CN106521373B - A kind of granule surface contral technique of anodic oxidation aluminium alloy - Google Patents
A kind of granule surface contral technique of anodic oxidation aluminium alloy Download PDFInfo
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- CN106521373B CN106521373B CN201611197774.3A CN201611197774A CN106521373B CN 106521373 B CN106521373 B CN 106521373B CN 201611197774 A CN201611197774 A CN 201611197774A CN 106521373 B CN106521373 B CN 106521373B
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- aluminium
- anodic oxidation
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- aluminium alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
Abstract
The present invention discloses a kind of granule surface contral technique of anodic oxidation aluminium alloy, and steps are as follows：（1）Aluminium alloy plate ingot first carries out Homogenization Treatments at 450~490 DEG C；（2）Hot rolling：By the aluminium alloy plate ingot of Homogenization Treatments in 410~460 DEG C of open rollings, the roughness of hot roll is 0.75~0.95 μm；（3）Cold rolling：The roll that roughness is 0.50~0.65 μm is first used to roll three passages, then the roll for being 0.30~0.38 μm with roughness rolls two passages, is cleaned after cold rolling.Present invention process is produced suitable for big batch metaplasia, grade same as refined aluminium 1A95 alloy products can also be reached by processing the soft state product surface brightness after anodic oxidation and mold-filling capacity using 1090 aluminum alloy sheets and strips of general aluminium, the brightness degree of 1090 hard state alloy products also basically reaches the performance indicator of imported product, product competitiveness in the market is apparent, remarkable in economical benefits.
Description
Technical field
The invention belongs to aluminium alloy manufacture fields, and in particular to a kind of granule surface contral technique of anodic oxidation aluminium alloy.
Background technology
1090 aluminium alloys of anodic oxidation belong to international with commercial-purity aluminium at present（Aluminium purity is >=99.90%, is not surpassed generally
Cross 99.93%）For base material, it is widely used in the alloy product of the highest level in illumination and decoration field, by its use state, again
It is divided into anodic oxidation with soft state（State containing medium-soft）Product and the hard state product of anodic oxidation, 1090 soft states of Anodic Oxidation
（State containing medium-soft）Product, with reflective 1090 reflectors of Mingguang City's type（The country is also referred to as reflector）For represent, product with high brightness,
With the characteristics of high forming ability, it is widely used in indoor and outdoor and field is shone in traffic；And 1090 hard state products of anodic oxidation, then with
1090 mirror boards are representative（1085 mirror boards used in Germany's peace aluminium are Ti contents beyond BSEN 573-3-2009 control models
Product after enclosing, base material aluminium purity ＞ 99.90%, so it is included in the scope of 1090 aluminium alloys in the industry）, product has
Quality characteristic of the high brightness without shading, is widely used in the fields such as high-end traffic, decoration, indoor and outdoor lighting.The country is being handed at present
The alloy product in logical illumination and decoration field, concentrates on grade aluminium alloys, the reflecting rates such as 1070 and 1050,1060 of low and middle-end and exists
60~70%, the processing method of such product, in addition to DC（Hot rolling）Outside processing method, or even also CC（Casting rolls）It rolls
The method of system produces, the missing of this core technology and the disorderly competition of domestic market, not only results in domestic enterprise's exploitation
The investment risk of 1090 high-end anodic oxidation materials increases, while also causing the paces of China's exploitation anodic oxidation product high-endization
Stagnation.
