CN111378855A - Novel manufacturing process method of AlSi30 - Google Patents
Novel manufacturing process method of AlSi30 Download PDFInfo
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- CN111378855A CN111378855A CN202010311168.XA CN202010311168A CN111378855A CN 111378855 A CN111378855 A CN 111378855A CN 202010311168 A CN202010311168 A CN 202010311168A CN 111378855 A CN111378855 A CN 111378855A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D3/00—Pig or like casting
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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
- C22C1/06—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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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Abstract
The invention discloses a novel manufacturing process method of AlSi30, which comprises a preparation method of AlSi30 intermediate alloy aluminum liquid and a continuous casting production method of AlSi30 intermediate alloy ingots, wherein in a 1-ton intermediate frequency furnace crucible, the AlSi30 intermediate alloy aluminum liquid is prepared by taking metal silicon and electrolytic aluminum liquid as raw materials, and the AlSi30 intermediate alloy aluminum liquid has the index requirements that: the Si content is 28-32%, and the Fe content is less than or equal to 0.20%; and (3) tipping the intermediate frequency furnace, quickly injecting AlSi30 intermediate alloy molten aluminum into the tundish, introducing into a casting machine, and carrying out continuous casting production of AlSi30 intermediate alloy ingots. The AlSi30 intermediate alloy ingot prepared by the method has stable and uniform components, compact internal structure, smooth and clean surface, no impurities, improved casting speed, saved production space, reduced labor waste of personnel, greatly reduced energy consumption, capability of fully meeting the requirements of production enterprises, high safety and easy popularization and use, and is an optimal production method for producing the AlSi30 intermediate alloy ingot.
Description
The technical field is as follows:
the invention relates to a manufacturing process method of AlSi30, which is widely applied to producing AlSi30 intermediate alloy ingots, and can obviously improve the production efficiency and reduce the energy consumption.
Secondly, background art:
the aluminum-silicon alloy ingot is an aluminum intermediate alloy ingot with a large using amount in aluminum alloy smelting and casting enterprises. The production process of the aluminum-silicon intermediate alloy ingot is various, and the content of silicon in the alloy ingot is also various. Along with the market demand, the mass percentage content of silicon in the aluminum-silicon binary intermediate alloy is continuously increased, the viscosity of the alloy aluminum liquid is increased, the fluidity is deteriorated, and the production difficulty is multiplied. At present, an AlSi30 intermediate alloy ingot is produced by adopting a manual casting mode, ingot mold frames are arranged all the time, the space of a production site is wasted, the temperature is extremely high, the environment is severe, the production efficiency is low, and the waste of manpower and energy is serious.
Thirdly, the invention content:
the technical problem to be solved by the invention is as follows: the process overcomes the defect that the original AlSi30 alloy ingot manufacturing process lags behind, provides a novel AlSi30 manufacturing process, comprises a preparation method of AlSi30 intermediate alloy molten aluminum and a continuous casting production method of AlSi30 intermediate alloy ingots, improves the production efficiency, reduces the waste of labor force of workers, obviously improves the product quality, greatly reduces the energy consumption, and can meet the requirements of production enterprises.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a novel manufacturing process method of AlSi30 comprises a preparation method of AlSi30 intermediate alloy aluminum liquid and a continuous casting production method of AlSi30 intermediate alloy ingots, wherein in a crucible of a 1-ton intermediate frequency furnace, the AlSi30 intermediate alloy aluminum liquid is prepared by taking metal silicon and electrolytic aluminum liquid as raw materials, and the AlSi30 intermediate alloy aluminum liquid has the index requirements that: the Si content is 28-32%, and the Fe content is less than or equal to 0.20%; and (3) tipping the intermediate frequency furnace, quickly injecting AlSi30 intermediate alloy molten aluminum into the tundish, introducing into a casting machine, and carrying out continuous casting production of AlSi30 intermediate alloy ingots.
