CN115090859A - Air-permeable degassing and deslagging equipment in aluminum alloy flat ingot casting furnace - Google Patents
Air-permeable degassing and deslagging equipment in aluminum alloy flat ingot casting furnace Download PDFInfo
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- CN115090859A CN115090859A CN202210851548.1A CN202210851548A CN115090859A CN 115090859 A CN115090859 A CN 115090859A CN 202210851548 A CN202210851548 A CN 202210851548A CN 115090859 A CN115090859 A CN 115090859A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/003—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using inert gases
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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
- C22B9/006—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
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- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a ventilation degassing and deslagging device in an aluminum alloy flat ingot casting furnace in the technical field of smelting, which comprises a circular truncated cone-shaped gas storage box, wherein a driving motor is fixed at the center of the gas storage box, a rotary table is fixed at the output shaft end of the driving motor, a sealing ring is fixed at the top end of the gas storage box, the sealing ring is in clearance fit with the rotary table, a box cover is rotatably installed at the top end of the gas storage box, two rod sets are outwards arranged on the box cover from the center of the gas storage box, each rod set comprises more than two hollow rods which are rotatably installed along the circumferential direction of the gas storage box at equal intervals, and the bottom ends of the hollow rods are positioned in the gas storage box; the invention makes the contact between the inert gas bubbles and the aluminum liquid more sufficient by releasing the inert gas bubbles at the bottom end of the casting furnace in a rotating way, thereby improving the degassing and deslagging effects of the inert gas on the aluminum liquid.
Description
Technical Field
The invention relates to the technical field of smelting, in particular to a device for ventilating, degassing and deslagging in an aluminum alloy slab ingot casting furnace.
Background
An alloy based on aluminum with a certain amount of other alloying elements added is one of light metal materials. In addition to the general characteristics of aluminum, aluminum alloys have certain alloy specific characteristics due to the variety and amount of alloying elements added. Factors influencing the quality of aluminum and aluminum alloy are various, wherein the hydrogen content, impurities and alkali metal concentration of aluminum liquid are most important to influence the quality of the aluminum alloy.
The gas blowing method, also called floating method, is mainly to blow inert gas into the aluminum liquid to form many tiny bubbles. The initial pressure of hydrogen in the bubbles is zero, and the pressure difference of hydrogen exists on the interface of the bubbles and the aluminum liquid, so that the hydrogen dissolved in the aluminum liquid is continuously sucked into the bubbles, and the suction process is stopped until the pressure of the hydrogen in the bubbles is equal to that of the hydrogen in the aluminum liquid. After the bubbles float out of the liquid surface, hydrogen in the bubbles escapes and enters the atmosphere. In addition, the bubbles encounter oxide inclusions in the melt during their passage from the melt, and the inclusions are adsorbed on the surface of the bubbles and float up to the surface of the melt with the bubbles, thus being removed.
In the prior art, the air brick is arranged at the bottom of the furnace, and inert gas forms multi-path bubbles through the air brick to remove gas and slag from the aluminum liquid in the aluminum alloy casting furnace, so that the defects of easy blockage, aluminum liquid leakage, difficult maintenance, serious liquid level rolling, more slag formation and the like exist in the mode, and the quality of aluminum alloy slab ingot casting is directly influenced.
Based on the above, the invention designs a ventilation degassing and deslagging device in an aluminum alloy flat ingot casting furnace, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a gas-permeable degassing and deslagging device in an aluminum alloy slab ingot casting furnace, which aims to solve the problem that in the prior art, a gas permeable brick is arranged at the bottom of the furnace, inert gas passes through the gas permeable brick to form a multi-path bubble mode to degas and descale molten aluminum in the aluminum alloy casting furnace, and the mode has the defects of easy blockage, molten aluminum leakage, difficult maintenance, serious liquid level rolling, more slagging and the like, and the quality of aluminum alloy slab ingot casting is directly influenced.
