CN109811283A - The annealing process of double-zero aluminum foil prevention surface hot drum - Google Patents
The annealing process of double-zero aluminum foil prevention surface hot drum Download PDFInfo
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- CN109811283A CN109811283A CN201910238009.9A CN201910238009A CN109811283A CN 109811283 A CN109811283 A CN 109811283A CN 201910238009 A CN201910238009 A CN 201910238009A CN 109811283 A CN109811283 A CN 109811283A
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Abstract
The invention belongs to technical field of nonferrous metal processing, are related to the annealing process of aluminium foil, in particular to a kind of annealing process of double-zero aluminum foil prevention surface hot drum, comprising: then the aluminum foil coil after bundling is fed into annealing furnace in standing naturally to room temperature outside furnace；When annealing furnace bore temperature differs≤5 DEG C with material temperature, 60 DEG C are warming up to so that the rate of≤6 DEG C/h is slow, keeps the temperature 2~3h；Then 90 DEG C are warming up to the rate of heat addition of≤5 DEG C/h, keep the temperature 2~3h；120 DEG C are warming up to the rate of heat addition of≤5 DEG C/h again, keeps the temperature 2~3h；180~195 DEG C finally are warming up to the rate of 8~10 DEG C/h, carries out heat preservation and oil removing；After the completion of heat preservation and oil removing, blow-on is come out of the stove after material volume stands 5~8h in furnace.The present invention solves the problems, such as to perplex double zero wide cut aluminum foil annealing hot drums, the hot drum of bis- 07 or less the wide cut aluminium foils of especially >=1100mm for a long time.Reduce and take off useless amount caused by annealing hot drum, improves aluminium foil lumber recovery, reduce production cost, promote order delivery rate.
Description
Technical field
The invention belongs to technical field of nonferrous metal processing, are related to the annealing process of aluminium foil, in particular to a kind of double zero aluminium
The annealing process of foil prevention surface hot drum.
Background technique
It is domestic that usually thickness is less than after 0.01mm, that is, decimal point there are two zero aluminium foil (such as 0.0055~0.009mm),
Referred to as double-zero aluminum foil is then known as thin foil (light gauge foil) in the world；Aluminium foil products can be divided into cigarette by its final use
With aluminium foil, aluminum foil for flexible package (being applied to food, drug etc. to pack), aluminium foil used in capacitor etc..All kinds of aluminium foils use use according to it
On the way, there is different requirements to aluminium foil production process and technological parameter.
The production of general aluminium foil uses roll-type rolling mill practice in the industry, is done and is lubricated using ROLLING OIL in the operation of rolling, after rolling
Hard state aluminium foil surface adsorbs one layer of very thin oil film, directly using be not able to satisfy food, drug, cigarette with etc. be packaged in it is hygienic,
Quality requirement in terms of plasticity and safety.Applied to the aluminium foil of packaging, after being usually all rolling cutting, by anneal oil removing,
It is obtained after improving plasticity.
Aluminium is rolled up during anneal oil removing, since the rate of each section is inconsistent in thermal histories, the shadow of expanded by heating
It rings, aluminium volume is internal to generate internal stress, and under the action of thermal expansion stress, aluminium volume extexine would generally generate hot drum.Hot drum
The influence of degree expanded by heating stress intensity, the internal stress for thermally expanding formation is bigger, overcome the friction of aluminium foil between layers and
The ability of aluminium foil yield strength is stronger, and the surface hot drum that release stress is formed is deeper.
Double-zero aluminum foil volume due to forming hot drum smooth can not be unfolded during user is used in combination, and still have after compound
The trace of hot drum influences composite surface quality and user's impression.Market major part user cannot receive hot drum aluminum foil coil.
When applicant handles hot drum volume, usually hot drum part is taken off about 300~400m, it is more even to take 500 off
Surface layer hot drum just fades away after~1000m.Hot drum part accounts for volume and weighs about 2.5%, the factory of a 20000 t aluminium foils of annual output, if pressing
The hot drum for averagely generating 10% rolls up calculating, takes off useless hot drum material about 20000t × 10% × 2.5%=50t every year.It is many at present
Company is to improve lumber recovery, usually no longer simply removes to hot drum volume, but is rewinded again using dedicated small cutting machine.Though
So reduce loss, improve lumber recovery, but small cutting rewinds and also needs time and cost, not only influence market and deliver,
Increase production cost.Aluminium roll up hot drum have it is greatly uncertain, sometimes less, it is sometimes more, hot drum degree is also uncontrollable, to producing
Bring biggish puzzlement.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the present invention discloses one kind effectively prevention double-zero aluminum foil surface hot drum
Annealing process can reduce quantity and hot drum depth that hot drum volume generates, and reduce hot drum generation takes off useless amount, reduce production cost,
Promote order delivery rate.