The preparation method of the AlSi30 intermediate alloy aluminum liquid comprises the following specific operation steps:
A. preparing AlSi30 alloy aluminum liquid by taking metallic silicon, electrolytic aluminum liquid and aluminum ingots as raw materials,
the index requirements of the metallic silicon are as follows: the Si content is more than or equal to 99.8 percent, and the Fe content is less than or equal to 0.30 percent;
the index requirements of the electrolytic aluminum liquid are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
the index requirements of the aluminum ingot are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
B. adding 600 parts by weight of electrolytic aluminum liquid into a crucible of an intermediate frequency furnace, starting 60% power, and raising the temperature to 760-780 ℃;
C. shoveling the slag on the crucible wall from top to bottom along the crucible wall by using a 1.5m crucible shovel maintained by titanium dioxide, then scattering a proper amount of slag removing agent, and fishing the slag;
D. the quality requirements of adding the metal silicon are as follows:
the quality requirement is as follows: the mass fraction of the metallic silicon is more than or equal to 99.8%, the metallic silicon is black and blocky, the granularity is 50-100 mm, and other impurities cannot be mixed;
E. after deslagging, adding metal silicon into a crucible of the intermediate frequency furnace for three times, adding 150 parts by weight of metal silicon for the first time, pressing the metal silicon into molten aluminum to be completely wrapped by a pressing shovel, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the second time, pressing the metal silicon into the aluminum liquid through a pressing shovel to be completely wrapped, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the third time, pressing the metal silicon into the aluminum liquid through a pressing shovel to completely wrap the aluminum liquid, and starting the heating power to 60% for heating;
F. after silicon is added for the third time, starting the intermediate frequency furnace with the power of 60% to heat the aluminum liquid to 900 ℃, adjusting the power of the intermediate frequency furnace to 30%, preserving the heat, and alloying for 20-25 minutes;
G. adding 100 parts by weight of aluminum ingot, cooling to 840 ℃, and continuously introducing nitrogen N with purity not less than 99.999% into a crucible of the intermediate frequency furnace2Refining for 6-8 minutes in a nitrogen state;
H. manually casting and testing the surface of the alloy ingot to have no bubbles and uniform fracture without segregation, which indicates that the alloy aluminum liquid meets the standard;
I. and starting the intermediate frequency furnace to 60 percent of power, and heating the alloy aluminum liquid to 900 ℃ to obtain AlSi30 intermediate alloy aluminum liquid.
The continuous casting production method of the AlSi30 intermediate alloy ingot comprises the following specific operation steps:
A. tipping a crucible of the intermediate frequency furnace, quickly injecting AlSi30 intermediate alloy aluminum liquid prepared in the claim 2 into a transfer ladle, and introducing the alloy aluminum liquid into a small flow trough below the transfer ladle through a chute at the outlet of the transfer ladle;
B. starting the casting machine, controlling the speed of the casting machine to be 13-15 min/m, manually controlling the small chute to swing up and down, and distributing the alloy aluminum liquid into the casting machine ingot mould;
C. before the surface of the alloy aluminum liquid is solidified, carrying out slag scraping treatment on oxide skin on the surface of an ingot face;
D. the casting machine cools the alloy aluminum liquid to a position 6 m from the casting point, and when metal balls appear on the surface, the metal balls are processed by a scraper knife, so that the surface is smooth and has no mark;
E. and cooling and crystallizing the alloy aluminum liquid by using a casting machine, and then carrying out alignment by using an alignment table and stacking by using a mechanical arm to obtain the prepared AlSi30 intermediate alloy ingot.
Various parameters of the AlSi30 intermediate alloy ingot produced by the method are as follows:
alloy components: 28-32% of Si, less than or equal to 0.20% of Fe, less than 0.05% of other single impurities, less than 0.15% of total impurities and the balance of Al.
The product specification is as follows: 680 x 95 x 50 mm;
the product appearance is as follows: smooth and clean surface, no flash, burr, slag inclusion, corrosion, oil stain and the like.
Fracture organization: the crystal grains are uniform and fine, and have no defects such as inclusions.
The invention can produce the following positive effects:
1. the novel manufacturing process method of the AlSi30 is used in the production process, improves the production efficiency of the AlSi30 intermediate alloy ingot, improves the field working environment, reduces the waste of labor force of personnel, obviously improves the product quality, greatly reduces the energy consumption, improves the safety performance, can fully meet the requirements of production enterprises, and is easy to popularize and use.
2. The preparation method of the AlSi30 intermediate alloy aluminum liquid is used in the production process, and the metallic silicon is put into the aluminum liquid in batches, so that the metallic silicon can react rapidly in the aluminum liquid in stages, and crystal grains are uniformly distributed; the continuous stirring in the intermediate frequency furnace ensures that the mass percentage content of the silicon is uniformly distributed and the composition segregation is not easy to occur; the temperature parameters are accurately controlled, so that the preparation efficiency of the alloy aluminum liquid is rapidly improved.
