CN106906390A - Aluminium alloy anode oxide plate and its production method - Google Patents
Aluminium alloy anode oxide plate and its production method Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- 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
- C22F1/047—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 of alloys with magnesium as the next major constituent
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- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
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- C25D11/04—Anodisation of aluminium or alloys based thereon
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Abstract
The invention provides a kind of aluminium alloy anode oxide plate and its production method, belong to aluminum alloy processing technology field.A kind of aluminium alloy anode oxide plate, according to mass percentage, its chemical composition includes：Si:≤ 0.1%；Fe:≤ 0.2%；Cu:≤ 0.1%；Mn:≤ 0.1%；Mg:2.2~2.5%；Cr:0.15~0.20%；Zn:≤ 0.1%；Ti:≤ 0.1%；Balance of Al.Aluminium alloy anode oxide plate, its plasticity, alloy surface smoothness are high.The production method of the aluminium alloy anode oxide plate, including：Melting, sampling analysis meet above-mentioned chemical composition content, are middle coiled material by the hot rolled treatment of aluminium alloy cast ingot then by melt casting into aluminium alloy cast ingot, by middle coiled material is cold rolling, annealing；The production method improves the plasticity of aluminium alloy plate, alloy surface smoothness.
Description
Technical field
The present invention relates to aluminum alloy processing technology field, in particular to a kind of aluminium alloy anode oxide plate and its life
Product method.
Background technology
Aluminum alloy materials hardness is low, wear no resistance, and it is damaged that abrasion often occurs, and anode is industrially used more and more widely
The method of oxidation forms the thick and oxidation film layer of densification in aluminium surface, to significantly change the corrosion resistance of aluminium alloy, improves hardness, resistance to
Mill property and decoration performance.Due to 5052,5251 aluminum alloy materials moderate strengths, easy processing shaping and excellent anodic oxidation
Can, it is widely used in expensive goods shell, such as notebook computer, ultrabook, panel computer, digital camera and audio and video player
Deng.In recent years, major notebook manufacturers release the ultrabook of different model, the need for lightening and quick device heat, true shell
A large amount of 5052 or 5251 aluminium alloys using through anodized are manufactured.Aluminium and aluminium alloy can be in true surface shapes through anodic oxidation
Into one layer of Al2O3Film, oxide thickness is under normal circumstances at 10~30 μm.During anodic oxidation, the growth package of the oxide-film of aluminium surface
Containing two processes：Film is electrochemically generated and chemical dissolution procedure, when only the growth rate of film is more than dissolution velocity, oxide-film
Could generate, thicken, so the shallow surface quality restriction anodic oxidation effect in aluminum alloy base material surface.So-called surface " zero-fault "
Be it is essentially identical, i.e.,：Its surface requirements are clean fine and smooth, and color and luster is homogeneous, be not allow for crackle, burn into break-through stomata, peeling,
Metal and nonmetallic press-in thing, scratch, scuffing, the pressure macroscopic quality such as trace, slivering, oil mark, bright band, blanking bar that prints lack
Fall into.But the plasticity and alloy surface smoothness of the anode oxidation board of 5052 or 5251 aluminium alloys obtained in existing process are poor, exist
Defect.
The content of the invention
It is an object of the invention to provide a kind of aluminium alloy anode oxide plate, it is carried out on the basis of nominal chemical composition
Optimization, the alloy compositions of optimization can improve plasticity, the alloy surface smoothness of aluminium alloy plate.
Another object of the present invention is also resided in and provides a kind of production method of aluminium alloy anode oxide plate, by the method energy
Improve plasticity, the alloy surface smoothness of aluminium alloy anode oxide plate.
The present invention is solved its technical problem and is realized using following technical scheme.
A kind of aluminium alloy anode oxide plate, according to mass percentage, its chemical composition includes：Si:≤ 0.1%；Fe:≤
0.2%；Cu:≤ 0.1%；Mn:≤ 0.1%；Mg:2.2~2.5%；Cr:0.15~0.20%；Zn:≤ 0.1%；Ti:≤
0.1%；Balance of Al.
A kind of production method of aluminium alloy anode oxide plate, it includes：Aluminium alloy stock is smelted into melt, sampling point
Analyse, the chemical composition for controlling melt is：Si:≤ 0.1%；Fe:≤ 0.2%；Cu:≤ 0.1%；Mn:≤ 0.1%；Mg:2.2~
2.5%；Cr:0.15~0.20%；Zn:≤ 0.1%；Ti:≤ 0.1%；Balance of Al；
It is middle coiled material by the hot rolled treatment of aluminium alloy cast ingot by melt casting into aluminium alloy cast ingot, middle coiled material is cold
Roll, annealed tensile.
A kind of aluminium alloy anode oxide plate of present invention offer and its beneficial effect of production method are：By to aluminium alloy
The chemical composition of anode oxidation board is defined and optimizes in standard base, black so as to there is aluminium alloy anode oxide plate
The possibility reduction of the defect such as bar and aberration, so that the surface roughness of aluminium alloy anode oxide plate is reduced, further lifting
The surface quality of aluminium alloy anode oxide plate.And it is further by technological operation to combine the production method of aluminium alloy anode oxide plate
Lift the surface quality of aluminium alloy anode oxide plate.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below will be in the embodiment of the present invention
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, are the conventional product that can be obtained by commercially available purchase
Product.
A kind of aluminium alloy anode oxide plate below to the embodiment of the present invention and a kind of production of aluminium alloy anode oxide plate
Method is specifically described.
A kind of aluminium alloy anode oxide plate, its secret note and chromatic aberration defect are preferably minimized, and surface quality and surface roughness are big
To take on a new look.Reference can be made to table 1, according to mass percentage, the chemical composition of aluminium alloy anode oxide plate includes：Si:≤ 0.1%；
Fe:≤ 0.2%；Cu:≤ 0.1%；Mn:≤ 0.1%；Mg:2.2~2.5%；Cr:0.15~0.20%；Zn:≤ 0.1%；Ti:
≤ 0.1%；Balance of Al.
