CN111455230B - High-performance trapezoidal aluminum alloy material and production method thereof - Google Patents
High-performance trapezoidal aluminum alloy material and production method thereof Download PDFInfo
- Publication number
- CN111455230B CN111455230B CN202010310692.5A CN202010310692A CN111455230B CN 111455230 B CN111455230 B CN 111455230B CN 202010310692 A CN202010310692 A CN 202010310692A CN 111455230 B CN111455230 B CN 111455230B
- Authority
- CN
- China
- Prior art keywords
- aluminum
- casting
- aluminum liquid
- cooling
- aluminum alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/066—Treatment of circulating aluminium, e.g. by filtration
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
- C22B9/023—By filtering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
- C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Continuous Casting (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a high-performance trapezoidal aluminum alloy material which comprises the following components in percentage by weight: 7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu0.4-0.45% of magnesium Mg0.1-0.15% of titanium Ti0.1-0.15%, less than 0.02% of total impurity content and the balance of aluminum. The production method comprises the following steps: adding a cold material with the same component in a proportion of 15-20% of the capacity of the smelting furnace, adding an electrolytic aluminum liquid for batching, performing electromagnetic stirring treatment to achieve uniform components of the aluminum liquid, sequentially adding alloy materials, obtaining a pure aluminum solution through refining, a degassing box and a filter box, performing balance regulation and control to achieve horizontal casting, matching the regulation and control amount of the aluminum liquid with the rotating speed of a casting machine, reasonably distributing a cooling mode, cooling water flow and pressure, forming an optimal state from liquid to crystallization in a crystallizer cooling area, and ensuring the grain size of the trapezoidal aluminum alloy. The alloy product has the advantages of uniform components, high strength, fine grain size, first-grade pinhole degree, low hydrogen content and less impurities, and comprehensively improves the mechanical property of the alloy product.
Description
The technical field is as follows:
the invention relates to a composition of a high-performance trapezoidal aluminum alloy material and a production method thereof, which are widely applied to the production of materials for automobile hubs, and the strength and the performance stability of products are effectively improved by refining, degassing and filtering and adopting a horizontal casting mode and an advanced cooling process of a Condenburg-Perpetz casting unit, so that the products have the advantages of bright surface, fine grain size, first-grade pinhole degree, low hydrogen content and the like.
Secondly, background art:
the cast aluminum alloy product used for the hub industry at present has the defects of more pinholes, uneven components and performance, loose interior and the like, and the unstable quality cannot reach the qualified industrial standard, so that the finished product has the defects of large crystal grains, more pinholes, more impurities and the like, and the strength and the service life of the hub are greatly reduced.
With the wide application of automobile hub 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 automobile hub products is rapidly developed, and the market demand is gradually expanded.
Thirdly, the invention content:
the technical problem to be solved by the invention is as follows: overcomes the defects of the prior production process, provides a high-performance trapezoidal aluminum alloy material with uniform components, compact internal structure, no inclusion, fine crystal grains, first-grade pinhole degree and no obvious agglomeration defect and a production method thereof, and meets the requirements of markets and enterprises.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a high-performance trapezoidal aluminum alloy material comprises the following components in percentage by weight: 7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu, 0.4-0.45% of magnesium Mg, 0.1-0.15% of titanium Ti, less than 0.02% of total impurity content and the balance of aluminum.
