CN110923515A - Aluminum alloy material with grain refinement characteristic and production method thereof - Google Patents
Aluminum alloy material with grain refinement characteristic and production method thereof Download PDFInfo
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- CN110923515A CN110923515A CN201911267652.0A CN201911267652A CN110923515A CN 110923515 A CN110923515 A CN 110923515A CN 201911267652 A CN201911267652 A CN 201911267652A CN 110923515 A CN110923515 A CN 110923515A
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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
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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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
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
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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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Abstract
The invention discloses an aluminum alloy material with grain refinement characteristic, which comprises the following components in percentage by weight: less than or equal to 0.25 percent of silicon Si, less than or equal to 0.30 percent of iron Fe, less than or equal to 0.05 percent of vanadium V, less than or equal to 0.15 percent of zirconium Cr, less than or equal to 0.15 percent of nickel Ni, less than or equal to 14-16 percent of titanium Ti, less than 0.10 percent of other single impurities, less than 0.1 percent of total impurity content, and the balance of aluminum. The production method comprises the following steps: adding solid cold materials and electrolytic aluminum liquid for proportioning, heating and melting at proper temperature, starting the intermediate frequency furnace to keep the temperature uniform and the components uniform, slowly scattering titanium chips on the surface of the aluminum liquid, and pressing the titanium chips below the surface of the aluminum liquid by using a rake; closing the current, standing and alloying for 2 hours; removing impurities in the molten aluminum, controlling the casting temperature to be 790-810 ℃, and producing the grain refining meeting the requirementsA material. The product obtained by the invention has stable and uniform components, compact internal structure and TiAl3No obvious agglomeration, smooth and clean surface and no impurities, and is the best production method for producing the aluminum alloy material with the grain refining characteristic.
Description
The technical field is as follows:
the invention relates to a composition of an aluminum alloy material with grain refinement characteristic and a production method thereof
The method is widely applied to refiner materials for producing aluminum alloy products, improves the organization structure of the aluminum alloy products and improves the mechanical properties of the products.
Secondly, background art:
the aluminum alloy material with the grain refining characteristic is a necessary grain refiner material for producing the aluminum alloy material, and the material mainly has the effects of obtaining a relatively pure aluminum solution, obtaining a relatively fine grain structure and improving the mechanical property of an alloy product in the production process of the aluminum alloy material. The product is mainly characterized in that titanium chips and aluminum liquid are fully dissolved by adopting an intermediate frequency furnace to obtain an aluminum solution with uniform components, and an alloy ingot is produced by adopting a manual pouring mode according to the alloy characteristics. The main technical indexes of the product are as follows: the titanium Ti content is 14-16%, and the product surface is required to be smooth and clean and has no flash, burr, slag inclusion, corrosion, oil stain and the like; fracture organization: the grains are uniform and fine, TiAl3No obvious agglomeration, no inclusion and other defects.
At present, the aluminum-titanium intermediate alloy is used as the most widely applied and mature aluminum alloy refiner, can effectively improve the internal structure of the aluminum alloy and enhance the performances of ductility, hardness, strength, impact resistance and the like, along with the wide application of aluminum alloy products, particularly the continuous emergence of high-end aluminum alloy new materials, higher requirements are put forward on the quality of the products, the application of high-quality aluminum intermediate alloy ingot products is rapidly developed, the market demand is gradually expanded, and the aluminum-titanium intermediate alloy refiner has better market prospect.
Thirdly, the invention content:
the technical problem to be solved by the invention is as follows: overcomes the defects of the prior production process, and provides a novel high-strength high-toughness high-Putty and TiAl3The aluminum alloy material with grain refining characteristic and no obvious agglomeration defect and the production method thereof meet the requirements of markets and enterprises.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an aluminum alloy material with grain refinement characteristic comprises the following components in percentage by weight: less than or equal to 0.20 percent of silicon Si, less than or equal to 0.25 percent of iron Fe, less than or equal to 0.05 percent of vanadium V, less than or equal to 0.15 percent of zirconium Cr, less than or equal to 0.15 percent of nickel Ni, less than or equal to 14-16 percent of titanium Ti, less than 0.10 percent of other single impurities, less than 0.10 percent of total impurity content, and the balance of aluminum.
