CN101664792A - Engineering process for producing low-iron low-silicon 3004 alloy by directly cast-rolling electrolytic aluminium liquid - Google Patents
Engineering process for producing low-iron low-silicon 3004 alloy by directly cast-rolling electrolytic aluminium liquid Download PDFInfo
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Abstract
The invention relates to an engineering process for producing a low-iron low-silicon 3004 alloy by directly cast-rolling electrolytic aluminium liquid. The process comprises the procedures of alloy aluminium melting, ingredient adjusting, on-line refining for three times, standing, outgassing, grain refining, filtering, tilting cast-rolling, homogenizing, cold rolling, intermediate annealing, another cold rolling, full annealing, recoiling and packaging. The refining comprises powder spraying refining in a melting furnace and combined refining of on-line argon and carbon tetrachloride introducing. The annealing comprises high-temperature quick annealing, the intermediate annealing and the full annealing. During the cast-rolling, the temperature in a front box is 710-720 DEG C, and the cast-rolling speed is 600-900 mm/min. The product is the low-iron low-silicon 3004 alloy. The low-iron low-silicon 3004 alloy comprises 0.06-0.14 wt% of Si, 0.25-0.43 wt% of Fe, 0.012-0.14 wt% of Cu, 1.0-1.2 wt% of Mn, 0.8-1.0 wt% of Mg, at most 0.02 wt% of Zn, 0.015-0.03 wt% of Ti and the balance of Al. The invention has the characteristics of simple procedure, energy saving, emission reduction, goodalloy performance and low earring rate.
Description
Technical field
The invention belongs to the aluminium processing technique field, specifically relate to a kind of new technology of producing 3004 alloys with the direct casting of electrolytic aluminium liquid.
Background technology
3004 alloys belong to the aluminium alloy that heat treatment is not strengthened, and combining Al-Mn is that bianry alloy and Al-Mg are the advantage of bianry alloy, has the age softening phenomenon.At present, it is very ripe that hot rolling is produced 3004 alloy technologies for the base mode, and both at home and abroad methods of (Dc) casting that adopt are produced ingot casting earlier more, after a jar material is finally made in hot rolling and heat treatment.The hot rolling technology flow process is: aluminium ingot remelting → ingot casting → sawing → homogenising → mill face → hot rolling → cold rolling → part annealing → slightly cold rolling → full annealing → cold rolling → pack.The 3004H that adopts hot rolling to produce
19Special thin plate has the favorable mechanical characteristic, is suitable for making the deep-draw part, but in the hot rolling confession base process, iron loss is 2.5% during melting, and the crop end amount is 6%, and the face amount of milling is 5.5%, and hot rolling is produced 7mm thick strip final finished rate and is about 85%.If consider the waste product that ingot casting process and course of hot rolling produce, integrated yield only is 80%, therefore has the deficiency that investment is big, operation is many, operating cost is high.
3004 aluminium alloys are mainly used in pop-top can tank, seldom adopt casting and roll process production in the prior art, because the uniqueness of casting-rolling technology, cause the mechanical property such as tensile strength, percentage elongation, earing rate of casting material to be difficult to satisfy the production requirement of deep-draw part, when deep-draw, have technical problems such as easy to crack.Have only effective control component content, optimize casting and produce the technological parameter of each link, technology is more simplified, cost is lower, performance is more excellent, makes the great technical progress of making a breakthrough property of casting production.
US5714019 (application number 494897), promptly the WO97/01652 Patent publish casting produce 1-5mm tank body material, alloying component is manganese 0.8-2.0%, iron 0.4-1.5%, magnesium 0.3-1.5%, copper 0.1-0.4%, silicon≤0.4%, all the other are aluminium; Also can be manganese 0.2-1.0%, iron 0.1-0.5%, magnesium 1.0-3.0%, copper 0.2-0.5%, silicon≤0.3%, all the other be aluminium.The aluminum alloy strip of casting 1-5mm at first 580 °-610 ℃ annealing 2-16 hour down, quenched 1 minute in 450 °-560 ℃ following air coolings or water cooling after being cold rolled to 0.35-0.7mm, was cold rolled to 0.2-0.3mm again.
US4517034 (application number 483337), US4526625 (application number 483453) and patent families GB2123319 thereof, beverage can 3004 alloys of continuous casting production below 1 inch have been disclosed, alloying component is manganese 0.5-1.5%, iron 0.1-1.0%, magnesium 0.5-1.5%, silicon 0.1-0.5%, road 0.1-0.4%, copper≤0.25%, zinc≤0.25%, and all the other are aluminium.At first be heated to 950 ° of-1150 homogenising and handle, be cold-rolled to 75% back again, carry out crystallization more then, be cold-rolled to 50% at last 550 following stress relief annealings.
