a holding time of 12 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.008 mm for the aluminum foil for lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 259 MPa, elongation 3.82, electrical conductivity 33 Ms/m, surface wetting tension 32 dyne values. .
实施例5Example 5
锂电池用1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.48％、Si：0.12％、Cu：0.12％、Ti：0.02％、Sc：0.04％、Ce：0.05％、Mn：0.008％、Mg：0.002％、Zn：0.004％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为780℃，精炼温度为740℃，铸造温度为695℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为7.0mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.8mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为420℃，保温时间为12小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.5mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为220℃，保温时间为12小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.008mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度253MPa，延伸率4.05，电导率为35Ms/m，表面润湿张力为31个达因值。The 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.48%, Si: 0.12%, Cu: 0.12%, Ti: 0.02%, Sc: 0.04%, Ce : 0.05%, Mn: 0.008%, Mg: 0.002%, Zn: 0.004%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, and the refining temperature is 740 ° C. The casting temperature was 695 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet having a thickness of 7.0 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 220 ° C and a holding time of 12 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.008 mm for the aluminum foil for lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 253 MPa, elongation 4.05, electrical conductivity 35 Ms/m, surface wetting tension 31 dyne values. .
实施例6Example 6
锂电池用1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.5％、Si：0.13％、Cu：0.12％、Ti：0.013％、Sc：0.03％、Ce：0.04％、Mn：0.006％、Mg：0.005％、Zn：0.004％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为780℃，精炼温度为740℃，铸造温度为695℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为7.0mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.8mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为420℃，保温时间为12小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.5mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为220℃，保温时间为12小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.008mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度248MPa，延伸率4.14，电导率为35Ms/m，表面润湿张力为30个达因值。The 1100 alloy aluminum foil for lithium battery is produced according to the following production process steps: (1) smelting: according to the mass percentage component: Fe: 0.5%, Si: 0.13%, Cu: 0.12%, Ti: 0.013%, Sc: 0.03%, Ce : 0.04%, Mn: 0.006%, Mg: 0.005%, Zn: 0.004%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, and the refining temperature is 740 ° C. The casting temperature was 695 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet having a thickness of 7.0 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 220 ° C and a holding time of 12 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.008 mm for the aluminum foil for lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 248 MPa, elongation 4.14, electrical conductivity 35 Ms/m, surface wetting tension 30 dyne values. .
对比例1Comparative example 1
1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.5％、Si：0.10％、Cu：0.12％、Ti：0.013％、Sc：0.03％、Ce：0.04％、Mn：0.006％、Mg：0.005％、Zn：0.004％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为780℃，精炼温度为740℃，铸造温度为695℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为7.0mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.8mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为420℃，保温时间为12小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.5mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为220℃，保温时间为12小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.008mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度202MPa，延伸率3.18，电导率为35Ms/m，表面润湿张力为26个达因值。1100 alloy aluminum foil is produced according to the following production process steps: (1) smelting: according to the mass percentage components: Fe: 0.5%, Si: 0.10%, Cu: 0.12%, Ti: 0.013%, Sc: 0.03%, Ce: 0.04% Mn: 0.006%, Mg: 0.005%, Zn: 0.004%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 780 ° C, the refining temperature is 740 ° C, and the casting temperature It is 695 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet having a thickness of 7.0 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.8 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 12 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.5 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 220 ° C and a holding time of 12 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.008 mm for the aluminum foil for lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 202 MPa, elongation 3.18, electrical conductivity 35 Ms/m, surface wetting tension 26 dyne values. .
对比例2Comparative example 2
1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.5％、Si：0.15％、Cu：0.1％、Ti：0.01％、Sc：0.01％、Ce：0.01％、Mn：0.007％、Mg：0.005％、Zn：0.002％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度 为760℃，精炼温度为740℃，铸造温度为700℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为8.0mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.6mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为420℃，保温时间为10小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.6mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为220℃，保温时间为12小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.012mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度208MPa，延伸率3.02，电导率为35Ms/m，表面润湿张力为24个达因值。1100 alloy aluminum foil is produced according to the following production process steps: (1) smelting: according to mass percentage components: Fe: 0.5%, Si: 0.15%, Cu: 0.1%, Ti: 0.01%, Sc: 0.01%, Ce: 0.01% Mn: 0.007%, Mg: 0.005%, Zn: 0.002%, the balance is Al, the raw materials of each element are added to the melting furnace, and the alloy ingot is obtained by smelting, the melting temperature is 760 ° C, the refining temperature is 740 ° C, and the casting temperature It is 700 °C. (2) Hot rolling: After milling, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to be 8.0 mm. (3) Rough rolling: The hot rolled billet was placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet having a thickness of 2.6 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 420 ° C and a holding time of 10 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.6 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 220 ° C and a holding time of 12 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.012 mm for the aluminum foil for the lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was measured by conventional methods and instruments. The mechanical properties were: tensile strength 208 MPa, elongation 3.02, electrical conductivity 35 Ms/m, surface wetting tension 24 dyne values. .
