CN104651646B - A kind of Al-Ti-B alloy using multifrequency induction furnace to produce and production technology thereof - Google Patents

A kind of Al-Ti-B alloy using multifrequency induction furnace to produce and production technology thereof Download PDF

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CN104651646B
CN104651646B CN201510065722.XA CN201510065722A CN104651646B CN 104651646 B CN104651646 B CN 104651646B CN 201510065722 A CN201510065722 A CN 201510065722A CN 104651646 B CN104651646 B CN 104651646B
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谢石华
杨远喜
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Jiangsu Hua Ye Aluminum Polytron Technologies Inc
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Abstract

The invention discloses a kind of Al-Ti-B alloy using multifrequency induction furnace to produce and production technology thereof, the raw material using the Al-Ti-B alloy of multifrequency induction furnace production includes aluminium ingot, potassium fluotitanate, Potassium borofluoride, diluent, refining agent and slag absorbing agent, and the raw material of slag absorbing agent includes sodium chloride, potassium chloride, prodan and calcium fluoride.The invention provides a kind of method that aluminum titanium boron series intermediate alloy producing high-quality is important, multifrequency electric furnace is used to produce Al-Ti-B alloy, before charging, aluminum liquid is carried out refine and adds the villiaumite mixture heterogeneous nucleating agent as late phase reaction, titanium and boron particles compound that late phase reaction produces are more evenly distributed, villiaumite mixture adds diluent, it is effectively controlled response speed and improves the isolation of purified effect of villiaumite slag and alloy, pass through check analysis, in the product that the present invention produces, titanium and boron particles compound are tiny, being evenly distributed, slag content is few.

Description

A kind of Al-Ti-B alloy using multifrequency induction furnace to produce and production technology thereof
Technical field
The present invention relates to a kind of Al-Ti-B alloy production technology, a kind of Al-Ti-B alloy using multifrequency induction furnace to produce and production technology thereof.
Background technology
The theoretical research prepared about Al-Ti-B intermediate alloy at present is the most, can be divided into conventional ceramic technique, villiaumite method and pure titanium granule method etc. according to feedstock property;Thermit reduction, electrolysis, self-propagating high-temperature synthesis etc. can be divided into again according to preparation technology.But producing high-quality Al-Ti-B intermediate alloy at present in the industry and using is villiaumite method widely, i.e. utilizes K2TiF6And KBF4Al-Ti-B alloy is produced by thermit reaction.
2) its shortcoming of villiaumite method is the by-product fluoaluminic acid potassium salt owing to producing in alloying process and the fused salt field trash of bringing the corrosion of refractory material into, is difficult to effective from Al-Ti-B alloy thoroughly remove.Cause these impurity to bring into fining agent in the middle of the alloy being refined, reduce aluminium alloy thinning effect greatly.
3) the most industrially produce that size is tiny, the uniform TiB of Dispersed precipitate2Mutually with-TiAl3The problem faced with the high high-end Al-Ti-B alloy of clarity product mutually.Current domestic Al-Ti-B intermediate alloy fining agent quality is general, is primarily present TiB in alloy structure2Phase and TiAl3Certain or multiple quality index in the form of phase, size and distribution, and oxide and villiaumite impurity content do not reach requirement.Therefore the Al-Ti-B alloy that common law produces can not meet the requirement of the micronization processes of high-grade, precision and advanced, high-quality aluminum alloy material that is growing and that constantly bring forth new ideas.
Summary of the invention
It is an object of the invention to provide a kind of be evenly distributed, Al-Ti-B alloy that slag poor use multifrequency induction furnace produces and production technology thereof, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of Al-Ti-B alloy using multifrequency induction furnace to produce, includes according to the raw material of weight portion: aluminium ingot 800-1200 part, potassium fluotitanate 160-310 part, Potassium borofluoride 80-150 part, diluent 25-30 part, refining agent 8-12 part, slag absorbing agent 8-12 part;Described slag absorbing agent includes according to the raw material of weight portion: sodium chloride 3.2-4.8 part, potassium chloride 2.4-3.6 part, prodan 2-3 part, calcium fluoride 0.4-0.6 part.