US3930895 (application number 463575) has disclosed a kind of 3004 distortion aluminium that are used for deep-draw processing, its manganese content is up to 1.6-3%, at first produce alloy melt, chill casting goes out metal stock under the water-cooled roll, being heated to 950 ° of-1150 homogenising then handles, then the back of air cooling at room temperature is cold rolling, and processing characteristics and structure property are improved in continuous chill casting deformation, and most hard phase particles are the 4-12 micron.
The JP150283 Patent publish under the two rollers of level the direct technology of continuous casting production 3004, alloying component is manganese≤3.0%, iron＜0.7%, magnesium 0.8-1.3%, copper＜0.25%, silicon＜0.3%, zinc＜0.25%, all the other are aluminium.When alloy aluminum liquid is flowed through level casting roller with 10
2℃/second-10
4℃/second speed cooling forms and contains above thick (MnFe) Al of 4 μ m
610mm aluminium sheet Deng metallic compound.
The CN200810123258.5 patent disclosure manufacture method of casting and rolling 3004 alloy deep punching material, the steps include: conventional casting 8.5mm blank earlier, carry out 300-400 ℃ * 10-14h annealing after being cold-rolled to 4.8-5.4mm again, multi-pass is cold-rolled to finished product thickness then, be incubated 2-4h down at 180-220 ℃ earlier, be incubated 15-25h down at 380-440 ℃ again.
Though above-mentioned patent all relates to the production technology of 3004 alloys, but US4517034, US4526625 and patent families GB2123319 thereof are disclosed to be continuous casting process technology, US3930895 is disclosed to be chill casting method technology, US5714019 is disclosed to be casting and roll process, but is not the directly cast-rolling electrolytic aluminium liquid production technology; What CN200810123258.5 adopted is conventional casting, has increased the conventional annealing operation, and has not related to high temperature rapid thermal annealing; And JP150283 disclosed be the two direct continuous casting and rolling technologies of roller of level, but do not consider the relation of aluminium liquid gravity and stress in the strip casting process, cause alloy blank about crystallization inhomogeneous, have influence on follow-up cold-rolling process.Simultaneously, the deficiency that above-mentioned all patents exist is that the purifying rate of aluminium alloy is low, impurity component is too high, directly have influence on the microcosmic texture and the punching performance of alloy, add a large amount of problems such as raw edges, earing rate height that produce in man-hour in the tank body deep-draw, production process can't stabilisation be carried out, cause inefficiency, cost waste.
Summary of the invention
The engineering process of 3004 alloys is produced in the direct casting of the short flow process of electrolytic aluminium liquid that purpose of the present invention aims to provide a kind of work simplification, energy-saving and emission-reduction, enhance productivity, save production cost, and produces the low-iron low-silicon 3004 alloy that process plastic is good, surface quality is good, earing rate is little.
Purpose of the present invention realizes by following manner:
Process route of the present invention is alloy aluminum liquid fusing → composition adjustment → 3 times refine on line → skim, leave standstill → degasification → crystal refinement → filtration → casting → homogenising → cold rolling → intermediate annealing → cold rolling → full annealing → batch, pack.
Produce 3004 alloys with premium properties, make earing rate less than 4%, must strict control technological process and the influence of the size of matching relationship, the especially chemical composition of various parameters, impurity content, W (Fe)/(Si) ratio, casting-rolling method, rolling and annealing process, grain structure and shape, second size, shape and factors such as distribution and texture mutually.
The injected volume of described alloy aluminum liquid fusing is the 60-70% electrolytic aluminium liquid, all the other be aluminium ingot or aluminium waste, through the getting the raw materials ready of strictness, prepare burden, feed in raw material, processing such as fusing, stirring, slag hitting, thermometric, sampling, refining.Feed in raw material and require calculating to need the various intermediate alloys of adding and the addition of former alloy addition in strict accordance with 3004 chemical compositions, take a sample in the time of between 730 °-760 ℃, composition is adjusted to the right place, guarantee to realize desired value (mass fraction, %) be: Si0.06-0.14, Fe0.25-0.43, Cu0.012-0.14, Mn1.0-1.2, Mg0.8-1.0, Zn≤0.02, Ti0.015-0.03, all the other are aluminium.
Sum up practical experience through the inventor, when described aluminum melt is handled, the solid aluminium waste material that suitably adds 30-40%, help grain refinement, thereby reduced the addition of fining agents such as Al-Ti-B silk, Al-3Ti-0.15C, solved the too high problem that can not satisfy the smelting technology needs of electrolytic aluminium liquid temperature again.
In the microscopic structure of 3004 alloy blanks, Fe, Si solid solubility are topmost organizational parameters with second mutually kind, size and the distribution, are determining the mechanical property and the rolling performance of alloy blank to a great extent.Described composition adjustment has reduced the impurity content of Fe, Si, reduced W (Fe)/w (Si) ratio, make the dilution to greatest extent in solid solution of Fe, Si impurity element, and separate out sizeable particle, help the formation of cubic texture, help improving plasticity, reduce the work hardening rate and the strength of materials, thereby improve rolling performance.Because Si is an objectionable impurities, can generate hard crisp Mg2Si mutually with Mg, reduce plasticity, and Fe plays the crystal grain thinning effect, but the Fe too high levels can strengthen deformation texture, increases earing rate, thus the content of Fe can not be too high can not be low excessively, for making Fe, Si element in the solid solution of alloy or separate out relative equilibrium, the alloy W (RE) of described invention is generally less than 0.005%.
