CN103042030A - Grain control method for production of ultrawide double-zero aluminum foil blanks by electrolytic aluminum liquid cast-rolling process - Google Patents
Grain control method for production of ultrawide double-zero aluminum foil blanks by electrolytic aluminum liquid cast-rolling process Download PDFInfo
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Abstract
The invention relates to a grain control method for production of ultrawide double-zero aluminum foil blanks by electrolytic aluminum liquid cast-rolling process. A smelting furnace holding solid aluminum and electrolytic aluminum liquid in a horizontal aluminum cast-rolling line is used for smelting for 4-10 hours at the low temperature of 720-735 DEG C, the aluminum liquid is heated to 740-750 DEG C in 20-30 minutes, the aluminum liquid is refined after alloy preparation, the aluminum liquid is allowed to stand for 30-50 minutes after refining and is transferred to a standing furnace, the aluminum liquid in the standing furnace is evenly mixed for 10 minutes every 4-6 hours by Ar and CCl4, the aluminum liquid in the standing furnace flows into a filter tank through a degassing tank and a channel and flows to a front tank through the filter tank and the channel, and the aluminum liquid is injected into gaps of casting rollers by a casting spile. With the process coordinating with equipment, adjustable temperature and speed of the aluminum liquid in the casting spile are achieved, and even transverse and longitudinal grain structures of a casting slab can be obtained.
Description
Technical field
The present invention relates to a kind of direct grain size control method with the super wide cut double-zero aluminum foil of electrolytic aluminium liquid casting and roll process production blank, belong to aluminium and aluminum alloy processing technology field.
Background technology
Present 70% left and right sides aluminium foil is produced with the slab hot-rolling blank, and domestic then 80% above aluminium foil adopts casting and roll process production.2005, the domestic first Application cast-rolling stock of Yunnan Xinmeilu Aluminum Foil Co., Ltd. mass-produced the aluminium foil used in capacitor of 0.005mm thickness.2010, North China Chinalco first adopted remelted aluminum ingot melting casting-rolling technology to produce 1700mm fabric width double-zero aluminum foil blank.
Directly larger than the difficulty of producing the double-zero aluminum foil blank with remelted aluminum ingot with the super wide cut double-zero aluminum foil of electrolytic aluminium liquid production blank, main cause is the electrolytic aluminium liquid excess Temperature, and non-spontaneous nucleation is less in the aluminium liquid, causes the control of cast-rolled block grain size more difficult.The Casting Rolled Sheet original grain is thicker, just is difficult to fragmentation in the cold-rolled process, has the position processing speed of large crystal grain large, and the distortion difficulty can cause the inhomogeneous of sheet material tissue and performance, thereby is not easy control when aluminum foil rolling.Prior art does not solve this difficult problem at present.
Summary of the invention
The objective of the invention is for an above-mentioned difficult problem, a kind of direct grain size control method with the super wide cut double-zero aluminum foil of electrolytic aluminium liquid casting and roll process production blank is provided, make Casting Rolled Sheet obtain longitudinally and laterally uniform grain structure.
The present invention is as follows with the grain size control method of the super wide cut double-zero aluminum foil of electrolytic aluminium liquid casting and roll process production blank:
[1] in the smelting furnace in the horizontal aluminium casting and rolling the production line 40%～50% solid aluminium material is arranged, all the other are electrolytic aluminium liquid, melting is 4～10 hours under 720 ℃～735 ℃ low temperature, then in 20～30min, temperature of aluminum liquid is risen to 740 ℃～750 ℃, carry out alloy preparation, alloying component is qualified carries out refining afterwards to aluminium liquid, and refining changes aluminium liquid over to standing furnace after finishing to leave standstill 30 ~ 50min;
[2] Ar+CCl is used at every interval 4～6 hours in the standing furnace after the converter
4To aluminium liquid uniform stirring 10min;
[3] the aluminium liquid in the standing furnace through degasification tank, chute enter Rose Box, again from Rose Box through chute to front case, inject the Casting Roller roll gap through lip and be rolled, add aluminium titanium boron wire in the degasification tank porch in aluminium liquid;
Wherein: add from standing furnace stove eye to the degasification tank aluminium titanium boron wire front the 50 ~ 80mm of point, degasification tank outlet, degasification tank in the middle part of the Rose Box chute, Rose Box exports and the position of entrance arranges diameter changing device, realize the multi-stage reducing on the chute, with the turbulence of reinforced aluminum liquid at chute, increase the thinning effect of aluminium titanium boron wire.
Described diameter changing device is to be made of a riser, in the bottom of riser the reducing hole is arranged, and the reducing hole is the two ends toroidal.
In the described front case height-adjustable baffle plate is set, temperature, the speed in dynamic adjustments aluminium liquid whole cross section in lip are uniform and stable, guarantee that Casting Rolled Sheet all obtains even small grains tissue longitudinally and laterally.