Described use multifrequency induction furnace produces the production technology of Al-Ti-B alloy, specifically comprises the following steps that
(1) dispensing and batch mixing: weigh Potassium borofluoride according to weight portion and carry out mixing 10-12min with batch mixer after potassium fluotitanate and obtain villiaumite mixture;
(2) aluminium ingot fusing: weigh aluminium ingot according to weight portion, after aluminium ingot being put in aluminium melting furnace and being heated to 740-800 DEG C, aluminum water and unfused aluminium ingot are all poured in multifrequency induction furnace;
(3) fine aluminium processes: opens multifrequency induction furnace and is at A frequency range, regulation power stirring, open environmental protection equipment, refining agent and the villiaumite mixture of 15-25% is added with charger, feed time is 5-10min, keeps the temperature in multifrequency induction furnace to be 850-900 DEG C and carries out heating 10-12min, multifrequency induction furnace is switched to B frequency range, blowing out after insulation 15-20min, outwells the villiaumite pulp water layer on upper strata in stove;
(4) alloying reaction: open multifrequency induction furnace and be at A frequency range, regulation power stirring, open environmental protection equipment and agitating device, diluent is joined in remaining villiaumite mixture, and by charger, the villiaumite mixture being mixed with diluent being joined in multifrequency induction furnace, feed time is 25-40min, makes course of reaction temperature be 700-886 DEG C by regulation furnace power with charging rate, after charging terminates 10-15min, stop agitating device;
(4) insulation and scarfing cinder: multifrequency induction furnace is switched to B frequency range, regulates power, makes electric furnace be in keeping warm mode, holding temperature is 750-850 DEG C, stop electric furnace after insulation 25-30min, after standing 8-10min, outwell villiaumite pulp water layer, add slag absorbing agent slag absorbing and clear up;
(6) degasification and refine: the molten metal after scarfing cinder proceeds to refine casting furnace, uses rotary degassing machine stirring 2-3min, cleaning upper strata scum silica frost;Opening multifrequency induction furnace peak power, re-use rotary degassing machine and carry out rotating degasification, after multifrequency induction furnace temperature reaches 780-820 DEG C, regulation multifrequency induction furnace is at keeping warm mode, stops degasification after degasification 30-45min, closes stove, cleaning furnace wall slag;
(7) casting: after having cleared up, blow-on is at keeping warm mode again, prepares casting, and cast temperature is 770-830 DEG C, and casting rate is 1.5-2.5t/h, regulates cooling system rolling temperature control, enters to roll temperature and be 450-550 DEG C, be rolled into Al-Ti-B alloy rod;
(8) prepurging: timely prepurging after having produced, every stove once, during prepurging, remove clean with scoop by the lime-ash caking on furnace wall and chimney corner.
As the further scheme of the present invention: described step (3) is to adding refining agent and the villiaumite mixture heterogeneous nucleating agent as late phase reaction in aluminum liquid.
As the further scheme of the present invention: in described step (4), unlatching agitating device makes the villiaumite mixture of addition and aluminum liquid Rapid contact reacts the titanium produced and boron particles compound spreads out, and obtains the tiny particle phase alloy being evenly distributed.
As the further scheme of the present invention: when described step (5) is incubated, multifrequency induction furnace is in B frequency range so that aluminium alloy bottom is stirred, and top keeps static state, bottom stirring prevents titanium and the sedimentation of boron particles compound, reunites and segregation, prevents villiaumite to be involved in alloy and the exposed oxidation of aluminium alloy.
As the further scheme of the present invention: in described step (6), the rotating speed of rotary degassing machine is 250-350r/min, the gas of use is argon, and gas flow is 1-1.5m3/min。
As the present invention further scheme: described multifrequency induction furnace is 100-300Hz in the frequency of A frequency range, and the frequency in B frequency range is 500-1000HZ.
Compared with prior art, the invention has the beneficial effects as follows:
The invention provides a kind of method that aluminum titanium boron series intermediate alloy producing high-quality is important, multifrequency electric furnace is used to produce Al-Ti-B alloy, before charging, aluminum liquid is carried out refine and adds the villiaumite mixture heterogeneous nucleating agent as late phase reaction, titanium and boron particles compound that late phase reaction produces are more evenly distributed, villiaumite mixture adds diluent, it is effectively controlled response speed and improves the isolation of purified effect of villiaumite slag and alloy, pass through check analysis, in the product that the present invention produces, titanium and boron particles compound are tiny, being evenly distributed, slag content is few.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Embodiment 1
The manufacture of AlT5iB1 alloy
A kind of Al-Ti-B alloy using multifrequency induction furnace to produce, including according to the raw material of weight portion: aluminium ingot 1000 parts, potassium fluotitanate 260 parts, Potassium borofluoride 128 parts, diluent 30 parts, refining agent 10 parts, slag absorbing agent 10 parts, described slag absorbing agent includes according to the raw material of weight portion: 4 parts of sodium chloride, 3.5 parts of potassium chloride, prodan 2 parts, 0.5 part of calcium fluoride.