The production method of the high-performance trapezoidal aluminum alloy material comprises the following steps:
A. firstly, adding a cold material with the same component, wherein the addition amount is 15-20% of the capacity of the furnace, then adding an electrolytic aluminum liquid for batching, wherein the Fe content in the electrolytic aluminum liquid is less than or equal to 0.07%, and the Si content in the electrolytic aluminum liquid is less than or equal to 0.04%, starting electromagnetic stirring and simultaneously heating up, so that the cold material is melted to achieve a mixed melt with uniform components;
B. when the temperature reaches more than 750 ℃, scattering a certain amount of a slagging agent, starting electromagnetic stirring for 30-40 minutes, and then carrying out slagging-off treatment on the surface of the aluminum liquid;
C. 3303 metal silicon, aluminum-copper alloy, magnesium ingot, and titanium agent are added according to the mass ratio;
D. alloying the melt: controlling the temperature of the aluminum liquid to be 780 +/-30 ℃, and starting electromagnetic stirring for 30-40 minutes;
E. slag fishing: cleaning up dross on the surface of the aluminum liquid;
F. sampling and testing: samples are respectively taken at three different positions of a smelting furnace and analyzed by a spectral direct reading method;
G. component adjustment-material supplement or dilution, so that the chemical components of the raw materials meet the following requirements in percentage by weight: 7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu, 0.4-0.45% of magnesium Mg, 0.1-0.15% of titanium Ti, less than 0.02% of total impurity content and the balance of aluminum;
H. guiding the furnace: introducing the prepared aluminum liquid into a standing furnace, wherein the temperature of the introducing furnace is 760-775 ℃;
I. refining: adding a certain amount of refining agent, and refining for 35-40 minutes;
J. standing and deslagging: standing for 30-40 minutes after refining is finished, then cleaning aluminum slag on the surface of the aluminum liquid, and turning over the standing furnace to prepare casting;
K. degassing: the method comprises the following steps that aluminum liquid is subjected to a degassing process through a degassing box, inert gas enters a melt through a hollow shaft of a graphite rotor, the inert gas is dispersed and distributed in a fine bubble form at a small hole at the bottom of the rotor through the rotating speed of the rotor, hydrogen and oxidation slag inclusion in the melt are removed according to the partial pressure and surface adsorption principle, and the gas flow is 2-2.5 m for cultivation/h;
l, filtering: filtering and deslagging the casting aluminum liquid by adopting a 50-mesh filter plate;
m, casting: adopting a Condennius-Propetz casting machine, when aluminum liquid flows through a tundish and a small casting ladle, achieving horizontal casting through balance regulation, driving a crystallizer and a steel belt to form a closed cavity through a motor and power of a crystallization wheel, a tension wheel, a pressing wheel and an auxiliary tension wheel of a casting unit, wherein the regulation amount of the aluminum liquid is matched with the rotating speed of the casting machine, so that the cavity combining the crystallizer and the steel belt is filled with the aluminum liquid in the casting process, the quality of the trapezoidal aluminum alloy is ensured, and the casting temperature is 680-700 ℃;
n, cooling: the cooling capacity of the four areas of the inner side, the outer side and the two sides of the crystallization wheel is crescent, the cooling capacity of the four areas is regulated and controlled according to the thickness and the material of a heat transfer carrier, cooling water is in a fan shape to cool the crystallizer, the quality defects of loosening and shrinkage are avoided, the pressure of the cooling water is 300KPa, and the temperature is 30 ℃;
o, shearing: shearing the trapezoidal aluminum alloy in an automatic shearing area after the trapezoidal aluminum alloy is formed, and putting the trapezoidal aluminum alloy into bundles;
p, sampling of finished products: randomly taking two finished ingots, analyzing one ingot by adopting a spectrum direct reading method, and carrying out fracture tissue inspection on the other ingot;
q, product packaging: packaging the finished ingots meeting the requirements by adopting plastic steel belts;
and R, warehousing and leaving the finished ingot products meeting the requirements out of the factory.
In the step B, the addition amount of the slag removing agent is 0.2-0.5% of the mass of the mixed melt in the step A; in the step I, the adding amount of the refining agent is 0.5-0.8% of the mass of the aluminum liquid in the step H.
