CN107058771A - Alloy double zero foil of table ware 8006 and preparation method thereof - Google Patents
Alloy double zero foil of table ware 8006 and preparation method thereof Download PDFInfo
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- CN107058771A CN107058771A CN201710033686.8A CN201710033686A CN107058771A CN 107058771 A CN107058771 A CN 107058771A CN 201710033686 A CN201710033686 A CN 201710033686A CN 107058771 A CN107058771 A CN 107058771A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C—CHEMISTRY; METALLURGY
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- 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
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Abstract
The invention discloses a kind of alloy double zero foil of table ware 8006 and preparation method thereof, this method includes：(1) electrolytic aluminium liquid is obtained into aluminum melt with carrying out mixed smelting containing aluminium waste；(2) Slag treatment is refined and taken off to aluminum melt, obtains refinery molten aluminium；(3) into refinery molten aluminium, online addition aluminium titanium boron wire fining agent is refined, and obtains refining aluminium liquid；(4) online degasification, on-line filtration are carried out to refinement aluminium liquid using inert gas, the final aluminium liquid of case and refinement impurity before obtaining；(5) final aluminium liquid is subjected to casting production, obtains cast-rolling stock；(6) by cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, second annealing and paper tinsel are rolled, and obtain 8006 alloy double zero foils.This method is that a kind of energy consumption is low, it is low to pollute small, cost, the alloy double zero foil thickness of table ware 8006 obtained by production is not less than 210MPa up to 0.006~0.0075mm, tensile strength simultaneously, elongation percentage is not less than 8%, and the production method of the more excellent table ware aluminium foil of surface quality.
Description
Technical field
The invention belongs to alloy foil processing technical field, specifically, closed the present invention relates to table ware 8006
Golden double zero foil and preparation method thereof.
Background technology
Table ware aluminium foil have recycle, barrier is strong, economize on resources, various heating, sanitation and hygiene, safety guarantee
Etc. multiple characteristics, the major alloy of table ware aluminium foil has 1100,1145,8011,8006 etc., general table ware aluminium foil
Supply of material thickness is not more than 0.15mm.With the development of economic technology, requirement of the market to table ware aluminium foil each side is increasingly
High, it is desirable to which that the thickness of tableware aluminium foil is further thinned, tensile strength increase, elongation percentage further increases, and surface quality is more excellent
It is different.But the table ware aluminium foil produced at present is substantially thick paper tinsel, and mechanical property, surface quality are unable to reach table ware aluminium
The production requirement of paper tinsel, and using hot rolling production, high energy consumption, pollution are big, cost is high.
Therefore, the technology of existing production table ware aluminium foil is further improved.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of alloy double zero foil of table ware 8006 and preparation method thereof, and this method is that a kind of energy consumption is low, dirt
The small, cost of dye is low, while the alloy double zero foil thickness of table ware 8006 obtained by production reaches 0.006~0.0075mm, tension
Intensity is not less than 210MPa, and elongation percentage is not less than 8%, and the production method of the more excellent table ware aluminium foil of surface quality.
The application is completed based on the following discovery of inventor：At present, the supply of material thickness of general table ware aluminium foil is little
In 0.15mm.With the development of economic technology, requirement more and more higher of the market to table ware aluminium foil each side, it is desirable to tableware aluminium
The thickness of paper tinsel is further thinned, and tensile strength increase, elongation percentage further increases, and surface quality is more excellent.But production at present
Table ware aluminium foil be substantially thick paper tinsel, and mechanical property, surface quality are unable to reach the production requirement of table ware aluminium foil,
And using hot rolling production, high energy consumption, pollution are big, cost is high.In consideration of it, present inventor to existing by preparing family expenses
The technology of tableware aluminium foil is tried to explore, it is intended to solve defect of the prior art, is desirably to obtain thickness of thin, tensile strength
Greatly, the good alloy double zero foil of table ware 8006 of good percentage elongation, surface quality.
Therefore, in one aspect of the invention, the present invention proposes a kind of alloy double zero foil of table ware 8006 for preparing
Method.Embodiments in accordance with the present invention, this method includes：(1) by electrolytic aluminium liquid with carrying out mixed smelting containing aluminium waste, so as to
To aluminum melt；(2) aluminum melt is refined and taken off Slag treatment, to obtain refinery molten aluminium；(3) to the refinery molten aluminium
In online addition aluminium titanium boron wire fining agent refined, to obtain refinement aluminium liquid；(4) using inert gas to the refinement aluminium
Liquid carries out online degasification, on-line filtration, so as to the final aluminium liquid of case before obtaining and refinement impurity；(5) the final aluminium liquid is carried out
Casting is produced, to obtain cast-rolling stock；(6) by the cast-rolling stock sequentially pass through it is cold rolling, for the first time annealing, in roll, second
Secondary annealing and paper tinsel roll, to obtain 8006 alloy double zero foils.
Thus, the method for preparing the alloy double zero foil of table ware 8006 according to embodiments of the present invention is by by electrolytic aluminium liquid
With carrying out mixed smelting containing aluminium waste, be conducive to the aluminum melt for obtaining meeting 8006 alloys；By by aluminum melt carry out refining and
Skim, the impurity in aluminum melt is can remove, while being conducive to crystal grain thinning；The addition of fining agent may be such that refinery molten aluminium generation is big
Heterogeneous nucleus is measured, is conducive to inside whole refinery molten aluminium nucleation simultaneously, forms the fine grain structure of tiny approximate equiax crystal,
Thick columanar structure originally disappears.In purification process, inert gas plays a protective role to aluminium liquid, on the one hand can remove
Hydrogen in refinery molten aluminium, on the one hand can prevent aluminium liquid by air pollution.Then filtered again, can obtain degree of purity and meet 8006
The removal of impurities aluminium liquid of the foil blank of alloy double zero.After casting again by cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, the
Double annealing and paper tinsel roll, and can obtain the alloy double zero foil of table ware 8006 that thickness is 0.006~0.0075mm, and the family has dinner
Having 8006 alloy double zero foils, there is tensile strength to be not less than 210MPa, and elongation percentage is not less than 8%, and surface quality is more excellent
Feature.
