CN103952602B - A kind of aluminium titanium boron production technology - Google Patents
A kind of aluminium titanium boron production technology Download PDFInfo
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- CN103952602B CN103952602B CN201410180911.7A CN201410180911A CN103952602B CN 103952602 B CN103952602 B CN 103952602B CN 201410180911 A CN201410180911 A CN 201410180911A CN 103952602 B CN103952602 B CN 103952602B
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Abstract
The invention discloses a kind of aluminium titanium boron production technology, and raw material first is entered into reduction Tai Baonei and carries out reduction reaction, and needs to be stirred using agitator in reduction reaction;Reaction to be restored is transferred in frequency conversion furnace after having carried out and carries out alloying operation;Final alloy aluminium water enters casting and rolling process by crucible, aluminium titanium boron finished product is obtained, the crucible is using the crucible for going out aluminium water under using, the coreless induction furnace that the frequency conversion furnace uses, and the electromagnetic stirring force in burner hearth is directly proportional to the specific power density of electric furnace, is inversely proportional with the square root of working frequency.The present invention separates reduction reaction and alloy operation, avoids causing high temperature change uncontrollable due to producing substantial amounts of heat in reduction reaction, while reduces the holding time of crucible, improves production capacity;Crucible is gone out into aluminium water and is changed to down method, the precipitation of titanium elements is prevented using electromagnetic agitation caused by frequency conversion furnace, without newly increasing holding furnace and magnetic stirrer, reduces the input of equipment.
Description
Technical field
The invention belongs to technical field of metallurgical production, is related to a kind of Aluminum alloy production method, more particularly, to a kind of aluminium titanium
Boron production technology.
Background technology
Al-Ti-B alloy is aluminium and the most frequently used grain refiner of aluminium alloy, is added to thin to base material in aluminium and aluminium alloy
Change, applied in global aluminum casting industry and its extensively.Years of researches are found:Main refining effect is played in aluminium titanium boron wire
Material is TiB2 and TiAl3, and point of Ti, B content in the alloy and TiB2 and TiAl3 this two-phase in Al-Ti-B alloy
Cloth, pattern and size, there is direct influence to acting on the grain refining capability of Al-Ti-B alloy of grain refiner.Institute
How to ensure the accuracy of composition in the production process of aluminium titanium boron, control this two-phase of TiB2 and TiAl3 in Al-Ti-B alloy
In distribution, pattern and size just seem significant, while whether can guarantee that aluminium titanium boron wire composition in process of production,
The uniformity of the two phases also determines the quality height of Al-Ti-B alloy silk.
At present, domestic villiaumite method is to prepare one of the most frequently used and most stable of production technology in Al-Ti-B alloy, and is somebody's turn to do
Reaction temperature, reaction time, time of repose, cast temperature in technique etc. are the main technologic parameters of aluminium titanium boron wire production, only
There is correct technological parameter and the aluminium titanium boron wire that can just produce high-quality is accurately controlled to technique.It is as shown in figure 1, existing
Some aluminium titanium boron production technologies are:Raw material is carried out into reduction reaction and alloy reaction into main frequency furnace simultaneously after, it is transferred to equipped with electricity
In the holding furnace of magnetic stirrer, it is agitated skim after, into continuous casting and rolling formed Al-Ti-B alloy line bar product.Using this work
Process has event characteristic simple to operate because reduction reaction and alloying operation are carried out simultaneously.But due to power frequency
The work characteristics of stove and substantial amounts of heat can be produced in reduction reaction, it is impossible to it is actual in reduction reaction and alloying operation,
Effective control to aluminium water mixing power and temperature can not be realized;Therefore high-quality Al-Ti-B alloy product can not be produced;Exist simultaneously
Crucible goes out alloy aluminum water using above going out method in traditional handicraft, and due to the strong precipitability of titanium elements in Al-Ti-B alloy,
So would have to increase holding furnace and magnetic stirrer, so that input cost increases.
The content of the invention
To solve the above problems, the present invention provides a kind of aluminium titanium boron production technology.
The present invention is achieved by following technical solution.
A kind of aluminium titanium boron production technology, raw material is first entered into reduction Tai Baonei and carries out reduction reaction, and according to reduction reaction
In need be stirred using agitator;Reaction to be restored is transferred in frequency conversion furnace after having carried out and carries out alloying operation;Finally
Alloy aluminum water enters casting and rolling process by crucible, obtains aluminium titanium boron finished product.