3. The continuous casting production method of the AlSi30 intermediate alloy ingot is used in the production process, improves the casting speed of the AlSi30 intermediate alloy ingot, saves the production space, reduces the waste of labor force of personnel, obviously improves the product quality, greatly reduces the energy consumption, can fully meet the requirements of production enterprises, improves the safety performance, and is easy to popularize and use.
Fourthly, the specific implementation mode:
the technical solutions of the present invention will be further described in detail and clearly in the following with reference to specific examples, but the scope of the present invention is not limited thereto.
Example 1:
a novel manufacturing process method of AlSi30 comprises a preparation method of AlSi30 intermediate alloy aluminum liquid and a continuous casting production method of AlSi30 intermediate alloy ingots, wherein in a crucible of a 1-ton intermediate frequency furnace, the AlSi30 intermediate alloy aluminum liquid is prepared by taking metal silicon and electrolytic aluminum liquid as raw materials, and the AlSi30 intermediate alloy aluminum liquid has the index requirements that: the Si content is 28-32%, and the Fe content is less than or equal to 0.20%; and (3) tipping the intermediate frequency furnace, quickly injecting AlSi30 intermediate alloy molten aluminum into the tundish, introducing into a casting machine, and carrying out continuous casting production of AlSi30 intermediate alloy ingots.
Example 2:
a preparation method of AlSi30 intermediate alloy aluminum liquid comprises the following specific operation steps:
A. preparing AlSi30 alloy aluminum liquid by taking metallic silicon, electrolytic aluminum liquid and aluminum ingots as raw materials,
the index requirements of the metallic silicon are as follows: the Si content is more than or equal to 99.8 percent, and the Fe content is less than or equal to 0.30 percent;
the index requirements of the electrolytic aluminum liquid are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
the index requirements of the aluminum ingot are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
B. adding 600 parts by weight of electrolytic aluminum liquid into a crucible of an intermediate frequency furnace, starting 60% power, and raising the temperature to 760-780 ℃;
C. shoveling the slag on the crucible wall from top to bottom along the crucible wall by using a 1.5m crucible shovel maintained by titanium dioxide, then scattering a proper amount of slag removing agent, and fishing the slag;
D. the quality requirements of adding the metal silicon are as follows:
the quality requirement is as follows: the mass fraction of the metallic silicon is more than or equal to 99.8%, the metallic silicon is black and blocky, the granularity is 50-100 mm, and other impurities cannot be mixed;
E. after deslagging, adding metal silicon into a crucible of the intermediate frequency furnace for three times, adding 150 parts by weight of metal silicon for the first time, pressing the metal silicon into molten aluminum to be completely wrapped by a pressing shovel, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the second time, pressing the metal silicon into the aluminum liquid through a pressing shovel to be completely wrapped, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the third time, pressing the metal silicon into the aluminum liquid through a pressing shovel to completely wrap the aluminum liquid, and starting the heating power to 60% for heating;
F. after silicon is added for the third time, starting the intermediate frequency furnace with the power of 60% to heat the aluminum liquid to 900 ℃, adjusting the power of the intermediate frequency furnace to 30%, preserving the heat, and alloying for 20-25 minutes;
G. adding 100 parts by weight of aluminum ingot for cooling, reducing the temperature to 840 ℃, and continuously introducing into a crucible of the intermediate frequency furnacePurity ≧ 99.999% nitrogen N2Refining for 6-8 minutes in a nitrogen state;
H. manually casting and testing the surface of the alloy ingot to have no bubbles and uniform fracture without segregation, which indicates that the alloy aluminum liquid meets the standard;
I. and starting the intermediate frequency furnace to 60 percent of power, and heating the alloy aluminum liquid to 900 ℃ to obtain AlSi30 intermediate alloy aluminum liquid.
Example 3:
a continuous casting production method of an AlSi30 intermediate alloy ingot comprises the following specific operation steps:
A. tipping a crucible of the intermediate frequency furnace, quickly injecting the AlSi30 intermediate alloy aluminum liquid prepared in the embodiment 2 into a transfer ladle, and introducing the alloy aluminum liquid into a small flow trough below the transfer ladle through a chute at the outlet of the transfer ladle;
B. starting the casting machine, controlling the speed of the casting machine to be 13-15 min/m, manually controlling the small chute to swing up and down, and distributing the alloy aluminum liquid into the casting machine ingot mould;
C. before the surface of the alloy aluminum liquid is solidified, carrying out slag scraping treatment on oxide skin on the surface of an ingot face;
D. the casting machine cools the alloy aluminum liquid to a position 6 m from the casting point, and when metal balls appear on the surface, the metal balls are processed by a scraper knife, and the surface is smooth and traceless;
E. and cooling and crystallizing the alloy aluminum liquid by using a casting machine, and then carrying out alignment by using an alignment table and stacking by using a mechanical arm to obtain the prepared AlSi30 intermediate alloy ingot.