In the step M, the horizontal casting is that the aluminum liquid flows through the small casting ladle to achieve the effect of horizontally flowing into the crystallizer according to the design principle of the small casting ladle and the regulation and control of a balance, so that the scale impurities caused by fall are reduced from being drawn into the aluminum liquid; in the step N, the aluminum liquid is solidified in the crystallizer to form the trapezoidal aluminum alloy through cooling of cooling water of the casting unit, an ingot shaving device is installed at the outlet of the crystallizer to separate the trapezoidal aluminum alloy from the crystallizer, and the aluminum liquid in the crystallizer continuously forms the combination of solid and liquid surfaces through the outside cooling effect in the continuous flow process of the aluminum liquid, so that continuous casting is realized; according to the difference of the material and the size of the aluminum liquid contacting the crystallizer and the steel strip in the cooling area, the intensity of the cooling areas in the inner area, the outer area and the two side areas is adjusted, so that the trapezoidal aluminum alloy is uniformly cooled in the crystallization process, the phenomena of looseness, lockhole and the like are avoided, the temperature of the cooling water is controlled to be 30 ℃, the first 7 cooling nozzles of the four cooling areas in the inner area, the outer area and the two sides of the crystallizer are closed, the extreme cold phenomena of the first stage and the second stage in the crystallization transition period are avoided, the grain size of the trapezoidal aluminum alloy is ensured, the cooling amount in the other four areas is uniformly allocated, the four surface temperatures of the formed trapezoidal aluminum.
The high-performance trapezoidal aluminum alloy material produced by the invention has the following parameters:
7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu, 0.4-0.45% of magnesium Mg, 0.1-0.15% of titanium Ti, less than 0.02% of total impurity content and the balance of aluminum.
The product specification is as follows: cross-sectional area 3343 mm.
The casting mode is as follows: and (4) horizontal casting.
A cooling mode: the aluminum liquid flows into the crystallizer, and the four areas of the inner side, the outer side and the two sides of the crystallizer are uniformly cooled by soft water.
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, the pinhole degree is first grade, and the defects of inclusions and the like are avoided.
The high-performance trapezoidal aluminum alloy material produced by adopting a horizontal casting mode and an advanced cooling process of a Condennius-Propetz casting unit has the advantages of uniform components, high strength, fine grain size, first-grade pinhole degree, low hydrogen content and less impurities, and comprehensively improves the mechanical property of an alloy product.
The invention achieves the aluminum solution with uniform components by adopting electromagnetic stirring, and effectively removes hydrogen and impurities in the aluminum liquid by adopting a degassing box and filtering equipment in the production process, thereby achieving purer aluminum solution. According to the characteristics of the Condennius-Propetz casting machine, the pressure, the flow and the cooling mode of cooling water of a casting unit are controlled, and a trapezoidal aluminum alloy is formed through a crystallizer. The main technical indexes of the product are as follows: horizontal casting and uniform cooling of the four regions of the crystallizer to form trapezoidal aluminum alloy, wherein the surface of the product is required to be smooth and clean and has no flash, burr, slag inclusion, corrosion, oil stain and the like; fracture organization: the crystal grains are uniform and fine, the pinhole degree is first grade, the strength is uniform, and the defects of inclusions are avoided.
The invention can produce the following positive effects:
1. the smelting furnace has high production efficiency, the components are homogenized by electromagnetic stirring, molten aluminum is cleaner by deslagging and refining treatment of the molten aluminum, and the production efficiency can be improved.
2. The hydrogen content and impurities in the aluminum liquid are effectively reduced through online degassing and filtering links in the production process, so that the improvement of the internal quality of the product and the reduction of the pinhole degree and slag inclusion are guaranteed.
3. The casting unit utilizes the advanced production technology of a CONTINUUS-PROPERZI (Condenus-Propezis) casting machine, reduces new impurities caused by the fall of molten aluminum by adopting a horizontal casting method, reasonably adjusts the matching of cooling water pressure, temperature and speed, controls the formation of crystal nuclei by adjusting the cooling amount of different areas in the process of forming the trapezoidal aluminum alloy, achieves fine grain size, uniform strength, compact structure and bright surface, and is the optimal production method of the trapezoidal aluminum alloy material with high performance for the automobile hub.
4. The trapezoidal aluminum alloy material for the automobile hub produced by the production method disclosed by the invention has the advantages that the product quality and structure are more compact, no inclusion is generated, the performance is stable, the surface is smooth and clean, and the trapezoidal aluminum alloy material is superior to the aluminum alloy material for the automobile hub produced by other manufacturers and is specially used for producing high-end aluminum alloy materials for the automobile hub due to the adoption of reasonable component proportion, electromagnetic stirring and horizontal casting modes and the process capable of regulating and controlling the cooling amount.
