CN112126870A - Forming and preparing integrated technology of high-strength high-toughness cast aluminum alloy material - Google Patents
Forming and preparing integrated technology of high-strength high-toughness cast aluminum alloy material Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
- C22C47/12—Infiltration or casting under mechanical pressure
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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
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
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- C22C49/06—Aluminium
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Abstract
The invention provides a forming and preparing integrated technology of a high-strength high-toughness cast aluminum alloy material, which comprises the following steps: preparing an aluminum alloy material, melting the aluminum alloy material, performing primary liquid die forging, preparing a reinforcing layer material, die casting the reinforcing layer, performing secondary liquid die forging and processing a material finished product; the invention strictly controls the flows of liquid forging specific pressure, pressurization starting temperature, pressure maintaining time, mold preheating temperature, liquid metal material pouring temperature, mold lubrication and the like by a liquid forging technology, and is matched with a semi-solid forming technology to pressurize when liquid metal material solid and liquid coexist, utilizes the characteristic of metal in transition from liquid to solid or solid to liquid, integrates the advantages of solidification processing and plastic processing, has small deformation resistance, ensures that metal is crystallized and solidified under pressure and forcibly eliminates shrinkage cavity and shrinkage porosity formed by solidification shrinkage, so as to obtain the material without casting defects.
Description
Technical Field
The invention relates to the technical field of aluminum alloy material preparation, in particular to a forming and preparation integrated technology of a high-strength high-toughness cast aluminum alloy material.
Background
Aluminum alloy is a non-ferrous metal structural material which is most widely applied in industry, and is widely applied in aviation, aerospace, automobile, mechanical manufacturing, ships and chemical industry, the rapid development of industrial economy has increased the demand on aluminum alloy welding structural parts, and the research on the weldability of the aluminum alloy is also deepened;
in the field of automobiles, aluminum alloy materials are needed for suspension system parts, heat consumption of the suspension system parts is high, the filling distance and the feeding distance of the materials are long in the preparation process, the materials cannot be homogenized, and pores and shrinkage cavities are easily generated in the materials, so that the strength and toughness of the materials are insufficient.
Disclosure of Invention
Aiming at the problems, the invention provides a forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material, which strictly controls the flows of liquid forging specific pressure, pressurization starting temperature, pressure maintaining time, mold preheating temperature, liquid metal material pouring temperature, mold lubrication and the like, combines the semi-solid forming technology, integrates the advantages of solidification processing and plastic processing, enables the metal to be crystallized and solidified under pressure and forcibly eliminates shrinkage cavity and shrinkage porosity formed by solidification shrinkage, so as to obtain the material without casting defects.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: the forming and preparation integrated technology of the high-strength high-toughness cast aluminum alloy material comprises the following steps:
the method comprises the following steps: preparing an aluminum alloy material
Preparing the materials of the aluminum alloy base material according to the mass ratio: the preparation method comprises the following steps of screening and impurity removing aluminum powder, tin powder, copper powder, vanadium powder, 5-8 parts of nickel powder, 6-8 parts of magnesium powder, 10-15 parts of silicon powder, 5-7 parts of zinc powder, 3-5 parts of titanium powder, 1-3 parts of manganese powder, 1-3 parts of lithium powder, 2-4 parts of strontium powder, 2-4 parts of cobalt powder and 6-11 parts of magnetic powder, carrying out low-temperature ball milling and crushing, then carrying out mixing stirring, adding rare earth elements and magnetic powder, starting an ultrasonic generator, carrying out ultrasonic dispersion, and obtaining a mixture after homogenizing and dispersing the internal materials;
step two: molten aluminum alloy material
Putting the mixture into a smelting furnace, adjusting the temperature in the smelting furnace to 700-;
step three: first liquid forging