对比例3Comparative example 3
1100合金铝箔按以下生产工艺步骤生产：(1)冶炼：按照质量百分比组分：Fe：0.3％、Si：0.2％、Cu：0.13％、Ti：0.015％、Sc：0.07％、Ce：0.03％、Mn：0.006％、Mg：0.003％、Zn：0.005％，其余为Al，将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭，熔炼温度为750℃，精炼温度为750℃，铸造温度为705℃。(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料，厚度控制为6.5mm。(3)粗轧：对热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料，厚度控制为2.2mm。(4)再结晶退火：对粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板，温度为430℃，保温时间为10小时。(5)中轧：对再结晶退火后的轧板进一步直轧，得到铝箔卷，厚度控制为0.4mm。(6)去应力退火：对中轧后的铝箔卷进行中间去应力退火，温度为210℃，保温时间为15小时。(7)对中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度为0.012mm，而后将铝箔卷分切，即可得成品锂电池用铝箔。经常规方法与仪器进行测定，由上述步骤制备得到的1100铝合金箔材，力学性能为：抗拉强度195MPa，延伸率2.98，电导率为33Ms/m，表面润湿张力为24个达因值。1100 alloy aluminum foil is produced according to the following production process steps: (1) smelting: according to the mass percentage components: Fe: 0.3%, Si: 0.2%, Cu: 0.13%, Ti: 0.015%, Sc: 0.07%, Ce: 0.03% Mn: 0.006%, Mg: 0.003%, Zn: 0.005%, and the rest is Al. The raw materials of each element are added to the melting furnace to obtain an alloy ingot, the melting temperature is 750 ° C, the refining temperature is 750 ° C, and the casting temperature is obtained. It is 705 °C. (2) Hot rolling: After milling the surface, the alloy ingot was hot rolled to obtain a hot rolled billet, and the thickness was controlled to 6.5 mm. (3) Rough rolling: The hot rolled billet is placed on a cold rolling mill for cold rough rolling to obtain a rough rolled billet, and the thickness is controlled to be 2.2 mm. (4) Recrystallization annealing: Intermediate recrystallization annealing was performed on the rough rolled billet to obtain a recrystallized and annealed rolled sheet having a temperature of 430 ° C and a holding time of 10 hours. (5) Medium rolling: The rolled sheet after recrystallization annealing was further subjected to straight rolling to obtain an aluminum foil roll, and the thickness was controlled to 0.4 mm. (6) Stress relief annealing: The intermediate foil after the intermediate rolling is subjected to intermediate stress relief annealing at a temperature of 210 ° C and a holding time of 15 hours. (7) The aluminum foil roll after the intermediate stress relief annealing is cold-finished to a thickness of 0.012 mm for the aluminum foil for the lithium battery, and then the aluminum foil roll is slit to obtain an aluminum foil for the finished lithium battery. The 1100 aluminum alloy foil prepared by the above steps was tested by conventional methods and instruments. The mechanical properties were: tensile strength 195 MPa, elongation 2.98, electrical conductivity 33 Ms/m, surface wetting tension 24 dyne values. .

Claims (9)

  1. 一种锂电池用1100合金铝箔，其特征在于：包含以下质量百分比组分：Fe：0.4～0.5％、Si：0.1～0.2％、Cu：0.1～0.15％、Ti：0.01～0.02％、Sc：0.03～0.07％、Ce：0.03～0.07％、Mn：≤0.01％、Mg：≤0.005％、Zn：≤0.005％以及Al≥99.1％，其中Fe+Si≤0.65％，Fe/Si为2.0～4.0。A 1100 alloy aluminum foil for a lithium battery, characterized by comprising the following mass percentage components: Fe: 0.4 to 0.5%, Si: 0.1 to 0.2%, Cu: 0.1 to 0.15%, Ti: 0.01 to 0.02%, Sc: 0.03 to 0.07%, Ce: 0.03 to 0.07%, Mn: ≤0.01%, Mg: ≤0.005%, Zn: ≤0.005%, and Al≥99.1%, wherein Fe+Si≤0.65%, Fe/Si is 2.0 to 4.0 .