The specific processing technology of 1090 aluminium alloys of anodic oxidation, is slightly different with the difference of its product purpose, still,
It finally has to pass through the technological process requirement of anodic oxidation and essentially identical product quality demand, determines that anodic oxidation is used
The typical technology path of 1090 alloy products is as follows：
1）, anodic oxidation 1090 aluminium alloy typical technology route of hard state
Anodic oxidation 1090 aluminium alloy of hard state, main processing flow are needed by the casting of plate ingot, the sawing of plate ingot and milling
Face, plate ingot homogenization and hot-working, the cold working of plate ingot, the cleaning of plank thickness material, plank intermediate heat-treatment, plank mirror finish, plate
Material straightening and trimming, plank cleaning and overlay film, plank anodic oxidation, wait ten key links.But for technical difficulty, minute surface
The four processes such as the casting of plate ingot, the hot-working of plate ingot, the cold working of plate ingot and intermediate heat-treatment before processing, are the cores of entire industry
Where technology, also, there is also the internal relations of mutually check and balance for this four processes, specifically, anodic oxidation is used
The typical technology route of 1090 product of hard state is as follows：
Casting → → plate ingot the sawing of plate ingot and milling face → → plate ingot homogenization → → hot rolling → → cold rolling → → intermediate annealing
→ → minute surface rolling → → straightening trimming → → cleaning overlay film → → anodic oxidation → → finished product
2）, anodic oxidation 1090 aluminium alloy typical technology route of soft state
Anodic oxidation 1090 alloy product of soft state, because there are notable differences with hard state product for purposes usage, so
There is also a degree of difference, most typical processing flow on processing flow includes mainly：The casting of plate ingot, the sawing of plate ingot and milling
Face, plate ingot homogenization and hot-working, the cold working of plate ingot, coiled material cleaning, coil annealing, coiled material open plate, plate stamping molding, anode
The nine big links such as oxidation, the technological core of entire industry still concentrate on the casting of plate ingot, plate ingot homogenization and hot-working, plate ingot
Several core links such as surface treatment, specifically, the typical technology route of anodic oxidation 1090 alloy product of soft state is such as
Under：
Casting → → plate ingot the sawing of plate ingot and milling face → → plate ingot homogenization → → hot rolling → → cold rolling → → cleaning → →
Plate → → punching press is opened in annealing → →（Or spinning）Molding → → anodic oxidation → → finished product.
1090 alloy products of anodic oxidation, tool are high reflecting rate respectively there are two very specific technical indicator
（It is known as brightness in the industry, while is characterized with mutually contradictory specular reflectivity and diffusing reflection rate）With it is anti-without influencing after anodic oxidation
The shading of optical uniformity.Influence the factor of reflecting rate, the oxidation being concentrated mainly on after plate ingot grain size, plate ingot aluminium purity, oxidation
Five aspects such as film uniformity and dense degree, the woollen surface uniformity and interface state of consistency and mirror finish control；
And influence the principal element of shading defect, then when concentrating on surface with interface uniformity, woollen surface cleaning and mirror finish
Three aspects such as interface state control accuracy, and interface state control accuracy when mirror finish, and concentrate on absolute draft
Amount control, plate form control and lubricating status control, these three influence each other and in the technical indicators that mutually balance.
Based on the exemplary process flow of 1090 products of anodic oxidation, the principal element of product quality is influenced
Following aspects：
1）Plate ingot is cast
1090 aluminium alloys belong to commercial-purity aluminium series of products, need the aluminium that when plate ingot is cast while solution mutually liquidates pure
Degree control controls two key problems with grain size.Aluminium Pureness control is exactly that casting process cleans control, to prevent as far as possible
Other constituent elements are introduced as principle and carry out process cleans control, and plate ingot grain size controls, and must reach the water product of level-one,
A large amount of grain refiner is objectively needed to participate in the casting of plate ingot again, moreover, product finally needs to carry out the product of anodic oxidation
Manufacture characteristic, and cause grain refiner while participating in grain size control, the B element in stringent control panel ingot, to
The weaker poor B grain refiners of grain refining effect can only be selected, need to increase making for grain refiner again to which client is upper
Dosage ensures plate ingot grain size number, leads to the increase of the content of Ti, aluminium purity is reduced again in turn, to needing aluminium pure
Higher fine aluminum liquid is spent to be cast into andante ingot（The U.S. 1090 sub- aluminium alloys in Hong Kong of most significant end in the world are exactly to use price
Very expensive aluminium purity casts 1090 aluminium alloy plate ingots for 99.95% industrial rafifinal, domestic then do not develop completely
The plate ingot of same quality level）, to sum up, core technology of this product in terms of casting, is how to use aluminium purity
Alap molten aluminum obtains the 1090 aluminium alloy plate ingots that grain size is level-one by technology controlling and process and balance, to it is low at
This commercial-purity aluminium（99.90%）Carry out cast sheet ingot, and reaches external using industrial rafifinal（99.95%）The quality of cast sheet ingot
It is horizontal.