Method of the present invention has following characteristics:
1, melts down rate, low smelting heat, the instantaneous method that is rapidly heated by solid material at high proportion, effectively increase the inner non-spontaneous nucleation quantity of aluminium liquid.
2, aluminium liquid regularly stirs in the standing furnace, prevents that standing furnace inner surface aluminium liquid from producing coarse grains because of the long-time heating burning.
3, adopt multi-stage reducing Effective Raise aluminium titanium boron wire active ingredient to utilize, guarantee grain refining effect.
4, front case adopts the baffle plate that online dynamic adjustments aluminium flow quantity distributes, and realizes that aluminium liquid temperature, speed in lip are dynamically adjustable, guarantees at Casting Rolled Sheet in length and breadth to obtaining uniform grain structure.
Method of the present invention has reached following effect: produce fabric width 1750mm, 1920mm cast-rolling stock stable rolling to 0.0065mm, pin hole is all at 200/m
2Below, best at 70/m
2In.Produce fabric width degree 1860～2100mm cast-rolling stock and be rolled down to 0.0065mm, indices reaches the requirement of electronics paper tinsel fully, and pin hole is at 70/m
2Below.Be rolled down to 0.006mm(ultra-thin) time, 57～200/m of pin hole
2, be rolled down to 0.0055mm, 800/m of pin hole
2Below.
Description of drawings
Fig. 1 is equipment component of the present invention and multi-stage reducing structural representation.
Fig. 2 is diameter changing device structural representation of the present invention.
Fig. 3 is the A-A(riser among Fig. 2) profile.
Among the figure: 1-smelting furnace, 2-standing furnace, 3-degasification tank, case before the 4-Rose Box, 5-, 6-Casting Roller, 7-diameter changing device, case adjustable baffle plate before the 8-aluminium titanium boron wire, 9-, 10-aluminium Casting Rolled Sheet, 11-chute, 12-reducing hole, 13-riser.
The specific embodiment
Embodiment 1:
[1] horizontal aluminium casting and rolling the production line, in 40% solid material ratio drop into remelted aluminum ingot and/or with the casting waste material, the solid material evenly spreads to whole smelting furnace bottom, after advancing electrolytic aluminium liquid, melting is 10 hours under 720 ℃ low temperature, then in 30min temperature of aluminum liquid is risen to 740 ℃, carries out alloy preparation, alloying component is qualified carries out refining afterwards to aluminium liquid, and refining changes aluminium liquid over to standing furnace after finishing to leave standstill 35min;
[2] Ar+CCl is used at every interval 4 hours in the standing furnace after the converter
4To aluminium liquid uniform stirring 10min;
[3] case before degasification tank, Rose Box arrive of the aluminium liquid in the standing furnace injects between two Casting Roller roll gap through lip and is rolled, add aluminium titanium boron wire in aluminium liquid in the degasification tank porch, aluminium liquid enters Rose Box through chute, again from Rose Box through chute to front case, inject the Casting Roller roll gap through lip.
Wherein: add from standing furnace stove eye to the degasification tank aluminium titanium boron wire that front the 50 ~ 80mm of point, degasification tank 3 export, degasification tank to Rose Box chute 11 middle parts, Rose Box 4 exports and the position of entrance arranges diameter changing device 7(as shown in Figure 1), realize the multi-stage reducing on the chute, with the turbulence of reinforced aluminum liquid at chute, increase the thinning effect of aluminium titanium boron wire;
Described diameter changing device 7 is to be made of a riser 13, as shown in Figure 2, in the bottom of riser 13 reducing hole 12 is arranged, and reducing hole 12 is the two ends toroidal, as shown in Figure 3.
Described front case 5 is interior to arrange height-adjustable baffle plate 9, and temperature, the speed in dynamic adjustments aluminium liquid whole cross section in lip are uniform and stable, guarantee that Casting Rolled Sheet all obtains even small grains tissue longitudinally and laterally.
Embodiment 2:
[1] horizontal aluminium casting and rolling the production line, in 45% solid material ratio drop into remelted aluminum ingot and/or with the casting waste material, the solid material evenly spreads to whole smelting furnace bottom, after advancing electrolytic aluminium liquid, melting is 5 hours under 735 ℃ low temperature, then in 20min temperature of aluminum liquid is risen to 750 ℃, carries out alloy preparation, alloying component is qualified carries out refining afterwards to aluminium liquid, and refining changes aluminium liquid over to standing furnace after finishing to leave standstill 45min;
[2] Ar+CCl is used at every interval 5 hours in the standing furnace after the converter
4To aluminium liquid uniform stirring 10min; As follows embodiment 1.
The fabric width 1750mm that above implementation method is produced, 1920mm cast-rolling stock stable rolling are to 0.0065mm, and pin hole is all at 200/m
2Below, best at 70/m
2In.