Preferably, Si:0.04~0.07%；Fe:0.12~0.16%；Cu:0.03~0.09%；Mn:0.06~
0.08%；Mg:2.4~2.5%；Cr:0.15~0.20%；Zn:0.001~0.014%；Ti:0.01~0.02%；It is balance of
Al。
By controlling the chemical composition of aluminium alloy anode oxide plate (by taking 5052 and 5252 as an example), aluminium alloy plate is improve
Plasticity, alloy surface smoothness.
The nominal composition of table 1 compares with chemical composition of the present invention
In the present embodiment, by the chemical composition to aluminium alloy anode oxide plate be defined in standard base with it is excellent
Change, so as to by the possibility reduction of the defects such as the secret note and aberration of the presence of aluminium alloy anode oxide plate, so as to reduce aluminium alloy
The surface roughness of anode oxidation board, further lifts the surface quality of aluminium alloy anode oxide plate.
The present embodiment provide aluminium alloy anode oxide plate can according to conventional production process carry out melting, casting and after
Phase is processed, obtained aluminium alloy anode oxide plate, and based on the optimization to its chemical composition, its surface defect is compared to prior art
Middle aluminium alloy anode oxide plate is less, and quality is more preferably.
A kind of production method of aluminium alloy anode oxide plate, it includes：
Aluminium alloy stock is smelted into melt, sampling analysis, the chemical composition for controlling melt is：Si:≤ 0.1%；Fe:≤
0.2%；Cu:≤ 0.1%；Mn:≤ 0.1%；Mg:2.2~2.5%；Cr:0.15~0.20%；Zn:≤ 0.1%；Ti:≤
0.1%；Balance of Al；It is 2.5~7.5mm of thickness by the hot rolled treatment of aluminium alloy cast ingot by melt casting into aluminium alloy cast ingot
Middle coiled material, by middle coiled material it is cold rolling, annealing.
The step of production method of aluminium alloy anode oxide plate S1 --- melting is specially：
Aluminium alloy stock is carried out under conditions of 720~750 DEG C melting and melt is stirred to obtain；Wherein, aluminium alloy stock
Include by mass percentage：Solid aluminium material 35~40%, aluminium scrap material 35~40% and electrolyte 20~30%.
Solid aluminium material is that composition is >=99.7% solid aluminium material, specially remelting aluminium ingot；Aluminium scrap material is closed for identical
The arm of angle material of golden composition, for example：One or more in ingot casting saw cutting head tailing, hot-rolled thick plank crop tailing.Specifically, by aluminium
Chemical composition and mass percent the preparation raw material of alloy plate, the smelting aluminium alloy raw material under conditions of 720~750 DEG C,
When the 50%~60% of aluminium alloy stock is molten into aluminium liquid, electromagnetic agitation is opened, after aluminium alloy stock all melts, added
Component additive agent.
Component additive agent is that one kind adds alite paste (such as with metal powder：No. 2 flux) mechanical compression molding pie product.
Can simplify aluminum melting process time, energy saving and raw material with component additive agent or intermediate alloy, reduce production cost,
Beneficial to precise control alloy composition, improve product quality.The content of magnesium of 5XXX systems alloy is 0.5~6.0% (mass fraction), is deposited
The composition that accompanies difference and change.Due to Mg2Solid solubility very littles of the Si in aluminium, Mg2During Si is the series alloy
It is primarily present phase.In the present embodiment, preferably manganese agent is added in the aluminium alloy stock after dissolving as component additive agent, manganese agent tool
There are tenor high, small volume, be easy to accumulating and use.The addition of manganese can make mutually to be precipitated uniformly containing magnesium, improve alloy
Corrosion resistance, the particularly ability of stress corrosion dehiscence resistant；The addition of manganese can significantly improve alloy strength, and ensure that alloy has
Stability higher.
The application method of component additive agent is：Remove the scum silica frost on aluminium liquid surface, common operation temperature (i.e. 710 DEG C~
750 DEG C) under component additive agent is equably put into molten bath, be sufficiently stirred for 5~10 minutes.It is uniform to enable aluminum alloy to Elemental redistribution
Absorb complete, 10~15 minutes after it should be stood after being sufficiently stirred for, and skimmed, adjusting component.
The step of production method of aluminium alloy anode oxide plate S2 --- multistage purification treatment be specially：
When multistage purification treatment is carried out to melt, S201 is first carried out：Gaseous mixture is refined.
By melt transfer to holding furnace, furnace side Ar and Cl are carried out2Gaseous mixture is refined, and composition is qualified and casting is made adequate preparation
Afterwards, melt stands appropriate time.
By to being blown into pack alloy liquid not only insoluble in pack alloy liquid but also the inertia that is not reacted with hydrogen
Gas, obtains hydrogen-free bubble.Because these minute bubbles are in floating-upward process, Al on the one hand can be adsorbed2O3Deng field trash, the opposing party
Face can also clamp the pressure differential between nitrogen or argon gas bubbles and aluminium alloy contact surface, will be dissolved in the hydrogen suction bubble in aluminium alloy
It is interior.After the bubble floating for having adsorbed field trash and/or hydrogen is excluded to liquid level, the purpose of degassing and slagging-off can be reached.
Ar and Cl is used in the present embodiment2Gaseous mixture is refined, wherein, active gases chlorine does not dissolve in pack alloy
Liquid, but strong chemical reaction can occur with aluminium and the hydrogen being dissolved in pack alloy liquid, generation does not dissolve in pack alloy liquid
HCl and AlCl3Gas.These gases generated due to reaction and the Cl for not participating in reaction2This this can play adsorbed hydrogen and oxygen
Change the effect of field trash, so its refining effect ratio is far better using pure gas argon gas or nitrogen.Typically in logical chlorine
When carrying out terse treatment,The temperature general control of aluminum alloy melt is at 690~720 DEG C, but the logical chlorine time is then according to different
Alloy system and it is different.Although the effect of logical chlorine refining is preferably, complete equipment is more complicated, and chlorine is toxic,
It is harmful and have corrosiveness, therefore the present embodiment to equipment, environment, by Cl2It is used in mixed way with Ar, with logical chlorine essence
Refining is compared, and the refining time for leading to mixed gas refining saves half, and due to having used argon gas, alleviate chlorine to human body and
The corrosiveness of equipment, so that condition of work is also greatly improved.
