CN106694547B - A kind of hot rolling technology of the hard state aluminium alloy of anodic oxidation - Google Patents
A kind of hot rolling technology of the hard state aluminium alloy of anodic oxidation Download PDFInfo
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- CN106694547B CN106694547B CN201611198149.0A CN201611198149A CN106694547B CN 106694547 B CN106694547 B CN 106694547B CN 201611198149 A CN201611198149 A CN 201611198149A CN 106694547 B CN106694547 B CN 106694547B
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- 230000003647 oxidation Effects 0.000 title claims abstract description 36
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 36
- 238000005098 hot rolling Methods 0.000 title claims abstract description 27
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 238000000265 homogenisation Methods 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 230000009467 reduction Effects 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 3
- 238000002791 soaking Methods 0.000 claims abstract description 3
- 238000003801 milling Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 15
- 229910052782 aluminium Inorganic materials 0.000 description 15
- 238000005266 casting Methods 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- 238000005482 strain hardening Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000005097 cold rolling Methods 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 4
- 238000005034 decoration Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 206010054949 Metaplasia Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/06—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing in a non-continuous process, e.g. triplet mill, reversing mill
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The present invention discloses a kind of anodic oxidation hot rolling technology of hard state aluminium alloy, and steps are as follows: (1) hard state aluminium alloy plate ingot carries out homogenization heat preservation at 490 DEG C, and soaking time is 8 hours；(2) after homogenizing, take the distribution principle for waiting drafts in 440~460 DEG C of progress open rollings；(3) it when to be hot-rolled down to plate ingot temperature be 370~390 DEG C, first carry out the small pressure that reduction ratio is 7% and rolls, then carry out rolling under the superpressure that a reduction ratio is 45%；(4) after step (3) processing, the distribution principle for continuing drafts such as taking is rolled, by finishing temperature control at 250~270 DEG C.Using method of the invention, it can make the mach formed product ability of common single chassis hot rolling that the effect of multi-frame continuous hot-rolling mill be fully achieved, the invention practicability is extensive, and production and control difficulty and at low cost, product competitiveness in the market is obvious, remarkable in economical benefits.
Description
Technical field
The invention belongs to aluminium alloy manufacture fields, and in particular to a kind of hot rolling technology of the hard state aluminium alloy of anodic oxidation.
Background technique
1090 aluminium alloys of anodic oxidation, belonging to the current world, (aluminium purity does not surpass generally for >=99.90% with commercial-purity aluminium
It crosses 99.93%) as substrate, 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 the hard state product of anodic oxidation soft state (state containing medium-soft) product and anodic oxidation, 1090 soft states of Anodic Oxidation
(state containing medium-soft) product, with Mingguang City's type it is reflective with 1090 reflectors (country be also referred to as reflector) for representative, product with high brightness,
With the characteristics of high forming ability, indoor and outdoor and traffic are widely used according to field；And 1090 hard state products of anodic oxidation, then with
1090 mirror boards are that (1085 mirror boards used in Germany's peace aluminium are Ti contents beyond BSEN 573-3-2009 control model for representative
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) other than processing method, or even there are also CC(castings to roll) roll
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,
Its process flow requirement for finally having to pass through anodic oxidation and essentially identical product quality demand determine that anodic oxidation is used
The typical technology path of 1090 alloy products is as follows:
1), the hard 1090 aluminium alloy typical technology route of state of anodic oxidation
Hard 1090 aluminium alloy of state of anodic oxidation, 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 plate thickness material, plate intermediate heat-treatment, plate mirror finish, plate
Material straightening and trimming, plate cleaning and overlay film, plate anodic oxidation, wait ten key links.But for technical difficulty, mirror 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
→ → mirror surface rolling → → straightening trimming → → cleaning overlay film → → anodic oxidation → → finished product
2), the soft 1090 aluminium alloy typical technology route of state of anodic oxidation
Soft 1090 alloy product of state of anodic oxidation, because there are notable differences with hard state product for purposes usage, so
There is also a degree of difference on processing flow, and most typical processing flow mainly includes: 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 soft 1090 alloy product of state of anodic oxidation is such as
Under:
Casting → → plate ingot the sawing of plate ingot and milling face → → plate ingot homogenization → → hot rolling → → cold rolling → → clean → →
Plate → → punching press (or spinning) molding → → anodic oxidation → → finished product is opened in annealing → →.