Described technology is that directly cast-rolling electrolytic aluminium liquid is produced low-iron low-silicon 3004 alloy, be different from traditional ingot casting remelting, and the electrolytic aluminium liquid temperature is very high, and gas slag content exceeds much than the remelted aluminum ingot melt, so the cleaning molten difficulty is bigger.For this reason, this process using injection refining, CCl in smelting furnace
4Logical three refinings of argon refining of refining and holding furnace are with fully to cleaning molten.
Described refining has changed the way of former external refining, be to adopt argon gas (add 25% remove receive agent) refining and the online employing " argon gas, the refining of chlorine mist; two-stage is respectively 30ppi and 60ppi filter or ceramic filter tube and filters " of dusting in the smelting furnace, reduced operational sequence, improved degree of purification, the metallurgical quality of roll casting sheet is significantly improved, and hydrogen content is reduced to 0.16-0.35mL/100gAI.Consider that alloy contains magnesium, the present invention more preferably scheme is at CCl
4Also can adopt No. 2 refining agents to mix with sodium removing agent to dust between the logical argon refining of refining and holding furnace and carry out further refining.
3004 alloys and 1 * * * and 8 * * * alloy ratio, the melt crystallization wider range, resistance of deformation is bigger in the casting production process, limit portion crackle broad.3004 alloy flowabilities are relatively poor, stickiness is bigger, easy roll banding, and boundary lubrication is difficulty relatively.The inventor is by analyzing the influence to strip casting process of alloy phase diagram and research melt temperature, determine suitable casting temperature (oven temperature, degree promptly) scope, the oven temperature, degree is defined as 710-720 ℃ before the casting, improved the flowability of melt preferably, but simultaneously because melt temperature is too high, to also increase the cooling difficulty of casting roller, be 600-900mm/min for overcoming the above problems the roll casting speed that the inventor determines, and preferred casting section length is 45-55mm.
Because the serious problem of 3004 alloy roll bandings, what this technology boundary lubrication adopted is the spraying of hydraulic pressure gas flame, adopts the graphite spray gun to replenish spraying in case of necessity.
The temperature of described smelting furnace is 750-760 ℃; Preceding case liquid level is 102-118mm; The temperature of holding furnace is 745-760 ℃; During casting, the temperature of degasification tank remains on 740～750 ℃ during online degasification.
Simultaneously, the present invention has improved the lip structure, and what take is the multi-stage diffluence mode, and it is even to help the product chemical composition, axial uniformity when improving crystallization, preferred secondary shunting mode or three grades of shunting modes during production.
During casting, alterant does not adopt aluminium Ti, B grain graining agent commonly used, but neoteric electromagnetic casting rolling crystal grain thinning or Al-3Ti-0.15C grain refiner, can reduce or eliminate the adverse effect of the hard phase particle of TiB2, and addition is a 1.2kg/t aluminium.
The JP150283 patent disclosure method of the vertical double-roller rolling of level, but what the present invention adopted is that two roller tiltings do not have the roll gap casting, compared with former invention, changed the active force mode, considered the correlation of aluminium liquid gravity and stress in the operation of rolling, crystallization is more even up and down for the made-up belt that helps forming in strip casting process, thickness deviation is littler, make metal balance, dynamic balance, thermal balance etc. arrive optimum state, great to operations such as follow-up multi-pass is cold rolling influence, simultaneously can reduce the ripples line on made-up belt surface, flaws such as vertical band, effectively control panel shape and surface quality.The casting of of the present invention pair of roller tilting, thickness deviation are controlled at below the 10 μ m.
Microscopic structure behind the homogenizing annealing has determined the structural state of subsequent technique, and then influences the final performance of aluminium pot, so the temperature setting of homogenising and annealing and passage are very crucial technology.The technology of described invention is taked operations such as high-temperature homogenization, intermediate annealing, full annealing and stabilization processes, in the hope of satisfying the anisotropic strict demand of sheet material.When metal texture was each anisotropy, edge of materials can produce the system ear behind 3004 alloy deep punchings, the finishing of need cutting edge, and both waste materials, operation in the middle of increasing again improves a system jar cost, even the phenomenon that can occur ftractureing, leak jar.Therefore, in annealing and deformation process, precisely control various technological parameters, make the strict coupling of annealing temperature and rolling deformation rate.
Described invention is that the homogenising through 580 ℃ of-610 ℃ * 10-18h is handled in the vertical heater of unprotect atmosphere; it is more than 580 ℃ that temperature is set; can reduce separating out or it produce being assembled of compound particle so as far as possible; thereby reduce the disperse degree of particle of separating out, improve the prerequisite that the system ear forms to cause.
