CN109852836B - Preparation method of aluminum alloy casting - Google Patents
Preparation method of aluminum alloy casting Download PDFInfo
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- CN109852836B CN109852836B CN201910216466.8A CN201910216466A CN109852836B CN 109852836 B CN109852836 B CN 109852836B CN 201910216466 A CN201910216466 A CN 201910216466A CN 109852836 B CN109852836 B CN 109852836B
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Abstract
The invention discloses a preparation method of an aluminum alloy castingThe method relates to the technical field of aluminum alloy preparation methods. The method comprises the steps of firstly, uniformly mixing pure aluminum powder, pure titanium powder and titanium borohydride powder to serve as a refiner, preheating the refiner mixed powder at high temperature to decompose the titanium borohydride, and enabling self-propagating reaction in the refiner mixed powder to form fine TiAl at high temperature3And TiB2And (2) extruding the particles at high temperature to form a filamentous refiner containing hydrogen holes, cutting the filamentous refiner into fine blocky refiners, spraying the fine blocky refiners into the aluminum alloy melt by a high-pressure spraying method, refining after the melt is solidified, and removing residual hydrogen elements in the aluminum alloy melt by vacuumizing. The method has simple process, the prepared aluminum alloy has good refining effect, and the strength of the aluminum alloy casting is improved.
Description
Technical Field
The invention relates to the technical field of preparation devices and methods of aluminum alloy, in particular to a preparation method of an aluminum alloy casting.
Background
The Al-Ti-B intermediate alloy is one of the most important refiners for refining the aluminum alloy structure, and has wide application in the manufacturing fields of aluminum alloy casting and rolling and the like all over the world. The Al-Ti-B refiner is mainly TiAl3And TiB2The particles have the refining effect, the action mechanism of the particles is not very clear at present, and the shape, the size and the content of the particles mainly influence the refining effect. TiAl in Al-Ti-B refiner in international standard3And TiB2There are definite limits to the size of the particles. The smaller the particles are, the more obvious the thinning effect is, and the better the mechanical property of the aluminum alloy is.
The aluminum alloy is widely applied to the industrial fields of aviation, aerospace, automobile, ship manufacturing and the like, and the thinning structure of the cast alloy is controlled and the forging stock structure is influenced by the refiner to a great extent in the aluminum alloy industry, so that the preparation of the aluminum titanium boron refiner and the thinning of the aluminum alloy are very important, and the aluminum titanium boron refiner has great market value. The conventional preparation of Al-Ti-B intermediate alloy is mainly prepared by a fluoride salt method, and KBF is adopted 4And K2TiF6Heating with Al at high temperature. KBF 4And K2TiF6The salt contains B And the effective content of Ti is low, and the process is complex.
Disclosure of Invention
The invention aims to solve the technical problem of how to provide a preparation method of an aluminum alloy casting with simple process and good refining effect.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a preparation method of an aluminum alloy casting uses an aluminum alloy casting preparation device, and is characterized by comprising the following steps:
uniformly mixing pure aluminum powder, pure titanium powder and titanium borohydride powder to form refiner mixed powder, putting the refiner mixed powder into a placing space formed by a space among an extrusion heating die, a die sleeve and a punch head assembly to form refiner mixed powder, and compacting the refiner mixed powder on the placing space through the punch head assembly;
putting an aluminum alloy raw material into a smelting crucible at the lower side of a furnace body, sealing the aluminum alloy raw material into the furnace body through a base, and heating the aluminum alloy raw material by using a melt heater at the outer side of the crucible to form an aluminum alloy melt;
starting an electric pulse device positioned in the punch assembly, heating the refiner mixed powder by the high-temperature briquetting through an ignition electrode at the lower side of the electric pulse device, decomposing titanium borohydride in the refiner mixed powder close to the high-temperature briquetting into nanometer and micrometer-scale Ti powder, B powder and gaseous hydrogen by heating, and reacting Ti and B in a refiner mixed powder placing space to form TiB2Particles, Ti and Al in the space for placing the mixed powder of the refiner react to form TiAl3The particles continuously decompose titanium borohydride along with the heat release of the self-propagating reaction, and the self-propagating reaction is continuously carried out; then slowly pressing down the punch to make the TiAl containing fine TiAl3And TiB2The granular master alloy slowly enters a secondary pulverization cavity of the secondary pulverization die through an extrusion wire discharge pipe on the lower side of the extrusion heating die; a part of decomposed hydrogen enters the furnace body through the extrusion wire discharge pipe and is finally discharged out of the furnace body through the exhaust hole; a part of hydrogen forms pores in the master alloy; after the self-propagating reaction is ignited, starting a powder heater in the extrusion heating die to preheat the intermediate alloy;