In order to achieve the purpose, the invention provides the following technical scheme: a breathable degassing and deslagging device in an aluminum alloy slab ingot casting furnace comprises a round-table-shaped gas storage tank, wherein a driving motor is fixed at the center of a circle of the gas storage tank, a rotary table is fixed at the output end of the driving motor, a sealing ring is fixed at the top end of the gas storage tank, the sealing ring is in clearance fit with the rotary table, a tank cover is rotatably installed at the top end of the gas storage tank, two rod sets are outwards arranged on the tank cover from the center of the circle of the gas storage tank, each rod set comprises more than two hollow rods which are rotatably installed at equal intervals in the circumferential direction of the gas storage tank, the bottom ends of the hollow rods are located in the gas storage tank, a rod cover is fixed at the top ends of the hollow rods, more than two air holes are formed in the side wall of the rod cover in the circumferential direction of the hollow rods, a gas pipe is arranged in the gas storage tank, one end, far away from the gas storage tank, of the gas pipe is connected with an air compressor, and the hollow rods penetrate through the rotary table, a first gear is fixed on the side wall of the driving motor, a second gear is fixed on the side wall of the hollow rod, a third gear is fixed on the inner side wall of the sealing ring, the first gear is meshed with the second gear on the adjacent hollow rod, the third gear is meshed with the second gear on the adjacent hollow rod, and a foam breaking mechanism and a foam catching mechanism are arranged at the top end of the rotary table.
Preferably, garrulous bubble mechanism includes a pole, the carousel top is rotated and is installed a pole, the lateral wall of a pole is installed No. two more poles along its circumference equidistance rotation, No. two one ends that a pole was kept away from to the pole are fixed with the runner, the bottom and the laminating of carousel surface of gyro wheel, be fixed with two sleeves on No. two poles, the sleeve surface is fixed with the knife tackle more than two along its length direction, and every knife tackle includes the blade along sleeve circumference direction fixed connection.
Preferably, the bubble catching mechanism comprises a connecting plate, two connecting plates are fixed on the second rod, and a bubble catching plate is fixed on one side, close to the adjacent sleeve, of the connecting plate.
Preferably, the bubble catching plate is an arc-shaped plate and is located right above the sleeve, more than two baffles are fixed on the inner side wall of the bubble catching plate, and the baffles are used for blocking bubbles.
Preferably, an L-shaped mounting plate is fixed at one end of the connecting plate, which is far away from the bubble catching plate, and a brush handle is fixed at the bottom end of the mounting plate.
Preferably, the brush handle and the adjacent bubble catching plate are symmetrical along the center of the corresponding second rod, and the brush handle is made of a metal material.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention makes the contact between the inert gas bubbles and the aluminum liquid more sufficient by releasing the inert gas bubbles in a rotating way at the bottom end of the casting furnace, thereby improving the degassing and deslagging effects of the inert gas on the aluminum liquid.
2. According to the invention, by breaking the bubbles and increasing the retention time of the bubbles in the aluminum liquid, the aluminum liquid is more stable, and the aluminum liquid can be more fully refined.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a schematic illustration of an explosive structure according to the present invention;
FIG. 3 is a schematic diagram of the position relationship between the foam breaking mechanism and the foam catching mechanism
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is a schematic view showing the positional relationship between the second gear and the third gear;
in the drawings, the components represented by the respective reference numerals are listed below:
the air storage box comprises an air storage box 1, a driving motor 2, a rotary disc 3, a sealing ring 4, a box cover 5, a hollow rod 6, a rod cover 7, an air hole 8, a first gear 9, a second gear 10, a third gear 11, a first rod 12, a second rod 13, a rotating wheel 14, a sleeve 15, a blade 16, a connecting plate 17, a bubble catching plate 18, a baffle plate 19, an installing plate 20 and a brush handle 21.
Detailed Description
Referring to fig. 1-5, the present invention provides a technical solution: a breathable degassing and deslagging device in an aluminum alloy slab ingot casting furnace comprises a round-table-shaped gas storage tank 1, wherein a driving motor 2 is fixed at the circle center of the gas storage tank 1, a rotary table 3 is fixed at the output shaft end of the driving motor 2, a sealing ring 4 is fixed at the top end of the gas storage tank 1, the sealing ring 4 is in clearance fit with the rotary table 3, a tank cover 5 is rotatably installed at the top end of the gas storage tank 1, two rod sets are outwards arranged on the tank cover 5 from the circle center of the gas storage tank 1, each rod set comprises more than two hollow rods 6 which are rotatably installed along the circumferential direction of the gas storage tank 1 at equal intervals, the bottom ends of the hollow rods 6 are located in the gas storage tank 1, rod covers 7 are fixed at the top ends of the hollow rods 6, more than two air holes 8 are formed in the side walls of the rod covers 7 along the circumferential direction of the hollow rods 6, an air pipe is arranged in the gas storage tank 1, and one end, far away from the gas pipe, away from the gas storage tank 1, is connected with an air compressor, the hollow rod 6 penetrates through the rotary table 3, a first gear 9 is fixed on the side wall of the driving motor 2, a second gear 10 is fixed on the side wall of the hollow rod 6, a third gear 11 is fixed on the inner side wall of the sealing ring 4, the first gear 9 is meshed with the second gear 10 on the adjacent hollow rod 6, the third gear 11 is meshed with the second gear 10 on the adjacent hollow rod 6, and the top end of the rotary table 3 is provided with a foam breaking mechanism and a foam catching mechanism.
During operation, install the gas storage tank 1 in the bottom of casting furnace, utilize air compressor to carry inert gas in gas storage tank 1 through the trachea, inert gas can be argon gas or nitrogen gas, and inert gas enters into the hollow rod 6 inner chamber afterwards behind the gas storage tank 1 to from the gas pocket 8 department on the rod cover 7 entering aluminium liquid under the effect of pressure. The drive motor 2 drives the rotary table 3 to rotate when in work, so that the hollow rod 6, the rod cover 7 and the box cover 5 synchronously rotate, the hollow rod 6 enables the second gear 10 to respectively rotate on the first gear 9 and the third gear 11 in the rotating process, and the hollow rod 6 is enabled to rotate. The hollow rod 6 rotates to make the rod cover 7 rotate, so that the inert gas bubbles overflowing from the rod cover 7 can contact with more aluminum liquid. The bubble breaking mechanism can break the ejected inert gas bubbles into smaller bubbles, the bubble catching mechanism can catch the bubbles and temporarily adsorb the bubbles on the surface of the bubbles, and the bubbles are released after waiting for a period of time. The invention makes the contact between the inert gas bubbles and the aluminum liquid more sufficient by releasing the inert gas bubbles at the bottom end of the casting furnace in a rotating way, thereby improving the degassing and deslagging effects of the inert gas on the aluminum liquid.
As a further scheme of the present invention, the bubble breaking mechanism includes a first rod 12, the top end of the rotary table 3 is rotatably mounted with the first rod 12, the side wall of the first rod 12 is rotatably mounted with two or more second rods 13 at equal intervals along the circumferential direction thereof, one end of the second rod 13, which is far away from the first rod 12, is fixed with a rotating wheel 14, the bottom end of the rotating wheel is attached to the surface of the rotary table 3, two sleeves 15 are fixed on the second rod 13, two or more knife sets are fixed on the surface of the sleeve 15 along the length direction thereof, and each knife set includes a blade 16 fixedly connected along the circumferential direction of the sleeve 15; in operation, the rotating wheel 14 is rotatably mounted on the wall of the casting furnace through the connecting rod, so that the rotating wheel rotates during the rotation of the rotating disc 3, and the rotating wheel drives the second rod 13, the sleeve 15 and the blade 16 to rotate. The floating bubbles are contacted during the rotation of the blade 16, and the volume of the bubbles is reduced by the cutting action of the blade 16. The diameter of the inert gas bubbles is small, the stay time of the inert gas bubbles in the aluminum liquid is long, and the liquid level of the aluminum liquid is stable as much as possible. The residence time of the bubbles is increased, and the degassing refining effect is improved.
As a further scheme of the invention, the bubble catching mechanism comprises connecting plates 17, two connecting plates 17 are fixed on the second rod 13, and a bubble catching plate 18 is fixed on one side of each connecting plate 17, which is close to the adjacent sleeve 15; in operation, the connecting plate 17 and the bubble catching plate 18 are driven to rotate while the second rod 13 rotates by the connecting plate 17. The bubble catching plate 18 passes above the rod cover 7 during rotation, so that bubbles moving upward at the rod cover 7 are caught by the bubble catching plate 18, and the bubbles are carried to the bottom of the casting furnace during rotation of the bubble catching plate 18, and move upward out of the trap of the bubble catching plate 18 after reaching the bottom of the casting furnace. The retention time of the bubbles in the aluminum liquid can be further prolonged by arranging the bubble catching plate 18, and the moving path of the bubbles in the aluminum liquid is changed, so that the bubbles can go to a place where the bubbles cannot naturally rise, and the refining effect of the aluminum liquid is improved.
As a further scheme of the present invention, the bubble catching plate 18 is an arc-shaped plate, the bubble catching plate 18 is located right above the sleeve 15, more than two baffles 19 are fixed on the inner side wall of the bubble catching plate 18, and the baffles 19 are used for blocking bubbles; during operation, the arc-shaped bubble catching plate 18 can catch more bubbles, and the bubbles are prevented from escaping as far as possible in the moving process of the bubble catching plate 18. The arrangement of the baffles 19 further constrains the gas bubbles so that the portion of the gas bubbles located between the baffles 19 is in an upright position when the baffles 19 move to the bottom end of the furnace, where the gas bubbles move upwardly directly away from the baffles 19.
As a further scheme of the invention, an L-shaped mounting plate 20 is fixed at one end of the connecting plate 17 far away from the bubble catching plate 18, and a brush handle 21 is fixed at the bottom end of the mounting plate 20; during operation, the brush handle 21 is arranged and is contacted with the side wall of the rod cover 7 when the brush handle 21 moves to the rod cover 7, the rotation of the rod cover 7 enables the air hole 8 of the rod cover 7 to be contacted with the brush handle 21 intermittently, and the blockage of the air hole 8 is avoided through the cleaning of the brush handle 21.
As a further scheme of the invention, the brush handle 21 and the adjacent bubble catching plate 18 are symmetrical along the center of the corresponding second rod 13, and the brush handle 21 is made of metal material; during operation, when the brush handle 21 moves to the top end of the adjacent bubble catching plate 18, bubbles caught in the bubble catching plate 18 move upwards, and impurities adhered to the brush handle 21 can be taken away when the bubbles move to the brush handle 21, so that the effect of cleaning the brush handle 21 is achieved, and the brush handle 21 can continuously and effectively clean the air hole 8.
Claims (6)
1. The utility model provides a ventilative degassing and deslagging equipment in aluminum alloy slab ingot casting furnace which characterized in that: including gas storage tank (1) of round platform form, the centre of a circle department of gas storage tank (1) is fixed with driving motor (2), the output shaft end of driving motor (2) is fixed with carousel (3), the top of gas storage tank (1) is fixed with sealing ring (4), sealing ring (4) and carousel (3) are clearance fit, the top of gas storage tank (1) is rotated and is installed case lid (5), outwards be equipped with two pole groups from gas storage tank (1) centre of a circle department on case lid (5), every pole group includes along gas storage tank (1) circumference direction equidistance rotate more than two hollow rod (6) of installation, the bottom of hollow rod (6) is located gas storage tank (1), the top of hollow rod (6) is fixed with pole lid (7), be equipped with gas pocket (8) more than two along the circumference direction of hollow rod (6) on the lateral wall of pole lid (7), the air storage box is characterized in that an air pipe is arranged in the air storage box (1), one end, far away from the air storage box (1), of the air pipe is connected with an air compressor, the hollow rod (6) penetrates through the rotary table (3), a first gear (9) is fixed on the side wall of the driving motor (2), a second gear (10) is fixed on the side wall of the hollow rod (6), a third gear (11) is fixed on the inner side wall of the sealing ring (4), the first gear (9) is meshed with the second gear (10) on the adjacent hollow rod (6), the third gear (11) is meshed with the second gear (10) on the adjacent hollow rod (6), and the top end of the rotary table (3) is provided with a foam breaking mechanism and a foam catching mechanism.