Example 4:
a continuous casting production method of an AlSi30 intermediate alloy ingot comprises the following specific operation steps:
A. preparing AlSi30 alloy aluminum liquid by taking metallic silicon, electrolytic aluminum liquid and aluminum ingots as raw materials,
the index requirements of the metallic silicon are as follows: the Si content is more than or equal to 99.8 percent, and the Fe content is less than or equal to 0.30 percent;
the index requirements of the electrolytic aluminum liquid are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
the index requirements of the aluminum ingot are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
B. adding 600 parts by weight of electrolytic aluminum liquid into a crucible of an intermediate frequency furnace, starting 60% power, and raising the temperature to 760-780 ℃;
C. shoveling the slag on the crucible wall from top to bottom along the crucible wall by using a 1.5m crucible shovel maintained by titanium dioxide, then scattering a proper amount of slag removing agent, and fishing the slag;
D. the quality requirements of adding the metal silicon are as follows:
the quality requirement is as follows: the mass fraction of the metallic silicon is more than or equal to 99.8%, the metallic silicon is black and blocky, the granularity is 50-100 mm, and other impurities cannot be mixed;
E. after deslagging, adding metal silicon into a crucible of the intermediate frequency furnace for three times, adding 150 parts by weight of metal silicon for the first time, pressing the metal silicon into molten aluminum to be completely wrapped by a pressing shovel, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the second time, pressing the metal silicon into the aluminum liquid through a pressing shovel to be completely wrapped, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the third time, pressing the metal silicon into the aluminum liquid through a pressing shovel to completely wrap the aluminum liquid, and starting the heating power to 60% for heating;
F. after silicon is added for the third time, starting the intermediate frequency furnace with the power of 60% to heat the aluminum liquid to 900 ℃, adjusting the power of the intermediate frequency furnace to 30%, preserving the heat, and alloying for 20-25 minutes;
G. adding 100 parts by weight of aluminum ingot, cooling to 840 ℃, and continuously introducing nitrogen N with purity not less than 99.999% into a crucible of the intermediate frequency furnace2Refining for 6-8 minutes in a nitrogen state;
H. manually casting and testing the surface of the alloy ingot to have no bubbles and uniform fracture without segregation, which indicates that the alloy aluminum liquid meets the standard;
I. starting the intermediate frequency furnace to 60 percent of power, and heating the alloy aluminum liquid to 900 ℃ to obtain AlSi30 intermediate alloy aluminum liquid;
J. tipping a crucible of the intermediate frequency furnace, quickly injecting the prepared AlSi30 intermediate alloy aluminum liquid into a transfer ladle, and introducing the alloy aluminum liquid into a small flow trough below the transfer ladle through a chute at the outlet of the transfer ladle;
K. starting the casting machine, controlling the speed of the casting machine to be 13-15 min/m, manually controlling the small chute to swing up and down, and distributing the alloy aluminum liquid into the casting machine ingot mould;
l, before the surface of the alloy aluminum liquid is solidified, carrying out slag scraping treatment on oxide skin on the surface of the ingot face;
m, the casting machine cools the alloy aluminum liquid to a position 6M from the casting point, and when metal balls appear on the surface, the metal balls are processed by a scraper knife, so that the surface is smooth and traceless;
and N, cooling and crystallizing the alloy aluminum liquid by using a casting machine, and then carrying out alignment by using an alignment table and stacking by using a mechanical arm to obtain the prepared AlSi30 intermediate alloy ingot.
The AlSi30 intermediate alloy ingot produced by the manufacturing method adopts scientific and reasonable component proportion, intermediate frequency furnace heating and stirring, cooling casting and rapid cooling casting of a casting machine, so that the casting time is shortened, and meanwhile, the surface metal balls are timely treated in the production process, so that the AlSi30 intermediate alloy ingot has more compact internal structure, no inclusion and smooth and clean surface, is superior to the AlSi30 intermediate alloy ingot produced by other manufacturers, has high safety and is easy to popularize.