In addition, the method according to the above embodiment of the present invention for preparing the alloy double zero foil of table ware 8006 can also have
The technical characteristic added as follows：
In an embodiment of the present invention, in step (1), by the electrolytic aluminium liquid with the aluminium waste that contains according to mass ratio
For (65~70)：(30~35) mixed smelting is carried out.Thus, be conducive to obtaining 8006 qualified alloy molten solutions of composition.
In an embodiment of the present invention, in step (1), described is in casting waste material and cold rolling waste material containing aluminium waste
At least one of.Thus, the recycling containing bauxite resource is advantageously implemented, the cost of raw material is reduced.
In an embodiment of the present invention, step (2) is carried out according to the following steps：(2-1) is using argon gas and solid-state essence
Refine agent and the first refining treatment is carried out to the aluminum melt, to obtain the first refining liquation；(2-2) refines liquation by described first
Carry out first and take off Slag treatment, to obtain the first aluminium liquid and the first scum silica frost；(2-3) is using argon gas and dichloromethane to described first
Aluminium liquid carries out the second refining treatment, to obtain the second refining liquation；Described second refining liquation is carried out second and skimmed by (2-4)
Processing, to obtain the refinery molten aluminium and the second scum silica frost.Thus, be conducive to removing the impurity and crystal grain thinning in aluminum melt.
In an embodiment of the present invention, in step (2-1), the pressure of the argon gas is 5~10MPa, and based on 20
~23t the aluminum melt, the addition of the solid-state refining agent is 3~3.5Kg.Thus, be conducive to removing hydrogen in containing and
The oxide slag inclusion swum.
In an embodiment of the present invention, in step (2-3), the pressure of the argon gas is 5~10MPa, and based on 20
~23t first aluminium liquid, the addition of the dichloromethane is 2~3Kg.Thus, can further remove hydrogen in containing and
The oxide slag inclusion swum.
In an embodiment of the present invention, in step (3), the refinery molten aluminium based on 1t, the addition of the fining agent
Measure as 2.5~3.5Kg.Thus, the crystal grain of the alloy double zero foil of table ware 8006 can further be refined.
In an embodiment of the present invention, in step (4), the flow of the inert gas is 2.5-2.8m3/ h, it is described lazy
Property gas bubble highly be 3-5mm.Thus, be conducive to removing the hydrogen in aluminium liquid.
In an embodiment of the present invention, in step (5), the preceding case temperature 695~700 of the casting processing procedure is Celsius
Degree, 830~850m/min of roll casting speed, the roll is 67~74mm.Thus, table ware can further be refined
The crystal grain of 8006 alloy double zero foils.
In an embodiment of the present invention, in step (6), the speed of the cold rolling is 1050-1150m/min.By
This, can further refine the crystal grain of the alloy double zero foil of table ware 8006.
In an embodiment of the present invention, in step (6), it is described in roll speed for 900-1000m/min, it is described in roll it
The thickness of cast-rolling stock is 0.01-0.02mm afterwards.Thus, the crystal grain of the alloy double zero foil of table ware 8006 can further be refined.
In an embodiment of the present invention, in step (6), the temperature of second of the annealing is 150~250 degrees Celsius,
It is preferred that 200 degrees Celsius, the time is 2h.Thus, the crystal grain of 8006 alloy double zero foils can further be refined.
In an embodiment of the present invention, in step (6), the paper tinsel rolls speed for 700-800m/min.Thus, one can be entered
The crystal grain of step 8006 alloy double zero foils of refinement.
In another aspect of the invention, the present invention proposes a kind of alloy double zero foil of table ware 8006, the family expenses
The alloy double zero foil of tableware 8006 is prepared using the above-mentioned method for preparing the alloy double zero foil of table ware 8006.Thus,
High thickness of thin, tensile strength, good percentage elongation and the good alloy double zero foil of table ware 8006 of surface quality can be obtained.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the method flow signal according to an embodiment of the invention for preparing the alloy double zero foil of table ware 8006
Figure；
Fig. 2 is the method flow for preparing the alloy double zero foil of table ware 8006 signal according to further embodiment of the present invention
Figure.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In one aspect of the invention, the present invention proposes a kind of method for preparing the alloy double zero foil of table ware 8006.
Embodiments in accordance with the present invention, this method includes：(1) by electrolytic aluminium liquid with carrying out mixed smelting containing aluminium waste, to obtain aluminium
Liquation；(2) Slag treatment is refined and taken off to aluminum melt, to obtain refinery molten aluminium；(3) the online addition aluminium into refinery molten aluminium
Titanium boron wire fining agent is refined, to obtain refining aluminium liquid；(4) using inert gas refinement aluminium liquid is carried out online degasification,
On-line filtration, the final aluminium liquid of case and refinement impurity before obtaining；(5) final aluminium liquid is subjected to casting processing, to obtain cast-rolled strip
Material；(6) by cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, second annealing and paper tinsel are rolled, to obtain 8006 conjunctions
Golden double zero foil.