Described use multifrequency induction furnace produces the production technology of Al-Ti-B alloy, specifically comprises the following steps that
(1) dispensing and batch mixing: weigh Potassium borofluoride according to weight portion and carry out mixing 10min with batch mixer after potassium fluotitanate and obtain villiaumite mixture;
(2) aluminium ingot fusing: weigh aluminium ingot according to weight portion, after aluminium ingot being put in aluminium melting furnace and being heated to 780 DEG C, aluminum water and unfused aluminium ingot are all poured in multifrequency induction furnace;
(3) fine aluminium processes: opens multifrequency induction furnace and is at A frequency range, frequency is 100Hz, regulation power stirring, opens environmental protection equipment, refining agent and the villiaumite mixture of 15% is added with charger, as the heterogeneous nucleating agent of late phase reaction, feed time is 5min, keeps the temperature in multifrequency induction furnace to be 850 DEG C and carries out heating 10min, multifrequency induction furnace is switched to B frequency range, frequency is 500HZ, blowing out after insulation 15in, outwells the villiaumite pulp water layer on upper strata in stove;
(4) alloying reaction: open multifrequency induction furnace and be at A frequency range, regulation power stirring, open environmental protection equipment and agitating device, diluent is joined in remaining villiaumite mixture, and by charger, the villiaumite mixture being mixed with diluent is joined in multifrequency induction furnace, agitating device makes the villiaumite mixture of addition and aluminum liquid Rapid contact reacts the titanium produced and boron particles compound spreads out, obtain the tiny particle phase alloy being evenly distributed, feed time is 30min, course of reaction temperature is made to be 750 DEG C by regulation furnace power with charging rate, after charging terminates 10min, stop agitating device;
(5) insulation and scarfing cinder: multifrequency induction furnace is switched to B frequency range, regulation power, making electric furnace be in keeping warm mode so that aluminium alloy bottom is stirred, top keeps static state, bottom stirring prevents titanium and the sedimentation of boron particles compound, reunites and segregation, preventing villiaumite to be involved in alloy and the exposed oxidation of aluminium alloy, holding temperature is 750 DEG C, stops electric furnace after insulation 30min, outwell villiaumite pulp water layer after standing 8min, add slag absorbing agent slag absorbing and clear up;
(6) degasification and refine: the molten metal after scarfing cinder proceeds to refine casting furnace, uses rotary degassing machine stirring 2min, cleaning upper strata scum silica frost;Opening multifrequency induction furnace peak power, re-use rotary degassing machine and carry out rotating degasification, the rotating speed of rotary degassing machine is 250r/min, and the gas of use is argon, and gas flow is 1m3/ min, after multifrequency induction furnace temperature reaches 800 DEG C, regulation multifrequency induction furnace is at keeping warm mode, stops degasification after degasification 30min, closes stove, cleaning furnace wall slag;
(7) casting: after having cleared up, blow-on is at keeping warm mode again, prepares casting, and cast temperature is 770 DEG C, and casting rate is 1.5t/h, regulates cooling system rolling temperature control, and entering to roll temperature is 450 DEG C, is rolled into Al-Ti-B alloy rod;
(8) prepurging: timely prepurging after having produced, every stove once, during prepurging, remove clean with scoop by the lime-ash caking on furnace wall and chimney corner.
Embodiment 2
The manufacture of AlT3iB1 alloy
A kind of Al-Ti-B alloy using multifrequency induction furnace to produce, including according to the raw material of weight portion: aluminium ingot 1000 parts, potassium fluotitanate 160 parts, Potassium borofluoride 128 parts, diluent 30 parts, refining agent 10 parts, slag absorbing agent 8 parts, described slag absorbing agent includes according to the raw material of weight portion: 3.2 parts of sodium chloride, 2.4 parts of potassium chloride, prodan 2 parts, 0.4 part of calcium fluoride.
