CN113770357A - Device and method for rapidly preparing multi-element alloy material with continuously-changed components by microwaves - Google Patents
Device and method for rapidly preparing multi-element alloy material with continuously-changed components by microwaves Download PDFInfo
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- CN113770357A CN113770357A CN202111081758.9A CN202111081758A CN113770357A CN 113770357 A CN113770357 A CN 113770357A CN 202111081758 A CN202111081758 A CN 202111081758A CN 113770357 A CN113770357 A CN 113770357A
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 118
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- 238000001816 cooling Methods 0.000 claims description 20
- 238000011049 filling Methods 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
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- 238000002844 melting Methods 0.000 claims description 10
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- 238000003723 Smelting Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
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- 239000000945 filler Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 4
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- 239000002994 raw material Substances 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 13
- 229910052718 tin Inorganic materials 0.000 description 8
- 239000011572 manganese Substances 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052738 indium Inorganic materials 0.000 description 5
- 239000011812 mixed powder Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
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- 229910052733 gallium Inorganic materials 0.000 description 4
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- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
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- 229910018140 Al-Sn Inorganic materials 0.000 description 2
- 229910018564 Al—Sn Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910018956 Sn—In Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1054—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by microwave
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Abstract
The invention discloses a device and a method for quickly preparing a multi-element alloy material with continuously changed components by microwaves, and relates to the technical field of alloy material processing. The device is under the flow control valve effect, and the metal powder of different compositions is sent into the powder mixer in proportion, under protective atmosphere, after mixing through agitating unit 5, gets into in the filler district through the feeding line, and absorbing material on the gyro wheel absorbs microwave generator's emission wave and heats metal powder, and metal powder granularity is little simultaneously, and the microwave penetration depth is rather than its particle diameter, forms vortex current on the granule surface, and vortex current loss generates heat and melts metal powder fast, makes its whole even sintering melt. The molten metal in a molten state moves downwards to an air exhaust pipeline along with the roller, is vacuumized by a vacuum pump, is delivered to a discharge port after bubbles in the molten metal are eliminated, is slowly condensed and enters a blank drawing device through a material delivery pipeline, and the alloy material with continuously changed components is obtained.
Description
Technical Field
The invention relates to the technical field of alloy material processing, in particular to a device and a method for quickly preparing a multi-element alloy material with continuously changed components by microwaves.
Background
Along with the continuous development of economy in China, various performance requirements are continuously put forward on materials, and the materials are promoted to be developed in various aspects such as high specific strength, high specific hardness, high specific toughness, high temperature resistance, corrosion resistance and the like. The metal composite material can greatly improve various performances of a single metal material, such as thermal expansibility, strength, fracture toughness, impact toughness, wear resistance, electrical property and the like. However, the research and development of metal materials generally depend on traditional material methods such as trial and error methods, and the existing method for preparing the metal composite material only can prepare one-component alloy by smelting once, so that the manufacturing cost is high, the period is long, and the research and development of the alloy material are restricted.
In recent years, many studies have been made on alloy materials whose components change continuously at a time, because of the high production cost in the development process of the alloy materials. For example, CN110722161A discloses a multi-powder-based high-throughput metal fiber preparation device and a method for preparing metal fibers by using the same, wherein single-phase conveying is performed by a plurality of single-channel powder conveying devices, the powder is uniformly mixed in a powder mixing device by a stirring paddle, then the mixture enters a metal powder melting system, heating is performed by an induction coil or a laser beam, and molten metal is drawn or extruded in a metal fiber forming system to obtain metal fibers with gradient change components. Induction coil heating passes through electromagnetic induction and skin effect, can produce the very high hot source region of a selectivity on can making the top layer of material, and heat outside-in transmits, causes that rate of heating is slow, the inhomogeneous phenomenon of heating, and laser beam rate of heating is fast but the energy is concentrated, often can make material surface temperature rise rapidly, and the inside temperature of material is less than surface temperature, and both have the inhomogeneous problem of heating.
CN105954074A discloses a high throughput apparatus for preparing multi-component gradient metal material, wherein a metal powder storage and a flow control valve control the feeding amount of metal powder entering a powder mixer, and the metal powder is fed into a rotary feeding system after being uniformly mixed by the powder mixer, and heated and melted by an induction heater outside a cylindrical charging barrel, and the melted metal is fed into a blank forming system at the bottom by an internal screw rod, and a metal bar with continuously changed components is formed under the action of a blank drawing apparatus. The induction coil heats and transfers heat from outside to inside, the heating rate is slow, and the phenomenon of uneven heating exists.