1090 alloy products of anodic oxidation, it is high reflecting rate respectively that there are two very specific technical indicators for tool
It is anti-without influencing after (be known as brightness in the industry, while being characterized with mutually contradictory specular reflectivity and diffusing reflection rate) and anodic oxidation
The shading of optical uniformity.Influence the factor of reflecting rate, the oxidation after being concentrated mainly on plate ingot grain size, plate ingot aluminium purity, oxidation
Five aspects such as film uniformity and the control of the interface state of concentration, woollen surface uniformity and consistency and mirror finish；
And influence the principal element of shading defect, then when concentrating on surface and interface uniformity, woollen surface cleaning and mirror finish
Interface state control three aspects such as precision, and interface state when mirror finish controls precision, and concentrates 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 process 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 strict control plate ingot, thus
The weaker poor B grain refiner of grain refining effect can only be selected, so that client is upper to need to increase making for grain refiner again
Dosage guarantees plate ingot grain size number, leads to the increase of the content of Ti, aluminium purity is reduced again in turn, to need aluminium pure
Spending higher fine aluminum liquid, (1090 sub- aluminium alloys of Hong Kong U.S. of most significant end in the world, are exactly to use price to carry out the casting of plate ingot
Industrial rafifinal that very expensive aluminium purity is 99.95% casts 1090 aluminium alloy plate ingots, domestic then absolutely not develop
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, thus with it is low at
This commercial-purity aluminium (99.90%) carrys out cast sheet ingot, and reaches the external quality using industrial rafifinal (99.95%) cast sheet ingot
It is horizontal.
2) surface of hot-working and cold working and interface uniformity and spatter property control
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 with interface hereditary effect, based on this requirement is theoretically needed by arc length with method, is realized with hot-working
Uniform cross turns to target design hot rolling technology, realizes that surface conformance adds as technological design core, and by heat using cold working
The technological balance of work and cold working completes interface and Surface uniformization and consistency, and the sub- industry of external colleague such as U.S. is logical
The multi-frame continuous hot-rolling mill (the sub- industry of Malaysia's U.S. is " 1+3 " continuous hot-rolling mill) of hot procedure is crossed to realize this special work
Skill function.
3) high-elongation demand and plate 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, needs the use of strict control 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 core content of the design of technique and hot finish to gauge aging temp and cold rolling finished product annealing process and balance aspect.
4) control of high brightness and high brightness
For reflective with the hard state product of 1090 aluminium alloys, the high-end mirror surface decoration of main application is used, and final products are to surface
Brightness, lightness and uniformity controlling require it is very high；From plate ingot casting (component requirements) to hot-working (granule surface contral and inside
Organizational controls) arrive again the factors such as subsequent cold rolling, heat treatment, mirror surface rolling all can brightness to final products and lightness generate it is great
Influence, therefore to realize the requirement of high brightness and high brightness, the links in production require 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.
Summary of the invention
The purpose of the present invention is being improved to existing anodic oxidation with the hot rolling technology in the production of hard state aluminium alloy, with state
Interior common single chassis hot-rolling mill production meets the product of anodized demand, and guarantees that the forming ability of product reaches completely
To the formed product ability of multi-frame continuous hot-rolling mill.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of anodic oxidation hot rolling technology of hard state aluminium alloy, steps are as follows:
(1) hard state aluminium alloy plate ingot carries out homogenization heat preservation at 490 DEG C, and soaking time is 8 hours；
(2) after homogenizing, take the distribution principle for waiting drafts in 440~460 DEG C of progress open rollings；
(3) it when to be hot-rolled down to plate ingot temperature be 370~390 DEG C, first carry out the small pressure that reduction ratio is 7% and rolls, then
Rolled under the superpressure that reduction ratio is 45%；
(4) after step (3) processing, the distribution principle for continuing drafts such as taking is rolled, by finishing temperature control
System is at 250~270 DEG C.