After gaseous mixture refining terminates, then carry out S202：Degasification removal of impurities.
Degasification removal of impurities：Melt is carried out into melt degasification through SNIF degassing apparatus；Then the foam of 30PPI and 50PPI is made pottery
Porcelain plate is separately heated to 600~750 DEG C, and the foamed ceramic panel for making melt sequentially pass through 30PPI and 50PPI carries out melt filtration.
The melt that the present embodiment is provided first passes through Ar and Cl2Gaseous mixture is refined, can remove gas in melt and
Impurity, further recycles SNIF degassing apparatus to carry out melt degasification, and the foamed ceramic panel of 30PPI and 50PPI is melted
Body is filtered so that the air content and impurity content of melt are further reduced, while after foamed ceramic panel heating, can effectively prevent bubble
Foam ceramic wafer is blocked, and effectively removal melt field trash.Additionally, according to the principle of slag gas association, while field trash is removed,
Hydrogen in melt also can further decline.By removal of impurities degasification twice, the gassiness and impurity content in melt are significantly reduced, be
The homogeneous aluminium alloy cast ingot of the clean fine and smooth, color and luster of casting surface is laid a good foundation.
After degasification removal of impurities, multistage purification treatment also includes S203：Crystal grain refinement.
Alterant is added toward melt, melt is 100 with the mass ratio of alterant：0.01~0.03.Add alterant energy
Enough improve crystallization process, preferably by Al5Ti1B crystal grain refinements silk as alterant.
Cleaning molten uses multi-stage combination cleaning molten technology, ingot metallurgy quality is reached the level of High Purity, makes casting
Ingot metallurgy quality meets：1 grade of grain size；[H]≤0.1ml/100gAl；Na ＜ 2PPm；Ca ＜ 4PPm；Slag ＜ 50K/kg.Product
Forming property and mechanical property it is more excellent.Melt hydrogen content after being processed in line is few, impurity content is reduced, while making
Aluminium alloy cast ingot evenly, it is tiny.
S3, casting：
By melt cast into aluminium alloy cast ingot (620 × 1000~2800 × Lmm).
S4, milling face：The expanding end of aluminium alloy cast ingot and gate end sawing are fallen, ingot casting upper and lower surface and two sides are carried out
Milling face；The surface that milling face can enable aluminum alloy to ingot casting is more smooth, and then lifts the quality of aluminium alloy cast ingot.
S5, Homogenization Treatments：Aluminium alloy cast ingot behind sawing milling face is carried out into Homogenization Treatments；Specifically, at homogenization
Reason includes：460~470 DEG C are warming up to the programming rate of 30~40 DEG C/h to ingot casting, 10~12h is incubated；It is continuously heating to 485
~560 DEG C, 6~8h is incubated, then 460~480 DEG C are cooled to the rate of temperature fall of 20~25 DEG C/h, be incubated 2~4h.
In the present embodiment, Homogenization Treatments are different from Homogenization Treatments of the prior art, and three-level is used in the present embodiment
Homogenization Treatments, that is to say and operated by heating and heat preservation twice, then by insulation operation of once lowering the temperature, finally with specific speed
(20~25 DEG C/h) are cooled down, and the operation of secondary temperature elevation insulation makes ingot casting uniformity coefficient higher, last time cooling behaviour
Make, insulation is conducive to Secondary phase particle uniform tiny precipitation in ingot casting, be conducive to improving the plasticity of ingot casting, reduce resistance of deformation,
Be conducive to the fabricated product of ingot casting or the end-use properties of casting.For example：Corrosion resistance is improved, lamellar tissue is prevented, weakens material
The every abnormity of material, raising structure stability, prevent creep from causing material shape size to change etc..
S6, hot rolling：
Hot rolling treatment includes carrying out multi- pass rolling to aluminium alloy cast ingot, in multi- pass rolling, is cast with to aluminium alloy
Ingot is sprayed emulsion and working roll is cleared up using cleaning roller.
Specifically, 30~35 passes will be carried out through roll through the aluminium alloy cast ingot after Homogenization Treatments, and is being cleaned with water
The cleaning frequency of roller be 20~30 frequencys/min under conditions of, to aluminium alloy cast ingot injection concentration be 7.0%~7.5% emulsification
Liquid, the thick middle coiled materials of 2.5~7.5mm are rolled to by aluminium alloy cast ingot, and roll rotational speed is 400~500rpm, and roller pressing power is
250~320N, finishing temperature is 300~380 DEG C.
Wherein the flow of emulsion is the 3%~5% of emulsion total flow, and injection pressure is 0.3~0.6MPa.Emulsion
Glyceride content percentage be 24~25%.
Using the hot rolling technology of " control passage+brush roll+emulsion " in the present embodiment, the surface quality of rolling is set to reduce surface
Secret note and chromatic aberration defect are minimum.So that the surface quality and surface roughness of alloy are greatly taken on a new look.
In the prior art, the fat content of emulsion is generally 20%, and the grease that emulsion is improve in the present embodiment contains
To 24~25%, emulsion plays a part of to lubricate and cools down amount in the operation of rolling, and wherein lubrication can be effectively reduced
Frictional force in the operation of rolling, so as to significantly drop frictional force.To obtain good version type, reduce roller and damage and rolling heat, extension is rolled
Roller service life.In the present embodiment, fat content is high, is conducive to the thickness of the oil lamella of increase emulsion, is more beneficial for sheet material
Surface is smooth.
It is S7, cold rolling：Middle coiled material is obtained into aluminum alloy coiled materials after cold rolling, Cold Reduction is 55~75%.This implementation
Example in it is cold rolling carried out on 6 roller CVC milling trains, degree of deformation is bigger when cold rolling, the crystal grain for obtaining just smaller, cold rolling deformation
It is 55~75% to measure, and with deformation quantity higher, improves the plasticity of alloy.
S8, annealing：Aluminum alloy coiled materials are incubated 2~4 hours under the conditions of 100~500 DEG C, and are draw textured, drawn
It is 0.5~1.5% to stretch deflection.What the annealing in the present embodiment was carried out on continuous heat-treating drier.