Disclosure of Invention
The invention aims to provide a device and a method for quickly preparing a multi-element alloy material with continuously changed components by microwaves, and solves the problem of uneven heating caused by slow heating rate or over concentration of the existing device.
In order to solve the technical problems, the invention adopts the following technical scheme: a device for rapidly preparing multi-element alloy material with continuously changed components by microwave is characterized in that: the microwave melting system comprises a metal powder storage system, a feeding pipeline, a microwave melting system and a control system, wherein the metal powder storage system is a box type storage, a plurality of metal powder storage bins are arranged at the top of the box type storage, flow control valves are arranged at the bottoms of the metal powder storage bins, a powder mixer is arranged below the flow control valves, a stirring device is arranged in the powder mixer, a discharge port of the powder mixer is communicated with the microwave melting system through the feeding pipeline, and a control panel is further arranged on the box type storage; the microwave melt system comprises an outer shell and rollers, wherein the outer shell and the rollers are coaxially arranged, wave-absorbing materials are coated on the outer side walls of the rollers, a feed inlet is formed in the upper part of the outer shell, a first material baffle is arranged at the feed inlet, a discharge outlet is formed in the lower part of the outer shell, a second material baffle is arranged at the discharge outlet, the first material baffle, the second material baffle, the outer shell and the rollers surround a packing area, and microwave generators are uniformly distributed on the outer side walls of the outer shell corresponding to the packing area; the discharge port of the outer shell is connected with a blank drawing device through a material conveying pipeline; a cooling system is arranged on the outer side wall of the material conveying pipeline; the middle part of the filling area is connected with an air exhaust pipeline which is connected with a vacuum pump; the control system is in signal connection with the control panel and the microwave melt system.
The further technical proposal is that the filler area accounts for 40 to 45 percent of the area of the outer side wall of the roller.
A further technical scheme is that a scraper is further arranged at a discharge outlet at the lower part of the outer shell, and the gap between the scraper and the roller is 0.1-0.2 mm.
The further technical scheme is that the included angle between the scraper and the second baffle plate is 20-35 degrees, and a material receiving device is arranged below the scraper.
The further technical scheme is that the section of the metal powder storage bin is in a regular hexagon shape.
The invention also discloses a method for rapidly preparing the multielement alloy material with continuously changed components by microwave, which comprises the following steps:
(1) the metal powder with different components is respectively stored in different metal powder storage bins, the metal powder is proportionally sent into a powder mixer through a flow control valve to be uniformly mixed, and the metal powder is sent into a filling area through a feeding pipeline;
(2) the metal powder is heated by microwave in the filling area and then melted to obtain alloy melt, the alloy melt flows under the rotation of the roller, is gradually condensed under the action of a cooling system after being vacuumized, and synchronously enters a blank drawing device to obtain the alloy material with continuously changed components.
The further technical proposal is that the protective atmosphere of the powder mixer adopts N2Or Ar.
The further technical scheme is that the power of the microwave generator is 0-80 kW, and the temperature of the melting stock is less than or equal to 1200 DEG C
The further technical proposal is that the metal powder storage bin is single metal powder, and the grain diameter is less than or equal to 100 μm.
The further technical scheme is that the rotating speed of the roller is 2-10 rpm.
The working principle is as follows: under the action of the flow control valve, metal powder with different components is sent into the powder mixer in proportion, and is uniformly mixed by the stirring device 5 in a protective atmosphere and then enters the filler area through the feeding pipeline, the wave absorbing material on the roller absorbs the emission wave of the microwave generator to heat the metal powder, meanwhile, the metal powder has small granularity, the microwave penetration depth is equivalent to the particle size, vortex current is formed on the surface of the particle, and the vortex current is consumed to generate heat to rapidly melt the metal powder, so that the metal powder is uniformly sintered and melted as a whole. The molten metal in a molten state moves downwards to an air exhaust pipeline along with the roller, is vacuumized by a vacuum pump, is delivered to a discharge port after bubbles in the molten metal are eliminated, is slowly condensed and enters a blank drawing device through a material delivery pipeline, and the alloy material with continuously changed components is obtained.
Compared with the prior art, the invention has the beneficial effects that:
1. through microwave rapid heating melting metal powder, the programming rate is faster than traditional heat treatment mode, is heated more evenly.