Thus, the method for preparing the alloy double zero foil of table ware 8006 according to embodiments of the present invention is by by electrolytic aluminium liquid
With carrying out mixed smelting containing aluminium waste, be conducive to the aluminum melt for obtaining meeting 8006 alloys；By by aluminum melt carry out refining and
Skim, the impurity in aluminum melt is can remove, while being conducive to crystal grain thinning；The addition of fining agent may be such that refinery molten aluminium generation is big
Heterogeneous nucleus is measured, is conducive to inside whole refinery molten aluminium nucleation simultaneously, forms the fine grain structure of tiny approximate equiax crystal,
Thick columanar structure originally disappears.In purification process, inert gas plays a protective role to aluminium liquid, on the one hand can remove
The hydrogen in Aluminum is refined, on the one hand can prevent that aluminium liquid from, by air pollution, then being filtered, can obtain degree of purity and meet 8006 again
The removal of impurities aluminium liquid of the foil blank of alloy double zero.After casting again by cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, the
Double annealing and paper tinsel roll, and can obtain the alloy double zero foil of table ware 8006 that thickness is 0.006~0.0075mm, and the family has dinner
Having 8006 alloy double zero foils, there is tensile strength to be not less than 210MPa, and elongation percentage is not less than 8%, and surface quality is more excellent
Feature.
The method for preparing the alloy double zero foil of table ware 8006 of the embodiment of the present invention is retouched in detail below with reference to Fig. 1
State.Embodiments in accordance with the present invention, this method includes：
S100：By electrolytic aluminium liquid with carrying out mixed smelting containing aluminium waste
In the step, by electrolytic aluminium liquid with carrying out mixed smelting containing aluminium waste, to obtain aluminum melt.Inventor's discovery,
When preparing 8006 alloy double zero foil of table ware, chemical composition need to be performed in strict accordance with 8006 alloys.The chemistry of 8006 alloys
Composition is：0.20wt%~0.25wt%Si, 1.40wt%~1.50wt%Fe, no more than 0.12wt% Cu, are not more than
0.05wt% Zn, 0.30wt%~0.40wt%Mn, 0.035wt%Ti and surplus aluminium.By by electrolytic aluminium liquid and containing aluminium
Waste material carries out mixed smelting, can meet the requirement to alloying components such as Al, Fe, Si, Cu, Mn in 8006 alloy double zero foils.
Specifically, the chemical composition of aluminum melt is performed in strict accordance with 8006 alloys, using 65~70wt% electrolytic aluminium liquids with
30~35wt% is mixed containing aluminium waste, in aluminum melt fusion process, when aluminum melt temperature reaches 700~710 degrees Celsius, is gone
Except surface scum, aluminum melt is stirred using electromagnetic agitation, when aluminum melt temperature is not less than 735 degrees Celsius, taken
Sample is analyzed, and configures chemical composition.
According to one embodiment of present invention, electrolytic aluminium liquid with can be according to mass ratio (65~70) containing aluminium waste：(30~
35) mixed smelting is carried out.In fusion process, electrolytic aluminium liquid is with containing the necessary strict implement of aluminium waste ratio of the present invention, containing
Amount is too high or too low, can produce large effect to the equiax crystal in aluminum melt, directly affect the inside group of 8006 double zero foils
Structure is knitted, so as to be unable to reach use requirement.
According to still a further embodiment, it is not particularly restricted containing aluminium waste, those skilled in the art can root
Selected according to being actually needed, can be selected from casting waste material and cold containing aluminium waste according to the specific embodiment of the present invention
Roll at least one of waste material.Thus, the recycling containing bauxite resource is advantageously implemented, the cost of raw material is reduced.
S200：Slag treatment is refined and taken off to aluminum melt
In the step, Slag treatment is refined and taken off to aluminum melt, to obtain refinery molten aluminium.Thus, aluminium is can remove to melt
Impurity in liquid, while being conducive to crystal grain thinning.
With reference to Fig. 2, embodiments in accordance with the present invention, S200 is carried out according to the following steps：
S21：First refining treatment is carried out to aluminum melt using argon gas and solid-state refining agent
In the step, the first refining treatment is carried out to aluminum melt using argon gas and solid-state refining agent, to obtain the first essence
Refine liquation.Thus, be conducive to refining the crystal grain of aluminum melt.
According to one embodiment of present invention, the addition of the pressure of argon gas and solid-state refining agent is not particularly restricted,
Those skilled in the art can be selected according to actual needs, according to the specific embodiment of the present invention, the pressure of argon gas
Can be 5~10MPa, and the aluminum melt based on 20-23t, the addition of solid-state refining agent can be 3~3.5Kg.In degasification
In refining process, bubble is more tiny, and distribution gets over disperse uniformly, and the distance that the hydrogen in aluminum melt enters bubble is shorter, and bubble escapes
The time for going out liquid level is longer, and the time is longer, is more conducive to fully absorbing hydrogen and impurity, so as to reach more preferable degassing effect.Argon
The pressure of the gas and addition of solid-state refining agent is too high or too low is all difficult to reach optimal refinery by de-gassing effect.
S22：First refining liquation is carried out first and takes off Slag treatment
In the step, the first refining liquation is carried out first and takes off Slag treatment, to obtain the first aluminium liquid and the first scum silica frost.By
This, can remove the impurity in the first refining liquation.
S23：Second refining treatment is carried out to the first aluminium liquid using argon gas and dichloromethane
In the step, the second refining treatment is carried out to the first aluminium liquid using argon gas and dichloromethane, to obtain the second essence
Refine liquation.Thus, the crystal grain of the first aluminium liquid can further be refined.
According to one embodiment of present invention, the pressure of argon gas and the addition of dichloromethane are not particularly restricted, this
Art personnel can be selected according to actual needs, and according to the specific embodiment of the present invention, the pressure of argon gas can
Think 5~10MPa, and the first aluminium liquid based on 20-23t, the addition of dichloromethane can be 2~3Kg.In refinery by de-gassing
During, bubble is more tiny, and distribution gets over disperse uniformly, and the distance that the hydrogen in the first aluminium liquid enters bubble is shorter, and bubble is escaped
The time of liquid level is longer, and the time is longer, is more conducive to fully absorbing hydrogen and impurity reaching more preferable degassing effect.Argon gas
The addition of pressure and dichloromethane is too high or too low to be all difficult to reach optimal refinery by de-gassing effect.