Described use multifrequency induction furnace produces the production technology of Al-Ti-B alloy, specifically comprises the following steps that
(1) dispensing and batch mixing: weigh Potassium borofluoride according to weight portion and carry out mixing 11min with batch mixer after potassium fluotitanate and obtain villiaumite mixture;
(2) aluminium ingot fusing: weigh aluminium ingot according to weight portion, after aluminium ingot being put in aluminium melting furnace and being heated to 750 DEG C, aluminum water and unfused aluminium ingot are all poured in multifrequency induction furnace;
(3) fine aluminium processes: opens multifrequency induction furnace and is at A frequency range, frequency is 200Hz, regulation power stirring, opens environmental protection equipment, refining agent and the villiaumite mixture of 20% is added with charger, as the heterogeneous nucleating agent of late phase reaction, feed time is 6min, keeps the temperature in multifrequency induction furnace to be 870 DEG C and carries out heating 11min, multifrequency induction furnace is switched to B frequency range, frequency is 700HZ, blowing out after insulation 18min, outwells the villiaumite pulp water layer on upper strata in stove;
(4) alloying reaction: open multifrequency induction furnace and be at A frequency range, regulation power stirring, open environmental protection equipment and agitating device, diluent is joined in remaining villiaumite mixture, and by charger, the villiaumite mixture being mixed with diluent is joined in multifrequency induction furnace, agitating device makes the villiaumite mixture of addition and aluminum liquid Rapid contact reacts the titanium produced and boron particles compound spreads out, obtain the tiny particle phase alloy being evenly distributed, feed time is 30min, course of reaction temperature is made to be 800 DEG C by regulation furnace power with charging rate, after charging terminates 12min, stop agitating device;
(5) insulation and scarfing cinder: multifrequency induction furnace is switched to B frequency range, regulation power, making electric furnace be in keeping warm mode so that aluminium alloy bottom is stirred, top keeps static state, bottom stirring prevents titanium and the sedimentation of boron particles compound, reunites and segregation, preventing villiaumite to be involved in alloy and the exposed oxidation of aluminium alloy, holding temperature is 800 DEG C, stops electric furnace after insulation 28min, outwell villiaumite pulp water layer after standing 9min, add slag absorbing agent slag absorbing and clear up;
(6) degasification and refine: the molten metal after scarfing cinder proceeds to refine casting furnace, uses rotary degassing machine stirring 2.5min, cleaning upper strata scum silica frost;Opening multifrequency induction furnace peak power, re-use rotary degassing machine and carry out rotating degasification, the rotating speed of rotary degassing machine is 300r/min, and the gas of use is argon, and gas flow is 1.2m3/ min, after multifrequency induction furnace temperature reaches 800 DEG C, regulation multifrequency induction furnace is at keeping warm mode, stops degasification after degasification 35min, closes stove, cleaning furnace wall slag;
(7) casting: after having cleared up, blow-on is at keeping warm mode again, prepares casting, and cast temperature is 800 DEG C, and casting rate is 2t/h, regulates cooling system rolling temperature control, and entering to roll temperature is 500 DEG C, is rolled into Al-Ti-B alloy rod;
(8) prepurging: timely prepurging after having produced, every stove once, during prepurging, remove clean with scoop by the lime-ash caking on furnace wall and chimney corner.
Embodiment 3
The manufacture of AlT3iB0.2 alloy
A kind of Al-Ti-B alloy using multifrequency induction furnace to produce, including according to the raw material of weight portion: aluminium ingot 1100 parts, potassium fluotitanate 300 parts, Potassium borofluoride 150 parts, diluent 30 parts, refining agent 12 parts, slag absorbing agent 12 parts, described slag absorbing agent includes according to the raw material of weight portion: 4.8 parts of sodium chloride, 3.6 parts of potassium chloride, prodan 3 parts, 0.6 part of calcium fluoride.