2）The surface of hot-working and cold working is controlled with interface uniformity and spatter property
The realization on 1090 alloy product anodic oxidation purposes surfaces and interface particular/special requirement is by hot-working work and cold
Finished surface realizes that this requirement theoretically needs to realize with hot-working with based on method by arc length with interface hereditary effect
Uniform cross turns to target design hot rolling technology, realizes surface conformance as technological design core using cold working, and add by heat
The technological balance of work and cold working completes interface and Surface uniformization and consistency, and the such as U.S. sub- industry of external colleague is logical
Cross the multi-frame continuous hot-rolling mill of hot procedure（Malaysian U.S. sub- industry is " 1+3 " continuous hot-rolling mill）To realize this special work
Skill function.
3）High-elongation demand and plank organizational controls（Heat treatment）
The interface uniformity of rafifinal system product derives from structural homogenity, but height is sheerly product in casting because of aluminium purity
Very high, when casting, need to strictly control the use of grain refiner, and the structural homogenity of high pure lines product is most rambunctious.Sun
Pole aoxidize 1090 alloy products organizational controls core, concentrate on plate ingot grain size control, hot worked tissue reformation and
In terms of timeliness, the Interface Control of cold working and finished product recrystallization annealing, and this completes hot worked plate ingot homogenizing annealings
The design of technique and hot finish to gauge aging temp with cold rolling finished product annealing process and the core content in terms of balance.
4）The control of high brightness and high brightness
For reflective with 1090 alloy product of hard state, the high-end minute surface decoration of main application is used, and final products are to surface
Brightness, lightness and uniformity controlling require it is very high；It is cast from plate ingot（Component requirements）To hot-working（Granule surface contral and inside
Organizational controls）Arriving the factors such as follow-up cold rolling, heat treatment, minute surface rolling again all can be great to the brightness of final products and lightness generation
Influence, therefore to realize the requirement of high brightness and high brightness, the links in production are required for stringent control, from raw material
The Composition Control of plate ingot, control, hot rolling technique, cold rolling, annealing etc. to milling face amount must be in strict accordance with rule
It is fixed to execute.
Invention content
The purpose of the present invention is surface uniformity and spatter property control change in being produced with aluminium alloy to existing anodic oxidation
Into providing a kind of granule surface contral technique of anodic oxidation aluminium alloy so that 1090 aluminum alloy sheets and strips of general aluminium are in anodic oxygen
Surface brightness after change reaches brightness degree same as refined aluminium 1A95 alloy products.
In order to solve the above technical problem, the present invention provides the following technical solutions：
A kind of granule surface contral technique of anodic oxidation aluminium alloy, steps are as follows：
（1）Aluminium alloy plate ingot first carries out Homogenization Treatments at 450~490 DEG C；
（2）Hot rolling：By the aluminium alloy plate ingot of Homogenization Treatments in 410~460 DEG C of open rollings, the roughness of hot roll is
0.75~0.95 μm；
（3）Cold rolling：First use the roll that roughness is 0.50~0.65 μm to roll three passages, then with roughness for 0.30~
0.38 μm of roll rolls two passages, is cleaned after cold rolling.
Preferably, step（1）The time of Homogenization Treatments is 8 hours.
Preferably, step（2）Using etc. the distribution principles of drafts rolled.
Preferably, step（3）Using etc. the distribution principles of drafts rolled.
Preferably, step（3）It is cleaned using oil.