S24：Second refining liquation is carried out second and takes off Slag treatment
In the step, the second refining liquation is carried out second and takes off Slag treatment, to obtain refinery molten aluminium and the second scum silica frost.By
This, can remove the impurity in the second refining liquation.
Specifically, during aluminum melt is refined, using multi-pass refining techniques.When reaching 745 containing temperature~
At 755 degrees Celsius, the first refining treatment is carried out to aluminum melt using argon gas and solid-state refining agent, the first refining liquation is obtained.Its
Middle argon pressure control is in 5~10MPa, and the aluminum melt based on 20-23t, solid-state refining agent addition is 3~3.5kg, during refining
Between be 12min.First refining liquation is stood after 5min, and carrying out first to the first refining liquation takes off Slag treatment, obtains the first aluminium liquid
With the first scum silica frost.According to preceding case temperature needs, smelting furnace converter temperature is controlled, and the first aluminium liquid is stood into 5-15min rear converters.
After standing furnace converter 1h, the second refining treatment is carried out to the first aluminium liquid using argon gas and dichloromethane, argon pressure control 5~
10MPa, the first aluminium liquid based on 20-23t, the addition of dichloromethane is 2~3Kg, refining time 10min, and carries out the 3rd
Slag treatment is taken off, standing furnace refinery molten aluminium temperature control is at 745~750 degrees Celsius.
S300：Into refinery molten aluminium, online addition aluminium titanium boron wire fining agent is refined
In the step, into refinery molten aluminium, online addition aluminium titanium boron wire fining agent is refined, to obtain refining aluminium liquid.
Thus, be conducive to refining the crystal grain in refinery molten aluminium.
According to one embodiment of present invention, the addition of fining agent is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to the present invention a specific embodiment, the refinery molten aluminium based on 1t, fining agent plus
It can be 2.5~3.5Kg, preferably 3Kg to enter amount.Inventor has found that Ti is hexagonal lattice crystal structure, and crystal constant a is
0.2953 μm, c is 0.4729 μm, and Ti is in aluminum substrate, and a part forms TiAl with matrix formation solid solution, a part3Chemical combination
Thing, TiAl3Compound is main equiax crystal in refinery molten aluminium, and absorptivity is higher, and grain refining effect is better.Inventor is led to
Cross substantial amounts of experiment to have been surprisingly found that, the refinery molten aluminium based on 1t, when the addition of fining agent is 3Kg, 8006 double zero foil cast-rolled strips
Expect that grain refining effect is optimal.
S400：Online degasification, on-line filtration are carried out to refinement aluminium liquid using inert gas
In the step, online degasification, on-line filtration are carried out to refinement aluminium liquid using inert gas, so that case is final before obtaining
Aluminium liquid and refinement impurity.Thus, it can be conducive to purifying aluminium liquid.
Specifically, carry out in-line purification to aluminium liquid using inert gas, the control of inert gas flow flow 2.5~
2.8m3/ h, the bubble of inert gas is highly 3-5mm, afterwards using non-traditional filter type, makes aluminium liquid from bottom to up, successively
By 2 grades of ceramic filter plates, ceramic wafer upper face uses 60ppi, and lower face uses 30ppi.
According to one embodiment of present invention, the flow and bubble of inert gas are highly not particularly restricted, this area
Technical staff can be selected according to actual needs, and according to the specific embodiment of the present invention, the flow of inert gas can
Think 2.5~2.8m3/ h, the bubble of inert gas is highly 3-5mm.Inventor has found, when the flow and inertia of inert gas
When the bubble of gas is highly in parameter area of the present invention, optimal in-line purification effect is can reach, 8006 double zero foils are met
Production.It should be noted that the selection of inert gas is not particularly restricted, those skilled in the art can be according to actual needs
Selected, such as can be nitrogen, argon gas.
S500：Final aluminium liquid is subjected to casting production
In the step, final aluminium liquid is subjected to casting production, to obtain cast-rolling stock.Specifically, before in strip casting process
The control of case removal of impurities temperature of aluminum liquid is at 695-700 degrees Celsius, and the speed of casting processing is 830-850mm/min, and roll is
62~64mm, coolant water temperature is 38-40 degrees Celsius, and preceding case liquid fluctuating control is in the range of ± 0.1mm, so as to ensure what is obtained
The foil blank of 8006 alloy double zero has fine and closely woven interior tissue and good surface quality.Inventor find, when roll casting speed with
When intensity of cooling is constant, if preceding case removal of impurities temperature of aluminum liquid is too high, the melt temperature gradient before crystallization front will be caused to increase,
Undercooling degree diminishes, and nucleation rate is reduced and coarsening rate is improved, and is conducive to cellular crystal to grow, thus surface microstructure is thick.When
When other conditions are constant, if improving roll casting speed, casting region will be increased, lengthen liquid cave, and deformed area shortens, and causes crystallization
Melt temperature gradient increase before forward position, undercooling degree diminishes, and nucleation rate is reduced and coarsening rate is improved, thus crystal grain is thick
Greatly.When other conditions are constant, under the premise of ensureing that casting is normally produced, if preceding case liquid level is too low, melt static pressure can be caused
Power is smaller, and roll casting zone upper surface melt is insufficient contact with Casting Roller, and heat transfer condition is poor, and cooling velocity is slow, before the crystallization of upper surface
Increased along thermograde, undercooling degree diminishes at this, roll casting sheet upper surface is formed coarse grain.The temperature of cooling water
Degree, pressure and flow, Casting Roller set thickness and its heat conductivility produce influence to intensity of cooling.If cooling water temperature is inclined
High, hydraulic pressure is relatively low or roller set is blocked up, can reduce intensity of cooling, aluminum melt undercooling degree is diminished, nucleation rate reduction, solidification
Time increases, so as to easily make roll casting sheet surface produce coarse grain.In casting roll neck and the timing of roll gap one, roll casting zone is longer,
The aluminum melt entered in roll casting zone is more, it is necessary to which the heat taken away is also more.If the techniques such as intensity of cooling, mill speed are joined
When number is constant, then roller sleeving temperature can be caused to rise, melt undercooling degree diminishes, and easily makes coarse grains.