Described use multifrequency induction furnace produces the production technology of Al-Ti-B alloy, specifically comprises the following steps that
(1) dispensing and batch mixing: weigh Potassium borofluoride according to weight portion and carry out mixing 12min with batch mixer after potassium fluotitanate and obtain villiaumite mixture;
(2) aluminium ingot fusing: weigh aluminium ingot according to weight portion, after aluminium ingot being put in aluminium melting furnace and being heated to 800 DEG C, aluminum water and unfused aluminium ingot are all poured in multifrequency induction furnace;
(3) fine aluminium processes: opens multifrequency induction furnace and is at A frequency range, frequency is 300Hz, regulation power stirring, opens environmental protection equipment, refining agent and the villiaumite mixture of 25% is added with charger, as the heterogeneous nucleating agent of late phase reaction, feed time is 10min, keeps the temperature in multifrequency induction furnace to be 900 DEG C and carries out heating 12min, multifrequency induction furnace is switched to B frequency range, frequency is 1000HZ, blowing out after insulation 20min, outwells the villiaumite pulp water layer on upper strata in stove;
(4) alloying reaction: open multifrequency induction furnace and be at A frequency range, regulation power stirring, open environmental protection equipment and agitating device, diluent is joined in remaining villiaumite mixture, and by charger, the villiaumite mixture being mixed with diluent is joined in multifrequency induction furnace, agitating device makes the villiaumite mixture of addition and aluminum liquid Rapid contact reacts the titanium produced and boron particles compound spreads out, obtain the tiny particle phase alloy being evenly distributed, feed time is-40min, course of reaction temperature is made to be 886 DEG C by regulation furnace power with charging rate, after charging terminates 15min, stop agitating device;
(5) insulation and scarfing cinder: multifrequency induction furnace is switched to B frequency range, regulation power, making electric furnace be in keeping warm mode so that aluminium alloy bottom is stirred, top keeps static state, bottom stirring prevents titanium and the sedimentation of boron particles compound, reunites and segregation, preventing villiaumite to be involved in alloy and the exposed oxidation of aluminium alloy, holding temperature is 850 DEG C, stops electric furnace after insulation 30min, outwell villiaumite pulp water layer after standing 10min, add slag absorbing agent slag absorbing and clear up;
(6) degasification and refine: the molten metal after scarfing cinder proceeds to refine casting furnace, uses rotary degassing machine stirring 3min, cleaning upper strata scum silica frost;Opening multifrequency induction furnace peak power, re-use rotary degassing machine and carry out rotating degasification, the rotating speed of rotary degassing machine is 350r/min, and the gas of use is argon, and gas flow is 1.5m3/ min, after multifrequency induction furnace temperature reaches 820 DEG C, regulation multifrequency induction furnace is at keeping warm mode, stops degasification after degasification 45min, closes stove, cleaning furnace wall slag;
(7) casting: after having cleared up, blow-on is at keeping warm mode again, prepares casting, and cast temperature is 830 DEG C, and casting rate is 1.5-2.5t/h, regulates cooling system rolling temperature control, and entering to roll temperature is 550 DEG C, is rolled into Al-Ti-B alloy rod;
(8) prepurging: timely prepurging after having produced, every stove once, during prepurging, remove clean with scoop by the lime-ash caking on furnace wall and chimney corner.
The invention provides a kind of method that aluminum titanium boron series intermediate alloy producing high-quality is important, multifrequency electric furnace is used to produce Al-Ti-B alloy, before charging, aluminum liquid is carried out refine and adds the villiaumite mixture heterogeneous nucleating agent as late phase reaction, titanium and boron particles compound that late phase reaction produces are more evenly distributed, villiaumite mixture adds diluent, it is effectively controlled response speed and improves the isolation of purified effect of villiaumite slag and alloy, pass through check analysis, in the product that the present invention produces, titanium and boron particles compound are tiny, being evenly distributed, slag content is few.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art is possessed, it is also possible to various changes can be made on the premise of without departing from this patent objective.