The aluminum alloy material with the grain refining characteristic is produced by the following method:
A. firstly adding 0.05 ton of pure aluminum ingot solid cold burden, then adding an electrolytic aluminum liquid for batching, wherein the electrolytic aluminum liquid accounts for 90-95 wt% of the batching, the pure aluminum ingot solid cold burden accounts for 5-10 wt% of the batching, the iron content in the electrolytic aluminum liquid is less than or equal to 0.20%, and the Si content is less than or equal to 0.10%, starting an intermediate frequency furnace for heating and stirring, so that the pure aluminum ingot solid cold burden is melted and the components are uniform, and obtaining a mixed aluminum liquid;
B. 1kg of slag removing agent is scattered into the mixed aluminum liquid, and then slag is removed;
C. the quality requirement and the adding amount of the added titanium chips are calculated as follows:
the quality requirement is as follows: titanium requires no oil stain on the surface;
the calculation method comprises the following steps: calculating the addition amount of titanium chips according to the content of 15-16% of the internal control range of titanium (the weight of the titanium chips = the weight of the original aluminum 0.105);
D. alloying the melt: controlling the temperature of the aluminum liquid to be 850 +/-30 ℃, starting the intermediate frequency furnace for 30% of power, slowly scattering titanium chips on the surface of the aluminum liquid, and pressing the titanium chips below the surface of the aluminum liquid by using a rake;
E. closing the current, standing and alloying for 2 hours; after standing for 1 hour, testing the melting condition of the Ti chips by using a stirring rake at the bottom, and then testing for 1 time every 20 minutes;
F. slag fishing: fishing out the scum on the surface of the aluminum liquid;
G. sampling and testing: analyzing the components thereof using chemical analysis methods;
H. casting: the casting temperature is 790-810 ℃, the intermediate frequency furnace is started to carry out 30% power heat preservation, and when the aluminum liquid slightly rolls, manual casting is carried out; the thickness of each aluminum ingot is 4 +/-0.5 cm; after pouring of a single ingot is finished, slag is immediately removed from the surface of the ingot;
J. sampling a finished product: randomly taking two finished ingots, wherein one ingot is subjected to product analysis by a chemical analysis method, and the other ingot is subjected to fracture tissue inspection of the product;
K. and (3) product packaging: packaging by adopting a plastic steel belt;
and L, warehousing and leaving the products meeting the requirements out of the factory.
In the step B, the slag removing agent is a mixture of potassium chloride, sodium chloride and sodium fluoroaluminate, wherein the weight percentage of the sodium chloride is 25-45%, the weight percentage of the potassium chloride is 30-50%, and the balance is the sodium fluoroaluminate.
The parameters of the aluminum alloy finished product with the grain refining characteristic produced by the invention are as follows:
alloy components: less than or equal to 0.25 percent of silicon Si, less than or equal to 0.30 percent of iron Fe, less than or equal to 0.05 percent of vanadium V, less than or equal to 0.15 percent of zirconium Cr, less than or equal to 0.15 percent of nickel Ni, less than or equal to 14-16 percent of titanium Ti, less than 0.10 percent of other single impurities, less than 0.1 percent of total impurity content,
the product specification is as follows: 415 x 220 x 38 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 grains are uniform and fine, TiAl3No obvious agglomeration, no inclusion and other defects.
The invention can produce the following positive effects:
1. the intermediate frequency furnace is adopted to produce the aluminum-titanium alloy, has the advantages of high temperature rise speed, full dissolution reaction of titanium chips, uniform components, high actual yield and the like, and can obviously reduce the production cost.
2. Before production, the temperature of the aluminum melt is reduced, and low-temperature casting is adopted, so that hydrogen in the aluminum liquid is removed, metal burning loss is reduced, the surface quality of the product is improved, and the like.
3. The aluminum alloy material with the grain refinement characteristic produced by the invention has stable and uniform components, compact structure and smooth and clean surface, can completely meet the use requirements of producing high-end aluminum processing products on the grain refinement effect and improving the mechanical property of the products, and is the optimal production method of the aluminum alloy material with the grain refinement characteristic.