According to one embodiment of present invention, preceding case temperature, roll casting speed and the roll of casting processing procedure be simultaneously
It is not particularly limited, those skilled in the art can be selected according to actual needs, according to one of present invention specific implementation
Example, the preceding case temperature of casting processing procedure can be 695~700 degrees Celsius, and roll casting speed can be 830~850mm/min, casting
It can be 67~74mm to roll section length.Inventor has found, when roll casting speed and intensity of cooling are constant, if preceding case removal of impurities aluminium liquid
Temperature is too high, the melt temperature gradient before crystallization front will be caused to increase, undercooling degree diminishes, and nucleation rate is reduced and grown up
Speed is improved, and is conducive to cellular crystal to grow, thus surface microstructure is thick.When other conditions are constant, if improving roll casting speed,
Casting region will be increased, liquid cave is lengthened, and deformed area shortens, and causes the melt temperature gradient before crystallization front to increase, liquid phase
Degree of supercooling diminishes, and nucleation rate is reduced and coarsening rate is improved, thus coarse grains.In casting roll neck and the timing of roll gap one, casting
Qu Yuechang, the aluminum melt entered in roll casting zone is more, it is necessary to which the heat taken away is also more.If intensity of cooling, mill speed
Deng technological parameter it is constant when, then roller sleeving temperature can be caused to rise, melt undercooling degree diminishes, easily make coarse grains.
S600：By cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, second annealing and paper tinsel are rolled
In the step, by cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, second annealing and paper tinsel are rolled, so as to
Obtain the alloy double zero foil of table ware 8006.Specifically, cold rolling and first time is annealed into a cyclic process, annealing for the first time is wrapped
Include to move back and move back two processes with.Thickness for 6.9mm cast-rolling stock after one passage of cold rolling, thickness is changed into 4.7mm,
Then moved back, move back temperature for 555 degrees Celsius, be incubated 3 hours, afterwards 4 passages of cold rolling again, cast-rolling stock is thick
Degree is rolling to 0.5mm, is moved back in then carrying out, in move back temperature for 435 degrees Celsius, be incubated 3 hours, afterwards 2 roads of cold rolling again
The secondary thickness for making cast-rolling stock is rolling to 0.2mm, as cold rolling coil.In whole process, the speed of cold rolling is 1050-
1150m/min, while strictly being controlled Casting Rolled Sheet plate shape and thickness of slab using advanced AFC and AGC.By the cold rolling of 0.2mm thickness
Volume, passes through 7~8 passes on middle milling train so that the thickness of cold rolling coil is 0.01~0.02mm, in roll speed for 900-
1000m/min.In roll after, carry out second and anneal, flash annealing is annealed into for the second time, second of annealing temperature is 200 Celsius
Degree, soaking time is 2h, and second of annealing can effectively remove Annealing oil stain.Aluminium volume after second is annealed, on foil mill
Rolled by 5~6 passage paper tinsels, aluminium rolling 0.006mm~0.0075mm is thick, using advanced AFC and AGC to finished product plate shape and thickness
Degree tolerance is strictly controlled, and paper tinsel rolls speed for 700-800m/min, and paper tinsel rolls online Strip Shape Control in no more than 10I, roll-force
Control is within 130-200t, and Oil-temperature control obtains the alloy double zero foil of table ware 8006 in 53-56 degrees Celsius.
According to one embodiment of present invention, the speed of cold rolling is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to the specific embodiment of the present invention, the speed of cold rolling can be 1050-
1150m/min.Inventor has found, it is cold rolling after, the intensity and resistance of deformation of cast-rolling stock increase, plasticity decline.In rolling deformation
In, with the change of metallic profiles, corresponding change also generally occurs for the shape of its internal grain, i.e., along maximum main transformer shape
Direction is elongated, draws and attenuates or flattened, simultaneously because crystal grain has a presence of anisotropic and the second phase, and mill speed is too high or mistake
Deformation that is low, being organized in influence process, is easily caused broken belt.
According to still a further embodiment, the thickness that aluminum foil stock after speed is rolled with is rolled in is not limited especially
System, those skilled in the art can be selected according to actual needs, according to the specific embodiment of the present invention, in roll speed
Can be 900-1000m/min, in roll after the thickness of aluminum foil stock can be 0.01-0.02mm.Inventor has found, in rolling
In deformation, with the change of metallic profiles, corresponding change also generally occurs for the shape of its internal grain, i.e., main along maximum
Deformation direction is elongated, draws and attenuates or flattened, simultaneously because crystal grain has the presence of anisotropic and the second phase, mill speed is too high
Or too low, the deformation organized in influence process, it is easily caused broken belt.In roll after aluminum foil stock thickness be 0.01-
0.02mm, could meet follow-up 8006 double zero foil production.
According to still another embodiment of the invention, the temperature and time of second of annealing is not particularly restricted, this area
Technical staff can be selected according to actual needs, according to the specific embodiment of the present invention, the temperature of second of annealing
It can be 150~250 degrees Celsius, preferably 200 degrees Celsius, the time can be 2h.Inventor has found that 8006 double zero foils are mainly used in
Table ware paper tinsel, has strict requirements for aluminium foil surface band oil mass, therefore the temperature and time of second of annealing need to be controlled strictly
System, can be only achieved optimal deoiling effect.
