CN102899593B - Annealing method for aluminum used for cable and aluminum alloy belt and foil - Google Patents
Annealing method for aluminum used for cable and aluminum alloy belt and foil Download PDFInfo
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- CN102899593B CN102899593B CN201210453197.5A CN201210453197A CN102899593B CN 102899593 B CN102899593 B CN 102899593B CN 201210453197 A CN201210453197 A CN 201210453197A CN 102899593 B CN102899593 B CN 102899593B
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Abstract
The invention relates to an annealing method for aluminum used for a cable and an aluminum alloy belt and foil. The annealing method comprises the following four steps: step one, heating the furnace temperature of a box-type annealing furnace to 190-250 DEG C, with the temperature rise gradient of 2-3 DEG C per hour, and the heat preservation time of 60-250 minutes; step two, heating the furnace temperature of the box-type annealing furnace to 380-435 DEG C, with the temperature rise gradient of 2-3 DEG C per hour, and the heat preservation time of 10-20 hours; step three, reducing the furnace temperature of the box-type annealing furnace to 340-370 DEG C, with the temperature fall gradient of 5-6 DEG C per hour, and the heat preservation time of 4-15 hours; and step four, reducing the furnace temperature of the box-type annealing furnace to 190-220 DEG C, with the temperature fall gradient of 5-6 DEG C per hour, and the heat preservation time of 1-4 hours; and adopting air cooling outside the furnace as a cooling mode. The annealing method can effectively prevent oil stain on material surface and improve the elongation, and is short in production cycle and low in production cost.
Description
Technical field
The present invention relates to the method for annealing of a kind of cable use aluminium and aluminum alloy strip, foil, the finished products method of specifically a kind of casting+cold-rolling practice production cable use aluminium and aluminum alloy strip, foil.
Background technology
Cable is stopping property and the shielding of utilizing aluminium foil with aluminium and aluminum alloy strip, foil, and single or double is coated with and applies after plastic film, the aluminum-plastic composite paper tinsel of formation; guard shield as cable; can prevent the destructive impact of cable, and play corrosion-resistant, moistureproof, waterproof, the safety effect of protection cable interior lines.For cable aluminium and aluminum alloy strip, foil require surface without being mingled with, hole, there is higher comprehensive mechanical property, his-and-hers watches are worn oil mass, oil mark requirement is very strict.At present, domestic needs amount is 25kt/a.
Along with the fast development of China's economic construction, aluminium foil is applied to a plurality of industries more and more widely, and wherein electric line cable industry is increasing to the demand of aluminium foil, and specification of quality is also more and more stricter.Common cable paper tinsel production technique Yi Bei most domestic producer grasps, but aluminium and aluminum alloy strip, foil require that surface quality is high, pin hole is few, comprehensive mechanical property good, elongation is high and surface degreasing will reach A level for the cable of high quality, high request, so the cable foil of producing for special cable at present still partly depends on import.In addition, the cable aluminium foil adopting in the trickle wire rod that the communications industry, computer industry and national defense industry are used still needs import, the domestic producer that this type of aluminium foil is researched and developed is considerably less, reason is to affect the many factors of this type of cable aluminium foil quality, and it all has higher requirement to links such as the additive formulations of equipment precision, technical oil, gloss level of roll, rolling technology, annealing processs.
At present, for cable, the annealing of aluminium and aluminum alloy strip, foil mainly adopts second annealing technology mode, finished products adopts the long insulation annealing mode of low temperature, and this annealing process has the following disadvantages: in insulation annealing process, easily produce for a long time grain growth, phenomenon that unit elongation is on the low side; The surface degreasing poor effect of aluminium foil; Cause the lengthening in production process cycle, the increase of production cost, the reduction of production efficiency simultaneously.
Summary of the invention
Technical problem to be solved by this invention is, the method for annealing of aluminium and aluminum alloy strip, foil for the cable of provide a kind of and can effectively prevent material surface oil mark, improve unit elongation, with short production cycle, production cost is low.