2. The metal melt is treated by vacuumizing, so that the solidification and forming effects are better, and the performance of the obtained alloy material is better.
3. Feeding in a roller manner to enable the feeding speed to be controllable; the filler area is arranged for melting and sintering the metal powder, and the non-filler area can cool the metal powder, so that the service life of the roller is prolonged; and a scraper is arranged at the discharge port to remove residues adhered to the surface of the roller.
4. The metal powder storage bin is arranged in the shape of a regular hexagon section, the section is a honeycomb surface after a plurality of combinations, the space is greatly saved, and the number of the metal powder storage bins arranged in the same space is large.
5. By utilizing the device, the idea of high flux is utilized, and under the condition of a single experiment, the preparation of the multi-element alloy material can be realized at one time, the experimental data of continuous change of multi-element components is obtained, the experimental efficiency is greatly improved, and the experimental cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional view illustrating the installation of the metal powder storage container according to the present invention.
Wherein: 1-a feeding pipeline, 2-a metal powder storage bin, 3-a flow control valve, 4-a powder mixer, 5-a stirring device, 6-a control panel, 7-an outer shell, 8-a roller, 9-a first baffle plate, 10-a second baffle plate, 11-a filling area, 12-a microwave generator, 13-a material conveying pipeline, 14-a blank drawing device, 15-a cooling system, 16-an air exhaust pipeline, 17-a vacuum pump and 18-a scraper.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Fig. 1 shows a device for microwave rapid preparation of a multi-component alloy material with continuously changing components, which comprises a metal powder storage system, a feeding pipeline 1, a microwave melting system and a control system, wherein the metal powder storage system is a box-type storage, a plurality of metal powder storage bins 2 are arranged at the top of the box-type storage, metal powder with single element is stored in the metal powder storage bins 2, and for convenience in installation, as shown in fig. 2, the cross section of the metal powder storage bins 2 is regular hexagon, so that the number of the metal powder storage bins 2 arranged in the same area is more. The bottom of each metal powder storage bin 2 is provided with a flow control valve 3, a powder mixer 4 is arranged below the flow control valve 3, a stirring device 5 is arranged in the powder mixer 4, and a control panel 6 is further arranged on the box type storage.
Microwave melt system includes shell body 7, gyro wheel 8, and shell body 7 and the coaxial setting of gyro wheel 8, shell body 7 pass through the stabilizer blade to be fixed subaerial, and gyro wheel 8 passes through motor drive rotation. In order to facilitate microwave heating, the outer side wall of the roller 8 is coated with wave-absorbing materials. The upper part of the outer shell 7 is provided with a feed inlet, and a discharge port of the powder mixer 4 is connected with the feed inlet of the outer shell 7 through a feed pipeline 1. The feeding port is provided with a first material baffle 9, the lower part of the outer shell 7 is provided with a discharging port, the discharging port is provided with a second material baffle 10, and the first material baffle 9, the second material baffle 10, the outer shell 7 and the roller 8 surround a filler area 11. In order to facilitate heat dissipation and cooling and prolong the service life of the roller 8, the filler area 11 accounts for 40% -45% of the area of the outer side wall of the roller 8. Meanwhile, microwave generators 12 are uniformly distributed on the outer side wall of the outer shell 7 corresponding to the filling area 11. The discharge port at the lower part of the outer shell 7 is connected with a blank drawing device 14 through a material conveying pipeline 13. The outer side wall of the conveying pipeline 13 is provided with a cooling system 15, and in order to achieve a better cooling effect, the discharge port of the outer shell 7 is also provided with the cooling system 15 for precooling. The middle part of the filling area 11 is connected with an air exhaust pipeline 16, and the air exhaust pipeline 16 is connected with a vacuum pump 17. The control system is in signal connection with the control panel 6, the microwave generator 12 and the driving motor of the roller 8.
In order to facilitate cleaning of residues adhered to the outer side wall of the roller 8, a scraper 18 is further arranged on the other side of the discharge hole of the outer shell 7, and the gap between the scraper 18 and the roller 8 is 0.1-0.2 mm. The scraper 18 and the second baffle 10 are arranged oppositely, the included angle between the scraper 18 and the second baffle 10 is 20-35 degrees, and a material receiving device is arranged below the scraper 18. The clearance of the roller 8 of the scraper 18 is too large to effectively remove adhesive substances, and the clearance is too small to easily scrape the surface layer of the roller 8 and damage the wave-absorbing material layer coated on the surface layer.