Cooling the liquid metal material by 60-70 ℃ again, starting a die casting machine when solid and liquid of the liquid metal material coexist, pressing the die cavity of the die, controlling the liquid forging specific pressure to be 80-120MPa, filling the liquid metal material into the bottom in the die cavity, controlling the temperature during pressing to be 550-600 ℃, then maintaining the pressure for 30-45s, and stopping heating and pressing after the pressure is maintained, so as to obtain the aluminum alloy solidified metal layer after plastic deformation;
step four: preparation of the reinforcing layer Material
Preparing materials of the reinforcing layer according to the mass ratio: 30-50 parts of modified phenolic resin, 10-12 parts of titanium dioxide, 2-4 parts of barium sulfate powder, 5-8 parts of curing agent, 8-10 parts of zinc oxide, 40-70 parts of PBT resin, 10-15 parts of glass fiber, 1-1.5 parts of heat stabilizer, 0.4-0.7 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 5-10 parts of nano master batch, 5-9 parts of toughening agent and 3-10 parts of calcium stearate, mixing and stirring the modified phenolic resin, the glass fiber and the barium sulfate powder for 30-40min, adding the zinc oxide, the titanium dioxide, the curing agent, the PBT resin and the calcium stearate, continuously mixing and stirring for 20-25min to prepare a composition, finally adding the heat stabilizer, the silver-loaded zirconium hydroxy phosphate nano antibacterial agent, the nano master batch and the toughening agent, stirring for 20-30min to prepare the reinforced composition, then, adding reinforcing rib wires into the reinforcing composition, and uniformly stirring to obtain a reinforcing material;
step five: die casting of reinforcement layer
Guiding the reinforcing material obtained in the fourth step into a cavity of a mold through an inner gate, controlling the linear speed at 15-70m/s, then applying pressure to the cavity of the mold, controlling the temperature during pressure application at 100-200 ℃, controlling the liquid forging specific pressure at 5-10MPa, so that the reinforcing material is coated on the upper surface of the aluminum alloy solidified metal layer to form a reinforcing layer, and then maintaining the pressure for 5-7s to obtain a semi-finished material;
step six: second liquid forging
Preheating the die of the die casting machine again, wherein the preheating temperature is 380 ℃ plus the material, preheating is carried out for 2-3min, then, the temperature of the residual liquid metal material in the smelting furnace is reduced by 60-70 ℃ again, the residual liquid metal material is introduced into the die cavity of the die through the inner sprue, then, the temperature of the liquid metal material is reduced by 60-70 ℃, the die casting machine is started when the liquid metal material coexists with solid and liquid, pressure is applied to the die cavity of the die, the specific liquid forging pressure is controlled to be 80-120MPa, so that the liquid metal material is filled in the semi-finished product of the material obtained in the step five, the temperature during pressure application is controlled to be 600 ℃ plus the material, then, the pressure is maintained for 30-45s, after the pressure application is finished;
step seven: material finishing
And (2) after pressure relief, immediately demoulding the aluminum alloy coarse material, immediately burying the aluminum alloy coarse material with sand and soil, taking out the aluminum alloy coarse material for air cooling when the aluminum alloy coarse material is cooled to below 150 ℃, then carrying out strengthening heat treatment on the aluminum alloy coarse material, polishing after the strengthening heat treatment is finished, spraying an antioxidant on the surface of the aluminum alloy coarse material, and then placing the aluminum alloy coarse material into nitrogen for thermosetting to form a strengthening coating on the surface of the material, thereby obtaining the finished product of the aluminum alloy material.
The further improvement lies in that: in the first step, after being crushed, the raw materials are mixed and stirred for 15-20min, then the raw materials are led into an ultrasonic disperser to be dispersed for 5-8min, and the pressure in the ultrasonic disperser is controlled to be 1.15-1.18 MPa.
The further improvement lies in that: and in the second step, the liquid metal material is introduced into a cavity of the mold through an inner gate, and the linear speed is controlled to be 16-80 m/s.
The further improvement lies in that: and in the third step, the liquid forging specific pressure is controlled to be 80-120MPa, so that the liquid metal material is filled in the bottom in the die cavity of the die within 0.1-0.3 s.
The further improvement lies in that: in the fourth step, reinforcing rib yarns are added into the reinforcing composition, and the reinforcing rib yarns are fiber yarns with the caliber of 0.1-0.15 mm.