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 high-performance trapezoidal aluminum alloy material comprises the following components in percentage by weight: 7.4 percent of silicon Si, less than or equal to 0.12 percent of iron Fe, 0.42 percent of copper Cu, 0.4 percent of magnesium Mg, 0.1 percent of titanium Ti, less than 0.02 percent of total impurity content and the balance of aluminum.
The production method of the high-performance trapezoidal aluminum alloy material comprises the following steps:
A. firstly, adding a cold material with the same component, wherein the addition amount is 15-20% of the capacity of the furnace, then adding an electrolytic aluminum liquid for batching, wherein the Fe content in the electrolytic aluminum liquid is less than or equal to 0.07%, and the Si content in the electrolytic aluminum liquid is less than or equal to 0.04%, starting electromagnetic stirring and simultaneously heating up, so that the cold material is melted to achieve a mixed melt with uniform components;
B. when the temperature reaches more than 750 ℃, scattering a certain amount of a slagging agent, starting electromagnetic stirring for 30-40 minutes, and then carrying out slagging-off treatment on the surface of the aluminum liquid;
C. 3303 metal silicon, aluminum-copper alloy, magnesium ingot, and titanium agent are added according to the mass ratio;
D. alloying the melt: controlling the temperature of the aluminum liquid to be 780 +/-30 ℃, and starting electromagnetic stirring for 30-40 minutes;
E. slag fishing: cleaning up dross on the surface of the aluminum liquid;
F. sampling and testing: samples are respectively taken at three different positions of a smelting furnace and analyzed by a spectral direct reading method;
G. component adjustment-material supplement or dilution, so that the chemical components of the raw materials meet the following requirements in percentage by weight: 7.4 percent of silicon Si, less than or equal to 0.12 percent of iron Fe, 0.42 percent of copper Cu, 0.4 percent of magnesium Mg, 0.1 percent of titanium Ti, less than 0.02 percent of total impurity content and the balance of aluminum;
H. guiding the furnace: introducing the prepared aluminum liquid into a standing furnace, wherein the temperature of the introducing furnace is 760-775 ℃;
I. refining: adding a certain amount of refining agent, and refining for 35-40 minutes;
J. standing and deslagging: standing for 30-40 minutes after refining is finished, then cleaning aluminum slag on the surface of the aluminum liquid, and turning over the standing furnace to prepare casting;
K. degassing: the method comprises the following steps that aluminum liquid is subjected to a degassing process through a degassing box, inert gas enters a melt through a hollow shaft of a graphite rotor, the inert gas is dispersed and distributed in a fine bubble form at a small hole at the bottom of the rotor through the rotating speed of the rotor, hydrogen and oxidation slag inclusion in the melt are removed according to the partial pressure and surface adsorption principle, and the gas flow is 2-2.5 m for cultivation/h;
l, filtering: filtering and deslagging the casting aluminum liquid by adopting a 50-mesh filter plate;
m, casting: adopting a Condennius-Propetz casting machine, when aluminum liquid flows through a tundish and a small casting ladle, achieving horizontal casting through balance regulation, driving a crystallizer and a steel belt to form a closed cavity through a motor and power of a crystallization wheel, a tension wheel, a pressing wheel and an auxiliary tension wheel of a casting unit, wherein the regulation amount of the aluminum liquid is matched with the rotating speed of the casting machine, so that the cavity combining the crystallizer and the steel belt is filled with the aluminum liquid in the casting process, the quality of the trapezoidal aluminum alloy is ensured, and the casting temperature is 680-700 ℃;
n, cooling: the cooling capacity of the four areas of the inner side, the outer side and the two sides of the crystallization wheel is crescent, the cooling capacity of the four areas is regulated and controlled according to the thickness and the material of a heat transfer carrier, cooling water is in a fan shape to cool the crystallizer, the quality defects of loosening and shrinkage are avoided, the pressure of the cooling water is 300KPa, and the temperature is 30 ℃;
o, shearing: shearing the trapezoidal aluminum alloy in an automatic shearing area after the trapezoidal aluminum alloy is formed, and putting the trapezoidal aluminum alloy into bundles;
p, sampling of finished products: randomly taking two finished ingots, analyzing one ingot by adopting a spectrum direct reading method, and carrying out fracture tissue inspection on the other ingot;
q, product packaging: packaging the finished ingots meeting the requirements by adopting plastic steel belts;
and R, warehousing and leaving the finished ingot products meeting the requirements out of the factory.