Above production technology can use following equipment：60 tonnes of tipping smelting furnaces and holding furnace；Magnetic stirrer
(ABB)；Trucd mixer；Forklift for slag；Stove surveys purifier (STAS)；The online depassing unit of double stage tandem；Twin-stage ceramic filter plate
(30PPI+50PPI)；Chute is added a cover in electrical heating；Online crystal grain refinement device, hydraulic standing inner guide type casting system and technique are flat
Platform (Wagstaff)；Qi Zhulu and corollary apparatus；Wiper；Online hydrogen meter；Online slag instrument (LiMCA CM) of surveying surveys slag instrument.
In the present embodiment, by the chemical composition to aluminium alloy anode oxide plate be defined in standard base with it is excellent
Change, so as to by the possibility reduction of the defects such as the secret note and aberration of the presence of aluminium alloy anode oxide plate, so as to reduce aluminium alloy
The surface roughness of anode oxidation board, further lifts the surface quality of aluminium alloy anode oxide plate.And combine aluminum alloy anode
The production method for aoxidizing plate further lifts the surface quality of aluminium alloy anode oxide plate by technological operation.That is to say by control
System uses multistage purification technology (that is to say in gaseous mixture refining, degasification removal of impurities and crystal grain refinement) to melt, makes ingot metallurgy matter
Amount reaches the level of High Purity, meets ingot metallurgy quality：1 grade of grain size；[H]≤0.1ml/100gAl；Na ＜ 2PPm；Ca
＜ 4PPm；Slag ＜ 50K/kg.Meanwhile, control the parameter of three-level Homogenization Treatments, it is ensured that aluminium alloy cast ingot uniformity coefficient is higher, produce
The forming property and mechanical property of product are more excellent.Further, to the ginseng of the technique (multi-pass+cleaning roller+emulsion) of hot rolling
Number is selected and limited, while selecting the fat content of the emulsion in hot rolling technology, makes the surface cleaning of alloy
Exquisiteness, color and luster is homogeneous, while the setting of emulsion improves the situation of alloy crack, rational oil content avoids the product of oil mark
Raw, while being easier the operation of rolling, effect of rolling is more preferable." secret note " of alloy and " patch aluminium " defect is set to be preferably minimized and not show,
So that the surface quality and surface roughness of alloy are greatly taken on a new look.
With reference to embodiment, the present invention is further described.
The chemical constituent of embodiment 1~6 is shown in Table 2.
The chemical composition and mass percent of the aluminium alloy anode oxide plate that each embodiment of table 2. is provided
Embodiment 1
The aluminium alloy anode oxide plate of the present embodiment is prepared from by following production method, specifically includes following step
Suddenly：
S1, melting：Prepare by the chemical composition of the aluminium alloy anode oxide plate of embodiment 1 in table 2 and mass percent
Raw material, aluminium alloy stock includes by mass percentage：Solid aluminium material 35%, aluminium scrap material 35% and electrolyte 30%.Wherein,
The composition of solid aluminium material is Al, and aluminium scrap material is the arm of angle material of identical alloying component.Smelting aluminium alloy is former under conditions of 720 DEG C
Expect and stir and to obtain melt, sampling analysis, the chemical composition for controlling solution is Si：0.07；Fe：0.16；Cu：0.03；Mn：0.07；
Mg：2.4；Cr：0.18；Zn：0.007；Ti：0.015.
Melt is cast as into aluminium alloy cast ingot according to conventional production process, and aluminium alloy cast ingot is carried out into hot rolling treatment being rolled to
The middle coiled material of 2.5~7.5mm of thickness, by operations such as the cold rolling, annealing of middle coiled material.
Embodiment 2
The aluminium alloy anode oxide plate of the present embodiment is prepared from by following production method, specifically includes following step
Suddenly：
S1, melting：Prepare by the chemical composition of the aluminium alloy anode oxide plate of embodiment 2 in table 2 and mass percent
Raw material, aluminium alloy stock includes by mass percentage：Solid aluminium material 35%, aluminium scrap material 35% and electrolyte 30%.Wherein,
The composition of solid aluminium material is Al, and aluminium scrap material is the arm of angle material of identical alloying component.Smelting aluminium alloy is former under conditions of 720 DEG C
Expect and stir and to obtain melt, sampling analysis, the chemical composition for controlling solution is to meet the index in table 2.
S2, multistage purification treatment：By melt transfer to holding furnace, furnace side Ar and Cl are carried out2Gaseous mixture is refined, and melt is passed through
SNIF degassing apparatus carries out melt degasification；Then the foamed ceramic panel of 30PPI and 50PPI is separately heated to 600 DEG C, makes melt
The foamed ceramic panel for sequentially passing through 30PPI and 50PPI carries out melt filtration.After degasification removal of impurities, added in toward melt rotten
Agent, melt is 100 with the mass ratio of alterant：0.01 carries out crystal grain refinement treatment, after the completion for the treatment of,
S3, casting：By melt cast into aluminium alloy cast ingot (620 × 1000 × 8650mm).
S4, milling face：The expanding end of aluminium alloy cast ingot and gate end sawing are fallen, ingot casting upper and lower surface and two sides are carried out
Milling face；
S5, Homogenization Treatments：Aluminium alloy cast ingot behind sawing milling face is carried out into conventional Homogenization Treatments, specially by aluminium
Alloy cast ingot is heated to 480 DEG C in step-by-step movement propulsion stove, is incubated 10h.
S6, hot rolling：30 passes are carried out through roll, and under conditions of play frequency is 20 frequencys/min, aluminium is closed
Golden ingot casting injection concentration is 7.0% emulsion, and aluminium alloy cast ingot is rolled into the thick middle coiled materials of 6.5mm, and the speed of roll is
400rpm, the throw-on pressure of roll is 250N, and finishing temperature is 330 DEG C.Wherein emulsification flow quantity is the 3% of emulsion total flow,
Injection pressure is 0.3MPa.The glyceride content percentage of emulsion is 24%.Curl tension and crimping roller the roughness such as institute of table 3
Show, greatly improve 5052 alloy base material hot rolled coil surface quality, efficiently solve secret note and aberration after surface anodization and lack
Fall into.
The curl tension of table 3. and crimping roller roughness
It is S7, cold rolling：Middle coiled material is obtained into aluminum alloy coiled materials after cold rolling, Cold Reduction is 55%.