The blank that described invention forms is the casting volume of thick 6-8mm, wide 900-1500mm, carries out high temperature rapid thermal annealing be rolled to 2.2-3.8mm in aximal deformation value is cold rolling after, and annealing temperature is 500-600 ℃, and annealing time is 15S-2min; Slightly cold rolling through 15% following deflection then is rolled to 1.6-1.8mm when thick, the 12h that under 120-330 ℃ temperature, anneals, and the air cooling of coming out of the stove behind the insulation 2-4h is finished perfect recrystallization; At last the blank of perfect recrystallization is cold-rolled to finished product thickness through multi-pass, is warmed up to behind the 380-440 ℃ of insulation 2-3h, drop to 150 ℃ of air coolings of coming out of the stove, obtain final products with the stove cooling.
The inventor finds by ODF textile analysis, TEM, polarisation metallographic and performance test, the high temperature rapid thermal annealing of employing of the present invention is better than conventional annealing, help the improvement of microscopic structure dislocation configuration in the acquisition of strong cubic texture and the finished product sheet material, still remain with a small amount of cubic texture after aximal deformation value is cold rolling, anisotropy is less, 8 little system ears that 0 °/90 ° and 45 ° direction coexistences can occur, rather than only present 45 ° of system ears that are unfavorable for deep-draw processing, earing rate≤2.80% under the conventional annealing.
Because the cooling velocity of casting decision crystal grain is tiny, be evenly distributed, intermetallic compound size and quantity reduce in the dendrite, the degree of supersaturation of solute solid solution improves, make slab of the present invention in homogenising, be easy to form 1-5 μ m, equally distributed spherical particle, in cold-rolled process subsequently, be difficult for broken, when annealing, easily form evenly tiny after the random distribution, major part is a recrystal grain that waits of cube orientation, this has guaranteed that slab is formed a large amount of cubic textures, and can residue in to greatest extent among the finished product sheet material, become the best condition of rolling tank body material.And it is cold rolling to apply the small deformation amount before annealing recrystallization is handled, and can create conditions makes strip generate netted subgrain tissue, makes its forming core that becomes crystallization again, thereby forms more cubic texture, the earing rate when reducing deep-draw.
Described paying the utmost attention in cold rolling adopted the laser roughening roll, to destroy the oxide-film that strip casting process forms, by operation of rolling control metal flow to the anisotropic that improves material.
The present invention adopts the direct casting of the short flow process of electrolytic aluminium liquid to produce low-iron low-silicon 3004 alloy, with respect to the remelted aluminum ingot ingot casting hot rolling mode of production, saves reflow process; And with respect to the hot rolling mode save ingot casting, mill face, operations such as heating, hot rolling, power consumption reduces, and cost-saved about 2500 yuan/ton (not containing the investment of hot rolling line equipment and place), has the economic benefit of tangible cost advantage and Geng Gao.Simultaneously, the present invention carries out reasonable disposition and series innovation at aspects such as alloying component proportioning, aluminum melt processing, plate surface quality control, homogenizing annealing, cold rolling parameters, make 3004 alloy products obtain good mechanical performance and processing characteristics, the steel slab surface quality is good, grain structure is little, production board shape is smooth, dimensional accuracy is high.
By the product of the present invention that described technology makes, every performance is as follows:
As can be seen from the table, satisfy the national standard requirement fully by directly cast-rolling electrolytic aluminium liquid production low-iron low-silicon 3004 alloy product mechanical property of the present invention and processing performance.
The specific embodiment
Following examples are intended to illustrate the present invention rather than limitation of the invention further.
Embodiment 1
1. composition of the present invention is included as: silicon 0.12%, iron 0.43%, copper 0.09%, manganese 1.1%, magnesium 0.9%, zinc≤0.20%, titanium 0.02%, all the other are aluminium.
What adopt is 60-70% electrolytic aluminium liquid, 30-40% aluminium ingot or aluminium waste.
2. fusing and refining
Adopt fork truck to stir in the fusion process 1-2 time, with the acceleration fusing, the time interval was at 30 minutes.4-5min is stirred in the flat back of waiting, whipping temp is controlled at 750-760 ℃.
The argon gas injection refining is adopted in refining for the first time, and refining for the second time adopts special argon gas, carbon tetrachloride combined unit to carry out refine on line.It is clean to skim after refining is finished, and adjusts composition.
Begin to add the manganese ingot after fully stirring is finished.After stirring was finished, technology of the present invention can preferably adopt No. 2 refining agents and sodium removing agent mixing injection refining, and the time is 15 minutes, and addition is for by 2kg/t (contain sodium removing agent and account for 25%).
After refining was finished, it was clean to skim, and confirmed composition, adjusted temperature to 750-760 ℃, began down stove then.Carry out towards the argon refining at holding furnace behind the stove, refining time is 10 minutes, and the temperature of holding furnace is controlled at 750 ℃.