In the step B, the addition amount of the slag removing agent is 0.2-0.5% of the mass of the mixed melt in the step A; in the step I, the adding amount of the refining agent is 0.5-0.8% of the mass of the aluminum liquid in the step H.
In the step M, the horizontal casting is that the aluminum liquid flows through the small casting ladle to achieve the effect of horizontally flowing into the crystallizer according to the design principle of the small casting ladle and the regulation and control of a balance, so that the scale impurities caused by fall are reduced from being drawn into the aluminum liquid; in the step N, the aluminum liquid is solidified in the crystallizer to form the trapezoidal aluminum alloy through cooling of cooling water of the casting unit, an ingot shaving device is installed at the outlet of the crystallizer to separate the trapezoidal aluminum alloy from the crystallizer, and the aluminum liquid in the crystallizer continuously forms the combination of solid and liquid surfaces through the outside cooling effect in the continuous flow process of the aluminum liquid, so that continuous casting is realized; according to the difference of the material and the size of the aluminum liquid contacting the crystallizer and the steel strip in the cooling area, the intensity of the cooling areas in the inner area, the outer area and the two side areas is adjusted, so that the trapezoidal aluminum alloy is uniformly cooled in the crystallization process, the phenomena of looseness, lockhole and the like are avoided, the temperature of the cooling water is controlled to be 30 ℃, the first 7 cooling nozzles of the four cooling areas in the inner area, the outer area and the two sides of the crystallizer are closed, the extreme cold phenomena of the first stage and the second stage in the crystallization transition period are avoided, the grain size of the trapezoidal aluminum alloy is ensured, the cooling amount in the other four areas is uniformly allocated, the four surface temperatures of the formed trapezoidal aluminum.
The high-performance trapezoidal aluminum alloy material produced by the production method is applied to the production of the automobile hub, and the high-performance trapezoidal aluminum alloy material is more compact in internal structure, free of impurities and smooth and clean in surface due to the adoption of reasonable component proportion, electromagnetic stirring and horizontal casting modes and the adjustment of the cooling amount of 4 areas, is superior to aluminum alloy materials produced by other manufacturers and used in the automobile hub industry, and is specially used for the production of high-end aluminum alloy materials.
Example 2: the production method of the present example is substantially the same as that of example 1, and the same points are not repeated, except that: a high-performance trapezoidal aluminum alloy material comprises the following components in percentage by weight: 7.5 percent of silicon Si, less than or equal to 0.12 percent of iron Fe, 0.46 percent of copper Cu, 0.45 percent of magnesium Mg, 0.15 percent of titanium Ti, less than 0.02 percent of total impurity content and the balance of aluminum.
Example 3: the production method of the present example is substantially the same as that of example 1, and the same points are not repeated, except that: a high-performance trapezoidal aluminum alloy material comprises the following components in percentage by weight: 7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu, 0.4-0.45% of magnesium Mg, 0.1-0.15% of titanium Ti, less than 0.02% of total impurity content and the balance of aluminum.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A high-performance trapezoidal aluminum alloy material is characterized by comprising the following components in percentage by weight: 7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu, 0.4-0.45% of magnesium Mg, 0.1-0.15% of titanium Ti, less than 0.02% of total impurity content and the balance of aluminum;
the production method of the high-performance trapezoidal aluminum alloy material comprises the following steps:
A. firstly, adding a cold material with the same component, wherein the addition amount is 15-20% of the capacity of a smelting furnace, then adding an electrolytic aluminum liquid for batching, wherein Fe in the electrolytic aluminum liquid is less than or equal to 0.07%, and Si is less than or equal to 0.04%, starting electromagnetic stirring and simultaneously heating up, so that the cold material is melted to obtain a mixed solution with uniform components;