S8, annealing：Aluminum alloy coiled materials are incubated 2~4 hours under the conditions of 500 DEG C, and are draw textured, stretcher strain
Measure is 0.5~1.5%.
Embodiment 3
The aluminium alloy anode oxide plate of the present embodiment is prepared from by following production method, specifically includes following step
Suddenly：
S1, melting：Prepare by the chemical composition of the aluminium alloy anode oxide plate of embodiment 3 in table 2 and mass percent
Raw material, aluminium alloy stock includes by mass percentage：Solid aluminium material 40%, aluminium scrap material 40% and electrolyte 20%.Wherein,
The composition of solid aluminium material is Al, and aluminium scrap material is the arm of angle material of identical alloying component.Smelting aluminium alloy is former under conditions of 750 DEG C
Material, when the 50%~60% of aluminium alloy stock is molten into aluminium liquid, opens electromagnetic agitation, the scum silica frost on aluminium liquid surface is removed, logical
Manganese agent is uniformly put into molten bath as component additive agent under normal operation temperature (i.e. 710 DEG C~750 DEG C), is sufficiently stirred for 5
~10 minutes, 10~15 minutes after should being stood after being sufficiently stirred for, and skimmed, adjusting component.Sampling analysis, control solution
Chemical composition meets the index in table 5.
S2, multistage purification treatment
Then transfer melt carries out furnace side Ar and Cl to holding furnace2Gaseous mixture is refined, and composition is qualified and casting is made adequate preparation
Afterwards, melt stands appropriate time.By melt under the conditions of 710 DEG C, melt is carried out into melt degasification through SNIF degassing apparatus；Then
The foamed ceramic panel of 30PPI and 50PPI is separately heated to 750 DEG C, the foam for making melt sequentially pass through 30PPI and 50PPI is made pottery
Porcelain plate carries out melt filtration.After degasification removal of impurities, alterant is added in toward melt, melt is 100 with the mass ratio of alterant：
0.02 carries out crystal grain refinement treatment.
S3, casting：After the completion for the treatment of, by melt cast into aluminium alloy cast ingot (620 × 2800 × 9650mm).
S4, milling face：The expanding end of aluminium alloy cast ingot and gate end sawing are fallen, ingot casting upper and lower surface and two sides are carried out
Milling face.
S5, Homogenization Treatments：Aluminium alloy cast ingot behind sawing milling face is warming up to 460 DEG C with the programming rate of 30 DEG C/h,
Insulation 10h；485 DEG C are continuously heating to, 6h is incubated, 460 DEG C are cooled to the rate of temperature fall of 20 DEG C/h, be incubated 2h.
S6, hot rolling：35 passes are carried out through roll, and under conditions of play frequency is 30 frequencys/min, aluminium is closed
Golden ingot casting injection concentration is 7.5% emulsion, and aluminium alloy cast ingot is rolled into the thick middle coiled materials of 6mm, and the speed of roll is
500rpm, the throw-on pressure of roll is 320N, and finishing temperature is 380 DEG C.Wherein emulsification flow quantity is the 5% of emulsion total flow,
Injection pressure is 0.6MPa.The glyceride content percentage of emulsion is 25%.Curl tension and crimping roller the roughness such as institute of table 4
Show, greatly improve 5052 alloy base material hot rolled coil surface quality, efficiently solve secret note and aberration after surface anodization and lack
Fall into.
The curl tension of table 4 and crimping roller roughness
It is S7, cold rolling：Middle coiled material is obtained into aluminum alloy coiled materials after cold rolling, Cold Reduction is 75%.
S8, annealing：Aluminum alloy coiled materials are incubated 2~4 hours under the conditions of 100~500 DEG C, and are draw textured, drawn
It is 0.5~1.5% to stretch deflection.
Embodiment 4
The aluminium alloy anode oxide plate of the present embodiment is prepared from by following production method, specifically includes following step
Suddenly：
S1, melting：Prepare by the chemical composition of the aluminium alloy anode oxide plate of embodiment 4 in table 2 and mass percent
Raw material, aluminium alloy stock includes by mass percentage：Solid aluminium material 40%, aluminium scrap material 40% and electrolyte 20%.Wherein,
The composition of solid aluminium material is Al, and aluminium scrap material is the arm of angle material of identical alloying component.Smelting aluminium alloy is former under conditions of 730 DEG C
Material, when the 55% of aluminium alloy stock is molten into aluminium liquid, opens electromagnetic agitation, the scum silica frost on aluminium liquid surface is removed, in common behaviour
Make uniformly to put into molten bath manganese agent as component additive agent at temperature (i.e. 710 DEG C~750 DEG C), be sufficiently stirred for 5~10 points
Clock, 10~15 minutes after should being stood after being sufficiently stirred for, and skimmed, adjusting component.
S2, multistage purification treatment
Then transfer melt carries out furnace side Ar and Cl to holding furnace2Gaseous mixture is refined, and composition is qualified and casting is made adequate preparation
Afterwards, melt stands appropriate time.By melt under the conditions of 710 DEG C, melt is carried out into melt degasification through SNIF degassing apparatus；Then
The foamed ceramic panel of 30PPI and 50PPI is separately heated to 600 DEG C, the foam for making melt sequentially pass through 30PPI and 50PPI is made pottery
Porcelain plate carries out melt filtration.After degasification removal of impurities, alterant is added in toward melt, melt is 100 with the mass ratio of alterant：
0.03 carries out crystal grain refinement treatment.
S3, casting：After the completion for the treatment of, by melt cast into aluminium alloy cast ingot (620 × 2000 × 7650mm).
S4, milling face：The expanding end of aluminium alloy cast ingot and gate end sawing are fallen, ingot casting upper and lower surface and two sides are carried out
Milling face.
S5, Homogenization Treatments：Aluminium alloy cast ingot behind sawing milling face is warming up to 470 DEG C with the programming rate of 40 DEG C/h,
Insulation 10h；560 DEG C are continuously heating to, 8h is incubated, then 480 DEG C are cooled to the rate of temperature fall of 25 DEG C/h, be incubated 4h.