3. casting
A. online processing: online employing argon gas refining.The temperature of degasification tank remains on 745～750 ℃ during online degasification.
B. filter: the Rose Box temperature is controlled at 735～740 ℃.
C. rotten the processing: alterant adopts aluminium titanium carbon grain fining agent, point of addition be behind the Rose Box before before the case, addition is a 2kg/t aluminium.
D. preceding oven temperature, degree is controlled at 715～720 ℃.The casting section length is 45-50mm, and roll casting speed is 650mm/min.
4. cold rolling and annealing
A. homogenising: cast-rolling stock homogenising through 590 ℃ * 12h in the vertical heater of unprotect atmosphere is handled.
B. high temperature rapid thermal annealing: carry out high temperature rapid thermal annealing be rolled to 2.6mm in aximal deformation value is cold rolling after, annealing temperature is 560 ℃, and annealing time is 1min.
C. conventional annealing: slightly cold rolling through 15% deflection again, be rolled to 1.8mm when thick, the 12h that under 280 ℃ temperature, anneals, the air cooling of coming out of the stove behind the insulation 3h is finished perfect recrystallization.
D. multi-pass is cold rolling: the blank of perfect recrystallization is cold-rolled to finished product thickness through multi-pass, is warmed up to behind 380 ℃ of insulation 2-3h with the stove cooling, drop to 150 ℃ of air coolings of coming out of the stove, obtain final products.
5. batch
Product of the present invention after stretch bending is rectified, cuts, batched, is packaged into finished product after being rolled to required specification after the cooling.
Embodiment 2
1. composition of the present invention is included as: silicon 0.07%, iron 0.28%, copper 0.06%, manganese 1.0%, magnesium 0.8%, zinc≤0.20%, titanium 0.015-0.03%, all the other are aluminium.
What adopt is 60-70% electrolytic aluminium liquid, 30-40% aluminium ingot or aluminium waste.
2. fusing and refining
Adopt fork truck to stir in the fusion process 1-2 time, with the acceleration fusing, the time interval was at 30 minutes.4-5min is stirred in the flat back of waiting, whipping temp is controlled at 750-755 ℃.
The argon gas injection refining is adopted in refining for the first time, and refining for the second time adopts special argon gas, carbon tetrachloride combined unit to carry out refine on line.It is clean to skim after refining is finished, and adjusts composition.
Begin to add the manganese ingot after fully stirring is finished.After stirring was finished, technology of the present invention can preferably adopt No. 2 refining agents and sodium removing agent mixing injection refining, and the time is 15 minutes, and addition is for by 2kg/t (contain sodium removing agent and account for 25%).
After refining was finished, it was clean to skim, and confirmed composition, adjusted temperature to 750-755 ℃, began down stove then.Carry out towards the argon refining at holding furnace behind the stove, refining time is 10 minutes, and the temperature of holding furnace is controlled at 750 ℃.
3. casting
A. online processing: online employing argon gas refining.The temperature of degasification tank remains on 740～750 ℃ during online degasification.
B. filter: the Rose Box temperature is controlled at 730～735 ℃.
C. rotten the processing: alterant adopts aluminium titanium carbon grain fining agent, point of addition be behind the Rose Box before before the case, addition is a 2kg/t aluminium.
D. preceding oven temperature, degree is controlled at 710～715 ℃.The casting section length is 45-48mm, and roll casting speed is 680mm/min.
4. cold rolling and annealing
A. homogenising: cast-rolling stock homogenising through 580 ℃ * 14h in the vertical heater of unprotect atmosphere is handled.
B. high temperature rapid thermal annealing: carry out high temperature rapid thermal annealing be rolled to 2.45mm in aximal deformation value is cold rolling after, annealing temperature is 590 ℃, and annealing time is 45S.
C. conventional annealing: slightly cold rolling through 15% deflection again, be rolled to 1.62mm when thick, the 12h that under 320 ℃ temperature, anneals, the air cooling of coming out of the stove behind the insulation 4h is finished perfect recrystallization.
D. multi-pass is cold rolling: the blank of perfect recrystallization is cold-rolled to finished product thickness through multi-pass, is warmed up to behind 400 ℃ of insulation 2-3h with the stove cooling, drop to 150 ℃ of air coolings of coming out of the stove, obtain final products.
5. batch
Product of the present invention after stretch bending is rectified, cuts, batched, is packaged into finished product after being rolled to required specification after the cooling.