Claims (3)
1. the crystal grain control method of the super wide cut double-zero aluminum foil of electrolytic aluminium liquid casting and roll process production blank is characterized in that carrying out according to the following steps:
[1] in the smelting furnace in the horizontal aluminium casting and rolling the production line 40%～50% solid aluminium material is arranged, all the other are electrolytic aluminium liquid, melting is 4～10 hours under 720 ℃～735 ℃ low temperature, then in 20～30min, temperature of aluminum liquid is risen to 740 ℃～750 ℃, carry out alloy preparation, alloying component is qualified carries out refining afterwards to aluminium liquid, and refining changes aluminium liquid over to standing furnace after finishing to leave standstill 30 ~ 50min;
[2] Ar+CCl is used at every interval 4～6 hours in the standing furnace after the converter
4To aluminium liquid uniform stirring 10min;
[3] the aluminium liquid in the standing furnace through degasification tank, chute enter Rose Box, again from Rose Box through chute to front case, inject the Casting Roller roll gap through lip and be rolled, add aluminium titanium boron wire in the degasification tank porch in aluminium liquid;
Wherein: add from standing furnace stove eye to the degasification tank aluminium titanium boron wire front the 50 ~ 80mm of point, degasification tank outlet, degasification tank in the middle part of the Rose Box chute, Rose Box exports and the position of entrance arranges diameter changing device, realize the multi-stage reducing on the chute, with the turbulence of reinforced aluminum liquid at chute, increase the thinning effect of aluminium titanium boron wire.
2. the crystal grain control method of the super wide cut double-zero aluminum foil of electrolytic aluminium liquid casting and roll process according to claim 1 production blank is characterized in that described diameter changing device is to be made of a riser, in the bottom of riser the reducing hole is arranged, and the reducing hole is the two ends toroidal.
3. the crystal grain control method of the super wide cut double-zero aluminum foil of electrolytic aluminium liquid casting and roll process production blank is characterized in that in the described front case height-adjustable baffle plate being set.
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| CN201210582373.5A CN103042030B (en) | 2012-12-28 | 2012-12-28 | Grain control method for production of ultrawide double-zero aluminum foil blanks by electrolytic aluminum liquid cast-rolling process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659283A (en) * | 2013-11-09 | 2014-03-26 | 无锡华玉铝业有限公司 | Automated energy-saving melting, casting and rolling production line |
| CN104611589A (en) * | 2014-12-29 | 2015-05-13 | 镇江鼎胜铝业股份有限公司 | Method for producing double-zero aluminum foil blank through ultrasonic casting-rolling |
| CN105605918A (en) * | 2015-12-25 | 2016-05-25 | 天津恒天冠辰科技有限公司 | Smelting furnace diversion tube |
| CN113877283A (en) * | 2021-11-09 | 2022-01-04 | 鼎圭新材料科技(上海)有限公司 | Filter equipment is used in production of two zero aluminium foils |
| CN114879778A (en) * | 2022-04-19 | 2022-08-09 | 晟通科技集团有限公司 | Aluminum liquid temperature control device and aluminum liquid temperature control method |
| CN115194106A (en) * | 2022-07-20 | 2022-10-18 | 郑州大学 | Device and method for preparing wide continuous casting and rolling aluminum alloy plate |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659283A (en) * | 2013-11-09 | 2014-03-26 | 无锡华玉铝业有限公司 | Automated energy-saving melting, casting and rolling production line |
| CN104611589A (en) * | 2014-12-29 | 2015-05-13 | 镇江鼎胜铝业股份有限公司 | Method for producing double-zero aluminum foil blank through ultrasonic casting-rolling |
| CN104611589B (en) * | 2014-12-29 | 2016-08-24 | 江苏鼎胜新能源材料股份有限公司 | Use the method that ultrasonic casting produces double-zero aluminum foil blank |
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| CN105605918B (en) * | 2015-12-25 | 2018-06-22 | 秦皇岛戴卡兴龙轮毂有限公司 | A kind of smelting furnace diversion pipe |
| CN113877283A (en) * | 2021-11-09 | 2022-01-04 | 鼎圭新材料科技(上海)有限公司 | Filter equipment is used in production of two zero aluminium foils |
| CN114879778A (en) * | 2022-04-19 | 2022-08-09 | 晟通科技集团有限公司 | Aluminum liquid temperature control device and aluminum liquid temperature control method |
| CN115194106A (en) * | 2022-07-20 | 2022-10-18 | 郑州大学 | Device and method for preparing wide continuous casting and rolling aluminum alloy plate |
| CN115194106B (en) * | 2022-07-20 | 2023-08-08 | 郑州大学 | Device and method for preparing wide continuous casting and rolling aluminum alloy plate |
| CN116809878A (en) * | 2022-07-20 | 2023-09-29 | 郑州大学 | Aluminum alloy plate continuous casting and rolling method based on multisource ultrasonic auxiliary quality improvement |
| CN116809878B (en) * | 2022-07-20 | 2024-04-23 | 郑州大学 | Aluminum alloy plate continuous casting and rolling method based on multisource ultrasonic auxiliary quality improvement |
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