pressing the mixed powder of the refiner downwards along with the punch head to enable the newly formed intermediate alloy to be extruded into a secondary pulverization chamber through an extrusion wire discharge pipe and to form a wire shape, and cutting the wire-shaped intermediate alloy into refiner particles by a secondary pulverization wheel in the secondary pulverization chamber under the action of a pulverization wheel driving device; injecting high-pressure inert gas into the secondary pulverization chamber through a high-pressure gas pipe with one end positioned in the secondary pulverization chamber and the other end positioned outside the furnace bodyGas and refiner particles are injected into the aluminum alloy melt through a refiner nozzle, and because the interior of the fine refiner particles contains hydrogen pores formed under high pressure, the hydrogen pores are subjected to micro explosion along with the melting of the refiner particles, so that TiAl is formed3And TiB2The particles are uniformly dispersed in the aluminum alloy melt;
stopping the movement of the punch when the injection amount of the grain refiner reaches the required amount of the aluminum alloy melt, and stopping the heating of the powder heater; and vacuumizing the furnace body, filling inert gas or air to 1 atmosphere, opening the base to take out the smelting crucible, and casting and molding the casting.
The further technical scheme is as follows: al in the pure aluminum powder, the pure titanium powder and the titanium borohydride powder: the molar ratio of Ti is 3-9: 1, Ti: ti (BH)4)3In a molar ratio of 5: 1.
the further technical scheme is as follows: the aluminum alloy casting preparation device comprises a furnace body and a base, wherein the base is fixed at the bottom of the furnace body, a smelting crucible is arranged on the base in the furnace body, aluminum alloy raw materials to be heated are arranged in the smelting crucible, a melt heater is arranged on the outer side of the smelting crucible, a refiner providing mechanism is arranged in the furnace body on the upper side of the smelting crucible, the refiner providing mechanism is used for forming an aluminum alloy refiner, and the refiner providing mechanism is fixed on the inner wall of the furnace body through a fixing rod.
The further technical scheme is as follows: the refiner providing mechanism comprises a refiner female die, a refiner forming cavity with an opening at the upper end is formed in the female die, a secondary pulverizing die is arranged at the lower side of the female die, the secondary pulverizing cavity is formed in the secondary pulverizing die, the female die is fixedly connected with the secondary pulverizing die, an extrusion heating die is arranged in the refiner forming cavity, a powder heater is arranged in the extrusion heating die, an extrusion wire discharge pipe communicated with the refiner forming cavity and the secondary pulverizing cavity is arranged on the extrusion heating die, a die sleeve is arranged in the refiner forming cavity at the upper side of the heating die, a heatable punch head assembly is arranged in the die sleeve, and a space among the extrusion heating die, the die sleeve and the punch head assembly forms a placing space for mixed powder of the refiner;
the secondary pulverization intracavity of discharge pipe downside is provided with the secondary pulverization wheel of two relative settings, and the refiner inlet port between two secondary pulverization wheels is located under the discharge pipe, be formed with the refiner nozzle on the secondary pulverization mould of refiner discharge port downside between the secondary pulverization wheel, the refiner nozzle is located the top of crucible, the secondary pulverization intracavity is provided with pulverization wheel drive arrangement, drive arrangement is used for the drive the motion of pulverization wheel, high-pressurepipe's one end is located outside the furnace body, high-pressurepipe's the other end extends to the secondary pulverization intracavity for carry inert gas to the secondary pulverization intracavity.
The further technical scheme is as follows: the punch assembly comprises a punch, an electric pulser is arranged in the punch, an ignition electrode is arranged at the lower end of the electric pulser, a high-temperature pressing block is arranged on the lower side of the ignition electrode, the high-temperature pressing block is directly contacted with the mixed powder of the refiner, the temperature of the high-temperature pressing block is raised through the electric pulser, and then the mixed powder of the refiner is heated.