Claims (12)
1, directly cast-rolling electrolytic aluminium liquid is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that, a kind of low-iron low-silicon 3004 wrought aluminium alloies, chemical composition (mass fraction, %) be Si0.06-0.14, Fe0.25-0.43, Cu0.012-0.14, Mn1.0-1.2, Mg0.8-1.0, Zn≤0.02, Ti0.015-0.03, all the other are aluminium;
The process of producing above-mentioned 3004 alloys is the short flow process tilting of electrolytic aluminium liquid casting working systems, and its operation comprises the fusing of alloy aluminum liquid, composition adjustment, 3 refine on line, leaves standstill, degasification, crystal refinement, filtration, tilting casting, homogenising, cold rolling, intermediate annealing, cold rolling, full annealing, batch packing;
Described alloy aluminum liquid is 60-70% electrolytic aluminium liquid, 30-40% aluminium ingot or aluminium waste;
Described refining is injection refining and CCl4 refining and logical three refine on line of argon refining of holding furnace in the smelting furnace;
Described annealing comprises high temperature rapid thermal annealing, intermediate annealing, full annealing or stabilization processes;
Described casting is that tilting does not have the roll gap casting, during casting before the oven temperature, degree be 710-720 ℃, roll casting speed is 600-900mm/min.
2, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that, the mass fraction that described composition is adjusted into Si is controlled at 0.06-0.14%, the mass fraction of Fe is controlled at 0.25-0.43%, and W (Si)/W (Fe) ratio is less than 0.005%.
3, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that, described refining, be filtered into and adopt argon gas injection refining and online employing " argon gas+carbon tetrachloride injection refining+two-stage is respectively 30ppi and 50ppi filter or ceramic filter tube and filters " in the smelting furnace.
4, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that the casting section length is 44-55mm, and the lip structure is taked secondary or multi-stage diffluence mode.
5, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that the temperature of smelting furnace is 750-760 ℃; Preceding case liquid level is 102-118mm; The temperature of holding furnace is 745-760 ℃; During casting, the temperature of degasification tank remains on 740～750 ℃ during online degasification.
6, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that, the alterant that described crystal refinement is adopted is Al-3Ti-1B grain refiner or Al-3Ti-0.15C grain refiner, and addition is a 1.2kg/t aluminium.
7, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that the boundary lubrication of casting roller when adopting flame-spraying as casting adopts the graphite spray gun to replenish spraying in case of necessity.
8, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that, described tilting casting is two roller tilting castings, and thickness deviation is controlled at below the 10 μ m.
9, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process; it is characterized in that; described evenly turning in the annealing of unprotect atmosphere through the homogenising of 580 ℃ of-610 ℃ * 10-18h handled, and it is more than 580 ℃ that temperature is set.
10, directly cast-rolling electrolytic aluminium liquid according to claim 1 is produced the low-iron low-silicon 3004 alloy engineering process, it is characterized in that, described cold rolling, annealing steps is:
(1) carry out high temperature rapid thermal annealing be rolled to 2.2-3.8mm in aximal deformation value is cold rolling after, annealing temperature is 500-600 ℃, and annealing time is 15S-2min;
(2) slightly cold rolling through 15% following deflection then is rolled to 1.6-1.8mm when thick, the 12h that under 120-330 ℃ temperature, anneals, and the air cooling of coming out of the stove behind the insulation 2-4h is finished perfect recrystallization;
(3) at last the blank of perfect recrystallization is cold-rolled to finished product thickness through multi-pass, is warmed up to behind the 380-440 ℃ of insulation 2-3h, drop to 150 ℃ of air coolings of coming out of the stove, obtain final products with the stove cooling.
11, refining according to claim 3 is characterized in that, preferably No. 2 refining agents of employing and sodium removing agent mixing injection refining between CCl4 refining and the logical argon refining of holding furnace.
12, according to claim 1 or 10 described cold rolling, it is characterized in that, can preferably adopt the laser roughening roll.