Aluminum and aluminum alloy mateial band, the foil that for cable of the present invention, the method for annealing of aluminium and aluminum alloy strip, foil adopts is to be through the aluminium of casting and cold rolling production and aluminum alloy strip, foil, and it is a kind of in pure aluminum material, 8011 aluminum alloy materials, 8079 aluminum alloy materials that its material is chosen as 1; Described aluminium and aluminum alloy strip, foil are placed in to box-annealing furnace and anneal, specifically comprise following four steps:
The first step, is heated to 190-250 ℃ by the furnace temperature of box-annealing furnace, and temperature rising gradient is 2-3 ℃/h, soaking time 60-250 minute;
Second step, is heated to 380-435 ℃ by the furnace temperature of box-annealing furnace, and temperature rising gradient is 2-3 ℃/h, soaking time 10-20 hour;
The 3rd step, is reduced to 340-370 ℃ by the furnace temperature of box-annealing furnace, and it is 5-6 ℃/h that temperature reduces gradient, soaking time 4-15 hour;
The 4th step, is reduced to 190-220 ℃ by the furnace temperature of box-annealing furnace, and it is 5-6 ℃/h that temperature reduces gradient, soaking time 1-4 hour; The type of cooling adopts the air cooling of coming out of the stove.
The method for annealing of casting provided by the invention and cold rolling production cable use aluminium and aluminum alloy strip, foil, adopt classification ladder high-temperature annealing process method, more than reaching the recrystallization temperature of metallic substance, accelerated the formation of grain structure nucleation rate, thereby can access disperse, tiny, uniform crystal structure after annealing, can reach best mechanical property, guarantee that material has that toughness is high, plasticity good, unit elongation is high and surface degreasing is clean, surperficial swabbing simultaneously reaches A level; Compare with common cable paper tinsel annealing process and saved a middle high temperature annealing operation, annealing time reduces, and greatly reduces production cost, has improved production efficiency.
Embodiment
Embodiment 1
To annealing through casting and 8011 aluminum alloy strips of cold rolling production, the finished product of foil, method for annealing: furnace temperature is heated rapidly to 190 ℃, is incubated 1 hour; Continue to be heated to 390 ℃, then be incubated 15 hours, then cool to 345 ℃, be incubated 12 hours; Continue to cool to 195 ℃, be incubated 2 hours.After annealing, for detection streamer, the mechanical property of aluminium and aluminum alloy strip, foil is: 109-112MPa, unit elongation >=18%; Surface swabbing reaches A level.
Embodiment 2
To annealing through casting and 8011 aluminum alloy strips of cold rolling production, the finished product of foil, method for annealing: furnace temperature is heated rapidly to 200 ℃, is incubated 2 hours; Continue to be heated to 400 ℃, then be incubated 16 hours, then cool to 350 ℃, be incubated 10 hours; Continue to cool to 200 ℃, be incubated 2 hours.After annealing, for detection streamer, the mechanical property of aluminium and aluminum alloy strip, foil is: 107-110MPa, unit elongation >=20%; Surface swabbing reaches A level.
Embodiment 3
To annealing through casting and 8079 aluminum alloy strips of cold rolling production, the finished product of foil, method for annealing: furnace temperature is heated rapidly to 210 ℃, is incubated 3 hours; Continue to be heated to 410 ℃, then be incubated 14 hours, then cool to 360 ℃, be incubated 8 hours; Continue to cool to 190 ℃, be incubated 3 hours.After annealing, for detection streamer, the mechanical property of aluminium and aluminum alloy strip, foil is: 105-107MPa, unit elongation >=22%; Surface swabbing reaches A level.
Embodiment 4
To annealing through casting and 1060 aluminium strips of cold rolling production, the finished product of foil, method for annealing: furnace temperature is heated rapidly to 220 ℃, is incubated 4 hours; Continue to be heated to 420 ℃, then be incubated 16 hours, then cool to 365 ℃, be incubated 6 hours; Continue to cool to 210 ℃, be incubated 2 hours.After annealing, for detection streamer, the mechanical property of aluminium and aluminum alloy strip, foil is: 78-82MPa, unit elongation >=25%; Surface swabbing reaches A level.