4. The aluminum alloy refined material produced by the production method adopts reasonable component proportion, intermediate frequency furnace heating and stirring, low temperature casting (waffle ingot) and other production processes, so that the internal structure of the aluminum alloy refined material is more compact, has no inclusion and smooth and clean surface, is superior to the aluminum alloy material with grain refinement property produced by other manufacturers, and is specially used for producing high-end aluminum alloy materials.
Fourthly, the specific implementation mode:
example (b): an aluminum alloy material with grain refinement characteristic comprises the following components in percentage by weight: less than or equal to 0.25 percent of silicon Si, less than or equal to 0.30 percent of iron Fe, less than or equal to 0.05 percent of vanadium V, less than or equal to 0.15 percent of zirconium Cr, less than or equal to 0.15 percent of nickel Ni, less than or equal to 14-16 percent of titanium Ti, less than 0.10 percent of other single impurities, less than 0.1 percent of total impurity content, and the balance of aluminum.
The aluminum alloy material with the grain refining characteristic is produced by the following method:
A. firstly adding 0.05 ton of pure aluminum ingot solid cold burden, then adding an electrolytic aluminum liquid for batching, wherein the electrolytic aluminum liquid accounts for 90-95 wt% of the batching, the pure aluminum ingot solid cold burden accounts for 5-10 wt% of the batching, the iron content in the electrolytic aluminum liquid is less than or equal to 0.20%, and the Si content is less than or equal to 0.10%, starting an intermediate frequency furnace for heating and stirring, so that the pure aluminum ingot solid cold burden is melted and the components are uniform, and obtaining a mixed aluminum liquid;
B. 1kg of slag removing agent is scattered into the mixed aluminum liquid, and then slag is removed;
C. the quality requirement and the adding amount of the added titanium chips are calculated as follows:
the quality requirement is as follows: titanium requires no oil stain on the surface;
the calculation method comprises the following steps: calculating the addition amount of titanium chips according to the content of 15-16% of the internal control range of titanium (the weight of the titanium chips = the weight of the original aluminum 0.105);
D. alloying the melt: controlling the temperature of the aluminum liquid to be 850 +/-30 ℃, starting the intermediate frequency furnace for 30% of power, slowly scattering titanium chips on the surface of the aluminum liquid, and pressing the titanium chips below the surface of the aluminum liquid by using a rake;
E. closing the current, standing and alloying for 2 hours; after standing for 1 hour, testing the melting condition of the Ti chips by using a stirring rake at the bottom, and then testing for 1 time every 20 minutes;
F. slag fishing: fishing out the scum on the surface of the aluminum liquid;
G. sampling and testing: analyzing the components thereof using chemical analysis methods;
H. casting: the casting temperature is 790-810 ℃, the intermediate frequency furnace is started to carry out 30% power heat preservation, and when the aluminum liquid slightly rolls, manual casting is carried out; the thickness of each aluminum ingot is 4 +/-0.5 cm; after pouring of a single ingot is finished, slag is immediately removed from the surface of the ingot;
J. sampling a finished product: randomly taking two finished ingots, wherein one ingot is subjected to product analysis by a chemical analysis method, and the other ingot is subjected to fracture tissue inspection of the product;
K. and (3) product packaging: packaging by adopting a plastic steel belt;
and L, warehousing and leaving the products meeting the requirements out of the factory.
In the step B, the slag removing agent is a mixture of potassium chloride, sodium chloride and sodium fluoroaluminate, wherein the weight percentage of the sodium chloride is 25-45%, the weight percentage of the potassium chloride is 30-50%, and the balance is the sodium fluoroaluminate.
The aluminum alloy refined material produced by the production method adopts reasonable component proportion, intermediate frequency furnace heating and stirring, low temperature casting (waffle ingot) and other production processes, so that the internal structure of the aluminum alloy refined material is more compact, has no inclusion and smooth and clean surface, is superior to the aluminum alloy material with grain refinement characteristics produced by other manufacturers, and is specially used for producing high-end aluminum alloy materials.
Claims (3)
1. An aluminum alloy material with grain refinement characteristics, which is characterized in that: the material comprises the following components in percentage by weight: less than or equal to 0.20 percent of silicon Si, less than or equal to 0.25 percent of iron Fe, less than or equal to 0.05 percent of vanadium V, less than or equal to 0.15 percent of zirconium Cr, less than or equal to 0.15 percent of nickel Ni, less than or equal to 14-16 percent of titanium Ti, less than 0.10 percent of other single impurities, less than 0.10 percent of total impurity content, and the balance of aluminum.