According to still another embodiment of the invention, paper tinsel rolls speed and is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to the specific embodiment of the present invention, it can be 700-800m/min that paper tinsel, which rolls speed,.Invention
People has found, in rolling deformation, with the change of metallic profiles, and corresponding become also generally occurs for the shape of its internal grain
Change, i.e., be elongated, draw and attenuate or flatten along maximum main deformation direction, simultaneously because crystal grain has depositing for anisotropic and the second phase
Mill speed is too high or too low, the deformation organized in influence process, is easily caused broken belt.
In another aspect of the invention, the present invention proposes a kind of alloy double zero foil of table ware 8006, according to this hair
Bright embodiment, the above-mentioned alloy double zero foil of table ware 8006 is using the above-mentioned side for preparing the alloy double zero foil of table ware 8006
What method was prepared.Thus, high thickness of thin, tensile strength, good percentage elongation and the good table ware 8006 of surface quality can be obtained
Alloy double zero foil.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only description
Property, without limiting the present invention in any way.
Embodiment 1
The chemical composition and percentage by weight of 8006 alloys are as shown in table 1.
The chemical composition and percentage by weight of the alloy of table 1 8006
| Alloy | Fe (wt%) | Si (wt%) | Cu (wt%) | Zn (wt%) | Mn (wt%) | Ti (wt%) | Al (wt%) |
| 8006 | 1.42 | 0.20 | 0.10 | 0.01 | 0.33 | 0.035 | Surplus |
The chemical composition of aluminum melt is performed in strict accordance with 8006 alloys, useless containing aluminium using 70wt% electrolytic aluminium liquids and 30wt%
Material mixing, in aluminum melt fusion process, when aluminum melt temperature reaches 710 degrees Celsius, is removed surface scum, is stirred using electromagnetism
Mix and aluminum melt is stirred, when aluminum melt temperature reaches 735 degrees Celsius, be sampled analysis, configure chemical composition.
During aluminum melt is refined, using multi-pass refining techniques.When aluminum melt temperature reaches 750 degrees Celsius
When, using argon gas and solid-state refining agent to containing the first refining treatment is carried out, obtaining the first refining liquation.Wherein argon pressure is controlled
In 5~10MPa, the aluminum melt based on 20~23t, solid-state refining agent addition is 3~3.5kg, and refining time is 12min.The
One refining liquation is stood after 5min, and carrying out first to the first refining liquation takes off Slag treatment, obtains the first aluminium liquid and the first scum silica frost.Root
Needed according to preceding case temperature, control smelting furnace converter temperature, and the first aluminium liquid is stood into 15min rear converters.After standing furnace converter 1h,
Second refining treatment is carried out to the first aluminium liquid using argon gas and dichloromethane, argon pressure control in 5~10MPa, based on 20~
30t the first aluminium liquid, the addition of dichloromethane is 2~3Kg, refining time 10min, and Slag treatment is taken off in progress the 3rd, stands
Stove refinery molten aluminium temperature control is at 750 degrees Celsius.
Refinery molten aluminium is refined using aluminium titanium boron wire fining agent, the temperature of refinery molten aluminium is 715 degrees Celsius during addition,
Refinery molten aluminium based on 1t, the addition of aluminium titanium boron wire fining agent is 3Kg/t aluminium.
In-line purification is carried out to aluminium liquid using inert gas, inert gas flow flow is controlled in 2.5m3/ h, inert gas
Bubble highly be 3-5mm.Then non-traditional filter type is used, makes aluminium liquid from bottom to up, successively by 2 grades of ceramic filters
Plate, ceramic wafer upper face uses 60ppi, and lower face uses 30ppi.
The control of case removal of impurities temperature of aluminum liquid is at 698 degrees Celsius before in strip casting process, and the speed of casting processing is 830mm/min,
Roll is 64mm, and coolant water temperature is 38 degrees Celsius, and preceding case liquid fluctuating is controlled in the range of ± 0.1mm,
Cold rolling to be annealed into a cyclic process with first time, annealing for the first time includes moving back moves back two processes with.Thickness
For 6.9mm cast-rolling stock after one passage of cold rolling, thickness is changed into 4.7mm, is then moved back, and moves back temperature and is
555 degrees Celsius, 3 hours are incubated, afterwards 4 passages of cold rolling again, cast-rolling stock thickness are rolling to 0.5mm, moved back in progress,
In move back temperature for 435 degrees Celsius, be incubated 3 hours, 2 passages of cold rolling are rolling to the thickness of cast-rolling stock again afterwards
0.2mm, as cold rolling coil.In whole process, the speed of cold rolling is 1100m/min, while using advanced AFC and AGC pairs
Casting Rolled Sheet plate shape and thickness of slab are strictly controlled.Cold rolling coil thickness deviation is controlled no more than 1.5%.By the cold rolling of 0.2mm thickness
Volume, passes through 7 passes on middle milling train so that the thickness of cold rolling coil is 0.01mm, in roll speed for 900m/min.In roll
Afterwards, carry out second to anneal, flash annealing is annealed into for the second time, second of annealing temperature is 200 degrees Celsius, and soaking time is
2h, second of annealing can effectively remove Annealing oil stain.Aluminium volume after second is annealed, rolls on foil mill by 5 passage paper tinsels,
Aluminium rolling 0.006mm is thick, finished product plate shape and thickness deviation are strictly controlled using advanced AFC and AGC, paper tinsel rolls speed
For 800m/min, paper tinsel rolls online Strip Shape Control in no more than 10I, and online thickness deviation is not more than 2.0%, and roll-force control exists
150t, Oil-temperature control obtains the alloy double zero foil of table ware 8006 at 53 degrees Celsius.