The method for rapidly preparing the multielement alloy material with continuously changed components by using the device comprises the following steps:
(1) the metal powder with different components is respectively stored in different metal powder storage bins 2, the metal powder storage bins 2 are single metal powder, and the grain diameter is less than or equal to 100 mu m.
(2) The metal powder is proportionally sent into a powder mixer 4 through a flow control valve 3 to be uniformly mixed and then is sent into a filling area 11 through a feeding pipeline 1. The protective atmosphere in the powder mixer 4 is N2Or Ar.
(3) The metal powder is heated by microwave in the filling area 11 and then melted to obtain an alloy melt, the power of the microwave generator 12 is 0-80 kW, the adjustment can be carried out according to real-time temperature feedback, and the temperature of the melt in the filling area 11 is less than or equal to 1200 ℃.
(4) The metal melt flows under the rotation of the roller 8, is gradually condensed under the action of a cooling system 15 after being vacuumized, and synchronously enters a throwing device 14 to obtain an alloy material with continuously changed components; in the process, the rotating speed of the roller 8 is controlled to be 2-10 rpm.
Use example 1
Weighing 200 meshes of 5kg of metal pure aluminum powder and 200 meshes of 2kg of metal pure tin powder. The raw material powder is respectively put into a metal powder storage bin 2 in a box type storage for standby.
The flow control valve 3 is controlled by the control system, so that the powder flowing speeds in the two metal powder storage bins 2 are different, and meanwhile, the stirring device 5 in the powder mixer 4 is controlled to rotate, and the powder with the Sn content varying from 0% to 10% and fully mixed with the Al-Sn metal is obtained.
At the same time, the control roller 8 rotates and the mixed powder enters the filling zone 11 through the feed line 1. The microwave generator 12 is controlled to heat the powder and the powder flows downwards under the driving of the rotation of the roller 8, when the roller 8 passes through the scraper 18, the adhered substances adhered on the roller 8 are scraped, and simultaneously, the vacuum pump 17 vacuumizes the raw material in a molten state, so that the metal melt flows through the cooling system 15 from the discharge hole. The microwave treatment power was 30kW and the drum speed was 2 rpm.
When the molten metal reaches the discharge port, the speed of the blank drawing device 14 is controlled, and under the action of the cooling system 15, the formed high-flux sample has no slag inclusion and no air hole inside, and the obtained finished product is as follows: the alloy bar material has a continuously changing Al-Sn composition and a Sn content ranging from 0% to 7%.
Use example 2
Weighing 600 meshes of 5kg of metal pure aluminum powder, 600 meshes of 1.5kg of metal pure magnesium powder, 600 meshes of 1.5kg of metal pure gallium powder and 600 meshes of 1.5kg of metal pure tin powder. The raw material powder is respectively put into a metal powder storage bin 2 in a box type storage for standby.
The flow control valves 3 are controlled by a control system, so that the powder flowing speeds in the four metal powder storage bins 2 are different, and meanwhile, the stirring device 5 in the powder mixer 4 is controlled to rotate, and further, the powder with the content of Mg, Ga and Sn which is fully mixed by Al-Mg-Ga-Sn metal and the content of Ga is changed from 0% to 5% is obtained.
At the same time, the control roller 8 rotates and the mixed powder enters the filling zone 11 through the feed line 1. The microwave generator 12 is controlled to heat the powder and the powder flows downwards under the driving of the rotation of the roller 8, when the roller 8 passes through the scraper 18, the adhered substances adhered on the roller 8 are scraped, and simultaneously, the vacuum pump 17 vacuumizes the raw material in a molten state, so that the raw material flows through the cooling system 15 from the discharge hole. The microwave treatment power was 50kW, the drum rotation speed was 5rpm, and the treatment time was 5 min.
When the molten metal reaches the discharge port, the speed of the blank drawing device 14 is controlled, and under the action of the cooling system 15, the formed high-flux sample has no slag inclusion and no air hole inside, and the obtained finished product is as follows: the components of the alloy bar are Mg, Ga and Sn, the contents of the Al-Mg-Ga-Sn are changed from 0 percent to 5 percent, and the components of the alloy bar are continuously changed.
Use example 3
Weighing 200 meshes of 5kg of metal pure aluminum powder, 200 meshes of 2kg of metal pure magnesium powder, 200 meshes of 2kg of metal pure gallium powder, 200 meshes of 2kg of metal pure tin powder and 200 meshes of 2kg of metal pure indium powder. The raw material powder is respectively put into a metal powder storage bin 2 in a box type storage for standby.