A kind of annealing process of double-zero aluminum foil prevention surface hot drum, includes the following steps:
A, then the aluminum foil coil after bundling is fed into annealing furnace in standing naturally to room temperature outside furnace；
B, when annealing furnace bore temperature differs≤5 DEG C with material temperature, 60 DEG C are warming up to so that the rate of≤6 DEG C/h is slow, heat preservation 2
~3h；Then 90 DEG C are warming up to the rate of heat addition of≤5 DEG C/h, keep the temperature 2~3h；It is warming up to again with the rate of heat addition of≤5 DEG C/h
120 DEG C, keep the temperature 2~3h；180~195 DEG C finally are warming up to the rate of 8~10 DEG C/h, carries out heat preservation and oil removing；
C, after the completion of heat preservation and oil removing, blow-on is come out of the stove after material volume stands 5~8h in furnace.
It in the more excellent disclosed example of the present invention, is stood naturally outside furnace described in step A, according to woollen property and of different size, setting
Natural time of repose outside different furnaces: aluminum foil coil of the width in 800~1400mm, hot rolling 2~4d of material, 3~7d of casting material；Width
The aluminium foil of≤700mm, hot rolling material < 2d, casting material < 3d.
Further, natural time of repose outside different furnaces is set described in step A, hot rolling material width every increase 400mm is quiet
Set time increase 1d；The every increase 200mm of casting material width, time of repose increase 1d.
In the more excellent disclosed example of the present invention, in temperature-rise period described in step B, circulating fan uses low frequency low speed, wind speed in furnace
100~200rpm, 500~600rpm of wind speed when holding stage.
In the more excellent disclosed example of the present invention, oil removing described in step B is middle low temperature long-time heat preservation oil removing, 180~195 DEG C whole
Oil removing is kept the temperature, the oil removing time is determined according to aluminium foil material volume width size, material is wider, and the heat preservation oil removing time is longer, expects narrower, heat preservation
The oil removing time is shorter.
Annealing process disclosed in this invention, terminates from starting to warm up to heat preservation, and entire temperature-rise period must prevent material volume from existing
The internal stress generated during expanded by heating is greater than the frictional force and surface layer yield strength of aluminium foil between layers, avoids thermally expanding
The stress of generation concentrates the hot drum for leading to aluminum foil coil outer layer.Aluminum foil coil is according to of different size after bundling, is arranged different quiet
It sets the time, material volume is wider, and natural time of repose is longer, in favor of discharging internal stress.
Natural time of repose is wide different according to material；Temperature rise period, circulating fan speed takes≤low speed of 200rpm, it prevents
Too fast wind speed is excessive to the thermal shock of the formation of material volume, reduces aluminium and rolls up the even formation stress raisers of uneven heating；Slow heating rank
Section is to prevent the important step of aluminium volume hot drum, is provided with slow heating rate and soaking time in the process, technical process stage by stage into
Row, cooperation circulating fan low speed operation reduce the generation that thermal expansion stress is concentrated to the maximum extent；By being segmented slow heating and 2-
The short time heat preservation (2~3h is of short duration heat preservation in step B) of 3h enters medium temperature technique and keeps the temperature the oil removing stage, and annealing at this time is main
It is for the purpose of removing the Residual oil in aluminum foil coil, ensure the strength character of aluminium foil, aluminum foil coil various places inside thermo parameters method is consistent,
No thermal expansion stress is concentrated, 500~600rpm of circulating fan middling speed operation；The width decision that the medium temperature oil removing time rolls up according to aluminium,
Temperature can effectively meet requirement of the user to aluminium foil strength character usually between 180~195 DEG C.
Beneficial effect
Annealing process of the present invention, it is ensured that meet aluminium foil removes oiliness and strength character, can reduce double-zero aluminum foil and move back
Side effect in fiery temperature-rise period --- hot drum while providing the high-quality aluminium foil of high-quality for market, can reduce aluminum foil annealing
Amount of waste caused by hot drum, improves lumber recovery.Tend to more wide cut in In Aluminium Foil Packing market, more low price competes period, favorably
In user's improving production efficiency, in the case where reducing production cost, this increasing drops in the effective generation for controlling aluminum foil annealing hot drum
Effect improves the market competitiveness.It solves the problems, such as to perplex double zero wide cut aluminum foil annealing hot drums, especially >=1100mm for a long time
The hot drum of double 07 or less wide cut aluminium foils.Reduce and take off useless amount caused by annealing hot drum, improves aluminium foil lumber recovery, reduction is produced into
This, promotes order delivery rate.
Detailed description of the invention
Fig. 1 annealing process curve figure, wherein horizontal axis is the time (h), and the longitudinal axis is temperature (DEG C).
Specific embodiment
The following describes the present invention in detail with reference to examples, so that those skilled in the art more fully understand this hair
It is bright, but the invention is not limited to following embodiments.
Production technology, equipment setting:
1. since annealing hot drum is concentrated mainly on casting material, and increasing with material volume width, hot drum trend increases.Prevention annealing
The process of hot drum is to be stood naturally after cutting according to material volume width, 2~4d of hot rolling, 3~7d of casting material first；
2. annealing furnace full-scale digital temperature control, purges blower and circulating fan uses frequency control；
3. burner hearth internal difference in temperature≤3 DEG C；
4. taking the material volume of similar specification in embodiment, as far as possible to avoid quality risk, the wide cut material volume that embodiment uses
Quantity is no more than volume 12 (2 frame)；
5. to guarantee that the efficiency of furnace of annealing in process implementing verification process, embodiment by the way of mixed furnace, mix furnace charge as far as possible
It is tested with the narrow material volume collocation wide cut material volume relatively small to annealing hot drum susceptibility, thus during effectively reducing test
Quality cost risk.