  2. 根据权利要求1所述的锂电池用1100合金铝箔，其特征在于：所述锂电池用1100合金铝箔厚度为0.008～0.015mm，抗拉强度为220～260MPa，延伸率为3～5％。The 1100 alloy aluminum foil for a lithium battery according to claim 1, wherein the 1100 alloy aluminum foil for the lithium battery has a thickness of 0.008 to 0.015 mm, a tensile strength of 220 to 260 MPa, and an elongation of 3 to 5%.
  3. 一种如权利要求1或2所述的锂电池用1100合金铝箔的制造方法，其特征在于，包括以下工艺步骤：(1)冶炼：按照所述合金的组分将各元素的原材料加入熔炼炉中，冶炼得到合金铸锭；(2)热轧：铣面后将所述合金铸锭进行热轧，得到热轧坯料；(3)粗轧：对步骤(2)所述的热轧坯料置于冷轧机上进行冷粗轧，得到粗轧坯料；(4)再结晶退火：对所述粗轧坯料进行中间再结晶退火，得到再结晶退火后的轧板；(5)中轧：对所述再结晶退火后的轧板进一步冷轧，得到铝箔卷；(6)去应力退火：对所述中轧后的铝箔卷进行中间去应力退火；(7)对所述中间去应力退火处理后的铝箔卷进行冷精轧至锂电池用铝箔所需厚度，而后将铝箔卷分切。A method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 1 or 2, comprising the following process steps: (1) smelting: adding raw materials of respective elements to a melting furnace according to the composition of the alloy In the smelting, an alloy ingot is obtained; (2) hot rolling: the alloy ingot is hot-rolled after milling to obtain a hot-rolled billet; (3) rough rolling: the hot-rolled billet described in the step (2) is placed Cold rough rolling is performed on a cold rolling mill to obtain a rough rolling billet; (4) recrystallization annealing: intermediate recrystallization annealing is performed on the rough rolling billet to obtain a recrystallization annealing sheet; (5) medium rolling: The re-crystallization annealing plate is further cold-rolled to obtain an aluminum foil roll; (6) stress relief annealing: intermediate stress relief annealing of the intermediate rolled aluminum foil roll; (7) after the intermediate stress relief annealing treatment The aluminum foil roll is subjected to cold finish rolling to the required thickness of the aluminum foil for the lithium battery, and then the aluminum foil roll is slit.
  4. 根据权利要求3所述的锂电池用1100合金铝箔的制造方法，其特征在于，所述冶炼步骤中，熔炼制备条件为：熔炼温度为750～780℃，精炼温度为740～760℃，铸造温度为695～705℃。The method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 3, wherein in the smelting step, the smelting preparation conditions are: a melting temperature of 750 to 780 ° C, a refining temperature of 740 to 760 ° C, and a casting temperature. It is 695 to 705 °C.
  5. 根据权利要求3所述的锂电池用1100合金铝箔的制造方法，其特征在于，所述热轧步骤中，所述热轧坯料的厚度为6.5～8.5mm。The method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 3, wherein in the hot rolling step, the hot rolled billet has a thickness of 6.5 to 8.5 mm.
  6. 根据权利要求3所述的锂电池用1100合金铝箔的制造方法，其特征在于，所述粗轧步骤中，所述粗轧坯料的厚度为2.0～2.8mm。The method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 3, wherein in the rough rolling step, the rough rolling stock has a thickness of 2.0 to 2.8 mm.
  7. 根据权利要求3所述的锂电池用1100合金铝箔的制造方法，其特征在于，所述再结晶退火步骤中，再结晶退火时的温度为400～430℃，保温时间为9～12小时。The method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 3, wherein in the recrystallization annealing step, the temperature during recrystallization annealing is 400 to 430 ° C, and the holding time is 9 to 12 hours.
  8. 根据权利要求3所述的锂电池用1100合金铝箔的制造方法，其特征在于，所述中轧步骤中，所述铝箔卷的厚度为0.4～0.6mm。The method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 3, wherein in the intermediate rolling step, the aluminum foil roll has a thickness of 0.4 to 0.6 mm.
  9. 根据权利要求3所述的锂电池用1100合金铝箔的制造方法，其特征在于，所述去应力退火步骤中，去应力退火时的温度为210～230℃，保温时间为12～15小时。The method for producing a 1100 alloy aluminum foil for a lithium battery according to claim 3, wherein in the stress relief annealing step, the temperature during the stress relief annealing is 210 to 230 ° C, and the heat retention time is 12 to 15 hours.
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