B. when the temperature reaches more than 750 ℃, scattering a slag removing agent, starting electromagnetic stirring for 30-40 minutes, and then carrying out slag removing treatment on the surface of the aluminum liquid, wherein the adding amount of the slag removing agent is 0.2-0.5% of the mass of the mixed molten liquid in the step A;
C. 3303 metal silicon, aluminum-copper alloy, magnesium ingot, and titanium agent are added according to the mass ratio;
D. alloying the melt: controlling the temperature of the aluminum liquid to be 780 +/-30 ℃, and starting electromagnetic stirring for 30-40 minutes;
E. slag fishing: cleaning up dross on the surface of the aluminum liquid;
F. sampling and testing: samples are respectively taken at three different positions of a smelting furnace and analyzed by a spectral direct reading method;
G. component adjustment-material supplement or dilution, so that the chemical components of the raw materials meet the following requirements in percentage by weight: 7.4-7.5% of silicon Si, less than or equal to 0.12% of iron Fe, 0.42-0.46% of copper Cu, 0.4-0.45% of magnesium Mg, 0.1-0.15% of titanium Ti, less than 0.02% of total impurity content and the balance of aluminum;
H. guiding the furnace: introducing the prepared aluminum liquid into a standing furnace, wherein the temperature of the introducing furnace is 760-775 ℃;
I. refining: adding a refining agent for 35-40 minutes, wherein the adding amount of the refining agent is 0.5-0.8% of the mass of the molten aluminum in the step H;
J. standing and deslagging: standing for 30-40 minutes after refining is finished, then cleaning aluminum slag on the surface of the aluminum liquid, and turning over the standing furnace to prepare casting;
K. degassing: the method comprises the following steps that aluminum liquid is subjected to a degassing process through a degassing box, inert gas enters a melt through a hollow shaft of a graphite rotor, the inert gas is dispersed and distributed in a fine bubble form at a small hole at the bottom of the rotor through the rotating speed of the rotor, hydrogen and oxidation slag inclusion in the melt are removed according to the partial pressure and surface adsorption principle, and the gas flow is 2-2.5 m for cultivation/h;
l, filtering: filtering and deslagging the casting aluminum liquid by adopting a 50-mesh filter plate;
m, casting: adopting a Condennius-Propetz casting machine, when aluminum liquid flows through a tundish and a small casting ladle, achieving horizontal casting through balance regulation, driving a crystallizer and a steel belt to form a closed cavity through a motor and power of a crystallization wheel, a tension wheel, a pressing wheel and an auxiliary tension wheel of a casting unit, wherein the regulation amount of the aluminum liquid is matched with the rotating speed of the casting machine, so that the cavity combining the crystallizer and the steel belt is filled with the aluminum liquid in the casting process, the quality of the trapezoidal aluminum alloy is ensured, and the casting temperature is 680-700 ℃;
n, cooling: the cooling capacity of the four areas of the inner side, the outer side and the two sides of the crystallization wheel is crescent, the cooling capacity of the four areas is regulated and controlled according to the thickness and the material of a heat transfer carrier, cooling water is in a fan shape to cool the crystallizer, the quality defects of loosening and shrinkage are avoided, the pressure of the cooling water is 300KPa, and the temperature is 30 ℃;
o, shearing: shearing the trapezoidal aluminum alloy in an automatic shearing area after the trapezoidal aluminum alloy is formed, and putting the trapezoidal aluminum alloy into bundles;
p, sampling of finished products: randomly taking two finished ingots, analyzing one ingot by adopting a spectrum self-reading method, and carrying out fracture tissue inspection on the other ingot;
q, product packaging: packaging the finished ingots meeting the requirements by adopting plastic steel belts;
and R, warehousing and leaving the finished ingot products meeting the requirements out of the factory.