The further technical scheme is as follows: and a first sealing ring is arranged between the punch and the die sleeve.
The further technical scheme is as follows: and a punch driving device is arranged on the outer side of the furnace body and used for driving the punch to move up and down.
Preferably: the extrusion heating die is made of a ceramic material.
The further technical scheme is as follows: and a second sealing ring is arranged between the refiner female die and the secondary pulverizing die.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the method comprises the steps of firstly, uniformly mixing pure aluminum powder, pure titanium powder and titanium borohydride powder to serve as a refiner, preheating the refiner mixed powder at high temperature to decompose the titanium borohydride, and enabling self-propagating reaction in the refiner mixed powder to form fine TiAl at high temperature3And TiB2Granulating, extruding at high temperature to obtain filament-like fine powder containing hydrogen poresCutting the filiform refiner into fine block refiner, injecting the fine block refiner into the aluminum alloy melt by a high-pressure injection method, refining after the melt is solidified, and removing residual hydrogen elements in the aluminum alloy melt by vacuumizing. The method has simple process, the prepared aluminum alloy has good refining effect, and the strength of the aluminum alloy casting is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of the structure of the apparatus in an embodiment of the present invention;
wherein: 1: punch, 2: die sleeve, 3: refiner mixed powder, 4: a refiner master die; 5: fixing rod, 6: extruding and heating the mold; 6-1: an extruded filament discharge tube; 7: a high-pressure air pipe; 8: a powdering wheel drive; 9: a secondary powdering wheel; 10: a secondary pulverization cavity; 11: secondary pulverization of the mold; 11-1: a refiner nozzle; 12: a base; 13: a melt heater; 14: an aluminum alloy melt; 15: smelting a crucible; 16: (ii) a refiner particle; 17: a first seal ring; 18: a powder heater; 19: a furnace body; 20: a second seal ring; 21: high-temperature briquetting; 22: an ignition electrode; 23: an electric pulser.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in FIG. 1, the embodiment of the invention discloses an aluminum alloy casting preparation device, which comprises a furnace body 19 and a base 12, wherein the base 12 is fixed at the bottom of the furnace body 19, and the furnace body 19 and the base 12 jointly form a reaction space of the device. A smelting crucible 15 is arranged on the base 12 in the furnace body 19, aluminum alloy raw materials to be heated are arranged in the smelting crucible 15, a melt heater 13 is arranged on the outer side of the smelting crucible 15, a refiner providing mechanism is arranged in the furnace body 19 on the upper side of the smelting crucible 15 and used for forming an aluminum alloy refiner, and the refiner providing mechanism is fixed on the inner wall of the furnace body 19 through a fixing rod 5.
Further, as shown in fig. 1, the refiner providing mechanism includes a refiner mother die 4, a refiner forming cavity with an upper end opening is formed in the mother die, a secondary pulverizing die 11 is arranged on the lower side of the mother die, a secondary pulverizing cavity 10 is formed in the secondary pulverizing die 11, the mother die and the secondary pulverizing die 11 are fixedly connected, and preferably, a second sealing ring 17 is arranged between the refiner mother die 4 and the secondary pulverizing die 11 for realizing good sealing between the two. An extrusion heating die 6 is arranged in the refiner forming cavity, and the extrusion heating die 6 is made of a preferred ceramic material. A powder heater 18 is arranged in the extrusion heating die 6, an extrusion wire discharge pipe 6-1 communicated with the refiner forming cavity and the secondary pulverization cavity 10 is arranged on the extrusion heating die 6, a die sleeve 2 is arranged in the refiner forming cavity on the upper side of the heating die, a heatable punch head component is arranged in the die sleeve 2, and a space among the extrusion heating die 6, the die sleeve 2 and the punch head component forms a placing space for the mixed powder of the refiner;
as shown in figure 1, two opposite secondary pulverizing wheels 9 are arranged in a secondary pulverizing cavity 10 at the lower side of the discharge pipe, a refiner inlet between the two secondary pulverizing wheels 9 is positioned right below the discharge pipe, a refiner nozzle 11-1 is formed on a secondary pulverizing mould 11 at the lower side of a refiner discharge port between the secondary pulverizing wheels 9, and the refiner nozzle 11-1 is positioned above the crucible 15. Be provided with powdering wheel drive 8 in the secondary powdering chamber 10, drive arrangement is used for the drive the motion of powdering wheel, the one end of high-pressurepipe 7 is located outside furnace body 19, the other end of high-pressurepipe 7 extends to in the secondary powdering chamber 10 for carry inert gas in to secondary powdering chamber 10.