Product mechanical property is examined to meet：Using the alloy double zero foil of table ware made from above-mentioned parameter and method 8006
Tensile strength is 230MPa, and elongation percentage is 9%, and surface is without mass defects such as black silk secret note, informal voucher, oil marks.
Embodiment 2
The chemical composition and percentage by weight of 8006 alloys are as shown in table 2.
The chemical composition and percentage by weight of the alloy of table 2 8006
| Alloy | Fe (wt%) | Si (wt%) | Cu (wt%) | Zn (wt%) | Mn (wt%) | Ti (wt%) | Al (wt%) |
| 8006 | 1.5 | 0.23 | 0.09 | 0.03 | 0.31 | 0.035 | Surplus |
The chemical composition of aluminum melt is performed in strict accordance with 8006 alloys, useless containing aluminium using 65wt% electrolytic aluminium liquids and 35wt%
Material mixing, in aluminum melt fusion process, when aluminum melt temperature reaches 705 degrees Celsius, is removed surface scum, is stirred using electromagnetism
Mix to containing stirring, when aluminum melt temperature reaches 740 degrees Celsius, be sampled analysis, configure chemical composition.
During aluminum melt is refined, using multi-pass refining techniques.When reaching 745 degrees Celsius containing temperature,
Using argon gas and solid-state refining agent to containing the first refining treatment is carried out, obtaining the first refining liquation.Wherein argon pressure control is 5
~10MPa, based on 20-23t aluminum melts, solid-state refining agent addition is 3~3.5kg, and refining time is 12min.First refining
Liquation is stood after 5min, and carrying out first to the first refining liquation takes off Slag treatment, obtains the first aluminium liquid and the first scum silica frost.According to preceding case
Temperature needs, and controls smelting furnace converter temperature, and the first aluminium liquid is stood into 10min rear converters.After standing furnace converter 1h, using argon
Gas and dichloromethane carry out the second refining treatment to the first aluminium liquid, and argon pressure is controlled in 5~10MPa, based on 20-23t first
Aluminium liquid, the addition of dichloromethane is 2~3Kg, refining time 10min, and Slag treatment, standing furnace refinery molten aluminium are taken off in progress the 3rd
Temperature control is at 746 degrees Celsius.
Refinery molten aluminium is refined using aluminium titanium boron wire fining agent, the temperature of refinery molten aluminium is 712 degrees Celsius during addition,
Refinery molten aluminium based on 1t, the addition of aluminium titanium boron wire fining agent is 3Kg/t aluminium.
In-line purification is carried out to aluminium liquid using inert gas, inert gas flow flow is controlled in 2.8m3/ h, inert gas
Bubble highly be 3-5mm.Using non-traditional filter type, make aluminium liquid from bottom to up, successively by 2 grades of ceramic filter plates, pottery
Porcelain plate upper face uses 60ppi, and lower face uses 30ppi.
The control of case removal of impurities temperature of aluminum liquid is at 700 degrees Celsius before in strip casting process, and the speed of casting processing is 850mm/min,
Roll is 62mm, and coolant water temperature is 40 degrees Celsius, and preceding case liquid fluctuating control is in the range of ± 0.1mm.
Cold rolling to be annealed into a cyclic process with first time, annealing for the first time includes moving back moves back two processes with.Thickness
For 6.9mm cast-rolling stock after one passage of cold rolling, thickness is changed into 4.7mm, is then moved back, and moves back temperature and is
555 degrees Celsius, 3 hours are incubated, afterwards 4 passages of cold rolling again, cast-rolling stock thickness are rolling to 0.5mm, moved back in progress,
In move back temperature for 435 degrees Celsius, be incubated 3 hours, 2 passages of cold rolling are rolling to the thickness of cast-rolling stock again afterwards
0.2mm, as cold rolling coil.In whole process, the speed of cold rolling is 1100m/min, while using advanced AFC and AGC pairs
Casting Rolled Sheet plate shape and thickness of slab are strictly controlled.Cold rolling coil thickness deviation is controlled no more than 1.5%.By the cold rolling of 0.2mm thickness
Volume, passes through 7 passes on middle milling train so that the thickness of cold rolling coil is 0.01mm, in roll speed for 950m/min.In roll
Afterwards, carry out second to anneal, flash annealing is annealed into for the second time, second of annealing temperature is 200 degrees Celsius, and soaking time is
2h, second of annealing can effectively remove Annealing oil stain.Aluminium volume after second is annealed, rolls on foil mill by 5 passage paper tinsels,
Aluminium rolling 0.006mm is thick, finished product plate shape and thickness deviation are strictly controlled using advanced AFC and AGC, paper tinsel rolls speed
For 700m/min, paper tinsel rolls online Strip Shape Control in no more than 10I, and online thickness deviation is not more than 2.0%, and roll-force control exists
180t, Oil-temperature control obtains the alloy double zero foil of table ware 8006 at 55 degrees Celsius.
Product mechanical property is examined to meet：Using the alloy double zero foil of table ware made from above-mentioned parameter and method 8006
Tensile strength is 220MPa, and elongation percentage is 10%, and surface is without mass defects such as black silk secret note, informal voucher, oil marks.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (9)
1. a kind of method for preparing the alloy double zero foil of table ware 8006, it is characterised in that including：
(1) by electrolytic aluminium liquid with carrying out mixed smelting containing aluminium waste, to obtain aluminum melt；
(2) aluminum melt is refined and taken off Slag treatment, to obtain refinery molten aluminium；
(3) into the refinery molten aluminium, online addition aluminium titanium boron wire fining agent is refined, to obtain refining aluminium liquid；
(4) online degasification, on-line filtration are carried out to the refinement aluminium liquid using inert gas, so as to the final aluminium liquid of case before obtaining and
Refine impurity；
(5) the final aluminium liquid is subjected to casting production, to obtain cast-rolling stock；
(6) by the cast-rolling stock sequentially pass through cold rolling, annealing for the first time, in roll, second annealing and paper tinsel are rolled, to obtain
8006 alloy double zero foils.