Preferably, hot rolling is carried out using single machine heating milling train.
The method of the present invention is simple, and domestic common single chassis hot-rolling mill can meet process requirement, is suitable for big batch
Metaplasia produces, and production cost is inefficient high, and product can satisfy the anodized demand of various product, the forming ability of product
The formed product ability of multi-frame continuous hot-rolling mill is fully achieved, the invention practicability is extensive, production and control difficulty and at low cost,
Product competitiveness in the market is obvious, remarkable in economical benefits.
Specific embodiment
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.
The hot rolling of 1 anodic oxidation of embodiment aluminium alloy (hard state) product
Equipment of hot rolling is using domestic common single chassis hot-rolling mill.First to hard 1090 aluminium alloy plate ingot (purity 99.90%) of state
490 DEG C of low temperature homogenization are carried out, after keeping the temperature 8h, in 440~460 DEG C of progress low temperature open rollings, plate ingot is taken when rolling waits drafts
Distribution principle, in 17 passage, plate ingot temperature is down to 370~390 DEG C, carries out the small pressure that reduction ratio is 7% at this time
Under, the 18th passage followed by carries out under the superpressure that a reduction ratio is 45%；The distribution for then proceeding to drafts such as taking is former
It is then rolled, in the 21st, 22,23 3 road secondary control speed, hot-rolled finished product temperature is accurately controlled in 250~270 DEG C
In specific sections.Under this hot rolling technique, so that most afterwards through mirror surface rolling, the lightness of product after anodic oxidation and bright
Degree reaches >=90% level, and specific performance comparison is as follows:
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it 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
To modify the technical solutions described in the foregoing embodiments 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 of the invention
Within protection scope.
Claims (2)
1. a kind of anodic oxidation hot rolling technology of hard 1090 aluminium alloy of state, steps are as follows:
(1) hard state aluminium alloy plate ingot carries out homogenization heat preservation at 490 DEG C, and soaking time is 8 hours；
(2) after homogenizing, take the distribution principle for waiting drafts in 440~460 DEG C of progress open rollings；
(3) it when to be hot-rolled down to plate ingot temperature be 370~390 DEG C, first carry out the small pressure that reduction ratio is 7% and rolls, then carry out
It is rolled under the superpressure that reduction ratio is 45%；
(4) after step (3) processing, the distribution principle for continuing drafts such as taking is rolled, and finishing temperature control is existed
250~270 DEG C.
2. hot rolling technology according to claim 1, it is characterised in that: carry out hot rolling using single machine heating milling train.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611198149.0A CN106694547B (en) | 2016-12-22 | 2016-12-22 | A kind of hot rolling technology of the hard state aluminium alloy of anodic oxidation |
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| CN201611198149.0A CN106694547B (en) | 2016-12-22 | 2016-12-22 | A kind of hot rolling technology of the hard state aluminium alloy of anodic oxidation |
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| DE102004022817A1 (en) * | 2004-05-08 | 2005-12-01 | Erbslöh Ag | Decorative anodizable, easily deformable, mechanically highly loadable aluminum alloy, process for its production and aluminum product made from this alloy |
| JP5640399B2 (en) * | 2010-03-03 | 2014-12-17 | 日本軽金属株式会社 | Aluminum alloy plate with anodized film and method for producing the same |
| EP2653577B2 (en) * | 2012-04-20 | 2023-02-15 | UACJ Corporation | Method for producing an aluminum alloy sheet that exhibits excellent surface quality after anodizing |
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