Claims (6)

1. one kind uses the production technology that multifrequency induction furnace produces Al-Ti-B alloy, it is characterised in that specifically comprise the following steps that
(1) dispensing and batch mixing: weigh Potassium borofluoride according to weight portion and carry out mixing 10-12min with batch mixer after potassium fluotitanate and obtain villiaumite mixture;
(2) aluminium ingot fusing: weigh aluminium ingot according to weight portion, after aluminium ingot being put in aluminium melting furnace and being heated to 740-800 DEG C, aluminum water and unfused aluminium ingot are all poured in multifrequency induction furnace;
(3) fine aluminium processes: opens multifrequency induction furnace and is at A frequency range, regulation power stirring, open environmental protection equipment, refining agent and the villiaumite mixture of 15-25% is added with charger, feed time is 5-10min, keeps the temperature in multifrequency induction furnace to be 850-900 DEG C and carries out heating 10-12min, multifrequency induction furnace is switched to B frequency range, blowing out after insulation 15-20min, outwells the villiaumite pulp water layer on upper strata in stove;
(4) alloying reaction: open multifrequency induction furnace and be at A frequency range, regulation power stirring, open environmental protection equipment and agitating device, diluent is joined in remaining villiaumite mixture, and by charger, the villiaumite mixture being mixed with diluent being joined in multifrequency induction furnace, feed time is 25-40min, makes course of reaction temperature be 700-886 DEG C by regulation furnace power with charging rate, after charging terminates 10-15min, stop agitating device;
(5) insulation and scarfing cinder: multifrequency induction furnace is switched to B frequency range, regulates power, makes electric furnace be in keeping warm mode, holding temperature is 750-850 DEG C, stop electric furnace after insulation 25-30min, after standing 8-10min, outwell villiaumite pulp water layer, add slag absorbing agent slag absorbing and clear up;
(6) degasification and refine: the molten metal after scarfing cinder proceeds to refine casting furnace, uses rotary degassing machine stirring 2-3min, cleaning upper strata scum silica frost;Opening multifrequency induction furnace peak power, re-use rotary degassing machine and carry out rotating degasification, after multifrequency induction furnace temperature reaches 780-820 DEG C, regulation multifrequency induction furnace is at keeping warm mode, stops degasification after degasification 30-45min, closes stove, cleaning furnace wall slag;
(7) casting: after having cleared up, blow-on is at keeping warm mode again, prepares casting, and cast temperature is 770-830 DEG C, and casting rate is 1.5-2.5t/h, regulates cooling system rolling temperature control, enters to roll temperature and be 450-550 DEG C, be rolled into Al-Ti-B alloy rod;
(8) prepurging: timely prepurging after having produced, every stove once, during prepurging, remove clean with scoop by the lime-ash caking on furnace wall and chimney corner;
The Al-Ti-B alloy that described use multifrequency induction furnace produces, includes according to the raw material of weight portion: aluminium ingot 800-1200 part, potassium fluotitanate 160-310 part, Potassium borofluoride 80-150 part, diluent 25-30 part, refining agent 8-12 part, slag absorbing agent 8-12 part;Described slag absorbing agent includes according to the raw material of weight portion: sodium chloride 3.2-4.8 part, potassium chloride 2.4-3.6 part, prodan 2-3 part, calcium fluoride 0.4-0.6 part.
Use multifrequency induction furnace the most according to claim 1 produces the production technology of Al-Ti-B alloy, it is characterised in that described step (3) is to adding refining agent and the villiaumite mixture heterogeneous nucleating agent as late phase reaction in aluminum liquid.
Use multifrequency induction furnace the most according to claim 2 produces the production technology of Al-Ti-B alloy, it is characterized in that, in described step (4), unlatching agitating device makes the villiaumite mixture of addition and aluminum liquid Rapid contact reacts the titanium produced and boron particles compound spreads out, and obtains the tiny particle phase alloy being evenly distributed.
Use multifrequency induction furnace the most according to claim 1 produces the production technology of Al-Ti-B alloy, it is characterized in that, when described step (5) is incubated, multifrequency induction furnace is in B frequency range, aluminium alloy bottom is stirred, top keeps static state, bottom stirring to prevent titanium and the sedimentation of boron particles compound, reunite and segregation, prevents villiaumite to be involved in alloy and the exposed oxidation of aluminium alloy.
Use multifrequency induction furnace the most according to claim 1 produces the production technology of Al-Ti-B alloy, it is characterised in that in described step (6), the rotating speed of rotary degassing machine is 250-350r/min, and the gas of use is argon, and gas flow is 1-1.5m3/min。
Use multifrequency induction furnace the most according to claim 1 produces the production technology of Al-Ti-B alloy, it is characterised in that described multifrequency induction furnace is 100-300Hz in the frequency of A frequency range, and the frequency in B frequency range is 500-1000HZ.
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