2. the electrolytic aluminium liquid according to the method described in claim 1, it is characterised in that in step (1), is contained into aluminium with described
Waste material is (65~70) according to mass ratio：(30~35) mixed smelting is carried out；
Optional, described is selected from least one of casting waste material and cold rolling waste material containing aluminium waste.
3. method according to claim 1 or 2, it is characterised in that step (2) is carried out according to the following steps：
(2-1) carries out the first refining treatment using argon gas and solid-state refining agent to the aluminum melt, is melted to obtain the first refining
Liquid；
Described first refining liquation is carried out first and takes off Slag treatment by (2-2), to obtain the first aluminium liquid and the first scum silica frost；
(2-3) carries out the second refining treatment using argon gas and dichloromethane to first aluminium liquid, is melted to obtain the second refining
Liquid；
Described second refining liquation is carried out second and takes off Slag treatment by (2-4), to obtain the refinery molten aluminium and the second scum silica frost.
4. method according to claim 3, it is characterised in that in step (2-1), the pressure of the argon gas for 5~
10MPa, and the aluminum melt based on 20~23t, the addition of the solid-state refining agent is 3~3.5Kg；
Optional, in step (2-3), the pressure of the argon gas is 5~10MPa, and first aluminium based on 20~23t
Liquid, the addition of the dichloromethane is 2~3Kg.
5. the method according to any one of claim 1-4, it is characterised in that in step (3), based on described in 1 ton
Refinery molten aluminium, the addition of the fining agent is 2.5~3.5Kg.
6. the method according to any one of claim 1-5, it is characterised in that in step (4), the inert gas
Flow is 2.5-2.8m3/ h, the bubble of the inert gas is highly 3-5mm.
7. the method according to any one of claim 1-6, it is characterised in that in step (5), the casting is treated
695~700 degrees Celsius of the preceding case temperature of journey, 830~850mm/min of roll casting speed, the roll is 67~74mm.
8. the method according to any one of claim 1-7, it is characterised in that in step (6), the cold rolling
Speed is 1050-1150m/min；
It is optional, it is described in roll speed for 900-1000m/min, it is described in roll after the thickness of cast-rolling stock be 0.01-
0.02mm；
Optional, the temperature of second of the annealing is 150~250 degrees Celsius, and preferably 200 degrees Celsius, the time is 2h；
Optional, the paper tinsel rolls speed for 700-800m/min.
9. a kind of alloy double zero foil of table ware 8006, it is characterised in that the alloy double zero foil of table ware 8006 is to use
What the method any one of claim 1-8 was prepared.
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| CN108330375A (en) * | 2018-01-24 | 2018-07-27 | 云南浩鑫铝箔有限公司 | A kind of method that electrolytic aluminium liquid casting prepares new energy resource power battery aluminium foil |
| 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 |
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| CN108330375A (en) * | 2018-01-24 | 2018-07-27 | 云南浩鑫铝箔有限公司 | A kind of method that electrolytic aluminium liquid casting prepares new energy resource power battery aluminium foil |
| 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 |
| CN109811160A (en) * | 2019-02-27 | 2019-05-28 | 云南云铝涌鑫铝业有限公司 | A356.2 cast aluminium alloy gold and its precell add the method for titanium |
| CN110484755A (en) * | 2019-08-30 | 2019-11-22 | 洛阳龙鼎铝业有限公司 | A kind of preparation method of high intensity aluminum foil for household use |
| CN110512121A (en) * | 2019-09-20 | 2019-11-29 | 安徽美信铝业有限公司 | A kind of high-performance aluminium alloy blank and its production technology manufacturing technology |
| CN111618263A (en) * | 2020-06-15 | 2020-09-04 | 洛阳万基铝加工有限公司 | Cast-rolling production method of wide 8006 alloy container foil |
| CN112605121A (en) * | 2020-12-30 | 2021-04-06 | 郑州金辉新能源电子材料有限公司 | Copper-aluminum composite foil for PCB and preparation process thereof |
| CN112605121B (en) * | 2020-12-30 | 2023-03-17 | 郑州金辉新能源电子材料有限公司 | Copper-aluminum composite foil for PCB and preparation process thereof |
| CN113637879A (en) * | 2021-10-13 | 2021-11-12 | 山东宏桥新型材料有限公司 | Aluminum-plastic composite bag for food packaging and processing method thereof |
| CN113637879B (en) * | 2021-10-13 | 2022-01-25 | 山东宏桥新型材料有限公司 | Aluminum-plastic composite bag for food packaging and processing method thereof |
| CN113957295A (en) * | 2021-10-21 | 2022-01-21 | 华北铝业有限公司 | Aluminum foil for 8006F air conditioner and preparation method thereof |
| CN114457224A (en) * | 2022-01-21 | 2022-05-10 | 昆山铝业股份有限公司 | Preparation method of ultrathin double-zero aluminum foil and double-zero aluminum foil |
| CN114457224B (en) * | 2022-01-21 | 2024-07-23 | 昆山铝业股份有限公司 | Preparation method of ultrathin double-zero aluminum foil and double-zero aluminum foil |
| CN117265307A (en) * | 2023-10-11 | 2023-12-22 | 中铝河南洛阳铝箔有限公司 | Preparation process and application of high-elongation high-strength aluminum foil |
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Application publication date: 20170818 |