CN106854709A - A kind of anodic oxidation casting processing technology of 1090 aluminium alloys - Google Patents

A kind of anodic oxidation casting processing technology of 1090 aluminium alloys Download PDF

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Publication number
CN106854709A
CN106854709A CN201611198745.9A CN201611198745A CN106854709A CN 106854709 A CN106854709 A CN 106854709A CN 201611198745 A CN201611198745 A CN 201611198745A CN 106854709 A CN106854709 A CN 106854709A
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casting
aluminium
refining
temperature
anodic oxidation
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李世博
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Xinjiang Joinworld Co Ltd
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Xinjiang Joinworld Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)

Abstract

The present invention discloses a kind of casting processing technology of 1090 aluminium alloys of anodic oxidation, and step is as follows：The electrolytic aluminium liquid that aluminium purity is 99.90~99.92% is put into smelting furnace, adds 1090 aluminium alloy cold burdens of the mass ratio no less than 20%, smelting temperature to control at 710~735 DEG C；Refined after the completion of melting, refining temperature is controlled at 700~725 DEG C, refining is completed within 45min, refining agent is carbon trichloride；After the completion of refining, enter the casting of andante ingot, grain refiner is added before stirring degassing case by the way of mariages feeding during casting, temperature-compensating is carried out in chute end, it is ensured that casting temperature stabilization is at 690~700 DEG C.It is the 1090 alloy sheets ingots for meeting the standards of BSEN 573 3 2009 of one-level that the present invention produces ejecting plate ingot grain size with the commercial-purity aluminium of low cost, for the 1090 aluminium alloy plate ingots that low cost development goes out forming ability high and high brightness provide basis.