2. The high performance trapezoidal aluminum alloy of claim 1, wherein: in the step M, the horizontal casting is that the aluminum liquid flows through the small casting ladle to achieve the effect of horizontally flowing into the crystallizer according to the design principle of the small casting ladle and the regulation and control of a balance, so that the scale impurities caused by fall are reduced from being drawn into the aluminum liquid; in the step N, the aluminum liquid is solidified in the crystallizer to form the trapezoidal aluminum alloy through cooling of cooling water of the casting unit, an ingot shaving device is installed at the outlet of the crystallizer to separate the trapezoidal aluminum alloy from the crystallizer, and the aluminum liquid in the crystallizer continuously forms the combination of solid and liquid surfaces through the outside cooling effect in the continuous flow process of the aluminum liquid, so that continuous casting is realized; according to the difference of the material and the size of the aluminum liquid contacting the crystallizer and the steel strip in the cooling area, the intensity of the cooling areas in the inner area, the outer area and the two side areas is adjusted, so that the trapezoidal aluminum alloy is uniformly cooled in the crystallization process, the phenomena of looseness, lockhole and the like are avoided, the temperature of the cooling water is controlled to be 30 ℃, the first 7 cooling nozzles of the four cooling areas in the inner area, the outer area and the two sides of the crystallizer are closed, the extreme cold phenomena of the first stage and the second stage in the crystallization transition period are avoided, the grain size of the trapezoidal aluminum alloy is ensured, the cooling amount in the other four areas is uniformly allocated, the four surface temperatures of the formed trapezoidal aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310692.5A CN111455230B (en) | 2020-04-20 | 2020-04-20 | High-performance trapezoidal aluminum alloy material and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310692.5A CN111455230B (en) | 2020-04-20 | 2020-04-20 | High-performance trapezoidal aluminum alloy material and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111455230A CN111455230A (en) | 2020-07-28 |
| CN111455230B true CN111455230B (en) | 2021-05-11 |
Family
ID=71675484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010310692.5A Active CN111455230B (en) | 2020-04-20 | 2020-04-20 | High-performance trapezoidal aluminum alloy material and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111455230B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743044A (en) * | 2020-12-29 | 2021-05-04 | 上海蓝铸特种合金材料有限公司 | Precision casting method of ultra-fine grain size high-temperature alloy impeller |
| CN115627373A (en) * | 2022-09-08 | 2023-01-20 | 南通众福新材料科技有限公司 | Production process of high-performance aluminum alloy material |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07216486A (en) * | 1994-01-26 | 1995-08-15 | Mitsubishi Alum Co Ltd | Aluminum alloy for squeeze casting |
| JPH07242975A (en) * | 1994-03-03 | 1995-09-19 | Hitachi Metals Ltd | Aluminum alloy casting excellent in airtightness |
| JPH1036933A (en) * | 1996-07-25 | 1998-02-10 | Furukawa Electric Co Ltd:The | Cast cable parts |
| CN2381418Y (en) * | 1999-07-22 | 2000-06-07 | 鼎天科技股份有限公司 | Four-wheel continuous casting apparatus |
| CN101791684A (en) * | 2010-03-16 | 2010-08-04 | 云南铝业股份有限公司 | Method and device for producing A356 aluminum alloy by belt casting |
| CN102294447A (en) * | 2010-06-22 | 2011-12-28 | 李言聪 | Belt casting machine for circular blank casting wheel |
| CN102303057A (en) * | 2011-09-19 | 2012-01-04 | 大连交通大学 | Continuous casting and continuous extrusion device and production method for metal |
| CN203956038U (en) * | 2014-08-04 | 2014-11-26 | 伊东新(德阳)线缆设备有限公司 | Four-wheel-type horizontal continuity casting machine |
| CN106480342A (en) * | 2016-11-22 | 2017-03-08 | 河南中孚铝合金有限公司 | A kind of Aluminum alloy pole material with heat-resistant quality and its production method |
| CN108085545A (en) * | 2017-12-28 | 2018-05-29 | 河南中孚铝合金有限公司 | Computer hard disc actuating arm aluminium alloy round cast ingot and its production method |
| CN110923515A (en) * | 2019-12-11 | 2020-03-27 | 河南中孚技术中心有限公司 | Aluminum alloy material with grain refinement characteristic and production method thereof |