The crucible is using the crucible for going out aluminium water under using.
The coreless induction furnace that the frequency conversion furnace uses, and electromagnetic stirring force in burner hearth and the specific power density of electric furnace are into just
Than being inversely proportional with the square root of working frequency.
The variable-frequency power sources of the frequency conversion furnace uses three-phase full-wave controlled rectification.
The agitating shaft heat resisting temperature of agitator is more than 1000 DEG C in the reduction reaction.
The leading indicator of the frequency conversion furnace is:Furnace volume is 2.0T;Power supply capacity is 630KVA;Frequency conversion primary voltage is
Three-phase 380V;Frequency conversion tank range of regulation is 100~700V continuously adjustabes;Frequency scope is 40~60Hz;Rated power is 500KW;
Inductor rated voltage is 1350V;Alloying power is 2.0t/40min.
The casting of metals temperature of the crucible is up to more than 1400 DEG C.
The beneficial effects of the invention are as follows:
The main frequency furnace of traditional handicraft is transformed into frequency conversion furnace by the present invention, to realize the alloying of aluminium titanium boron molten metal, is passed through
Configure suitable power and the appropriate heat time is realized and stove is had suitable temperature in stove, while make to have in burner hearth molten metal
Enough electromagnetic agitation abilities.Compared with prior art, the present invention has following remarkable advantage:
(1) electromagnetic stirring force is adjustable:The electromagnetic stirring force and electric furnace in coreless induction furnace thorax that frequency conversion furnace of the present invention uses
Specific power density (general power/total capacity) it is directly proportional, be inversely proportional with the square root of working frequency;That is, in electric furnace work(
Rate, capacity under the same conditions (furnace power, capacity depend on production capacity and technological parameter), appropriate adjustment work frequency,
Can adjusts the electromagnetic agitation ability of burner hearth inner metal liquid;
(2) pressure regulation Power Regulation and frequency modulation Power Regulation function can be achieved:In burner hearth physical dimension, inductor-furnace charge system design system
After making completion, main frequency furnace can only realize pressure regulation Power Regulation, but for power frequency aluminium melting furnace, long-term use can cause furnace wall to aoxidize
Al deposition, makes furnace lining thickening, and power is still less than normal when at this moment sending ceiling voltage, have to change furnace lining;But adopted in present invention process
Stove is not in the mood in frequency conversion pressure regulation Power Regulation and the dual Power Regulation effect of frequency modulation Power Regulation, when furnace wall alumina deposit makes furnace lining thickening,
Working frequency can suitably be reduced, you can improve operation power, stove production capacity can be effectively improved, extend furnace lining service life;
(3) the three-phase equilibrium link for not needing power frequency supply to be equipped with:Variable-frequency power sources uses three-phase full-wave controlled rectification, three-phase
Input current rigorous equilibrium, the three-phase equilibrium link of power frequency supply, investment reduction, convenient operation can be saved;
(4) due to reduction reaction and alloy operation being separated, avoid in reduction reaction due to producing substantial amounts of heat and
Cause high temperature change uncontrollable, while reduce the holding time of crucible, improve production capacity;
(5) it is changed to down method due to crucible is gone out into aluminium water, titanium elements is prevented using electromagnetic agitation caused by frequency conversion furnace
Precipitation, without newly increasing holding furnace and magnetic stirrer, reduces the input of equipment.
Brief description of the drawings
Fig. 1 is traditional aluminium titanium boron production technological process;
Fig. 2 is aluminium titanium boron production technological process of the present invention;
Fig. 3 is using metallograph of the aluminium titanium boron under 100X obtained by traditional processing technology;
Fig. 4 is using metallograph of the aluminium titanium boron under 50X obtained by traditional processing technology;
Fig. 5 is using metallograph of the aluminium titanium boron under 100X obtained by the production technology;
Fig. 6 is using metallograph of the aluminium titanium boron under 50X obtained by the production technology;
Fig. 7 is to refine Test Drawing using traditional processing technology;
Fig. 8 is the refinement Test Drawing using production technology of the present invention;
Fig. 9 is the aluminium bar actual use figure obtained using system production technology;
Figure 10 is the aluminium bar actual use figure obtained using production technology of the present invention.
Embodiment
Technical scheme is further described with reference to implementation column, but claimed scope is not limited to institute
State.