Claims (3)
1. A novel manufacturing process method of AlSi30 is characterized in that: the manufacturing process method comprises a preparation method of AlSi30 intermediate alloy aluminum liquid and a continuous casting production method of AlSi30 intermediate alloy ingots, wherein in a crucible of a 1-ton intermediate frequency furnace, the AlSi30 intermediate alloy aluminum liquid is prepared by taking metal silicon and electrolytic aluminum liquid as raw materials, and the AlSi30 intermediate alloy aluminum liquid has the index requirements that: the Si content is 28-32%, and the Fe content is less than or equal to 0.20%; and (3) tipping the intermediate frequency furnace, quickly injecting AlSi30 intermediate alloy molten aluminum into the tundish, introducing into a casting machine, and carrying out continuous casting production of AlSi30 intermediate alloy ingots.
2. The preparation method of AlSi30 intermediate alloy aluminum liquid as claimed in claim 1, which comprises the following specific operation steps:
A. preparing AlSi30 alloy aluminum liquid by taking metallic silicon, electrolytic aluminum liquid and aluminum ingots as raw materials,
the index requirements of the metallic silicon are as follows: the Si content is more than or equal to 99.8 percent, and the Fe content is less than or equal to 0.30 percent;
the index requirements of the electrolytic aluminum liquid are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
the index requirements of the aluminum ingot are as follows: the Al content is more than or equal to 99.7 percent, and the Fe content is less than or equal to 0.15 percent;
B. adding 600 parts by weight of electrolytic aluminum liquid into a crucible of an intermediate frequency furnace, starting 60% power, and raising the temperature to 760-780 ℃;
C. shoveling the slag on the crucible wall from top to bottom along the crucible wall by using a 1.5m crucible shovel maintained by titanium dioxide, then scattering a proper amount of slag removing agent, and fishing the slag;
D. the quality requirements of adding the metal silicon are as follows:
the quality requirement is as follows: the mass fraction of the metallic silicon is more than or equal to 99.8%, the metallic silicon is black and blocky, the granularity is 50-100 mm, and other impurities cannot be mixed;
E. after deslagging, adding metal silicon into a crucible of the intermediate frequency furnace for three times, adding 150 parts by weight of metal silicon for the first time, pressing the metal silicon into molten aluminum to be completely wrapped by a pressing shovel, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the second time, pressing the metal silicon into the aluminum liquid through a pressing shovel to be completely wrapped, starting heating power to 60%, and heating for 10-15 minutes to completely melt the metal silicon; adding 100 parts by weight of metal silicon for the third time, pressing the metal silicon into the aluminum liquid through a pressing shovel to completely wrap the aluminum liquid, and starting the heating power to 60% for heating;
F. after silicon is added for the third time, starting the intermediate frequency furnace with the power of 60% to heat the aluminum liquid to 900 ℃, adjusting the power of the intermediate frequency furnace to 30%, preserving the heat, and alloying for 20-25 minutes;
G. adding 100 parts by weight of aluminum ingot, cooling to 840 ℃, and continuously introducing nitrogen N with purity not less than 99.999% into a crucible of the intermediate frequency furnace2Refining for 6-8 minutes in a nitrogen state;
H. manually casting and testing the surface of the alloy ingot to have no bubbles and uniform fracture without segregation, which indicates that the alloy aluminum liquid meets the standard;
I. and starting the intermediate frequency furnace to 60 percent of power, and heating the alloy aluminum liquid to 900 ℃ to obtain AlSi30 intermediate alloy aluminum liquid.
3. A method of continuously casting an AlSi30 master alloy ingot as set forth in claim 1, comprising the steps of:
A. tipping a crucible of the intermediate frequency furnace, quickly injecting AlSi30 intermediate alloy aluminum liquid prepared in the claim 2 into a transfer ladle, and introducing the alloy aluminum liquid into a small flow trough below the transfer ladle through a chute at the outlet of the transfer ladle;
B. starting the casting machine, controlling the speed of the casting machine to be 13-15 min/m, manually controlling the small chute to swing up and down, and distributing the alloy aluminum liquid into the casting machine ingot mould;
C. before the surface of the alloy aluminum liquid is solidified, carrying out slag scraping treatment on oxide skin on the surface of an ingot face;
D. the casting machine cools the alloy aluminum liquid to a position 6 m from the casting point, and when metal balls appear on the surface, the metal balls are processed by a scraper knife, so that the surface is smooth and has no mark;
E. and cooling and crystallizing the alloy aluminum liquid by using a casting machine, and then carrying out alignment by using an alignment table and stacking by using a mechanical arm to obtain the prepared AlSi30 intermediate alloy ingot.
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