The flow control valve 3 is controlled by the control system, so that the powder flowing speed In the five metal powder storage bins 2 is different, and the stirring device 5 In the powder mixer 4 is controlled to rotate, thereby obtaining the powder with fully mixed Al-Mg-Ga-Sn-In metal with the content of Mg, Ga, Sn and In varying from 0% to 8%.
At the same time, the control roller 8 rotates and the mixed powder enters the filling zone 11 through the feed line 1. The microwave generator 12 is controlled to heat the powder and the powder flows downwards under the driving of the rotation of the roller 8, when the roller 8 passes through the scraper 18, the adhered substances adhered on the roller 8 are scraped, and simultaneously, the vacuum pump 17 vacuumizes the raw material in a molten state, so that the raw material flows through the cooling system 15 from the discharge hole. The microwave treatment power was 50kW and the drum speed was 5 rpm.
When the molten metal reaches the discharge port, the speed of the blank drawing device 14 is controlled, and under the action of the cooling system 15, the formed high-flux sample has no slag inclusion and no air hole inside, and the obtained finished product is as follows: the components of the alloy bar are Mg, Ga, Sn and Al-Mg-Ga-Sn-In with the content of In changing from 0 percent to 8 percent and the composition of the alloy bar continuously changes.
Use example 4
Weighing 200 meshes of 5kg of metal pure aluminum powder, 200 meshes of 1kg of metal pure magnesium powder, 200 meshes of 1kg of metal pure gallium powder, 200 meshes of 1kg of metal pure tin powder, 200 meshes of 1kg of metal pure indium powder and 200 meshes of 1kg of metal pure manganese powder. The raw material powder is respectively put into a metal powder storage bin 2 in a box type storage for standby.
The flow control valve 3 is controlled by the control system, so that the powder flowing speed In the six metal powder storage bins 2 is different, and the stirring device 5 In the powder mixer 4 is controlled to rotate, thereby obtaining the powder with fully mixed Al-Mg-Ga-Sn-In-Mn metal with the content of Mg, Ga, Sn, In and Mn varying from 0 to 6 percent.
At the same time, the control roller 8 rotates and the mixed powder enters the filling zone 11 through the feed line 1. The microwave generator 12 is controlled to heat the powder and the powder flows downwards under the rotation driving of the roller 8, when the roller 8 passes through the scraper 18, the adhered matter adhered on the roller 8 is scraped, meanwhile, the vacuum pump 17 vacuumizes the raw material in the molten state, and then the raw material flows through the cooling system 15 from the discharge hole. The microwave treatment power was 60kW and the drum speed was 5 rpm.
When the molten metal reaches the discharge port, the speed of the blank drawing device 14 is controlled, and under the action of the cooling system 15, the formed high-flux sample has no slag inclusion and no air hole inside, and the obtained finished product is as follows: the components of the metal bar are Al-Mg-Ga-Sn-In-Mn with the contents of Mg, Ga, Sn, In and Mn changing from 0 to 6 percent and the components of the metal bar continuously change.
Use example 5
Weighing 400-mesh 4kg of metal pure aluminum powder, 400-mesh 0.5kg of metal pure magnesium powder, 400-mesh 0.5kg of metal pure gallium powder, 400-mesh 0.5kg of metal pure tin powder, 400-mesh 0.5kg of metal pure indium powder, 200-mesh 0.5kg of metal pure manganese powder and 400-mesh 0.5kg of metal pure zinc powder, and respectively putting the raw material powder into a metal powder storage bin 2 in a box type storage for later use.
The flow control valves 3 are controlled by a control system, so that the powder flowing speeds In the seven metal powder storage bins 2 are different, and meanwhile, the control console controls the stirring device 5 In the powder mixer 4 to rotate, so that the powder with fully mixed Al-Mg-Ga-Sn-In-Mn-Zn metals with the contents of Mg, Ga, Sn, In, Mn and Zn ranging from 0% to 9% is obtained.
At the same time, the control roller 8 rotates and the mixed powder enters the filling zone 11 through the feed line 1. The microwave generator 12 is controlled to heat the powder and the powder flows downwards under the driving of the rotation of the roller 8, when the roller 8 passes through the scraper 18, the adhered substances adhered on the roller 8 are scraped, and simultaneously, the vacuum pump 17 vacuumizes the raw material in a molten state, so that the raw material flows through the cooling system 15 from the discharge hole. The microwave treatment power was 80kW and the drum speed was 8 rpm.