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Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101871052A (en) * | 2010-06-28 | 2010-10-27 | 江阴新仁科技有限公司 | Method for purifying aluminum and aluminum alloy melt |
| CN102168212A (en) * | 2011-04-13 | 2011-08-31 | 河南顺源宇祥铝业科技有限公司 | Aluminium alloy lamp cap material and production method of the aluminium alloy lamp cap material |
| CN102181754A (en) * | 2011-03-30 | 2011-09-14 | 江阴新仁科技有限公司 | Light gauge aluminum foil woolen produced with AL-Ti-C wire refiner and preparation method |
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| CN104775060A (en) * | 2015-03-27 | 2015-07-15 | 江苏大学 | Production and heat treatment method of aluminum alloy continuous-casting continuous-rolling billet |
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| CN109468554A (en) * | 2018-11-19 | 2019-03-15 | 广西柳州银海铝业股份有限公司 | The removing method of cold rolling aluminium flanging part annealing hickie |
| CN109881031A (en) * | 2019-03-01 | 2019-06-14 | 江苏鼎胜新能源材料股份有限公司 | A kind of production method of 7072 alloy blank |
| CN110691858A (en) * | 2017-06-07 | 2020-01-14 | 株式会社Uacj | Hollow aluminum alloy tubular profile and piping material for heat exchanger |
| CN111074107A (en) * | 2019-12-26 | 2020-04-28 | 河南明泰科技发展有限公司 | 3004 aluminum foil and preparation method and application thereof |
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| CN111108223A (en) * | 2017-09-20 | 2020-05-05 | 株式会社Uacj | Aluminum alloy plate for bottle and can and method for producing same |
| CN111286644A (en) * | 2020-03-23 | 2020-06-16 | 江苏鼎胜新能源材料股份有限公司 | Method for manufacturing aluminum foil for aluminum corrugated pipe |
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| CN112159915A (en) * | 2020-09-27 | 2021-01-01 | 酒泉钢铁(集团)有限责任公司 | Method for preparing 1070 aluminum alloy strip blank by using copper roller sleeve casting and rolling |
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| CN114393037A (en) * | 2021-12-16 | 2022-04-26 | 内蒙古联晟新能源材料有限公司 | Process method for producing double-zero foil material by continuous casting and rolling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871052A (en) * | 2010-06-28 | 2010-10-27 | 江阴新仁科技有限公司 | Method for purifying aluminum and aluminum alloy melt |
| CN101871052B (en) * | 2010-06-28 | 2012-06-13 | 江阴新仁科技有限公司 | Method for purifying aluminum and aluminum alloy melt |
| CN102181754B (en) * | 2011-03-30 | 2012-11-14 | 江阴新仁科技有限公司 | Light gauge aluminum foil woolen produced with AL-Ti-C wire refiner and preparation method |
| CN102181754A (en) * | 2011-03-30 | 2011-09-14 | 江阴新仁科技有限公司 | Light gauge aluminum foil woolen produced with AL-Ti-C wire refiner and preparation method |
| CN102168212A (en) * | 2011-04-13 | 2011-08-31 | 河南顺源宇祥铝业科技有限公司 | Aluminium alloy lamp cap material and production method of the aluminium alloy lamp cap material |
| CN102218454A (en) * | 2011-04-19 | 2011-10-19 | 马鞍山市新马精密铝业有限公司 | Production technology of aluminum alloy circular pipe for producing photosensitive drum of fine definition laser printer |
| CN102319735A (en) * | 2011-06-16 | 2012-01-18 | 东南铝业（中国）有限公司 | A kind of casting-rolling method of aluminium alloy plate |
| CN102847898A (en) * | 2011-07-01 | 2013-01-02 | 湖南创元铝业有限公司 | Method for directly cast-rolling electrolytic molten aluminum |
| CN102847898B (en) * | 2011-07-01 | 2016-05-25 | 湖南创元铝业有限公司 | A kind of electrolytic aluminium liquid directly carries out the method for casting production |
| CN103060648A (en) * | 2011-10-24 | 2013-04-24 | 贵州华科铝材料工程技术研究有限公司 | Titanium boron compound modified high-performance aluminum alloy material and preparation method thereof |
| CN103060648B (en) * | 2011-10-24 | 2015-04-01 | 贵州华科铝材料工程技术研究有限公司 | Titanium boron compound modified high-performance aluminum alloy material and preparation method thereof |
| CN102389953A (en) * | 2011-11-21 | 2012-03-28 | 重庆捷和铝业有限公司 | Method for manufacturing 3004 casting-rolling coil blank |
| CN103276232B (en) * | 2013-05-17 | 2016-02-03 | 山东创新金属科技股份有限公司 | A kind of low segregation layer thickness preparation process of aluminium alloy |
| CN103255328A (en) * | 2013-05-17 | 2013-08-21 | 山东创新金属科技股份有限公司 | High-strength and high-toughness 7A04 aluminium alloy and preparation method thereof |
| CN103276232A (en) * | 2013-05-17 | 2013-09-04 | 山东创新金属科技股份有限公司 | Preparation technique of aluminum alloy with low-thickness segregation layer |
| CN103572119A (en) * | 2013-11-05 | 2014-02-12 | 吴高峰 | Aluminum alloy plate for high temperature resistant packaging tin |