S6, hot rolling：33 passes are carried out through roll, and under conditions of play frequency is 25 frequencys/min, aluminium is closed
Golden ingot casting injection concentration is 7.3% emulsion, and aluminium alloy cast ingot is rolled into the thick middle coiled materials of 7.5mm, and the speed of roll is
450rpm, the throw-on pressure of roll is 300N, and finishing temperature is 350 DEG C.Wherein emulsification flow quantity is the 4% of emulsion total flow,
Injection pressure is 0.5MPa.The glyceride content percentage of emulsion is 25%.Curl tension and crimping roller the roughness such as institute of table 5
Show, greatly improve 5052 alloy base material hot rolled coil surface quality, efficiently solve secret note and aberration after surface anodization and lack
Fall into.
The curl tension of table 5. and crimping roller roughness
It is S7, cold rolling：Middle coiled material is obtained into aluminum alloy coiled materials after cold rolling, Cold Reduction is 55~75%.
S8, annealing：Aluminum alloy coiled materials are incubated 2~4 hours under the conditions of 100~500 DEG C, and are draw textured, drawn
It is 0.5~1.5% to stretch deflection.
Embodiment 5
The production method of the aluminium alloy anode oxide plate that the present embodiment is provided is substantially same as Example 4, and difference exists
In：In the present embodiment in S1, melting step, by table 2 embodiment 5 provide aluminium alloy anode oxide plate chemical composition with
And mass percent prepares raw material, additionally, in the present embodiment, parameter is different in the Homogenization Treatments of step S5.
S5, Homogenization Treatments：Aluminium alloy cast ingot behind sawing milling face is warming up to 460 DEG C with the programming rate of 30 DEG C/h,
Insulation 8h；520 DEG C are continuously heating to, 7h is incubated, 470 DEG C are cooled to the rate of temperature fall of 23 DEG C/h, be incubated 3h.
Embodiment 6
The production method of the aluminium alloy anode oxide plate that the present embodiment is provided is substantially same as Example 3, and difference exists
In：In the present embodiment in S1, melting step, by table 2 embodiment 6 provide aluminium alloy anode oxide plate chemical composition with
And mass percent prepares raw material, additionally, in the present embodiment, parameter is different in the hot rolling of step S6.
S6, hot rolling：33 passes will be carried out through roll through the aluminium alloy cast ingot after Homogenization Treatments, and in play frequency
Under conditions of for 22 frequencys/min, to the emulsion that aluminium alloy cast ingot injection concentration is 7.4%, aluminium alloy cast ingot is rolled to
2.5mm thick middle coiled material, the speed of roll is 430rpm, and the throw-on pressure of roll is 270N, and finishing temperature is 370 DEG C.
Comparative example
Firstth, the selection of the mass percent of the chemical composition of aluminium alloy anode oxide plate
The chemical composition and mass percent of the aluminium alloy anode oxide plate that each embodiment of table 6. is provided
The chemical composition and its mass percent of the aluminium alloy anode oxide plate provided according to above-mentioned 8 experimental examples are matched somebody with somebody
Material, and method according to the offer of embodiment 1 carries out the processing of aluminium alloy anode oxide plate, that is to say, according to conventional production
Method is processed.Big crystal grain, light and shade striped, longitudinal corrosion depth, transverse direction are carried out to obtained 8 aluminium alloy anode oxide plates
The measure of corrosion depth and surface homogeneity, measurement result is as follows：
Influence of the chemical composition of the aluminium alloy anode oxide plate of table 7. to its performance
By table 7, it is apparent that embodiment 1~6 does not produce big crystal grain and light and shade fringe phenomena, and the He of comparative example 1
There is big crystal grain and light and shade fringe phenomena in the aluminium alloy anode oxide plate that comparative example 2 is provided.
Wherein, big crystal grain phenomenon Producing reason is that a) heat treating regime is improper；B) ingot chemistry is controlled not
When.And light and shade fringe phenomena Producing reason is：A) ingot surface quality is poor, and hot rolling does not have milling face again；B) steel slab surface group
Knitting inequality has coarse grain.Because embodiment 1~6 and comparative example 1~2 are prepared using identical production method, produce big brilliant
Grain and light and shade fringe phenomena are main reason is that the chemical composition of the aluminium alloy anode oxide plate of the offer of embodiment 1~6 is more closed
Reason, big crystal grain and light and shade fringe phenomena can be improved by controlling chemical composition.
The aluminium alloy anode oxide that the aluminium alloy anode oxide plate and comparative example 1~2 that embodiment 1~6 is provided are provided
Plate is respectively placed in corrosive liquid and soaks longitudinal corrosion depth for being formed after the surface corrosion pattern after 24h and corrosion and laterally rotten
Depth is lost to judge 8 corrosion resistancies of test example.Wherein, table after the aluminium alloy anode oxide plate corrosion that embodiment 1~6 is provided
The sign that face metal is peeled off in bulk, meanwhile, the aluminium alloy anode oxide plate corrosion depth and peeling area of embodiment 3~6 are small
In the aluminium alloy anode oxide plate of embodiment 1~2, and corrosion depth and the peeling of the aluminium alloy anode oxide plate of comparative example 1~2
The aluminium alloy anode oxide plate that area is provided greatly much larger than embodiment 1~6.
Further, since intensity is larger in comparative example, second phase particles are thick, cause the surface of aluminium alloy anode oxide plate to hold
Easy crackle.
As can be seen here, by improving the mass percent of the chemical composition of aluminium alloy anode oxide plate, aluminium alloy can be reduced
The slivering of anode oxidation board and the generation of oil mark, while improving corrosion resistance, and enable aluminum alloy to the surface of anode oxidation board more
It is clean fine and smooth.