-
2020
- 2020-04-20 CN CN202010310692.5A patent/CN111455230B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07216486A (en) * | 1994-01-26 | 1995-08-15 | Mitsubishi Alum Co Ltd | Aluminum alloy for squeeze casting |
| JPH07242975A (en) * | 1994-03-03 | 1995-09-19 | Hitachi Metals Ltd | Aluminum alloy casting excellent in airtightness |
| JPH1036933A (en) * | 1996-07-25 | 1998-02-10 | Furukawa Electric Co Ltd:The | Cast cable parts |
| CN2381418Y (en) * | 1999-07-22 | 2000-06-07 | 鼎天科技股份有限公司 | Four-wheel continuous casting apparatus |
| CN101791684A (en) * | 2010-03-16 | 2010-08-04 | 云南铝业股份有限公司 | Method and device for producing A356 aluminum alloy by belt casting |
| CN102294447A (en) * | 2010-06-22 | 2011-12-28 | 李言聪 | Belt casting machine for circular blank casting wheel |
| CN102303057A (en) * | 2011-09-19 | 2012-01-04 | 大连交通大学 | Continuous casting and continuous extrusion device and production method for metal |
| CN203956038U (en) * | 2014-08-04 | 2014-11-26 | 伊东新(德阳)线缆设备有限公司 | Four-wheel-type horizontal continuity casting machine |
| CN106480342A (en) * | 2016-11-22 | 2017-03-08 | 河南中孚铝合金有限公司 | A kind of Aluminum alloy pole material with heat-resistant quality and its production method |
| CN108085545A (en) * | 2017-12-28 | 2018-05-29 | 河南中孚铝合金有限公司 | Computer hard disc actuating arm aluminium alloy round cast ingot and its production method |
| CN110923515A (en) * | 2019-12-11 | 2020-03-27 | 河南中孚技术中心有限公司 | Aluminum alloy material with grain refinement characteristic and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111455230A (en) | 2020-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103146961B (en) | Alloy ingot for automotive hub and production method thereof | |
| CN111455230B (en) | High-performance trapezoidal aluminum alloy material and production method thereof | |
| JP3378342B2 (en) | Aluminum casting alloy excellent in wear resistance and method for producing the same | |
| MXPA06011720A (en) | Master alloy for use in modifying copper alloy and casting method using the same. | |
| CN109371295B (en) | Al-Mn alloy with high Mn content and preparation method thereof | |
| CN112831697A (en) | High-strength coarse-grain-free aluminum alloy and preparation method and application thereof | |
| CN1253593C (en) | Production technology of large diameter aluminium alloy round cast ingot | |
| CN112831692B (en) | Aluminum-manganese alloy strip and preparation method thereof | |
| CN113649415A (en) | Preparation process of high-strength aluminum alloy welding wire | |
| CN115074584B (en) | Die-casting aluminum alloy and preparation method thereof | |
| CN108411167B (en) | Process for casting ingot for high-quality car engine by utilizing regenerated waste aluminum material | |
| CN105238971B (en) | The preparation method of aluminium alloy and alloy product | |
| CN109234588A (en) | A kind of high strength easy-to-cut aluminum alloy and preparation method thereof of environmental protection | |
| JP2000001731A (en) | Hypereutectic aluminum-silicon alloy diecast member and its production | |
| CN112280985B (en) | Method for manufacturing high-strength and high-toughness aluminum alloy by adopting recycled aluminum | |
| CN111575533A (en) | Zinc-aluminum alloy round ingot, preparation method and application thereof, and zinc-aluminum alloy material | |
| JPH0517845A (en) | Hypereutectic aluminum-silicon alloy powder and production thereof | |
| CN108779521B (en) | Aluminum alloy for low-pressure casting | |
| CN112030046A (en) | Aluminum alloy material for manufacturing mobile phone frame | |
| Samuel et al. | Intermetallics formation, hardness and toughness of A413. 1 type alloys: role of melt and aging treatments | |
| CN115927926B (en) | High-plasticity aluminum alloy for vehicle body structure and preparation method thereof | |
| TWI542712B (en) | Copper alloy modified with the parent alloy, and the use of its casting method | |
| WO2023084867A1 (en) | Aluminum alloy ingot, aluminum alloy material, and method for manufacturing aluminum alloy material | |
| CN115679160A (en) | Heat-treatment-free aluminum alloy material for continuous extrusion flattening tube and preparation method thereof | |
| KR100573781B1 (en) | Flux for the Melting Treatment Method of Copper and Copper Alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |