CN113755701A - Degassing method in aluminum alloy argon refining process - Google Patents
Degassing method in aluminum alloy argon refining process Download PDFInfo
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- CN113755701A CN113755701A CN202111063788.7A CN202111063788A CN113755701A CN 113755701 A CN113755701 A CN 113755701A CN 202111063788 A CN202111063788 A CN 202111063788A CN 113755701 A CN113755701 A CN 113755701A
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 64
- 238000007872 degassing Methods 0.000 title claims abstract description 64
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007670 refining Methods 0.000 title claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 91
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 91
- 239000010439 graphite Substances 0.000 claims abstract description 91
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 239000007789 gas Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 11
- 239000001257 hydrogen Substances 0.000 claims abstract description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 10
- 230000000630 rising effect Effects 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 238000000746 purification Methods 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims abstract description 4
- 238000001179 sorption measurement Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 38
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- -1 meanwhile Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/064—Obtaining aluminium refining using inert or reactive gases
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/006—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with use of an inert protective material including the use of an inert gas
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a degassing method in an aluminum alloy argon refining process, which comprises the following specific operation steps: the aluminum alloy liquid is put into a degassing cylinder, then the degassing cylinder is placed in a degassing device, a graphite rotor rotating in operation crushes inert gas argon blown into the aluminum alloy liquid into a large amount of dispersed bubbles, the dispersed bubbles are dispersed in the aluminum alloy liquid, the bubbles in the molten liquid absorb hydrogen in the molten liquid by virtue of gas partial pressure difference and surface adsorption principle, adsorb oxidation slag inclusion and are taken out of the surface of the molten liquid along with the rising of the bubbles, so that the molten liquid is purified, and the bubbles are uniformly mixed with the rotating molten liquid due to fine dispersion and rotate along with the rotating molten liquid to slowly float upwards spirally, and cannot form airflow generated by continuous linear rising when contacting the molten liquid, thereby realizing purification and degassing of the aluminum alloy liquid; air between the spherical air bag and the liquid level of the aluminum alloy liquid is pumped out, so that the aluminum alloy liquid is prevented from fully contacting with the external air during degassing, and the degassing is fully and thoroughly ensured.
Description
Technical Field
The invention relates to the technical field of aluminum alloy processing, in particular to a degassing method in an aluminum alloy argon refining process.
Background
Alloy products are more and more widely applied, and along with the continuous development of high and new technologies in recent years, a large amount of aluminum alloy castings are used in locomotives in the field of aviation and high-speed railways, and aluminum alloy melts contain a large amount of hydrogen, metal and nonmetal impurities; if the harmful substances cannot be removed in time before casting, casting defects such as air holes, inclusions, looseness and the like can be formed in and on the casting, and the physical, chemical, mechanical and various deep processing performances of the casting are seriously influenced.
When aluminium alloy liquid carries out the degasification through gas removal equipment, blow in the inefficiency of inert gas argon gas through single graphite rotor this moment, and this kind of degasification mode constantly carries out the degasification to the aluminium alloy liquid in middle part in the degassing cylinder, causes the inhomogeneous of degasification easily.
Disclosure of Invention
The invention aims to provide a degassing method in an aluminum alloy argon refining process, which solves the technical problems that when aluminum alloy liquid is degassed through a degassing device, the efficiency of blowing inert gas argon through a single graphite rotor is low, and the degassing mode is used for continuously degassing the aluminum alloy liquid in the middle in a degassing cylinder, so that the degassing is easy to be uneven.
