CN106381409A - Technology of adding alloy refiner in aluminum and aluminum alloy manufacturing process - Google Patents
Technology of adding alloy refiner in aluminum and aluminum alloy manufacturing process Download PDFInfo
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- CN106381409A CN106381409A CN201610974373.8A CN201610974373A CN106381409A CN 106381409 A CN106381409 A CN 106381409A CN 201610974373 A CN201610974373 A CN 201610974373A CN 106381409 A CN106381409 A CN 106381409A
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- alloy
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- refinement
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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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a new technology of adding an alloy refiner in the aluminum and aluminum alloy manufacturing process. In particular, the alloy refiner is firstly weighed according to a certain refining proportion; then the alloy refiner is melted to be in the liquid state; and finally the liquid-state alloy refiner is added into an aluminum alloy melt to be refined. The new alloy refiner technology in a liquid-liquid reaction manner is provided in the aluminum and aluminum alloy manufacturing process; and by means of the method, the refining reaction time can be shortened, the refining treatment homogeneity is improved, and the refining effect is improved.
Description
Technical field
Metallurgical technology field of the present invention is and in particular to add the work of alloy refinement agent in a kind of aluminum and its alloy making process
Skill.
Background technology
In recent years, aluminum and its alloy are due to having high specific strength, high-termal conductivity, high conductivity, good corrosion resistance, wear-resistant
The features such as damage property and excellent casting, cutting, processing forming, in mechanical industry, auto industry, aviation and military affairs
The high-tech areas such as industry are widely used.However, the easy generation in process of setting of aluminum and its alloy molten solution is thick
Column crystal and Feather-like Crystal tissue, cause mechanical property, such as the decline of processing characteristics, yield strength and elongation percentage etc., meanwhile,
Aluminum product surface is also easily made to produce defect.Therefore, in the actual production of aluminum and its alloy product, it usually needs take various arranging
Apply and solidification and crystallization tissue is refined, obtain more tiny and equally distributed equiaxed grain structure, improve its mechanical property.
The method of crystal grain refinement is a lot, such as deformation refinement, physical field refinement, method for quick cooling refinement, mechanical-physical refinement,
Fining agent refinement etc., wherein, has easy to operate, thinning effect using the method that fining agent carries out micronization processes to crystal grain
Well, work fast and adaptable advantage, therefore, add various fining agents in aluminum and its alloy melt（As Al-Ti-
B, Al-Ti, Al-Ti-C, Al-Ti-B-RE etc.）Carry out structure refinement process have become as the widest in current aluminium alloy commercial Application
A kind of general and practical thinning method.
At present, in aluminum i ndustry produce reality, the addition manner of fining agent mainly has two kinds, and one is to be released with wire feeder
In groove, the silk such as Al-Ti-B intermediate alloy/wire rod is pressed certain speed and add aluminum melt；Two is handle by the way of direct input
The waffle ingot such as Al-Ti intermediate alloy adds in the stove of dress aluminum melt.Both addition manners correspond to different aluminum alloys product respectively
Preparation, and through application for a long time and update, technically highly developed.But both modes have
A common ground, that is, be the refinement reaction between solid-liquid, this solid-liquid reaction is due to first relating to melting of solid phase
Change, followed by the carrying out of correlated response, thus extend the time required for refinement to a certain extent, especially releasing
When groove adds fining agent, the refinement time is short, and thinning effect not necessarily reaches most preferably.In view of the above, the present invention considers whether
Can be in the way of using the refinement of liquid liquid, i.e. become liquid with aluminum melt, refining effect to occur again from solid state transformation fining agent, with
Shorten the refinement time, improve thinning effect.
Content of the invention
The technical problem to be solved is to provide a kind of reactive liquid solution side in aluminum and its alloy making process
The fining agent of formula adds new technology, and the method can shorten the time of refinement reaction, increases the uniformity of micronization processes, improves thin
Change effect.
To achieve these goals, the technical solution adopted in the present invention is：
（1）Weigh alloy refinement agent：The addition manner of alloy refinement agent at present has two kinds, is to add in aluminum alloy smelting furnace respectively
Add with chute, according to the difference of addition manner, for the weight of fining agent, to weigh be also different.1. need in stove
Carry out the aluminium alloy melt of micronization processes, current industrial production typically adopts bulk form, such as Al-Ti ingot etc., then according in stove
The adding proportion of the gross weight of aluminium alloy melt and fining agent is calculated the alloy refinement agent weight needing fusing.On the one hand examine
Consider topple over time of fining agent liquation in intermediate frequency furnace in this case can be long, topple over must compare clean, another
From the aspect of high and the time that refines is longer to in-furnace temperature, have a certain degree of scaling loss, therefore, in practical operation, fining agent
Gross weight somewhat need to float little by little on the basis of this Theoretical Calculation weight（2%～5%）；2. need to carry out in chute
The aluminium alloy melt of micronization processes, current industrial production typically adopts silk/line form, such as Al-Ti-B silk etc. it is contemplated that in chute
The flowing velocity of aluminum melt is very fast, topples over flow velocity during fining agent in intermediate frequency furnace and flow is difficult to grasp, therefore, this feelings
Should not adopt under condition and topple over mode operation, and be changed to the mode that Medium frequency induction furnace bottom releases, i.e. with pure titanium tube as permeable medium,
Additional Titanium board is made Valve controlling fining agent melt and is uniformly injected in chute from intermediate frequency furnace bottom, reaches the effect of moment refinement
Really, because refinement scaling loss is little in this technical process, negligible, therefore, in practical operation, the gross weight of fining agent can be pressed
According to reason weigh by calculated weight.