As shown in Fig. 2 a kind of aluminium titanium boron production technology of the present invention, first enters reduction Tai Baonei by raw material and is gone back
Original reaction, and need to be stirred using agitator in reduction reaction;Reaction to be restored is transferred to frequency conversion furnace after having carried out
Interior progress alloying operation;Final alloy aluminium water enters casting and rolling process by crucible, obtains aluminium titanium boron finished product.
The crucible is using the crucible for going out aluminium water under using.
Using above-mentioned technical proposal, original main frequency furnace is changed to frequency conversion furnace, solves in traditional handicraft and uses main frequency furnace not
The problem of effective control to aluminium water mixing power and temperature can be realized, can be by being adjusted to the power frequency of equipment using frequency conversion furnace
Section realizes the combination of temperature and mixing power;By reduction reaction and alloy effect separate, avoid in reduction reaction due to
Produce substantial amounts of heat and cause high temperature change uncontrollable, while reduce the holding time of crucible, improve production capacity;
Crucible goes out aluminium water and is changed to down method, the precipitation of titanium elements is prevented using electromagnetic agitation caused by frequency conversion furnace, without new
Increase holding furnace and magnetic stirrer, reduce the input of equipment.
Main frequency furnace in traditional handicraft is transformed into frequency conversion furnace by the present invention, to realize the alloying of aluminium titanium boron molten metal, stove
Interior to have suitable temperature, this can be achieved by configuring suitable power and appropriate heat time, but more important
Be in burner hearth molten metal, it is necessary to have enough electromagnetic agitation abilities, therefore, the technical program has been done to frequency conversion furnace to be changed as follows
Enter:
To make electromagnetic stirring force adjustable:The coreless induction furnace that frequency conversion furnace in present invention process uses, and the electricity in burner hearth
Magnetic mixing power is directly proportional to the specific power density (general power/total capacity) of electric furnace, is inversely proportional with the square root of working frequency;Also
It is to say, in furnace power, capacity under the same conditions (furnace power, capacity depend on production capacity and technological parameter), suitably
Adjustment work frequency, it is possible to adjust the electromagnetic agitation ability of burner hearth inner metal liquid.
After burner hearth physical dimension, inductor-furnace charge system design manufacture are completed, main frequency furnace can only realize that pressure regulation is adjusted
Work(, but for power frequency aluminium melting furnace, long-term use can cause furnace wall alumina deposit, make furnace lining thickening, at this moment send highest electric
Power is still less than normal during pressure, have to change furnace lining.But stove is not in the mood in frequency conversion pressure regulation Power Regulation and the dual Power Regulation means of frequency modulation Power Regulation,
When furnace wall alumina deposit makes furnace lining thickening, working frequency can be suitably reduced, you can improve operation power, can effectively improve stove
Production capacity, extend furnace lining service life.
The variable-frequency power sources of the frequency conversion furnace uses three-phase full-wave controlled rectification, three-phase input current rigorous equilibrium, can save
The three-phase equilibrium link of power frequency supply, investment reduction, convenient operation.
Agitator has that alkali resistance is strong in the reduction reaction, can be achieved without hypervelocity;And the agitating shaft of agitator is heat-resisting
Temperature is more than 1000 DEG C.
The leading indicator of the frequency conversion furnace is:Furnace volume is 2.0T;Power supply capacity is 630KVA;Frequency conversion primary voltage is
Three-phase 380V;Frequency conversion tank range of regulation is 100~700V continuously adjustabes;Frequency scope is 40~60Hz;Rated power is 500KW;
Inductor rated voltage is 1350V;Alloying power is 2.0t/40min.
The crucible has ultra-high conducting hot and inoxidizability, at chemically-resistant in agent impact it is outstanding, high mechanical strength is resistance to
Corrosivity is strong, and resistance to sudden heating is strong, and fire resistance is strong, and casting of metals temperature is up to more than 1400 DEG C
Found through research experiment, it is suitable in frequency conversion furnace being ensured by configuring suitable power and appropriate heat time
While temperature, coil is the heart of coreless induction furnace, and induction coil produces powerful magnetic field in the presence of electric current, this magnetic field
The metal in burner hearth is set to produce vortex and generate heat.Designed by experimental study repeatedly, the results showed that:Using Special Main, by-pass
Enclose cascaded structure, wherein main coil surround silicon carbide crucible top and middle part, secondary coil surround silicon carbide crucible bottom and
Go out aluminium liquid pipe, can guarantee that the stability and properties of product of major parameter.