In order to achieve the purpose, the invention adopts the following technical scheme:
a degassing method in an aluminum alloy argon refining process comprises the following specific operation steps:
the aluminum alloy liquid is put into a degassing cylinder, then the degassing cylinder is placed in a degassing device, a graphite rotor rotating in operation crushes inert gas argon blown into the aluminum alloy liquid into a large amount of dispersed bubbles, the dispersed bubbles are dispersed in the aluminum alloy liquid, the bubbles in the molten liquid absorb hydrogen in the molten liquid by virtue of gas partial pressure difference and surface adsorption principle, the hydrogen adsorbs oxidation slag inclusion, the hydrogen is taken out of the surface of the molten liquid along with the rising of the bubbles, the molten liquid is purified, and the bubbles are uniformly mixed with the rotating molten liquid due to fine dispersion and rotate along with the molten liquid to slowly float upwards spirally, and airflow generated by continuous linear rising cannot be formed when the bubbles are contacted with the molten liquid, so that the purification and degassing of the aluminum alloy liquid are realized.
Preferably, the degassing device comprises an adjusting seat, a lifting transmission seat is slidably mounted on the side wall of the adjusting seat, a first graphite rotor is rotatably mounted at the top of the lifting transmission seat in a penetrating manner, a plug is mounted at the top of the first graphite rotor, a pressure rod is mounted at the outer end of the lifting transmission seat through a supporting plate, a telescopic end at the bottom of the pressure rod is connected with a movable plate, a first conduction seat is mounted in the middle of the movable plate, a spherical airbag is mounted at the bottom of the movable plate, a fixed plate is mounted at the bottom of the spherical airbag, a plurality of connecting guide rods are mounted at the bottom of the lifting transmission seat, penetrate through the first conduction seat and are connected with the fixed plate through the spherical airbag, and the first graphite rotor penetrates through the first conduction seat, the spherical airbag, the fixed plate and a second conduction seat;
the side groove has been seted up in the fixed plate outside, the inside slidable mounting in side groove has first slider, the second switches on the seat is installed to first slider bottom, the second switches on the inside rotation that runs through of seat and installs second graphite rotor, the gas pocket has all been run through to first graphite rotor and second graphite rotor inside and has been seted up, the gas seat is installed to the fixed plate bottom side.
Preferably, the U-shaped seat is installed to the regulation seat bottom side, the spout has been seted up to the regulation seat lateral wall, adjust the seat top and install first motor, the threaded rod is installed to first motor output position in the spout, and threaded connection in threaded rod and the regulation seat.
Preferably, the speed reducer is installed on lift transmission seat top, the speed reducer input is connected with the second motor output, the speed reducer output just is located lift transmission seat internally mounted and has the action wheel, first graphite rotor and lift transmission seat bearing are connected, the first graphite rotor outside just is located lift transmission seat internally mounted and has from the driving wheel, and passes through the drive belt transmission from driving wheel and action wheel.
Preferably, a plurality of connecting holes are horizontally formed in the air hole of the first graphite rotor, the second connecting hole is communicated with the second connecting hole, and the second connecting hole and the third connecting holes are communicated with each other through connecting pipes.
Preferably, the first inside passageway top of switching on seat and the inside seting up of first graphite rotor switches on, the first seat outside of switching on passes through the connecting pipe turn-on connection with the air pump, a plurality of inside groove has been seted up to the inside equidistance of fixed plate, and inside groove and gas holder all switch on through connecting channel and control valve with the inside passageway bottom.
Preferably, a piston is slidably mounted in the inner groove, the piston is connected with one end of a movable rod, and the other end of the movable rod is connected with the first sliding block.
Preferably, the bottom side of the fixing plate is symmetrically provided with adjusting grooves, sliding rods are arranged in the adjusting grooves, springs and second sliding blocks are sleeved on the outer sides of the sliding rods, and third chain wheels are arranged on the bottom sides of the second sliding blocks through rotating shafts.
Preferably, a first chain wheel is installed on the outer side of the first graphite rotor, a second chain wheel is installed on the outer side of the second graphite rotor, and the first chain wheel, the second chain wheel and the third chain wheel are connected through chain transmission.
Preferably, the first conduction seat and the second conduction seat are connected with the first graphite rotor through a sealing bearing, the length of the first conduction seat is larger than that of the movable plate, and the third conduction seat is connected with the second graphite rotor through a sealing bearing.
The invention has the beneficial effects that: the second motor drives the driving wheel to rotate, the driving wheel and the first graphite rotor are driven to rotate by the driving belt, the first chain wheel on the first graphite rotor synchronously rotates at the moment, the second graphite rotor is driven to rotate on the first sliding block by the matching of the chain, the second chain wheel and the third chain wheel, argon enters the air hole of the first graphite rotor from the plug, passes through the connecting hole, the second conduction seat, the connecting pipe and the third conduction seat and enters the air hole of the second graphite rotor, the inert gas argon blown into the aluminum alloy liquid is crushed into a large amount of dispersed bubbles by the first graphite rotor and the second graphite rotor, and is dispersed in the aluminum alloy liquid, meanwhile, air is pressed into the inner groove through the inner channel and the control valve by the working of the air pump, so that the piston is driven to move, the movable rod is stretched in the inner groove, the first sliding block moves in the side groove, and the position of the second graphite rotor is continuously adjusted, argon is simultaneously crushed into a large number of dispersed bubbles through the first graphite rotor and the plurality of moving second graphite rotors, so that the degassing efficiency is greatly improved, and the aluminum alloy liquid at each part in the degassing cylinder is fully degassed;
in the adjusting process, the second sliding block slides on the sliding rod of the adjusting groove, and the chain is always kept in a tight state through the elastic deformation of the spring, so that the transmission connection among the first chain wheel, the second chain wheel and the third chain wheel is realized;
first graphite rotor and second graphite rotor are located inside the aluminum alloy liquid, and the fixed plate is located aluminum alloy liquid level top, drive the fly leaf decline through the air pressure lever this moment, and first conduction seat moves down along first graphite rotor, and then flatten elastic spherical gasbag between fly leaf and fixed plate, the middle part external diameter grow gradually of spherical gasbag, with degassing section of thick bamboo inner wall in close contact with, work through the air pump this moment, be connected with the air holder through inside passage and control valve, and then take out the air between spherical gasbag and aluminum alloy liquid level, when avoiding the degassing, aluminum alloy liquid and outside air fully contact, guarantee the abundant thoroughly of degassing.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side sectional view of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of area B of FIG. 2 in accordance with the present invention;
FIG. 5 is a partial cross-sectional view of a fixation plate of the present invention;
FIG. 6 is a schematic view of the drive configuration of the first, second and third sprockets of the present invention.
Illustration of the drawings:
1. an adjusting seat; 2. a U-shaped seat; 3. a lifting transmission seat; 4. a chute; 5. a threaded rod; 6. a first motor; 7. a first graphite rotor; 8. a speed reducer; 9. a second motor; 10. a driving wheel; 11. a driven wheel; 12. a plug; 13. a pneumatic rod; 14. a movable plate; 15. a spherical air bag; 16. a fixing plate; 17. a first conduction seat; 18. connecting the guide rod; 19. air holes; 20. connecting holes; 21. a second conduction seat; 22. an internal channel; 23. an inner tank; 24. an air seat; 25. a piston; 26. a movable rod; 27. a side groove; 28. a first slider; 29. a second graphite rotor; 30. a third conduction seat; 31. an adjustment groove; 32. a slide bar; 33. a spring; 34. a second slider; 35. a first sprocket; 36. a second sprocket; 37. a third sprocket.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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.
Specific examples are given below.
Referring to fig. 1-6, a degassing method in an argon refining process of aluminum alloy comprises the following specific operation steps:
the aluminum alloy liquid is put into a degassing cylinder, then the degassing cylinder is placed in a degassing device, a graphite rotor rotating in operation crushes inert gas argon blown into the aluminum alloy liquid into a large amount of dispersed bubbles, the dispersed bubbles are dispersed in the aluminum alloy liquid, the bubbles in the molten liquid absorb hydrogen in the molten liquid by virtue of gas partial pressure difference and surface adsorption principle, the hydrogen adsorbs oxidation slag inclusion, the hydrogen is taken out of the surface of the molten liquid along with the rising of the bubbles, the molten liquid is purified, and the bubbles are uniformly mixed with the rotating molten liquid due to fine dispersion and rotate along with the molten liquid to slowly float upwards spirally, and airflow generated by continuous linear rising cannot be formed when the bubbles are contacted with the molten liquid, so that the purification and degassing of the aluminum alloy liquid are realized.
As an embodiment of the invention, the degassing device comprises an adjusting seat 1, a lifting transmission seat 3 is slidably mounted on the side wall of the adjusting seat 1, a first graphite rotor 7 is rotatably mounted on the top of the lifting transmission seat 3 in a penetrating manner, a plug 12 is mounted on the top of the first graphite rotor 7, an air pressure rod 13 is mounted at the outer end of the lifting transmission seat 3 through a support plate, a telescopic end of the bottom of the air pressure rod 13 is connected with a movable plate 14, a first conduction seat 17 is mounted in the middle of the movable plate 14, a spherical airbag 15 is mounted on the bottom side of the movable plate 14, a fixed plate 16 is mounted on the bottom side of the spherical airbag 15, a plurality of connecting guide rods 18 are mounted on the bottom side of the lifting transmission seat 3, the connecting guide rods 18 penetrate through the first conduction seat 17 and the spherical airbag 15 to be connected with the fixed plate 16, and the first graphite rotor 7 penetrates through the first conduction seat 17, the spherical airbag 15, the fixed plate 16 and a second conduction seat 21;
As an implementation mode of the invention, a U-shaped seat 2 is installed at the bottom side of an adjusting seat 1, a sliding groove 4 is formed in the side wall of the adjusting seat 1, a first motor 6 is installed at the top end of the adjusting seat 1, a threaded rod 5 is installed at the output end of the first motor 6, which is located in the sliding groove 4, the threaded rod 5 is in threaded connection with the inner end of the adjusting seat 1, and the threaded rod 5 is driven to rotate by the operation of the first motor 6, so that a lifting transmission seat 3 in threaded connection is driven to lift in the sliding groove 4.
As an embodiment of the present invention, a speed reducer 8 is installed at the top end of the lifting transmission seat 3, an input end of the speed reducer 8 is connected with an output end of a second motor 9, a driving wheel 10 is installed at an output end of the speed reducer 8 and located inside the lifting transmission seat 3, the first graphite rotor 7 is connected with a bearing of the lifting transmission seat 3, a driven wheel 11 is installed at an outer side of the first graphite rotor 7 and located inside the lifting transmission seat 3, the driven wheel 11 and the driving wheel 10 are transmitted through a transmission belt, the second motor 9 drives the driving wheel 10 to rotate, and the driven wheel 11 and the first graphite rotor 7 are driven to rotate through the transmission belt.
In an embodiment of the present invention, a plurality of connection holes 20 are horizontally formed in the air hole 19 of the first graphite rotor 7, the connection holes 20 are connected to the second conduction seats 21, and the second conduction seats 21 and the third conduction seats 30 are connected to each other by a connection pipe, so that argon gas can be conveniently circulated through the air holes 19 of the first graphite rotor 7 and the second graphite rotor 29, and the inert gas argon gas in the aluminum alloy liquid is broken into a large number of dispersed bubbles.
As an embodiment of the invention, the first conduction seat 17 is conducted with the top end of an internal channel 22 arranged in the first graphite rotor 7, the outer side of the first conduction seat 17 is conducted with an air pump through a connecting pipe, a plurality of internal grooves 23 are arranged in the fixed plate 16 at equal angles, the internal grooves 23 and the air seats 24 are both conducted with the bottom end of the internal channel 22 through a connecting channel and a control valve, a piston 25 is slidably arranged in the internal groove 23, the piston 25 is connected with one end of a movable rod 26, the other end of the movable rod 26 is connected with a first slide block 28, the air pump works, the internal channel 22 and the control valve are connected with the air seats 24, air between the spherical air bag 15 and the liquid level of the aluminum alloy liquid is pumped out, the air is pressed into the internal groove 23 through the internal channel 22 and the control valve, the piston 25 is driven to move, the movable rod 26 is stretched in the internal groove 23, the first slide 28 translates within the side groove 27, continuously adjusting the position of the second graphite rotor 29.
In an embodiment of the present invention, the bottom side of the fixed plate 16 is symmetrically provided with an adjusting groove 31, a sliding rod 32 is installed inside the adjusting groove 31, a spring 33 and a second slider 34 are sleeved outside the sliding rod 32, a third sprocket 37 is installed on the bottom side of the second slider 34 through a rotating shaft, a first sprocket 35 is installed outside the first graphite rotor 7, a second sprocket 36 is installed outside the second graphite rotor 29, the first sprocket 35, the second sprocket 36 and the third sprocket 37 are connected through chain transmission, the second slider 34 slides on the sliding rod 32 of the adjusting groove 31, the chain is always kept in a tight state through elastic deformation of the spring 33, and transmission connection among the first sprocket 35, the second sprocket 36 and the third sprocket 37 is realized.
In one embodiment of the present invention, the first and second conduction seats 17 and 21 are connected to the first graphite rotor 7 through a sealed bearing, and the length of the first conduction seat 17 is greater than the moving length of the movable plate 14, and the third conduction seat 30 and the second graphite rotor 29 are connected through a sealed bearing, so that the conduction connection of the components is ensured during the movement of the device.
The working principle of the degassing device is as follows: putting aluminum alloy liquid into a degassing cylinder, then placing the degassing cylinder in a degassing device, driving a threaded rod 5 to rotate by the work of a first motor 6 at the moment, further driving a lifting transmission seat 3 in threaded connection to lift in a chute 4 until a first graphite rotor 7 and a second graphite rotor 29 are positioned in the aluminum alloy liquid, positioning a fixed plate 16 above the liquid level of the aluminum alloy liquid, driving a movable plate 14 to descend by a pneumatic rod 13 at the moment, moving a first conduction seat 17 downwards along the first graphite rotor 7, further flattening an elastic spherical air bag 15 between the movable plate 14 and the fixed plate 16, gradually increasing the outer diameter of the middle part of the spherical air bag 15, closely contacting with the inner wall of the degassing cylinder, working by an air pump, connecting with an air seat 24 through an internal channel 22 and a control valve, further pumping out air between the spherical air bag 15 and the liquid level of the aluminum alloy liquid, driving a driving wheel 10 to rotate by a second motor 9 at the moment, the driven wheel 11 and the first graphite rotor 7 are driven to rotate by a driving belt, at the moment, the first chain wheel 35 on the first graphite rotor 7 synchronously rotates, the second graphite rotor 29 is driven to rotate on the first sliding block 28 by the matching of a chain, the second chain wheel 36 and the third chain wheel 37, argon enters the air hole 19 of the first graphite rotor 7 from the plug 12, passes through the connecting hole 20, the second conduction seat 21, the connecting pipe and the third conduction seat 30 and enters the air hole 19 of the second graphite rotor 29, the inert gas argon blown into the aluminum alloy liquid is crushed into a large amount of dispersed bubbles by the first graphite rotor 7 and the second graphite rotor 29, the dispersed bubbles are dispersed in the aluminum alloy liquid, meanwhile, air is pressed into the inner groove 23 through the inner channel 22 and the control valve by the working of an air pump, the piston 25 is driven to move, the movable rod 26 is stretched in the inner groove 23, the first sliding block 28 moves in the side groove 27, the position of the second graphite rotor 29 is continuously adjusted, and in the adjusting process, the second slide block 34 slides on the slide rod 32 of the adjusting groove 31, the chain is always kept in a tight state through the elastic deformation of the spring 33, and the transmission connection among the first chain wheel 35, the second chain wheel 36 and the third chain wheel 37 is realized.
The driving wheel 10 is driven to rotate by the second motor 9, the driven wheel 11 and the first graphite rotor 7 are driven to rotate by the driving belt, at the moment, the first chain wheel 35 on the first graphite rotor 7 synchronously rotates, the second graphite rotor 29 is driven to rotate on the first slide block 28 by the matching of a chain, the second chain wheel 36 and the third chain wheel 37, argon enters the air hole 19 of the first graphite rotor 7 from the plug 12, passes through the connecting hole 20, the second conduction seat 21, the connecting pipe and the third conduction seat 30 and enters the air hole 19 of the second graphite rotor 29, the inert gas argon blown into the aluminum alloy liquid is crushed into a large amount of dispersed bubbles by the first graphite rotor 7 and the second graphite rotor 29, and is dispersed in the aluminum alloy liquid, meanwhile, air is pressed into the inner groove 23 through the inner channel 22 and the control valve by the working of the air pump, so as to drive the piston 25 to move, and realize the expansion and contraction of the movable rod 26 in the inner groove 23, the first sliding block 28 translates in the side groove 27, the position of the second graphite rotor 29 is continuously adjusted, argon is simultaneously crushed into a large number of dispersed bubbles through the first graphite rotor 7 and the plurality of moving second graphite rotors 29, degassing efficiency is greatly improved, and sufficient degassing of aluminum alloy liquid at each part in the degassing cylinder is guaranteed;
in the adjusting process, the second sliding block 34 slides on the sliding rod 32 of the adjusting groove 31, and the chain is always kept in a tight state through the elastic deformation of the spring 33, so that the transmission connection among the first chain wheel 35, the second chain wheel 36 and the third chain wheel 37 is realized;
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A degassing method in an aluminum alloy argon refining process is characterized by comprising the following specific operation steps:
the aluminum alloy liquid is put into a degassing cylinder, then the degassing cylinder is placed in a degassing device, a graphite rotor rotating in operation crushes inert gas argon blown into the aluminum alloy liquid into a large amount of dispersed bubbles, the dispersed bubbles are dispersed in the aluminum alloy liquid, the bubbles in the molten liquid absorb hydrogen in the molten liquid by virtue of gas partial pressure difference and surface adsorption principle, the hydrogen adsorbs oxidation slag inclusion, the hydrogen is taken out of the surface of the molten liquid along with the rising of the bubbles, the molten liquid is purified, and the bubbles are uniformly mixed with the rotating molten liquid due to fine dispersion and rotate along with the molten liquid to slowly float upwards spirally, and airflow generated by continuous linear rising cannot be formed when the bubbles are contacted with the molten liquid, so that the purification and degassing of the aluminum alloy liquid are realized.
2. The degassing method in the argon refining process of the aluminum alloy according to claim 1, wherein the degassing device comprises an adjusting seat (1), a lifting transmission seat (3) is slidably installed on the side wall of the adjusting seat (1), a first graphite rotor (7) is rotatably installed on the top of the lifting transmission seat (3) in a penetrating manner, a plug (12) is installed on the top of the first graphite rotor (7), an air pressure rod (13) is installed at the outer end of the lifting transmission seat (3) through a supporting plate, the bottom telescopic end of the air pressure rod (13) is connected with a movable plate (14), a first conduction seat (17) is installed in the middle of the movable plate (14), a spherical air bag (15) is installed on the bottom side of the movable plate (14), a fixing plate (16) is installed on the bottom side of the spherical air bag (15), and a plurality of connecting guide rods (18) are installed on the bottom side of the lifting transmission seat (3), the connecting guide rod (18) penetrates through the first conduction seat (17) and the spherical air bag (15) to be connected with the fixing plate (16), and the first graphite rotor (7) penetrates through the first conduction seat (17), the spherical air bag (15), the fixing plate (16) and the second conduction seat (21);
side groove (27) have been seted up in fixed plate (16) outside, inside slidable mounting in side groove (27) has first slider (28), first slider (28) bottom is installed the second and is led on seat (21), the second is led on seat (21) inside and is run through the rotation and install second graphite rotor (29), first graphite rotor (7) and second graphite rotor (29) inside all run through and set up gas pocket (19), gas holder (24) are installed to fixed plate (16) bottom side.
3. The degassing method for the aluminum alloy in the argon refining process according to claim 2, wherein the U-shaped seat (2) is installed at the bottom side of the adjusting seat (1), a sliding groove (4) is formed in the side wall of the adjusting seat (1), the first motor (6) is installed at the top end of the adjusting seat (1), the output end of the first motor (6) is located in the sliding groove (4) and is provided with a threaded rod (5), and the threaded rod (5) is in threaded connection with the inner end of the adjusting seat (1).
4. The degassing method in the argon refining process of the aluminum alloy as set forth in claim 2, wherein a speed reducer (8) is installed at the top end of the lifting transmission seat (3), the input end of the speed reducer (8) is connected with the output end of the second motor (9), a driving wheel (10) is installed at the output end of the speed reducer (8) and inside the lifting transmission seat (3), the first graphite rotor (7) is connected with the lifting transmission seat (3) through a bearing, a driven wheel (11) is installed at the outer side of the first graphite rotor (7) and inside the lifting transmission seat (3), and the driven wheel (11) and the driving wheel (10) are driven through a transmission belt.
5. The degassing method for the aluminum alloy in the argon refining process according to claim 2, wherein a plurality of connecting holes (20) are horizontally formed in the air holes (19) of the first graphite rotor (7), the connecting holes (20) are communicated with a second conducting seat (21), and the second conducting seat (21) and a plurality of third conducting seats (30) are respectively in conducting connection through connecting pipes.
6. The degassing method in the argon refining process of the aluminum alloy as claimed in claim 2, wherein the first conduction seat (17) is conducted with the top end of an internal passage (22) formed inside the first graphite rotor (7), the outer side of the first conduction seat (17) is conducted with the air pump through a connecting pipe, a plurality of internal grooves (23) are formed inside the fixing plate (16) at equal angles, and the internal grooves (23) and the air seats (24) are both conducted with the bottom end of the internal passage (22) through the connecting passage and the control valve.
7. A degassing method in an aluminum alloy argon refining process according to claim 6, characterized in that a piston (25) is slidably installed inside the inner groove (23), the piston (25) is connected with one end of a movable rod (26), and the other end of the movable rod (26) is connected with a first slide block (28).
8. The degassing method for the aluminum alloy in the argon refining process according to claim 2, wherein the bottom side of the fixed plate (16) is symmetrically provided with an adjusting groove (31), a sliding rod (32) is installed inside the adjusting groove (31), a spring (33) and a second sliding block (34) are sleeved outside the sliding rod (32), and a third chain wheel (37) is installed on the bottom side of the second sliding block (34) through a rotating shaft.
9. The degassing method in the argon refining process of the aluminum alloy according to the claim 2, characterized in that a first chain wheel (35) is installed on the outer side of the first graphite rotor (7), a second chain wheel (36) is installed on the outer side of the second graphite rotor (29), and the first chain wheel (35), the second chain wheel (36) and the third chain wheel (37) are connected through chain transmission.
10. The degassing method in the argon refining process of the aluminum alloy as claimed in claim 2, wherein the first conduction seat (17) and the second conduction seat (21) are connected with the first graphite rotor (7) through sealed bearings, the length of the first conduction seat (17) is larger than the moving length of the movable plate (14), and the third conduction seat (30) and the second graphite rotor (29) are connected through sealed bearings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111063788.7A CN113755701A (en) | 2021-09-10 | 2021-09-10 | Degassing method in aluminum alloy argon refining process |
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Cited By (1)
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| CN115958170A (en) * | 2022-05-24 | 2023-04-14 | 宣城建永精密金属有限公司 | Molten aluminum degassing device and degassing method |
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Application publication date: 20211207 |