The granule surface contral technique needs that the present invention can be met using domestic common single chassis hot-rolling mill and cold rolling, are applicable in
It is produced in big batch metaplasia, production cost is low, and product disclosure satisfy that the anodized needs of various product, and makes using general
Surface brightness of 1090 aluminum alloy sheets and strips of the aluminium processing after anodic oxidation can also reach same as refined aluminium 1A95 alloy products
Brightness degree, the brightness degree and surface uniformity performance of 1090 hard state alloy products can also reach the performance of imported product
Index, practicability is extensive, and production and control difficulty and at low cost, product competitiveness in the market is apparent, remarkable in economical benefits.This technique
Suitable for 1090（It is applied equally to 1070,1080,1085 alloys of same purposes）The processing of aluminium alloy and granule surface contral.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
1 anodic oxidation aluminium alloy of embodiment（Soft state）The granule surface contral of product
First to general aluminium 1090（Soft state）Aluminium alloy plate ingot carries out 450 DEG C of low temperature Homogenization Treatments, keeps the temperature 8h；Then 410
~430 DEG C of progress low temperature open rollings, plate ingot take the distribution principle for waiting drafts to carry out when rolling, hot roll is using roughness
0.75~0.95 μm of working roll ensures that hot rolling is whole to prevent viscous aluminium, last three passages of hot rolling from can suitably reduce drafts
Roll the control of temperature；Cold rolling uses " 3+2 " technique, and 0.55~0.65 μm of high roughness texturing working roll is first used to carry out three
The semi-finished product of passage produce, and the low roughness work that roughness is 0.35~0.38 μm is then used to carry out the finished product of two passages
Rolling；Cold rolling finished product takes oily cleaning way cleaning surface aluminium powder.
Under above-mentioned granule surface contral technique, the final brightness for obtaining 1090 soft state products after anodic oxidation reaches 90% water
It is flat：
2 anodic oxidation aluminium alloy of embodiment（Hard state）The granule surface contral of product
First to general aluminium 1090（Hard state）Aluminium alloy plate ingot carries out 490 DEG C of low temperature Homogenization Treatments, keeps the temperature 8h；Then 440
~460 DEG C of progress low temperature open rollings, plate ingot take the distribution principle for waiting drafts to carry out when rolling, hot roll is using roughness
0.75~0.95 μm of working roll ensures that hot rolling is whole to prevent viscous aluminium, last three passages of hot rolling from can suitably reduce drafts
Roll the control of temperature；Cold rolling uses " 3+2 " technique, and 0.50~0.60 μm of high roughness texturing working roll is first used to carry out three
The semi-finished product of passage produce, and then carry out intermediate cleaning, intermediate annealing（320 DEG C of annealing temperature, soaking time 12h）, then with slightly
The low roughness work that rugosity is 0.30~0.35 μm carries out the finished product rolling of two passages；Last cold rolling finished product takes oily cleaning
Mode cleans surface aluminium powder.
Under this granule surface contral technique, and it is equipped with the plate ingot foundry engieering of same period invention so that product after anodic oxidation
Brightness reach 90% level, appearance uniformity also disclosure satisfy that the use demand of End-Customer, specific example are as follows：
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of granule surface contral technique of anodic oxidation aluminium alloy, steps are as follows：
（1）Aluminium alloy plate ingot first carries out Homogenization Treatments at 450~490 DEG C；
（2）Hot rolling：By the aluminium alloy plate ingot of Homogenization Treatments in 410~460 DEG C of open rollings, the roughness of hot roll is 0.75~
0.95μm；
（3）Cold rolling：First use roughness be 0.50~0.65 μm roll roll three passages, then with roughness be 0.30~0.38
μm roll roll two passages, cleaned after cold rolling；
The aluminium alloy plate ingot is 1090 aluminium alloys.
2. granule surface contral technique according to claim 1, it is characterised in that：Step（1）The time of Homogenization Treatments is 8
Hour.
3. granule surface contral technique according to claim 1, it is characterised in that：Step（2）Using etc. drafts distribution it is former
Then rolled.
4. granule surface contral technique according to claim 1, it is characterised in that：Step（3）Using etc. drafts distribution it is former
Then rolled.
5. granule surface contral technique according to claim 1, it is characterised in that：Step（3）It is cleaned using oil.
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