Further, as shown in fig. 1, the punch assembly includes a punch 1, an electric pulser 23 is disposed in the punch 1, an ignition electrode 22 is disposed at a lower end of the electric pulser 23, a high-temperature compact 21 is disposed at a lower side of the ignition electrode 22, the high-temperature compact 21 is in direct contact with the mixed refiner powder 3, the high-temperature compact 21 is heated by the electric pulser 23, and then the mixed refiner powder 3 is heated. Preferably, a first sealing ring 20 is disposed between the punch 1 and the die sleeve 2 for achieving a good seal therebetween. In addition, the outer side of the furnace body 19 is also provided with a punch driving device for driving the punch 1 to move up and down according to the process requirement.
The embodiment of the invention also discloses a preparation method of the aluminum alloy casting, which comprises the following steps:
uniformly mixing pure aluminum powder, pure titanium powder and titanium borohydride powder to form refiner mixed powder 3, putting the refiner mixed powder 3 into a placing space formed by a space among an extrusion heating die 6, a die sleeve 2 and a punch assembly to form the refiner mixed powder, and compacting the refiner mixed powder 3 on the placing space through the punch assembly; preferably, the ratio of Al in the pure aluminum powder, the pure titanium powder and the titanium borohydride powder is: the molar ratio of Ti is 3-9: 1, Ti: ti (BH)4)3In a molar ratio of 5: 1;
putting an aluminum alloy raw material into a smelting crucible 15 at the lower side of a furnace body 19, sealing the aluminum alloy raw material into the furnace body 19 through a base 12, and heating the aluminum alloy raw material by using a melt heater 13 at the outer side of the crucible 15 to form an aluminum alloy melt 14;
starting an electric pulse device 23 positioned in the punch assembly, heating the refiner mixed powder 3 by the high-temperature briquetting 21 through an ignition electrode 22 at the lower side of the electric pulse device 23, heating the titanium borohydride in the refiner mixed powder 3 close to the high-temperature briquetting 21, firstly decomposing the titanium borohydride into nanometer and micrometer-scale Ti powder, B powder and gaseous hydrogen, and discharging the refiner mixed powderTi in the space reacts with B to form TiB2Particles, Ti and Al in the space for placing the mixed powder of the refiner react to form TiAl3The particles continuously decompose titanium borohydride along with the heat release of the self-propagating reaction, and the self-propagating reaction is continuously carried out; the punch 1 is then slowly pressed down so that fine TiAl is contained3And TiB2The granular master alloy slowly enters a secondary pulverization cavity 10 of a secondary pulverization die 11 through an extrusion wire discharge pipe on the lower side of the extrusion heating die; a part of decomposed hydrogen also enters the furnace body 19 through the extruded filament discharge pipe 6-1 and is finally discharged out of the furnace body 19 through the exhaust hole; a part of hydrogen forms pores in the master alloy; after the self-propagating reaction is ignited, starting a powder heater 18 in the extrusion heating die 6 to preheat the intermediate alloy;
as the punch 1 presses down the mixed powder 3 of the refiner, the newly formed intermediate alloy is extruded into a secondary pulverization chamber 10 through an extrusion wire discharge pipe 6-1 and is formed into a wire shape, and a secondary pulverization wheel 9 in the secondary pulverization chamber 10 cuts the wire-shaped intermediate alloy into refiner particles 16 under the action of a pulverization wheel driving device 8; injecting high-pressure inert gas into the secondary pulverizing cavity 10 through a high-pressure gas pipe 7 with one end positioned in the secondary pulverizing cavity 10 and the other end positioned outside the furnace body, injecting the refiner particles 16 into the aluminum alloy melt 14 through a refiner nozzle 11-1, wherein the fine refiner particles 16 contain hydrogen holes formed under high pressure, and the hydrogen holes are subjected to micro explosion along with the melting of the refiner particles 16 so as to ensure that TiAl is formed3And TiB2The particles are uniformly dispersed in the aluminum alloy melt 14;
when the amount of the injected grain refiner reaches the required amount of the aluminum alloy melt 14, stopping the movement of the punch 1 and simultaneously stopping the heating of the powder heater 18; and vacuumizing the furnace body 19, filling inert gas or air to 1 atmosphere, opening the base 12, taking out the smelting crucible 15, and casting and molding the casting.