（2）Fusing fining agent：In view of the problem of scaling loss, fusion temperature is unsuitable too high, thus by the alloy refinement weighing
Agent（Al-Ti-B, Al-Ti, Al-Ti-C, Al-Ti-B-RE etc.）It is heated to 700 in the medium-frequency induction furnace of certain size size
～750 DEG C, and being incubated and terminating to whole refinement step；
（3）Add fining agent liquation：For preparing different alloy products, corresponding fining agent to be adopted, and corresponding
Fining agent melt is toppled in refinement position.1. need to carry out the aluminium alloy melt of micronization processes in stove, then by the refinement calculating
Agent melt is directly poured in aluminum melt in stove by certain speed, and the stirring action along with some strength.2. need in chute
In carry out the aluminium alloy melt of micronization processes, then the flow velocity according to aluminum melt in chute and flow, corresponding using titanium plate valve
Adjust intermediate frequency furnace ins and outs agent melt releases speed.Meanwhile, in order that in chute the refinement of aluminum melt more uniform, carefully
Agent melt is not secured to a position and is added, but is moving back and forth on the horizontal line of chute, so flows
The region that in groove, aluminum melt is accepted to refine is exactly " Z " font of a circulation.
In basis, alloy refinement agent is Al-Ti-B, Al-Ti, Al-Ti-C, Al-Ti-B-RE etc..
The temperature of the heating fusing of alloy refinement agent in the present invention is preferably 720～750 DEG C.
Beneficial effect of the present invention：
1st, shorten the refinement time.Because alloy refinement agent is melted in advance, therefore, reacting with aluminium alloy is liquid liquid
Reaction, refinement speed significantly improves, and the refinement time significantly shortens.
2nd, thinning effect improves.Stove due to melting fining agent employs medium-frequency induction furnace, the electromagnetic agitation in stove
Effect makes mutually to close the second phase of refining effect in fining agent, such as Al3Ti、TiB2Equal distribution is more uniform, effectively prevent poly-
Collection phenomenon occurs, thus thinning effect is improved.
3rd, refinement uniformity improves.In thinning process, fining agent is liquid, and it can evenly flow to aluminum to be refined
Each corner of alloy melt, the thinning process especially in chute, due to chute limited length, solid-state fining agent adds aluminum
Need the fusing of certain time after melt, then spread out into again and play refinement reaction everywhere, thus have impact on refinement to a certain extent
Uniformity.And the liquid fining agent of the present invention is exactly that liquid just can flow to each area quickly from being initially added into aluminum melt
Domain, and additionally use " Z " font when adding, further increase the uniformity of refinement.
4th, stablize aluminum melt temperature.Because fining agent melt natively has very high temperature, add aluminum melt to be refined
Afterwards, the decline of aluminum melt temperature can't be caused, this becomes apparent from for the effect adding fining agent at the place of releasing, Ke Yi
Improve casting or rolling temperature to a certain extent, improve product quality.
Brief description
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is aluminium alloy melt figure in chute during 6063 aluminium alloy preparation.
Fig. 2 is Al-5Ti-1B Master alloy refiners liquation figure.
Fig. 3 is the macro morphology figure of 6063 rodss and bars of aluminium alloy.
Fig. 4 is the metallograph of 6063 rodss and bars of aluminium alloy.
Specific embodiment
With reference to embodiments the specific embodiment of the present invention is described in further detail.
Embodiment
The present embodiment is to add the new of Al-5Ti-1B Master alloy refiners liquation in 10 ton of 6063 aluminium alloy manufacture process
Technique, comprises the following steps that：
（1）Weigh fining agent：Theoretical Calculation is carried out with 0.2% fining agent addition, in the production process of 10 ton of 6063 aluminium alloy
In need Al-5Ti-1B intermediate alloy 20kg；
（2）Fusing fining agent：The Al-5Ti-1B weighing Master alloy refiners are added in the medium-frequency induction furnace of capacity 30kg
Heat is to 750 DEG C, and is incubated；
（3）Add fining agent liquation：After 6063 aluminium alloys after completing element in smelting furnace and adding, start to release behaviour in 800 DEG C
Make.When flowing through, Deng 6063 aluminum melts, the intermediate frequency furnace filling fining agent liquid, open titanium plate valve, fining agent liquid just flows into stream
In 6063 aluminum melts in groove.Meanwhile, start the movable pulley on intermediate frequency furnace, allow it on the horizontal line of chute
Return is dynamic, completes to add the operation of fining agent liquid with the path of " Z " font；
（4）Casting：6063 melts after refinement complete casting rod operation by casting machine after filtering, removing the gred.