Embodiment 5
To annealing through casting and 1050 aluminium strips of cold rolling production, the finished product of foil, method for annealing: furnace temperature is heated rapidly to 220 ℃, is incubated 4 hours; Continue to be heated to 430 ℃, then be incubated 15 hours, then cool to 370 ℃, be incubated 8 hours; Continue to cool to 195 ℃, be incubated 3 hours.After annealing, for detection streamer, the mechanical property of aluminium and aluminum alloy strip, foil is: 82-85MPa, unit elongation >=23%; Surface swabbing reaches A level.
Claims (1)
1. the method for annealing of aluminium and aluminum alloy strip, foil for a cable, it is characterized in that: the aluminum and aluminum alloy mateial band of employing, foil are to be through the aluminium of casting and cold rolling production and aluminum alloy strip, foil, it is a kind of in pure aluminum material, 8011 aluminum alloy materials, 8079 aluminum alloy materials that its material is chosen as 1; Described aluminium and aluminum alloy strip, foil are placed in to box-annealing furnace and anneal, specifically comprise following four steps:
The first step, is heated to 190-250 ℃ by the furnace temperature of box-annealing furnace, and temperature rising gradient is 2-3 ℃/h, soaking time 60-250 minute;
Second step, is heated to 380-435 ℃ by the furnace temperature of box-annealing furnace, and temperature rising gradient is 2-3 ℃/h, soaking time 10-20 hour;
The 3rd step, is reduced to 340-370 ℃ by the furnace temperature of box-annealing furnace, and it is 5-6 ℃/h that temperature reduces gradient, soaking time 4-15 hour;
The 4th step, is reduced to 190-220 ℃ by the furnace temperature of box-annealing furnace, and it is 5-6 ℃/h that temperature reduces gradient, soaking time 1-4 hour; The type of cooling adopts the air cooling of coming out of the stove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210453197.5A CN102899593B (en) | 2012-11-13 | 2012-11-13 | Annealing method for aluminum used for cable and aluminum alloy belt and foil |
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| CN201210453197.5A CN102899593B (en) | 2012-11-13 | 2012-11-13 | Annealing method for aluminum used for cable and aluminum alloy belt and foil |
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| CN102899593A CN102899593A (en) | 2013-01-30 |
| CN102899593B true CN102899593B (en) | 2014-11-26 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668015A (en) * | 2013-12-14 | 2014-03-26 | 苏州戴尔曼电器有限公司 | Annealing process of aluminum alloy cable conductor |
| CN109266983A (en) * | 2018-11-29 | 2019-01-25 | 天津忠旺铝业有限公司 | A method of prevent aluminum alloy coiled materials Annealing oil stain from generating |
| CN111360067B (en) * | 2020-03-25 | 2022-02-15 | 江苏鼎胜新能源材料股份有限公司 | Preparation method of aluminum material for shielded cable |
| CN112359301B (en) * | 2020-10-20 | 2022-02-01 | 无锡市铝泰新材料股份有限公司 | Annealing process of aluminum foil |
| CN113832419B (en) * | 2021-09-27 | 2022-09-20 | 广西柳州银海铝业股份有限公司 | Aluminum alloy coiled material complete annealing method without protective atmosphere |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429634B (en) * | 2008-12-12 | 2010-06-02 | 江苏常铝铝业股份有限公司 | Annealing method of cast-rolling aluminum foil used for air conditioner radiation fin |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101429634B (en) * | 2008-12-12 | 2010-06-02 | 江苏常铝铝业股份有限公司 | Annealing method of cast-rolling aluminum foil used for air conditioner radiation fin |
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Address after: 212141 Zhenjiang province Jiangsu City Jingkou Technology Industrial Park Patentee after: JIANGSU DINGSHENG NEW ENERGY MATERIAL STOCK CO., LTD. Address before: 212141 Zhenjiang province Jiangsu City Jingkou Technology Industrial Park Patentee before: Zhenjiang Dingsheng Aluminum Stock Co., Ltd. |