Secondth, the selection of the production method of aluminium alloy anode oxide plate
Chemical constituent and mass percent according to the aluminium alloy anode oxide plate in table 6 carry out dispensing, and implement
The production method processing aluminium alloy anode oxide plate that the correspondence of example 1 is provided using embodiment 1, the correspondence of embodiment 2 is carried using embodiment 2
The production method processing aluminium alloy anode oxide plate of confession, the like, the producer that the correspondence of embodiment 6 is provided using embodiment 6
Method processes aluminium alloy anode oxide plate.And the production method processing aluminium that comparative example 1 and comparative example 2 are provided using embodiment 3 is closed
Gold anode aoxidizes plate.Big crystal grain, light and shade striped, longitudinal corrosion depth, transverse direction are carried out to obtained 8 aluminium alloy anode oxide plates
The measure of corrosion depth and surface homogeneity, measurement result is as follows：
Influence of the production method of the aluminium alloy anode oxide plate of table 8. to its performance
By contrast table 7 and table 8, it will be evident that do not change the chemistry of embodiment 1~6 and comparative example 1~2 into
In the case of point, change production method, corrosion resistance can be obviously improved, while enabling aluminum alloy to buckling performance and the weldering of sheet material
Connect performance more preferably.
3rd, the parameter selection of Homogenization Treatments
The parameter selection data of the Homogenization Treatments of table 9.
Aluminium alloy cast ingot without Homogenization Treatments has serious microstructure segregation, and alloy is equal through 560 DEG C × 20h monopoles
After homogenizing treatment, the non-equilibrium phase on crystal boundary has been reduced, and has formed discontinuously arranged, and component segregation is improved；Extension is single
After the time of level Homogenization Treatments (560 DEG C × 36h), the change of its crystal boundary effect is not notable.Increase on the basis of monopole homogenization
The post drop insulation of 300 DEG C × 6h, uniformization effect is more preferable, the dissolving increasing number of non-equilibrium phase, and crystal boundary is more straight, and
Shape is regular, and ingot casting intensity is big, and rigidity is strong；Additionally, increasing the early stage insulation of 470 DEG C × 10h on the basis of being homogenized in single-stage
Uniformization effect is more preferable, the dissolving increasing number of non-equilibrium phase, and crystal boundary is more straight, and shape is regular, eliminates ingot casting crystal boundary
On nonequilibrium freezing eutectic structure, crystal boundary is in linear, but ingot casting intensity is small, easy fracture.And through 470 DEG C × 10h+560 DEG C
After × 8h+480 DEG C × 4h three-level Homogenization Treatments, the nonequilibrium freezing eutectic structure on ingot casting crystal boundary is eliminated, crystal boundary is in line
Strip, after Ageing Treatment, its mechanical property is more excellent.
4th, the fat content parameter selection of emulsion
The fat content parameter selection data of the emulsion of table 10.
| Test example | Fat content | Sheet material smoothness | Rolling situation |
| Embodiment 4 | 25% | Surface is smooth, homogeneous | High lubricating effect, draught pressure is moderate |
| Comparative example 8 | 20% | There is crackle in surface | Corresponding lubrication can not be provided, draught pressure is higher |
| Comparative example 9 | 30% | Surface is smooth, uneven thickness | There is skidding in high lubricating effect, the operation of rolling |
| Comparative example 10 | 35% | There is oil mark in surface | High lubricating effect, rolls more difficult |
Emulsion can play a part of to lubricate and cool down in the operation of rolling, when fat content is low in emulsion, plate
Easily there is crackle in material, it is difficult to meet the requirement of aluminium alloy anode oxide plate, and when fat content is high in emulsion, sheet material holds
Easily there is oil mark, while there is a problem of skidding or being difficult to roll in the operation of rolling, cannot also be satisfied with aluminium alloy anode oxide
The requirement of plate, by the continuous selection and optimization to emulsion in the present embodiment, it is determined that emulsion fat content for 24~
When 25%, its lubricant effect is optimal, and meets the requirement of aluminium alloy anode oxide plate " zero-fault ", that is to say, meets its table
Face requires clean exquisiteness, and color and luster is homogeneous, is not allow for crackle, burn into break-through stomata, peeling, metal and nonmetallic press-in thing, wipes
Hinder, scratch, press the macroscopic mass defect such as trace, slivering, oil mark, bright band, blanking bar that prints.
5th, the selection of hot rolling technology
The selection data of the hot rolling technology of table 11.
The surface of the middle coiled material that the hot rolling technology treatment provided by embodiment 3 is obtained is smooth, surface free from admixture, rolls
System is easy, forming degree is high and nothing " patch aluminium " phenomenon.
, merely through the rolling of multi-pass, without emulsion lubrication in the operation of rolling, pressure is big needed for rolling for comparative example 11,
Rolled under the depended on pressure of 300N difficult.Additionally, there is " patch aluminium " phenomenon in coiled material surface.
Comparative example 12 makes coiled material surface clean-up performance high by the technique of " passage+brush roll ", but without emulsification in the operation of rolling
Liquid lubricates, and pressure is big needed for rolling, is rolled under the depended on pressure of 300N difficult.
Comparative example 13 makes the lubricity of coiled material surface good by the technique of " passage+emulsion ", and uniformity is also preferable, but
There is " patch aluminium " phenomenon in coiled material surface.
In the prior art mostly using the technique in comparative example 11 or comparative example 12, in the operation of rolling, rolling is increased
Depended on pressure, this kind of method increases production cost, meanwhile, the lubrication without emulsion and cooling effect in the operation of rolling, rolling are tired
Hardly possible cannot be rolled.
6th, the selection of technique is purified
The selection data of the hot rolling technology of table 12.
Requirement to aluminium alloy melt degree of purity, the difference for being typically due to kind and purposes has certain difference.Generally
Hydrogen content requirement is less than 0.2ml/100gAl, but should be in below 0.1ml/100gAl for the aeronautical material of particular/special requirement.Sodium contains
Amount should be in below 5ppm；Non-metallic inclusion is not allow for the particle and aggregation of 1~5Lm sizes, inclusion content it is more low more
It is good.And grain size is measuring for grain size.Combined by upper table, in the present embodiment and use multistage purification technique, make to melt
The hydrogen content and impurity content of body are greatly lowered, while grain size meets 1 grade of requirement.In sum, the embodiment of the present invention
Chemical composition to 5052,5252 aluminium alloy anode oxide coiled materials is optimized, and improves the tissue of aluminium alloy anode oxide plate
The combination property of structure and alloy reaches the requirement of anodic oxidation.Meanwhile, during melt melting and casting, cleaning molten is used
Multi-stage combination cleaning molten technology (that is to say online process step), ingot metallurgy quality is reached the level of High Purity, make casting
Ingot metallurgy quality meets：1 grade of grain size；[H]≤0.1ml/100gAl；Na ＜ 2PPm；Ca ＜ 4PPm；Slag ＜ 50K/kg.Product
Forming property and mechanical property it is more excellent.Additionally, the embodiment of the present invention is by the parameter and Hot-roller to Homogenization Treatments
The parameter of skill is selected and limited, while selecting the fat content of the emulsion in hot rolling technology, makes the table of alloy
Face cleaning is fine and smooth, and color and luster is homogeneous, while the setting of emulsion improves the situation of alloy crack, rational oil content avoids oil
The generation of spot, while being easier the operation of rolling, effect of rolling is more preferable." secret note " of alloy and " patch aluminium " defect is set to drop to most
It is low, so that the surface quality and surface roughness of alloy are greatly taken on a new look.