| CN103722140A (en) * | 2014-01-17 | 2014-04-16 | 上海西重所重型机械成套有限公司 | Continuous cast-rolling process and continuous cast-rolling process system for magnesium alloy plate and strip |
| CN104451297A (en) * | 2014-12-30 | 2015-03-25 | 辽宁忠旺集团有限公司 | Casting technology of aluminum bronze series aluminum alloy circular ingots |
| CN104775060B (en) * | 2015-03-27 | 2017-08-04 | 江苏大学 | A kind of production of aluminum alloy continuous casting tandem rolling base and heat treatment method |
| CN104775060A (en) * | 2015-03-27 | 2015-07-15 | 江苏大学 | Production and heat treatment method of aluminum alloy continuous-casting continuous-rolling billet |
| CN104846242A (en) * | 2015-05-12 | 2015-08-19 | 福建省闽发铝业股份有限公司 | High-strength aluminum alloy |
| CN106337141B (en) * | 2015-07-14 | 2018-07-20 | 上海帅翼驰铝合金新材料有限公司 | A method of improving ADC6 aluminium alloy ingots performances |
| CN106337141A (en) * | 2015-07-14 | 2017-01-18 | 上海帅翼驰铝合金新材料有限公司 | Method for improving ADC6 aluminum alloy ingot performances |
| CN105401027A (en) * | 2015-12-17 | 2016-03-16 | 西南铝业（集团）有限责任公司 | Preparing technology of 7050 aluminum alloy cast ingot |
| CN105543528A (en) * | 2015-12-18 | 2016-05-04 | 云南云铝润鑫铝业有限公司 | Method for directly producing 6xxx-series aluminum alloy from high silicon electrolytic aluminum liquid |
| CN106811628A (en) * | 2017-01-19 | 2017-06-09 | 江苏鼎胜新能源材料股份有限公司 | A kind of method that casting and roll process produces power battery case aluminium strip |
| CN106811628B (en) * | 2017-01-19 | 2018-06-19 | 江苏鼎胜新能源材料股份有限公司 | A kind of method of casting and roll process production power battery case aluminium strip |
| CN107529562A (en) * | 2017-05-22 | 2018-01-02 | 商丘阳光铝材有限公司 | Directly cast-rolling electrolytic aluminium liquid top grade double-zero aluminum foil blank production technology |
| CN110691858A (en) * | 2017-06-07 | 2020-01-14 | 株式会社Uacj | Hollow aluminum alloy tubular profile and piping material for heat exchanger |
| CN111108223A (en) * | 2017-09-20 | 2020-05-05 | 株式会社Uacj | Aluminum alloy plate for bottle and can and method for producing same |
| CN109468554A (en) * | 2018-11-19 | 2019-03-15 | 广西柳州银海铝业股份有限公司 | The removing method of cold rolling aluminium flanging part annealing hickie |
| CN109468554B (en) * | 2018-11-19 | 2020-12-01 | 广西柳州银海铝业股份有限公司 | Method for eliminating white spot of cold-rolled aluminum coil edge annealing |
| CN109457199A (en) * | 2018-12-05 | 2019-03-12 | 天津忠旺铝业有限公司 | A kind of processing technology of 7 line aluminium alloy sheet band of annealed state |
| CN109881031A (en) * | 2019-03-01 | 2019-06-14 | 江苏鼎胜新能源材料股份有限公司 | A kind of production method of 7072 alloy blank |
| CN111074107A (en) * | 2019-12-26 | 2020-04-28 | 河南明泰科技发展有限公司 | 3004 aluminum foil and preparation method and application thereof |
| CN111074110A (en) * | 2020-01-10 | 2020-04-28 | 广西百矿润泰铝业有限公司 | Production method of aluminum and aluminum alloy plate strip for new energy power battery case |
| CN111286644A (en) * | 2020-03-23 | 2020-06-16 | 江苏鼎胜新能源材料股份有限公司 | Method for manufacturing aluminum foil for aluminum corrugated pipe |
| CN111286644B (en) * | 2020-03-23 | 2021-09-10 | 江苏鼎胜新能源材料股份有限公司 | Method for manufacturing aluminum foil for aluminum corrugated pipe |
| CN115768912A (en) * | 2020-04-15 | 2023-03-07 | 诺维尔里斯公司 | Aluminum alloys produced from recycled aluminum alloy scrap |
| CN111690856A (en) * | 2020-07-08 | 2020-09-22 | 甘肃东兴铝业有限公司 | Method for preparing 5052 aluminum alloy strip |
| CN111763857A (en) * | 2020-07-08 | 2020-10-13 | 甘肃东兴铝业有限公司 | Method for preparing 5182 aluminum alloy strip blank |
| CN112159915A (en) * | 2020-09-27 | 2021-01-01 | 酒泉钢铁(集团)有限责任公司 | Method for preparing 1070 aluminum alloy strip blank by using copper roller sleeve casting and rolling |
| CN112831692A (en) * | 2020-12-28 | 2021-05-25 | 浙江永杰铝业有限公司 | Aluminum-manganese alloy strip and preparation method thereof |
| CN113388763A (en) * | 2021-06-16 | 2021-09-14 | 遵义恒佳铝业有限公司 | Method for improving corrosion resistance of aluminum plate |
| CN114393037A (en) * | 2021-12-16 | 2022-04-26 | 内蒙古联晟新能源材料有限公司 | Process method for producing double-zero foil material by continuous casting and rolling |
| CN114410997A (en) * | 2021-12-16 | 2022-04-29 | 内蒙古联晟新能源材料有限公司 | Production process of 1235A aluminum alloy foil |
| CN115247239A (en) * | 2021-12-30 | 2022-10-28 | 兰州理工大学 | Aluminum alloy strip for power battery shell and production method thereof |
| CN115247239B (en) * | 2021-12-30 | 2023-05-26 | 兰州理工大学 | Aluminum alloy strip for power battery shell and production method thereof |
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