Embodiment 1 is executed by prevention hot drum normal process
The time does not stand embodiment 2 naturally as required
Embodiment 3 delays warming-up section circulating fan and directlys adopt high speed 500rpm
It is as required that fire box temperature is not cooling before 4 process operation of embodiment
The slow heating of embodiment 5 is carried out without segmentation as required
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (5)
1. a kind of annealing process of double-zero aluminum foil prevention surface hot drum, which comprises the steps of:
Then aluminum foil coil after bundling is fed into annealing furnace in standing naturally to room temperature outside furnace；
When annealing furnace bore temperature differs≤5 DEG C with material temperature, 60 DEG C are warming up to so that the rate of≤6 DEG C/h is slow, keeps the temperature 2~3h；
Then 90 DEG C are warming up to the rate of heat addition of≤5 DEG C/h, keep the temperature 2~3h；120 DEG C are warming up to the rate of heat addition of≤5 DEG C/h again,
Keep the temperature 2~3h；180~195 DEG C finally are warming up to the rate of 8~10 DEG C/h, carries out heat preservation and oil removing；
After the completion of heat preservation and oil removing, blow-on is come out of the stove after material volume stands 5~8h in furnace.
2. the annealing process of double-zero aluminum foil prevention surface hot drum according to claim 1, it is characterised in that: furnace described in step A
It is outer to stand naturally, according to woollen property and of different size, set natural time of repose outside different furnaces: width 800~
The aluminum foil coil of 1400mm, hot rolling 2~4d of material, 3~7d of casting material；Width≤700mm aluminium foil, hot rolling material < 2d, casting material <
3d。
3. the annealing process of double-zero aluminum foil prevention surface hot drum according to claim 2, it is characterised in that: set described in step A
Natural time of repose, the every increase 400mm of hot rolling material width, time of repose increase 1d outside fixed different furnace；The every increasing of casting material width
Add 200mm, time of repose increases 1d.
4. the annealing process of double-zero aluminum foil prevention surface hot drum according to claim 1, it is characterised in that: risen described in step B
During temperature, circulating fan uses low frequency low speed, 100~200rpm of wind speed, 500~600rpm of wind speed when holding stage in furnace.
5. the annealing process of double-zero aluminum foil prevention surface hot drum according to claim 1, it is characterised in that: removed described in step B
Oil is middle low temperature long-time heat preservation oil removing, and whole 180~195 DEG C of heat preservation oil removings determine oil removing according to aluminium foil material volume width size
Time, material is wider, and the heat preservation oil removing time is longer, and material is narrower, and the heat preservation oil removing time is shorter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910238009.9A CN109811283A (en) | 2019-03-27 | 2019-03-27 | The annealing process of double-zero aluminum foil prevention surface hot drum |
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| CN201910238009.9A CN109811283A (en) | 2019-03-27 | 2019-03-27 | The annealing process of double-zero aluminum foil prevention surface hot drum |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110760766A (en) * | 2019-10-23 | 2020-02-07 | 江苏鼎胜新能源材料股份有限公司 | Aluminum material for power station air cooling system and preparation method thereof |
| CN115125459A (en) * | 2022-07-30 | 2022-09-30 | 神隆宝鼎新材料有限公司 | Method for inhibiting double-zero foil annealing thermal bulging |
| CN115927919A (en) * | 2022-11-14 | 2023-04-07 | 嘉兴维勒新材料有限公司 | Household baked aluminum foil with bright double surfaces and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282863A (en) * | 2016-09-08 | 2017-01-04 | 江苏大亚铝业有限公司 | High-peeling strength food packaging aluminium foil high temperature negative pressure anneal technique |
| CN106521372A (en) * | 2016-11-23 | 2017-03-22 | 洛阳万基铝加工有限公司 | Finished product annealing process for double zero aluminum foils |
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2019
- 2019-03-27 CN CN201910238009.9A patent/CN109811283A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282863A (en) * | 2016-09-08 | 2017-01-04 | 江苏大亚铝业有限公司 | High-peeling strength food packaging aluminium foil high temperature negative pressure anneal technique |
| CN106521372A (en) * | 2016-11-23 | 2017-03-22 | 洛阳万基铝加工有限公司 | Finished product annealing process for double zero aluminum foils |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760766A (en) * | 2019-10-23 | 2020-02-07 | 江苏鼎胜新能源材料股份有限公司 | Aluminum material for power station air cooling system and preparation method thereof |
| 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 |
| CN115125459A (en) * | 2022-07-30 | 2022-09-30 | 神隆宝鼎新材料有限公司 | Method for inhibiting double-zero foil annealing thermal bulging |
| 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 |
| CN115927919A (en) * | 2022-11-14 | 2023-04-07 | 嘉兴维勒新材料有限公司 | Household baked aluminum foil with bright double surfaces and manufacturing method thereof |
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Application publication date: 20190528 |