The further improvement lies in that: and fifthly, coating the reinforcing material on the upper surface of the aluminum alloy solidified metal layer to form a reinforcing layer, and simultaneously, penetrating the reinforcing layer into the aluminum alloy solidified metal layer and integrally forming.
The further improvement lies in that: in the sixth step, the specific process of stopping heating step by step is as follows: the temperature is reduced by 50 ℃ every second within 5s until the temperature in the cavity is 350-400 ℃, and then the pressurization is stopped.
The further improvement lies in that: in the seventh step, the specific process of the strengthening heat treatment is as follows: s1: heating the aluminum alloy coarse material to 280-plus-300 ℃, then preserving heat for 1.0-1.2h, cooling to 100-plus-120 ℃ within 20-30min, and finally naturally cooling to room temperature and standing for 4-5 h; s2: heating the aluminum alloy coarse material to 320-.
The invention has the beneficial effects that: the invention strictly controls the flows of liquid forging specific pressure, pressurization starting temperature, pressure maintaining time, mold preheating temperature, liquid metal material pouring temperature, mold lubrication and the like by a liquid forging technology, and is matched with a semi-solid forming technology to pressurize when liquid metal material solid and liquid coexist, utilizes the characteristic of metal when the liquid metal material is transited from the liquid state to the solid state or the solid state to the liquid state, integrates the advantages of solidification processing and plastic processing, compared with common solidification processing, reduces the processing temperature by about 120 ℃, has small deformation resistance, leads the metal to be crystallized and solidified under the pressure and forcibly eliminates shrinkage cavity and shrinkage porosity formed by solidification shrinkage so as to obtain a material without casting defects, and is matched with the function of ultrasonic dispersion to carry out ultrasonic dispersion on various materials so as to homogenize the inside of the liquid metal material, improve the integral quality, and facilitate the processing of parts with complicated shapes and high precision requirements, simultaneously, add the enhancement layer in the material is inside, provide the toughness of resin, further optimize tensile strength with the reinforcing bar silk to make enhancement layer integrated into one piece in the inside of aluminum alloy metal level through secondary liquid die forging, improve the holistic intensity of aluminum alloy and toughness, through strengthening heat treatment and anti-oxidant processing at last, improve aluminum alloy material's stability in the difference in temperature is in turn.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a flow chart of the liquid metal material processing of the present invention;
FIG. 3 is a flow chart of the reinforcement material process of the present invention;
FIG. 4 is a flow chart of the strengthening heat treatment of the present invention;
FIG. 5 is an integrated schematic view of a solidified metal layer and a reinforcing layer of an aluminum alloy according to the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to the illustrations in fig. 1, 2, 3, 4 and 5, the present embodiment proposes an integrated forming and preparing technique for a high-strength and high-toughness cast aluminum alloy material, which comprises the following steps:
the method comprises the following steps: preparing an aluminum alloy material
Preparing the materials of the aluminum alloy base material according to the mass ratio: the method comprises the following steps of screening and impurity removing treatment are carried out on 95 parts of aluminum powder, 8 parts of rare earth elements, 18 parts of tin powder, 12 parts of copper powder, 3 parts of vanadium powder, 7 parts of nickel powder, 7 parts of magnesium powder, 12 parts of silicon powder, 6 parts of zinc powder, 4 parts of titanium powder, 2 parts of manganese powder, 2 parts of lithium powder, 3 parts of strontium powder, 3 parts of cobalt powder and 10 parts of magnetic powder, then carrying out low-temperature ball milling and crushing, mixing and stirring for 15-20min after crushing, then adding the rare earth elements and the magnetic powder, starting an ultrasonic generator, carrying out ultrasonic dispersion for 5-8min, controlling the pressure in an ultrasonic disperser to be 1.15-1.18MPa, and carrying out homogeneous dispersion on each material in the ultrasonic disperser to obtain a mixture;
step two: molten aluminum alloy material
Putting the mixture into a smelting furnace, adjusting the temperature in the smelting furnace to 700 ℃, simultaneously assisting stirring, stirring for 15min, stopping stirring when the materials in the smelting furnace are completely molten to be in a liquid state, obtaining a liquid metal material, then preparing a die casting machine, coating a lubricant in a die cavity of the die casting machine, preheating a die of the die casting machine, wherein the preheating temperature is 300 ℃, preheating for 3min, cooling the liquid metal material to 60 ℃ after preheating, then guiding the liquid metal material into the die cavity of the die through an inner pouring gate, and controlling the linear speed to be 30 m/s;