The figure that Fig. 1 flows in chute for aluminum melt during the present embodiment preparation 6063 aluminium alloys.After Fig. 2 is fusing
Al-5Ti-1B intermediate alloy melt, due to the function composite by electromagnetic stirring of intermediate frequency furnace, melt assumes rolling shape.Fig. 3 is preparation
The macro morphology of 6063 alloy aluminium bars.It can be seen from figure 3 that alloy aluminium bar smooth surface, the defect such as impulse- free robustness, foaming, crackle, casting
Good quality.Fig. 4 is the metallograph after 6063 alloy aluminium bar corrosion, and as seen from Figure 4, α-Al crystallite dimension is tiny, point four sides
To using division lines method statistical measurement, mean diameter is only 50.2 μm, shows good thinning effect.
Claims (3)
1. add the technique of alloy refinement agent it is characterised in that being first according to certain in a kind of aluminum and its alloy making process
Refinement ratio weighs alloy refinement agent, is then fused into liquid, finally liquid alloy fining agent is added aluminum to be refined
In alloy melt, comprise the following steps that：
（1）Weigh fining agent：
1. need to carry out the aluminium alloy melt of micronization processes in stove, then the gross weight according to aluminium alloy melt in stove and fining agent
Adding proportion be calculated the alloy refinement agent weight needing fusing, the gross weight weighing alloy refinement agent need to be theoretical at this
Floating 2%～5% on the basis of calculated weight；
2. need to carry out the aluminium alloy melt of micronization processes in chute, the gross weight of alloy refinement agent is according to Theoretical Calculation weight
Weigh；
（2）Fusing fining agent：The alloy refinement weighing agent is heated in the medium-frequency induction furnace of certain size size 700～
750 DEG C, and being incubated and terminating to whole refinement step；
（3）Add fining agent liquation：
1. need to carry out the aluminium alloy melt of micronization processes in stove, then will be direct by certain speed for the fining agent calculating melt
Pour in aluminum melt in stove, and the stirring action along with some strength；
2. need to carry out the aluminium alloy melt of micronization processes in chute, then the flow velocity according to aluminum melt in chute and flow, profit
Release speed with what titanium plate valve adjusted intermediate frequency furnace ins and outs agent melt accordingly；Meanwhile, fining agent presses " Z " vee path V
It is added.
2. the technique adding alloy refinement agent in a kind of aluminum according to claim 1 and its alloy making process, its feature
It is that alloy refinement agent is Al-Ti-B, Al-Ti, Al-Ti-C, Al-Ti-B-RE.
3. the technique adding alloy refinement agent in a kind of aluminum according to claim 1 and its alloy making process, its feature
It is that the temperature of alloy refinement agent heating fusing is 720～750 DEG C.
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| CN201610974373.8A CN106381409B (en) | 2016-11-07 | 2016-11-07 | A kind of technique that alloy refinement agent is added in aluminium alloy manufacturing process |
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| CN201610974373.8A CN106381409B (en) | 2016-11-07 | 2016-11-07 | A kind of technique that alloy refinement agent is added in aluminium alloy manufacturing process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157956A (en) * | 2018-02-15 | 2019-08-23 | 昭和电工株式会社 | The manufacturing method of Al alloy founding materials |
| CN110923497A (en) * | 2019-10-29 | 2020-03-27 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN112551257A (en) * | 2020-10-27 | 2021-03-26 | 佛山市三水凤铝铝业有限公司 | Titanium wire conveying device |
| CN115418512A (en) * | 2022-08-05 | 2022-12-02 | 郑州大学 | Method for synergistically enhancing and refining aluminum alloy grains by trace scandium and Al-Ti-B |
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| KR20050003827A (en) * | 2003-07-04 | 2005-01-12 | 주식회사 Slm | Additive for miniaturing crystallization of aluminium-silicon alloy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157956A (en) * | 2018-02-15 | 2019-08-23 | 昭和电工株式会社 | The manufacturing method of Al alloy founding materials |
| CN110923497A (en) * | 2019-10-29 | 2020-03-27 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN110923497B (en) * | 2019-10-29 | 2021-03-16 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN112551257A (en) * | 2020-10-27 | 2021-03-26 | 佛山市三水凤铝铝业有限公司 | Titanium wire conveying device |
| CN115418512A (en) * | 2022-08-05 | 2022-12-02 | 郑州大学 | Method for synergistically enhancing and refining aluminum alloy grains by trace scandium and Al-Ti-B |
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| CN106381409B (en) | 2017-11-24 |
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