Description

A kind of anodic oxidation casting processing technology of 1090 aluminium alloys
Technical field
The invention belongs to aluminium alloy manufacture field, and in particular to a kind of anodic oxidation processes work with the casting of 1090 aluminium alloys Skill.
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 typically Cross 99.93%）It is base material, is widely used in the alloy product of the highest ranking in illumination and decoration field, by its use state, and It is divided into the soft state of anodic oxidation（State containing medium-soft）With hard state product, its Anodic Oxidation is with 1090 soft states for product and anodic oxidation （State containing medium-soft）Product, 1090 reflectors are used so that Mingguang City's type is reflective（The country is also referred to as reflection shield）Be represent, product with high brightness, With the characteristics of forming ability high, it is widely used in indoor and outdoor and field is shone in traffic；And anodic oxidation is with 1090 hard state products, then with 1090 mirror boards are representative（1085 mirror boards that Germany's peace aluminium is used, are that Ti contents control model beyond BSEN 573-3-2009 Product after enclosing, its mother metal aluminium purity ＞ 99.90%, so the category of 1090 aluminium alloys is included 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.It is domestic at present to hand over The alloy product in logical illumination and decoration field, concentrates on the grade aluminium alloys such as 1070 and 1050,1060 of low and middle-end, and reflecting rate exists 60~70%, the processing method of such product, except DC（Hot rolling）Outside processing mode, or even also CC（Casting is rolled）Roll The method production of system, the disorderly competition of the missing and domestic market of this core technology not only result in domestic enterprise's exploitation The investment risk of 1090 high-end anodic oxidation materials is raised, while also causing China to develop the paces of anodic oxidation product high-endization Stagnation.
The anodic oxidation specific processing technology of 1090 aluminium alloys, is slightly different with the difference of its product purpose, but, Its technological process 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 anodic oxidation aluminium alloy typical technology route of hard state 1090
The anodic oxidation aluminium alloy of hard state 1090, its main work flow is needed by the casting of plate ingot, the sawing of plate ingot and milling face, plate Ingot is homogenized and hot-working, the cold working of plate ingot, the cleaning of sheet material thick material, sheet material intermediate heat-treatment, sheet material mirror finish, sheet material straightening With trimming, sheet material cleaning and overlay film, sheet material anodic oxidation, ten key links are waited.But for technical difficulty, before mirror finish 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, be the core technology institute of whole industry , also, this four processes also has the internal relation of mutual check and balance, specifically, the hard state of anodic oxidation The typical technology route of 1090 products 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）, the anodic oxidation aluminium alloy typical technology route of soft state 1090
The anodic oxidation alloy product of soft state 1090, because there is notable difference with hard state product in purposes usage, so in processing A certain degree of difference is there is also in flow, most typical work flow is mainly included：The casting of plate ingot, the sawing of plate ingot and milling face, Plate ingot is homogenized opens plate, plate stamping shaping, anodic oxygen with hot-working, the cold working of plate ingot, coiled material cleaning, coil annealing, coiled material The nine big links such as change, the technological core of whole industry still concentrates on the casting of plate ingot, plate ingot homogenization and hot-working, plate ingot table Several core links such as face treatment, specifically, anodic oxidation is as follows with the typical technology route of the alloy product of soft state 1090：
Casting → → plate ingot the sawing of plate ingot and milling face → → plate ingot homogenization → → hot rolling → → cold rolling → → cleaning → → annealing → → open plate → → punching press（Or spinning）Shaping → → anodic oxidation → → finished product.
1090 alloy products of anodic oxidation, are respectively reflecting rates high with two very clear and definite technical indicators （It is referred to as brightness in the industry, while being characterized with mutually contradictory specular reflectivity and diffusing reflection rate）It is anti-without influence with after anodic oxidation The shading of optical uniformity.The factor of reflecting rate is influenceed, the oxidation after plate ingot grain size, plate ingot aluminium purity, oxidation is concentrated mainly on Five aspects such as the interface state control of film uniformity and dense degree, woollen surface uniformity and uniformity and mirror finish； 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 during mirror finish concentrates on absolute draft again Amount control, plate form control and lubricating status control, these three influence each other and mutually in the technical indicator of balance.
Based on exemplary process flow by anodic oxidation with 1090 products, the principal element of product quality is influenceed Following aspects：
1）Plate ingot casts
1090 aluminium alloys belong to commercial-purity aluminium series of products, it is necessary to solve the aluminium purity control for mutually liquidating simultaneously when plate ingot casts System controls two key problems with grain size.Aluminium Pureness control is exactly that casting process cleans control, to prevent other as far as possible Constituent element is introduced as principle and carries out process cleans control, and plate ingot grain size is controlled, and must reach the water product of one-level, and objective Need substantial amounts of grain refiner to participate in plate ingot in sight to cast, and, product finally needs to carry out the product manufacturing of anodic oxidation Feature, causes grain refiner while grain size control is participated in again, the B element in strict control panel ingot, so that can only The weaker poor B grain refiners of selection grain refining effect, so as to client is upper to need to increase the usage amount of grain refiner again To ensure plate ingot grain size number, cause the increase of the content of Ti, aluminium purity is reduced again in turn, so as to need aluminium purity more Fine aluminum liquid high come enter andante ingot casting（1090 U.S. sub- aluminium alloys of Hong Kong of most significant end in the world, be exactly using price very Expensive aluminium purity is that 99.95% industrial rafifinal casts 1090 aluminium alloy plate ingots, domestic then do not develop completely on an equal basis The plate ingot of quality level）, sum it up, core technology of this product in terms of casting, is how to the greatest extent may be used using aluminium purity The low aluminium liquid of energy, by technology controlling and process and balance, obtains the 1090 aluminium alloy plate ingots that grain size is one-level, so as to low cost Commercial-purity aluminium（99.90%）Carry out cast sheet ingot, and reach foreign countries to use industrial rafifinal（99.95%）The quality water of cast sheet ingot It is flat.
2）Hot-working and cold worked surface control with interface uniformity and spatter property
1090 alloy product anodic oxidation purposes surfaces and the realization of interface particular/special requirement, are by hot-working work and cold working Realize that this requirement is needed by arc length with based on method in theory, and interface is realized with hot-working with interface hereditary effect in surface Uniformly turn to target design hot rolling technology, surface conformance as technological design core realized with cold working, and by hot-working with Cold worked technological balance, completes interface and Surface uniformization and uniformity, and the such as U.S. Asia industry of external colleague by heat The multi-frame continuous hot-rolling mill of manufacturing procedure（Malaysian U.S. Asia industry is " 1+3 " continuous hot-rolling mill）To realize this special process work( Energy.
3）High-elongation demand and sheet material organizational controls（Heat treatment）