step three: first liquid forging
Cooling the liquid metal material by 60 ℃ again, starting a die casting machine when the liquid metal material is solid and liquid coexists, applying pressure to the cavity of the die, controlling the specific liquid forging pressure to be 100MPa, filling the liquid metal material at the bottom of the cavity of the die within 0.2s, controlling the temperature during pressure application to be 600 ℃, maintaining the pressure for 40s, and stopping heating and pressurizing after the completion to obtain the plastically deformed aluminum alloy solidified metal layer;
step four: preparation of the reinforcing layer Material
Preparing materials of the reinforcing layer according to the mass ratio: 40 parts of modified phenolic resin, 11 parts of titanium dioxide, 3 parts of barium sulfate powder, 7 parts of curing agent, 9 parts of zinc oxide, 50 parts of PBT resin, 12 parts of glass fiber, 1.2 parts of heat stabilizer, 0.6 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 7 parts of nano master batch, 8 parts of toughening agent and 7 parts of calcium stearate, mixing and stirring the modified phenolic resin, the glass fiber and the barium sulfate powder for 35min, adding the zinc oxide, the titanium dioxide, the curing agent, the PBT resin and the calcium stearate, continuously mixing and stirring for 22min to prepare a composition, finally adding the heat stabilizer, the silver-loaded zirconium hydroxy phosphate nano antibacterial agent, the nano master batch and the toughening agent, stirring for 25min to prepare a reinforced composition, then adding reinforcing rib filaments into the reinforced composition, wherein the reinforcing rib filaments are fiber filaments with the caliber of 0.12mm, and uniformly stirring to obtain a reinforced material;
step five: die casting of reinforcement layer
Guiding the reinforcing material obtained in the fourth step into a cavity of a die through an inner gate, controlling the linear speed at 25m/s, then applying pressure in the cavity of the die, controlling the temperature during pressure application at 150 ℃ and controlling the liquid forging specific pressure at 5MPa, so that the reinforcing material is coated on the upper surface of the aluminum alloy solidified metal layer to form a reinforcing layer, meanwhile, the reinforcing layer is permeated into the aluminum alloy solidified metal layer and integrally formed, and then maintaining the pressure for 5s to obtain a semi-finished product of the material;
step six: second liquid forging
Preheating the die of the die casting machine again, wherein the preheating temperature is 300 ℃, preheating is carried out for 2min, then, cooling is carried out on the residual liquid metal material in the smelting furnace for 60 ℃ again, the residual liquid metal material is guided into the die cavity of the die through an inner pouring gate, then, the liquid metal material is cooled for 60 ℃, the die casting machine is started when solid and liquid of the liquid metal material coexist, pressure is applied to the die cavity of the die, the liquid forging specific pressure is controlled to be 100MPa, the liquid metal material is filled on the semi-finished product of the material obtained in the fifth step, the temperature when the pressure is applied is controlled to be 600 ℃, then, the pressure is maintained for 35s, after the pressure is applied, heating is stopped step by: cooling the temperature by 50 ℃ every second within 5s until the temperature in the cavity is 360 ℃, and then stopping pressurizing to obtain the aluminum alloy coarse material;
step seven: material finishing
After pressure relief, immediately demoulding the aluminum alloy coarse material, immediately burying the aluminum alloy coarse material with sand and soil, taking out the aluminum alloy coarse material for air cooling when the aluminum alloy coarse material is cooled to below 150 ℃, and then performing strengthening heat treatment on the aluminum alloy coarse material, wherein the specific flow of the strengthening heat treatment is as follows: s1: heating the aluminum alloy coarse material to 280 ℃, then preserving heat for 1.0h, cooling to 100 ℃ within 20min, and finally naturally cooling to room temperature and standing for 4 h; s2: and heating the aluminum alloy coarse material to 320 ℃, preserving heat for 40min, then cooling to 230 ℃ with water, preserving heat for 5h, cooling to 100 ℃ within 45min, finally naturally cooling to room temperature, polishing after the cooling, spraying an antioxidant on the surface, and then placing the aluminum alloy coarse material into nitrogen for thermosetting to form a reinforced coating on the surface of the material, thereby obtaining the finished product of the aluminum alloy material.