The method comprises the steps of firstly, uniformly mixing pure aluminum powder, pure titanium powder and titanium borohydride powder to serve as a refiner, preheating the refiner mixed powder at high temperature to decompose the titanium borohydride, and enabling self-propagating reaction in the refiner mixed powder at high temperatureShould form fine TiAl3And TiB2And (2) extruding the particles at high temperature to form a filamentous refiner containing hydrogen holes, cutting the filamentous refiner into fine blocky refiners, spraying the fine blocky refiners into the aluminum alloy melt by a high-pressure spraying method, refining after the melt is solidified, and removing residual hydrogen elements in the aluminum alloy melt by vacuumizing. The method has simple process, the prepared aluminum alloy has good refining effect, and the strength of the aluminum alloy casting is improved.
Claims (5)
1. A preparation method of an aluminum alloy casting uses an aluminum alloy casting preparation device, and is characterized in that:
the aluminum alloy casting preparation device comprises a furnace body (19) and a base (12), wherein the base (12) is fixed at the bottom of the furnace body (19), a smelting crucible (15) is arranged on the base (12) in the furnace body (19), aluminum alloy raw materials to be heated are arranged in the smelting crucible (15), a melt heater (13) is arranged outside the smelting crucible (15), a refiner providing mechanism is arranged in the furnace body (19) on the upper side of the smelting crucible (15), the refiner providing mechanism is used for forming an aluminum alloy refiner, and the refiner providing mechanism is fixed on the inner wall of the furnace body (19) through a fixing rod (5);
the refiner supply mechanism comprises a refiner female die (4) in which a refiner forming cavity with an upper end opening is formed, a secondary pulverization die (11) is arranged at the lower side of the female die, a secondary pulverization cavity (10) is formed in the secondary pulverization die (11), the female die is fixedly connected with the secondary pulverization die (11), an extrusion heating die (6) is arranged in the refiner forming cavity, a powder heater (18) is arranged in the extrusion heating die (6), and an extrusion filament discharge pipe (6-1) communicated with the refiner forming cavity and the secondary pulverization cavity (10) is arranged on the extrusion heating die (6), a mold sleeve (2) is arranged in the refiner forming cavity at the upper side of the heating mold, a heatable punch component is arranged in the mold sleeve (2), the space among the extrusion heating die (6), the die sleeve (2) and the punch assembly forms a placing space for the mixed powder of the refiner; the punch assembly comprises a punch (1), an electric pulser (23) is arranged in the punch (1), an ignition electrode (22) is arranged at the lower end of the electric pulser (23), a high-temperature briquetting (21) is arranged on the lower side of the ignition electrode (22), the high-temperature briquetting (21) is directly contacted with the refiner mixed powder (3), the high-temperature briquetting (21) is heated through the electric pulser (23), and then the refiner mixed powder (3) is heated;
two secondary pulverizing wheels (9) which are oppositely arranged are arranged in a secondary pulverizing cavity (10) on the lower side of the discharge pipe, a refiner inlet between the two secondary pulverizing wheels (9) is positioned under the discharge pipe, a refiner nozzle (11-1) is formed on the secondary pulverizing mold (11) on the lower side of a refiner outlet between the two secondary pulverizing wheels (9), the refiner nozzle (11-1) is positioned above the crucible (15), a pulverizing wheel driving device (8) is arranged in the secondary pulverizing cavity (10) and is used for driving the pulverizing wheels to move, one end of a high-pressure air pipe (7) is positioned outside the furnace body (19), and the other end of the high-pressure air pipe (7) extends into the secondary pulverizing cavity (10) and is used for conveying inert gas into the secondary pulverizing cavity (10);
the method comprises the following steps:
uniformly mixing pure aluminum powder, pure titanium powder and titanium borohydride powder to form refiner mixed powder (3), putting the refiner mixed powder into a placing space formed by a space among an extrusion heating die (6), a die sleeve (2) and a punch assembly to form the refiner mixed powder, and compacting the refiner mixed powder (3) on the placing space through the punch assembly; al in the pure aluminum powder, the pure titanium powder and the titanium borohydride powder: the molar ratio of Ti is 3-9: 1, Ti: ti (BH)4)3In a molar ratio of 5: 1;
putting an aluminum alloy raw material into a smelting crucible (15) at the lower side of a furnace body (19), sealing the aluminum alloy raw material into the furnace body (19) through a base (12), and heating the aluminum alloy raw material by a melt heater (13) at the outer side of the crucible (15) to form an aluminum alloy melt (14);
an electric pulse device (23) positioned in the punch assembly is started, the high-temperature briquetting (21) is heated for the refiner mixed powder (3) through an ignition electrode (22) on the lower side of the electric pulse device (23), titanium borohydride in the refiner mixed powder (3) close to the high-temperature briquetting (21) is heated and firstly decomposed into nanometer and micrometer-scale Ti powder, B powder and gaseous hydrogen, and Ti and B in a refiner mixed powder placing space react to form TiB2Particles, Ti and Al in the space for placing the mixed powder of the refiner react to form TiAl3The particles continuously decompose titanium borohydride along with the heat release of the self-propagating reaction, and the self-propagating reaction is continuously carried out; then the punch (1) is slowly pressed downwards, so that the fine TiAl is contained3And TiB2The granular master alloy slowly enters a secondary pulverization cavity (10) of a secondary pulverization die (11) through an extrusion wire discharge pipe on the lower side of the extrusion heating die; a part of decomposed hydrogen also enters the furnace body (18) through the extruded wire discharge pipe (6-1) and is finally discharged out of the furnace body (19) through the exhaust hole; a part of hydrogen forms pores in the master alloy; after the self-propagating reaction is ignited, a powder heater (18) in the extrusion heating die (6) is started to preheat the intermediate alloy;
pressing the mixed powder (3) of the refiner downwards along with the punch (1) to enable the newly formed intermediate alloy to be extruded into a secondary pulverization chamber (10) through an extrusion wire discharge pipe (6-1) and to be formed into a wire shape, and cutting the wire-shaped intermediate alloy into refiner particles (16) by a secondary pulverization wheel (9) in the secondary pulverization chamber (10) under the action of a pulverization wheel driving device (8); injecting high-pressure inert gas into the secondary pulverization chamber (10) through a high-pressure gas pipe (7) with one end positioned in the secondary pulverization chamber (10) and the other end positioned outside the furnace body, injecting the refiner particles (16) into the aluminum alloy melt (14) through a refiner nozzle (11-1), and carrying out micro explosion on TiAl due to hydrogen holes formed under high pressure in the interior of the fine refiner particles (16) and the hydrogen holes along with the remelting of the refiner particles (16)3And TiB2The particles are uniformly dispersed in the aluminum alloy melt (14);
when the amount of injected grain refiner reaches the required amount of the aluminum alloy melt (14), stopping the movement of the punch (1) and simultaneously stopping the heating of the powder heater (18); and (3) vacuumizing the furnace body (19), filling inert gas or air to 1 atmosphere, opening the base (12) to take out the smelting crucible (15), and casting and molding the casting.
2. A method of producing an aluminum alloy casting according to claim 1, characterized in that: a first sealing ring (20) is arranged between the punch head (1) and the die sleeve (2).
3. A method of producing an aluminum alloy casting according to claim 1, characterized in that: and a punch driving device is arranged on the outer side of the furnace body (19) and is used for driving the punch (1) to move up and down.
4. A method of producing an aluminum alloy casting according to claim 1, characterized in that: the extrusion heating die (6) is made of a ceramic material.
5. A method of producing an aluminum alloy casting according to claim 1, characterized in that: a second sealing ring (17) is arranged between the refiner female die (4) and the secondary pulverizing die (11).
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