The interface uniformity of rafifinal system product derives from structural homogenity, but pure lines product high in casting because of aluminium purity very Height, need to strictly control the use of grain refiner during casting, the structural homogenity of high pure lines product is most rambunctious.Anodic oxygen Change with the organizational controls core of 1090 alloy products, concentrate on plate ingot grain size control, hot worked tissue reformation and timeliness, Cold worked Interface Control and finished product recrystallization annealing aspect, and this completes hot worked plate ingot homogenizing annealing process and Core content in terms of the design of hot finish to gauge aging temp and cold rolling finished product annealing process and balance.
4）The control of high brightness and high brightness
For reflective with the hard state product of 1090 aluminium alloys, the high-end minute surface decoration of its main application is used, and final products are to the bright of surface The requirement of degree, lightness and uniformity controlling is very high；From the casting of plate ingot（Component requirements）To hot-working（Granule surface contral and interior tissue Control）Arrive the factors such as follow-up cold rolling, heat treatment, minute surface rolling again all can produce great shadow to the brightness of final products and lightness Ring, therefore to realize the requirement of high brightness and high brightness, the links in production are required for strict control, from raw material plate ingot Composition Control, control, hot rolling technique, cold rolling, annealing etc. to milling face amount must be held in strict accordance with regulation OK.
The content of the invention
The purpose of the present invention is that the casting processing technology in being produced with 1090 aluminium alloys to existing anodic oxidation is improved, The equipment based on domestic conventional water-cooled caster, using the commercial-purity aluminium aluminium liquid that aluminium purity is 99.90~99.92%, adopts Middle temperature casting, the method for mariages addition are taken, aluminium purity >=99.90%, and plate ingot grain size meeting for one-level has been finally given 1090 alloy sheets ingots of BSEN 573-3-2009 standards, while composition meets Europe superscript requirement, be low cost development go out it is high into 1090 aluminium alloy plate ingots of type ability and high brightness provide basis.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
A kind of anodic oxidation casting processing technology of 1090 aluminium alloys, step is as follows：
（1）The electrolytic aluminium liquid that aluminium purity is 99.90~99.92% is put into smelting furnace, 1090 of mass ratio no less than 20% are added Aluminium alloy cold burden, smelting temperature is controlled at 710~735 DEG C；
（2）Refined after the completion of melting, refining temperature is controlled at 700~725 DEG C, refining, refining agent are completed within 45min It is carbon trichloride；
（3）After the completion of refining, enter the casting of andante ingot, crystal grain is added before stirring degassing case by the way of mariages feeding during casting Fining agent, temperature-compensating is carried out in chute end, it is ensured that casting temperature stabilization is at 690~700 DEG C.
Preferably, step（2）The consumption of the carbon trichloride is the 0.2~0.5% of quality of furnace charge.
Preferably, step（3）Casting speed control in 50mm/min.
Preferably, step（3）Described in grain refiner be Ai-Ti-B0.5Grain refiner or Ai-Ti-C0.15Crystal grain is thin Agent, consumption is 150~250ppm of quality of furnace charge.
The present invention with current domestic water-cooled caster the most common be main equipment, using aluminium purity be 99.90~ 99.92% technique fine aluminium aluminium liquid, has finally given aluminium purity >=99.90%, and plate ingot grain size and has met BSEN for one-level 1090 alloy sheets ingots of 573-3-2009 standards, are that low cost development goes out shaping energy high while composition meets Europe superscript requirement 1090 aluminium alloy plate ingots of power and high brightness provide basis.
" cold burden " of the present invention refers to that 1090 aluminium alloys under normal temperature are returned with product, specifically may include 1090 aluminium alloys The plate head of ingot, 1090 aluminum alloy strips crop material etc. end to end, the addition of " cold burden " can promote shape casting process to form uniform crystallization Body, can effectively realize the control of the grain size of 1090 aluminium alloy plate ingots of casting.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with reality of the invention Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is 1090 soft state aluminium alloy plate ingot grain size testing results of the casting of embodiment 1.
Fig. 2 is 1090 hard state aluminium alloy plate ingot grain size testing results of the casting of embodiment 2.
Specific embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that preferred reality described herein Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
The anodic oxidation of embodiment 1 is processed with the casting of 1090 soft state aluminium alloys
Equipment requirement：Domestic most common water-cooled caster；Grain refiner uses commercially available Ai-Ti-B0.5Crystal grain is thin Agent.
The technical pure aluminium liquid that aluminium purity after once electrolytic is 99.90~99.92% is put into smelting furnace, while adding ratio 1090 aluminium alloy cold burdens of the example no less than 20wt%（No more than 30wt%）, smelting temperature control is at 730~735 DEG C；Melting After the completion of refined, refining temperature is controlled at 720~725 DEG C, and refining speed is fast, and is limited within 45min and completed, essence Refining agent is carbon trichloride（C2Cl6）, consumption control is the 0.30~0.50% of furnace charge gross mass；After the completion of refining, plate is proceeded by Ingot is cast, and mariages is taken during casting（Grain refiner Al-Ti-B0.5）The mode of feeding, carries out slowly adding before stirring degassing case Enter（In 0.035~0.040m/s, consumption is 200~250ppm of furnace charge gross mass for adding speed control）；Take rigorous slipping Groove heat preserving mode, carries out flame and heats and adjust flame size in chute end, it is final ensure casting temperature stabilization 690~ 700 DEG C, andante ingot sawing is entered in casting speed control after the completion of 50mm/min, casting, as shown in figure 1, testing result shows crystalline substance Granularity reaches one-level, to meet 1090 alloy sheets ingots of BSEN 573-3-2009 standards.
The anodic oxidation of embodiment 2 is processed with the casting of 1090 hard state aluminium alloys
Equipment requirement：Domestic most common water-cooled caster；Grain refiner uses commercially available Ai-Ti-C0.15Crystal grain Fining agent.
The technical pure aluminium liquid that aluminium purity after once electrolytic is 99.90~99.92% is put into smelting furnace, while adding ratio 1090 aluminium alloy cold burdens of the example no less than 20wt%（No more than 30wt%）, smelting temperature control is at 710~725 DEG C；Melting After the completion of refined, refining temperature is controlled at 700~710 DEG C, and refining speed is fast, and is limited within 45min and completed, essence Refining agent is carbon trichloride（C2Cl6）, consumption control is the 0.20~0.40% of furnace charge gross mass；After the completion of refining, plate is proceeded by Ingot is cast, and mariages is taken during casting（Grain refiner Al-Ti-C0.15）The mode of feeding, is carried out slow before stirring degassing case Add（In 0.030~0.035m/s, consumption is 150~200ppm of furnace charge gross mass for adding speed control）；Take rigorous Chute heat preserving mode, carries out flame and heats and adjust flame size in chute end, it is final ensure casting temperature stabilization 690~ 700 DEG C, andante ingot sawing is entered in casting speed control after the completion of 50mm/min, casting, as shown in Fig. 2 testing result shows crystalline substance Granularity reaches one-level, and surface uniformity consistency is good, and shading phenomenon is also eliminated significantly in follow-up process, to meet 1090 alloy sheets ingots of BSEN 573-3-2009 standards.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it still may be used Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic. All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention Within protection domain.