2. The aluminum alloy material with grain refining property as set forth in claim 1, which is produced by a method comprising:
A. firstly adding 0.05 ton of pure aluminum ingot solid cold burden, then adding an electrolytic aluminum liquid for batching, wherein the electrolytic aluminum liquid accounts for 90-95 wt% of the batching, the pure aluminum ingot solid cold burden accounts for 5-10 wt% of the batching, the iron content in the electrolytic aluminum liquid is less than or equal to 0.20%, and the Si content is less than or equal to 0.10%, starting an intermediate frequency furnace for heating and stirring, so that the pure aluminum ingot solid cold burden is melted and the components are uniform, and obtaining a mixed aluminum liquid;
B. 1kg of slag removing agent is scattered into the mixed aluminum liquid, and then slag is removed;
C. the quality requirement and the adding amount of the added titanium chips are calculated as follows:
the quality requirement is as follows: titanium requires no oil stain on the surface;
the calculation method comprises the following steps: calculating the addition amount of titanium chips according to the content of 15-16% of the internal control range of titanium (the weight of the titanium chips = the weight of the original aluminum 0.105);
D. alloying the melt: controlling the temperature of the aluminum liquid to be 850 +/-30 ℃, starting the intermediate frequency furnace for 30% of power, slowly scattering titanium chips on the surface of the aluminum liquid, and pressing the titanium chips below the surface of the aluminum liquid by using a rake;
E. closing the current, standing and alloying for 2 hours; after standing for 1 hour, testing the melting condition of the Ti chips by using a stirring rake at the bottom, and then testing for 1 time every 20 minutes;
F. slag fishing: fishing out the scum on the surface of the aluminum liquid;
G. sampling and testing: analyzing the components thereof using chemical analysis methods;
H. casting: the casting temperature is 790-810 ℃, the intermediate frequency furnace is started to carry out 30% power heat preservation, and when the aluminum liquid slightly rolls, manual casting is carried out; the thickness of each aluminum ingot is 4 +/-0.5 cm; after pouring of a single ingot is finished, slag is immediately removed from the surface of the ingot;
J. sampling a finished product: randomly taking two finished ingots, wherein one ingot is subjected to product analysis by a chemical analysis method, and the other ingot is subjected to fracture tissue inspection of the product;
K. and (3) product packaging: packaging by adopting a plastic steel belt;
and L, warehousing and leaving the products meeting the requirements out of the factory.
3. The production method of an aluminum alloy material having grain refining characteristics as set forth in claim 2, wherein: in the step B, the slag removing agent is a mixture of potassium chloride, sodium chloride and sodium fluoroaluminate, wherein the weight percentage of the sodium chloride is 25-45%, the weight percentage of the potassium chloride is 30-50%, and the balance is the sodium fluoroaluminate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455230A (en) * | 2020-04-20 | 2020-07-28 | 河南中孚技术中心有限公司 | High-performance trapezoidal aluminum alloy material and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364423A (en) * | 1989-08-02 | 1991-03-19 | Hitachi Metals Ltd | Method for melting intermetallic compound ti-al-base alloy |
| CN109778020A (en) * | 2019-03-11 | 2019-05-21 | 江苏华企铝业科技股份有限公司 | The high-densit aluminum titanium alloy ingot of high-purity and its manufacturing method |
-
2019
- 2019-12-11 CN CN201911267652.0A patent/CN110923515A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364423A (en) * | 1989-08-02 | 1991-03-19 | Hitachi Metals Ltd | Method for melting intermetallic compound ti-al-base alloy |
| CN109778020A (en) * | 2019-03-11 | 2019-05-21 | 江苏华企铝业科技股份有限公司 | The high-densit aluminum titanium alloy ingot of high-purity and its manufacturing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455230A (en) * | 2020-04-20 | 2020-07-28 | 河南中孚技术中心有限公司 | High-performance trapezoidal aluminum alloy material and production method thereof |
| CN111455230B (en) * | 2020-04-20 | 2021-05-11 | 河南中孚技术中心有限公司 | High-performance trapezoidal aluminum alloy material and production method thereof |
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