The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material strictly controls the flows of liquid forging specific pressure, pressurization starting temperature, pressure maintaining time, mold preheating temperature, liquid metal material pouring temperature, mold lubrication and the like through a liquid forging technology, is matched with a semi-solid forming technology, is pressurized when liquid metal material is in solid-liquid coexistence, utilizes the characteristic of metal in transition from liquid state to solid state or solid state to liquid state, integrates the advantages of solidification processing and plastic processing, reduces the processing temperature by about 120 ℃ compared with common solidification processing, has small deformation resistance, enables the metal to be crystallized and solidified under the pressure and forcibly eliminates shrinkage cavity and shrinkage porosity formed by solidification shrinkage so as to obtain a material without casting defects, and is matched with the function of ultrasonic dispersion to carry out ultrasonic dispersion on various materials so as to homogenize the interior of the liquid metal material and improve the overall quality, the part that the convenient shaping form is complicated and the required precision is high, simultaneously, at the inside enhancement layer that adds of material, provides the toughness of resin, is aided with the further tensile strength that optimizes of reinforcing bar silk to make enhancement layer integrated into one piece in the inside of aluminum alloy metal level through secondary liquid die forging, improve the holistic intensity of aluminum alloy and toughness, through intensive heat treatment and anti-oxidant processing at last, improve aluminum alloy material's stability in the difference in temperature is in turn.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material is characterized in that: the method comprises the following steps:
the method comprises the following steps: preparing an aluminum alloy material
Preparing the materials of the aluminum alloy base material according to the mass ratio: the preparation method comprises the following steps of screening and impurity removing aluminum powder, tin powder, copper powder, vanadium powder, 5-8 parts of nickel powder, 6-8 parts of magnesium powder, 10-15 parts of silicon powder, 5-7 parts of zinc powder, 3-5 parts of titanium powder, 1-3 parts of manganese powder, 1-3 parts of lithium powder, 2-4 parts of strontium powder, 2-4 parts of cobalt powder and 6-11 parts of magnetic powder, carrying out low-temperature ball milling and crushing, then carrying out mixing stirring, adding rare earth elements and magnetic powder, starting an ultrasonic generator, carrying out ultrasonic dispersion, and obtaining a mixture after homogenizing and dispersing the internal materials;
step two: molten aluminum alloy material
Putting the mixture into a smelting furnace, adjusting the temperature in the smelting furnace to 700-;
step three: first liquid forging
Cooling the liquid metal material by 60-70 ℃ again, starting a die casting machine when solid and liquid of the liquid metal material coexist, pressing the die cavity of the die, controlling the liquid forging specific pressure to be 80-120MPa, filling the liquid metal material into the bottom in the die cavity, controlling the temperature during pressing to be 550-600 ℃, then maintaining the pressure for 30-45s, and stopping heating and pressing after the pressure is maintained, so as to obtain the aluminum alloy solidified metal layer after plastic deformation;
step four: preparation of the reinforcing layer Material
Preparing materials of the reinforcing layer according to the mass ratio: 30-50 parts of modified phenolic resin, 10-12 parts of titanium dioxide, 2-4 parts of barium sulfate powder, 5-8 parts of curing agent, 8-10 parts of zinc oxide, 40-70 parts of PBT resin, 10-15 parts of glass fiber, 1-1.5 parts of heat stabilizer, 0.4-0.7 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 5-10 parts of nano master batch, 5-9 parts of toughening agent and 3-10 parts of calcium stearate, mixing and stirring the modified phenolic resin, the glass fiber and the barium sulfate powder for 30-40min, adding the zinc oxide, the titanium dioxide, the curing agent, the PBT resin and the calcium stearate, continuously mixing and stirring for 20-25min to prepare a composition, finally adding the heat stabilizer, the silver-loaded zirconium hydroxy phosphate nano antibacterial agent, the nano master batch and the toughening agent, stirring for 20-30min to prepare the reinforced composition, then, adding reinforcing rib wires into the reinforcing composition, and uniformly stirring to obtain a reinforcing material;