Claims (4)

1. a kind of anodic oxidation casting processing technology of 1090 aluminium alloys, step is as follows：
（1）The electrolytic aluminium liquid that aluminium purity is 99.90~99.92% is put into smelting furnace, 1090 of mass ratio no less than 20% are added Aluminium alloy cold burden, smelting temperature is controlled at 710~735 DEG C；
（2）Refined after the completion of melting, refining temperature is controlled at 700~725 DEG C, refining, refining agent are completed within 45min It is carbon trichloride；
（3）After the completion of refining, enter the casting of andante ingot, crystal grain is added before stirring degassing case by the way of mariages feeding during casting Fining agent, temperature-compensating is carried out in chute end, it is ensured that casting temperature stabilization is at 690~700 DEG C.
2. casting processing technology according to claim 1, it is characterised in that：Step（2）The consumption of the carbon trichloride is The 0.2~0.5% of quality of furnace charge.
3. casting processing technology according to claim 1, it is characterised in that：Step（3）Casting speed control in 50mm/ min。
4. casting processing technology according to claim 1, it is characterised in that：Step（3）Described in grain refiner be Ai- Ti-B0.5Grain refiner or Ai-Ti-C0.15Grain refiner, consumption is 150~250ppm of quality of furnace charge.
CN201611198745.9A 2016-12-22 2016-12-22 A kind of anodic oxidation casting processing technology of 1090 aluminium alloys Pending CN106854709A (en)

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Cited By (2)

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CN110564982A (en) * 2019-09-10 2019-12-13 新疆众和股份有限公司 Casting process of 1090 aluminum alloy plate ingot for cathode foil
CN111286635A (en) * 2020-03-13 2020-06-16 西南铝业（集团）有限责任公司 Preparation method of aluminum alloy

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CN110564982A (en) * 2019-09-10 2019-12-13 新疆众和股份有限公司 Casting process of 1090 aluminum alloy plate ingot for cathode foil
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CN111286635A (en) * 2020-03-13 2020-06-16 西南铝业（集团）有限责任公司 Preparation method of aluminum alloy
CN111286635B (en) * 2020-03-13 2021-09-24 西南铝业（集团）有限责任公司 Preparation method of aluminum alloy

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Application publication date: 20170616