Embodiments described above is a part of embodiment of the invention, rather than whole embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of aluminium alloy anode oxide plate, it is characterised in that its chemical composition includes according to mass percentage：Si:≤
0.1%；Fe:≤ 0.2%；Cu:≤ 0.1%；Mn:≤ 0.1%；Mg:2.2~2.5%；Cr:0.15~0.20%；Zn:≤
0.1%；Ti:≤ 0.1%；Balance of Al.
2. aluminium alloy anode oxide plate according to claim 1, it is characterised in that according to mass percentage, the aluminium
The chemical composition of alloy anode oxidation plate includes：Si:0.04~0.07%；Fe:0.12~0.16%；Cu:0.03~0.09%；
Mn:0.06~0.08%；Mg:2.4~2.5%；Cr:0.15%~0.20%；Zn:0.001~0.014%；Ti:0.01~
0.02%；Balance of Al.
3. a kind of production method of aluminium alloy anode oxide plate, it is characterised in that it includes：Aluminium alloy stock is smelted into molten
Body, sampling analysis, the chemical composition for controlling the melt is：Si:≤ 0.1%；Fe:≤ 0.2%；Cu:≤ 0.1%；Mn:≤
0.1%；Mg:2.2~2.5%；Cr:0.15~0.20%；Zn:≤ 0.1%；Ti:≤ 0.1%；Balance of Al；
It is middle coiled material by the hot rolled treatment of the aluminium alloy cast ingot, in described by the melt casting into aluminium alloy cast ingot
Between coiled material is cold rolling, annealed tensile；
Wherein, the aluminium alloy stock includes by mass percentage：Solid aluminium material 35~40%, aluminium scrap material 35~40% and
Electrolyte 20~30%.
4. the production method of aluminium alloy anode oxide plate according to claim 3, it is characterised in that the hot rolling treatment bag
Include carries out multi- pass rolling with roll to the aluminium alloy cast ingot, in the multi- pass rolling, is cast with to the aluminium alloy
Ingot is sprayed emulsion and the roll is cleared up using cleaning roller.
5. the production method of aluminium alloy anode oxide plate according to claim 4, it is characterised in that the multi- pass rolling
Rolling number of times be 30~35 passages, the rotating speed of the roll is 400~500rpm, the throw-on pressure of the roll for 250~
320N, finishing temperature is 300~380 DEG C, and the cleaning frequency of the cleaning roller is 20~30 frequencys/min.
6. the production method of the aluminium alloy anode oxide plate according to any one of claim 4~5, it is characterised in that described
The injection flow of emulsion is the 3%~5% of the emulsion total flow, and injection pressure is 0.3~0.6MPa, the emulsion
Glyceride content percentage be 24~25%.
7. the production method of aluminium alloy anode oxide plate according to claim 3, it is characterised in that the aluminium alloy is former
Material melting includes：By aluminium alloy stock melting under conditions of 720~750 DEG C, the aluminium alloy stock 50%~60%
When being molten into aluminium liquid, 30~40min is stirred, after the aluminium alloy stock all melts, added as the manganese of component additive agent
Agent.
8. the production method of aluminium alloy anode oxide plate according to claim 3, it is characterised in that closed in aluminium described in melting
After golden raw material, before the melt is cast, also including carrying out multistage purification treatment to the melt, at the multistage purification
Reason includes：
Gaseous mixture is refined：The melt is gone to and carried out in holding furnace furnace side Ar and Cl2Gaseous mixture is refined；
Degasification removal of impurities：The melt is carried out into melt degasification through SNIF degassing apparatus；Then the foam of 30PPI and 50PPI is made pottery
Porcelain plate is separately heated to 600~750 DEG C, makes that the melt sequentially passes through the 30PPI and the foamed ceramic panel of 50PPI is melted
Body is filtered；And
Crystal grain refinement：Alterant is added toward the melt, the melt is 100 with the mass ratio of the alterant：0.01~
0.03。
9. the production method of aluminium alloy anode oxide plate according to claim 3, it is characterised in that in the hot rolling treatment
Before, also including aluminium alloy cast ingot described in Homogenization Treatments：460 are warming up to the programming rate of 30~40 DEG C/h to the ingot casting
~470 DEG C, it is incubated 10~12h；477~560 DEG C are continuously heating to, 6~8h is incubated, then drop with the rate of temperature fall of 20~25 DEG C/h
Temperature is incubated 2~4h to 460~480 DEG C.
10. the production method of aluminium alloy anode oxide plate according to claim 3, it is characterised in that cold rolling, annealed tensile
The middle coiled material generation deformation, the deformation quantity of the deformation includes at least one of Cold Reduction and tensile deformation amount,
The Cold Reduction is 55~75%；The tensile deformation amount is 0.5~1.5%.
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| CN110964955A (en) * | 2019-12-19 | 2020-04-07 | 广西南南铝加工有限公司 | Production method of 5052 aluminum alloy wafer for electric cooker liner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107502794A (en) * | 2017-07-26 | 2017-12-22 | 中铝瑞闽股份有限公司 | A kind of phone housing aluminium alloy strips and preparation method thereof |
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| CN111254330A (en) * | 2020-03-03 | 2020-06-09 | 中铝瑞闽股份有限公司 | Aluminum alloy strip for computer bracket and preparation method thereof |
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