When the molten metal reaches the discharge port, the speed of the blank drawing device 14 is controlled, and under the action of the cooling system 15, the formed high-flux sample has no slag inclusion and no air hole inside, and the obtained finished product is as follows: the components of the alloy bar are Al-Mg-Ga-Sn-In-Mn-Zn alloy bar with continuously changed components, wherein the contents of Mg, Ga, Sn, In, Mn and Zn are changed from 0 percent to 9 percent.
While the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the disclosure. More particularly, various variations and modifications are possible in the component parts or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts or arrangements, other uses will also be apparent to those skilled in the art.
Claims (10)
1. A device for rapidly preparing multi-element alloy material with continuously changed components by microwave is characterized in that: the microwave smelting device comprises a metal powder storage system, a feeding pipeline (1), a microwave smelting system and a control system, wherein the metal powder storage system is a box type storage, a plurality of metal powder storage bins (2) are arranged at the tops of the box type storage, flow control valves (3) are arranged at the bottoms of the metal powder storage bins (2), a powder mixer (4) is arranged below the flow control valves (3), a stirring device (5) is arranged in the powder mixer (4), a discharge hole of the powder mixer (4) is communicated with the microwave smelting system through the feeding pipeline (1), and a control panel (6) is further arranged on the box type storage; the microwave melting system comprises an outer shell (7) and rollers (8), wherein the outer shell (7) and the rollers (8) are coaxially arranged, wave-absorbing materials are coated on the outer side wall of the rollers (8), a feeding hole is formed in the upper portion of the outer shell (7), a first material baffle plate (9) is arranged at the feeding hole, a discharging hole is formed in the lower portion of the outer shell (7), a second material baffle plate (10) is arranged at the discharging hole, the first material baffle plate (9), the second material baffle plate (10), the outer shell (7) and the rollers (8) are encircled to form a filling area (11), and microwave generators (12) are uniformly distributed on the outer side wall of the outer shell (7) corresponding to the filling area (11); the discharge port of the outer shell (7) is connected with a blank drawing device (14) through a material conveying pipeline (13); a cooling system (15) is arranged on the outer side wall of the material conveying pipeline (13); the middle part of the filling area (11) is connected with an air exhaust pipeline (16), and the air exhaust pipeline (16) is connected with a vacuum pump (17); the control system is in signal connection with the control panel (6) and the microwave melt system.
2. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components as claimed in claim 1, wherein: the filling area (11) accounts for 40-45% of the area of the outer side wall of the roller (8).
3. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components as claimed in claim 1, wherein: the lower part of the outer shell (7) is also provided with a scraper (18), and the gap between the scraper (18) and the roller (8) is 0.1-0.2 mm.
4. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components as claimed in claim 3, wherein: the included angle between the scraper (18) and the second material blocking plate (10) is 20-35 degrees, and a material receiving device is arranged below the scraper (18).
5. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components as claimed in claim 1, wherein: the section of the metal powder storage bin (2) is in a regular hexagon shape.
6. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components as claimed in claim 1, wherein: the method for rapidly preparing the multielement alloy material with continuously changed components by the device comprises the following steps:
(1) metal powder with different components is respectively stored in different metal powder storage bins (2), the metal powder is sent into a powder mixer (4) by a flow control valve (3) in proportion and uniformly mixed, and the metal powder is sent into a filling area (11) by a feeding pipeline (1);
(2) the metal powder is heated by microwave in the filling area (11) and then melted to obtain an alloy melt, the alloy melt flows under the rotation of the roller (8), is gradually condensed under the action of a cooling system (15) after being vacuumized, and synchronously enters the blank drawing device (14) to obtain the alloy material with continuously changed components.
7. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components according to claim 7, wherein: the protective atmosphere of the powder mixer (4) adopts N2Or Ar.
8. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components according to claim 7, wherein: the power of the microwave generator (12) is 0-80 kW, and the melting temperature is less than or equal to 1200 ℃.
9. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components according to claim 7, wherein: the metal powder storage bin (2) is single metal powder, and the particle size is less than or equal to 100 mu m.
10. The device for microwave rapid preparation of multicomponent alloy material with continuously changed components according to claim 7, wherein: the rotating speed of the roller (8) is 2-10 rpm.
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