step five: die casting of reinforcement layer
Guiding the reinforcing material obtained in the fourth step into a cavity of a mold through an inner gate, controlling the linear speed at 15-70m/s, then applying pressure to the cavity of the mold, controlling the temperature during pressure application at 100-200 ℃, controlling the liquid forging specific pressure at 5-10MPa, so that the reinforcing material is coated on the upper surface of the aluminum alloy solidified metal layer to form a reinforcing layer, and then maintaining the pressure for 5-7s to obtain a semi-finished material;
step six: second liquid forging
Preheating the die of the die casting machine again, wherein the preheating temperature is 380 ℃ plus the material, preheating is carried out for 2-3min, then, the temperature of the residual liquid metal material in the smelting furnace is reduced by 60-70 ℃ again, the residual liquid metal material is introduced into the die cavity of the die through the inner sprue, then, the temperature of the liquid metal material is reduced by 60-70 ℃, the die casting machine is started when the liquid metal material coexists with solid and liquid, pressure is applied to the die cavity of the die, the specific liquid forging pressure is controlled to be 80-120MPa, so that the liquid metal material is filled in the semi-finished product of the material obtained in the step five, the temperature during pressure application is controlled to be 600 ℃ plus the material, then, the pressure is maintained for 30-45s, after the pressure application is finished;
step seven: material finishing
And (2) after pressure relief, immediately demoulding the aluminum alloy coarse material, immediately burying the aluminum alloy coarse material with sand and soil, taking out the aluminum alloy coarse material for air cooling when the aluminum alloy coarse material is cooled to below 150 ℃, then carrying out strengthening heat treatment on the aluminum alloy coarse material, polishing after the strengthening heat treatment is finished, spraying an antioxidant on the surface of the aluminum alloy coarse material, and then placing the aluminum alloy coarse material into nitrogen for thermosetting to form a strengthening coating on the surface of the material, thereby obtaining the finished product of the aluminum alloy material.
2. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: in the first step, after being crushed, the raw materials are mixed and stirred for 15-20min, then the raw materials are led into an ultrasonic disperser to be dispersed for 5-8min, and the pressure in the ultrasonic disperser is controlled to be 1.15-1.18 MPa.
3. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: and in the second step, the liquid metal material is introduced into a cavity of the mold through an inner gate, and the linear speed is controlled to be 16-80 m/s.
4. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: and in the third step, the liquid forging specific pressure is controlled to be 80-120MPa, so that the liquid metal material is filled in the bottom in the die cavity of the die within 0.1-0.3 s.
5. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: in the fourth step, reinforcing rib yarns are added into the reinforcing composition, and the reinforcing rib yarns are fiber yarns with the caliber of 0.1-0.15 mm.
6. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: and fifthly, coating the reinforcing material on the upper surface of the aluminum alloy solidified metal layer to form a reinforcing layer, and simultaneously, penetrating the reinforcing layer into the aluminum alloy solidified metal layer and integrally forming.
7. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: in the sixth step, the specific process of stopping heating step by step is as follows: the temperature is reduced by 50 ℃ every second within 5s until the temperature in the cavity is 350-400 ℃, and then the pressurization is stopped.
8. The forming and preparing integrated technology of the high-strength high-toughness cast aluminum alloy material according to claim 1, characterized in that: in the seventh step, the specific process of the strengthening heat treatment is as follows: s1: heating the aluminum alloy coarse material to 280-plus-300 ℃, then preserving heat for 1.0-1.2h, cooling to 100-plus-120 ℃ within 20-30min, and finally naturally cooling to room temperature and standing for 4-5 h; s2: heating the aluminum alloy coarse material to 320-.
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