It is can be seen that from Fig. 3, Fig. 4 using the aluminium titanium boron metallographic structure skewness obtained by traditional handicraft, TiAl3 phases
Size is larger, and TiB2 phases are assembled seriously, and salt and oxidation attachment be present;
It to be not difficult to find out from Fig. 5, Fig. 6, the aluminium titanium boron metallographic structure obtained using technique of the present invention is evenly distributed,
TiAl3 phase sizes reduce, and TiB2 phases assemble reduction, no salt and Alumina build-up thing.
It is not difficult to find out from Fig. 7, Fig. 8, it is relatively rough using traditional handicraft degree of refinement, refined using technique of the present invention
Degree is thinner.
As shown in Figure 9, Figure 10, use production traditional handicraft obtained by aluminium bar product grains degree for 2 grades, using the present invention
Aluminium bar product grains degree obtained by production technology is 1 grade.Process modification effect is preferable, reaches wanting for YS/T447.1-2012
Ask.
Claims (4)
- A kind of 1. aluminium titanium boron production technology, it is characterised in that:Original main frequency furnace is changed to frequency conversion furnace, can be passed through using frequency conversion furnace The combination of temperature and mixing power is realized in power frequency regulation to equipment, reduction reaction and alloy effect is separated, specifically Step is:Raw material is first entered into reduction Tai Baonei and carries out reduction reaction, and needs to enter using agitator in reduction reaction Row stirring;Reaction to be restored is transferred in frequency conversion furnace after having carried out and carries out alloying operation;Final alloy aluminium water is entered by crucible Casting and rolling process, obtain aluminium titanium boron finished product;The coreless induction furnace that the frequency conversion furnace uses, and the electromagnetic stirring force in burner hearth is directly proportional to the specific power density of electric furnace, It is inversely proportional with the square root of working frequency;The variable-frequency power sources of the frequency conversion furnace uses three-phase full-wave controlled rectification;The leading indicator of the frequency conversion furnace is:Furnace volume is 2.0T;Power supply capacity is 630kVA;Frequency conversion primary voltage is three-phase 380V;Frequency conversion tank range of regulation is 100~700V continuously adjustabes;Frequency scope is 40~60Hz;Rated power is 500kW;Sensing Device rated voltage is 1350V;Alloying power is 2.0t/40min;The coreless induction furnace using Special Main, secondary coil cascaded structure, wherein main coil surround silicon carbide crucible top and Middle part, secondary coil surround the bottom of silicon carbide crucible and go out aluminium liquid pipe.
- A kind of 2. aluminium titanium boron production technology according to claim 1, it is characterised in that:The crucible goes out aluminium under using The crucible of water.
- A kind of 3. aluminium titanium boron production technology according to claim 1, it is characterised in that:Agitator in the reduction reaction Agitating shaft heat resisting temperature is more than 1000 DEG C.
- A kind of 4. aluminium titanium boron production technology according to claim 1, it is characterised in that:The casting of metals temperature of the crucible Up to more than 1400 DEG C.
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CN1810416A (en) * | 2005-01-24 | 2006-08-02 | 上海智诚电讯材料有限公司 | Control method and device for continuous metal monocrystal casting process |
CN1904099A (en) * | 2005-07-28 | 2007-01-31 | 福州正邦冶金材料有限公司 | Formula for preparing aluminium titanium boron wire intermediate alloy and its technology |
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CN1810416A (en) * | 2005-01-24 | 2006-08-02 | 上海智诚电讯材料有限公司 | Control method and device for continuous metal monocrystal casting process |
CN1904099A (en) * | 2005-07-28 | 2007-01-31 | 福州正邦冶金材料有限公司 | Formula for preparing aluminium titanium boron wire intermediate alloy and its technology |
CN101782324A (en) * | 2010-02-05 | 2010-07-21 | 新星化工冶金材料(深圳)有限公司 | Electromagnetic induction electric melting furnace for controlling average nominal diameter of TiB2(TiC) particle group in Al-Ti-B (Al-Ti-C) alloy |
CN103074506A (en) * | 2013-01-09 | 2013-05-01 | 湖南金联星特种材料股份有限公司 | Two-step charging method for preparing high-quality Al-Ti-B intermediate alloy refiner |
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