2. The aluminum alloy slab ingot casting furnace interior ventilation, gas removal and slag removal equipment of claim 1, which is characterized in that: broken bubble mechanism includes pole (12) No. one, carousel (3) top is rotated and is installed pole (12) No. one, the lateral wall of pole (12) is followed its circumference equidistance and is rotated No. two more than installing pole (13), the one end that pole (12) was kept away from in No. two pole (13) is fixed with runner (14), the bottom and the laminating of carousel (3) surface of gyro wheel, be fixed with two sleeve (15) on No. two pole (13), sleeve (15) surface is fixed with the knife tackle more than two along its length direction, and every knife tackle includes along sleeve (15) circumference direction fixed connection's blade (16).
3. The aluminum alloy slab ingot casting furnace internal gas-permeable degassing and deslagging equipment of claim 2, characterized by that: the bubble catching mechanism comprises a connecting plate (17), two connecting plates (17) are fixed on the second rod (13), and a bubble catching plate (18) is fixed on one side, close to the adjacent sleeve (15), of each connecting plate (17).
4. The aluminum alloy slab ingot casting furnace of claim 3, wherein the air-permeable degassing and deslagging device comprises: the bubble catching plate (18) is an arc-shaped plate, the bubble catching plate (18) is located right above the sleeve (15), more than two baffle plates (19) are fixed on the inner side wall of the bubble catching plate (18), and the baffle plates (19) are used for blocking bubbles.
5. The aluminum alloy slab ingot casting furnace interior ventilation, gas removal and slag removal equipment of claim 3, which is characterized in that: an L-shaped mounting plate (20) is fixed at one end of the connecting plate (17) far away from the bubble catching plate (18), and a brush handle (21) is fixed at the bottom end of the mounting plate (20).
6. The aluminum alloy slab ingot casting furnace of claim 5, wherein the air-permeable degassing and deslagging device comprises: the brush handle (21) and the adjacent bubble catching plate (18) are symmetrical along the center of the corresponding second rod (13), and the brush handle (21) is made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851548.1A CN115090859A (en) | 2022-07-19 | 2022-07-19 | Air-permeable degassing and deslagging equipment in aluminum alloy flat ingot casting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851548.1A CN115090859A (en) | 2022-07-19 | 2022-07-19 | Air-permeable degassing and deslagging equipment in aluminum alloy flat ingot casting furnace |
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| CN115090859A true CN115090859A (en) | 2022-09-23 |
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| CN202210851548.1A Pending CN115090859A (en) | 2022-07-19 | 2022-07-19 | Air-permeable degassing and deslagging equipment in aluminum alloy flat ingot casting furnace |
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| CN206550334U (en) * | 2017-01-19 | 2017-10-13 | 珠海肯赛科有色金属有限公司 | A kind of aluminum alloy low-pressure casting keeps furnace system |
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| CN211248241U (en) * | 2019-10-11 | 2020-08-14 | 马永超 | Degassing unit of aluminum alloy casting usefulness |
| CN114350988A (en) * | 2021-11-25 | 2022-04-15 | 常州市海立方机械有限公司 | Full-automatic degassing process for smelting and refining |
| CN114369734A (en) * | 2021-11-25 | 2022-04-19 | 常州市海立方机械有限公司 | Aluminum alloy smelting refining degassing method |
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2022
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| CN101037733A (en) * | 2007-04-25 | 2007-09-19 | 中国铝业股份有限公司 | Ventilating air-eliminating refining method of 3104 aluminum alloy flat ingot in casting furnace |
| CN202968663U (en) * | 2012-12-10 | 2013-06-05 | 湖北金洋冶金股份有限公司 | Multipoint blowing hydrogen removal purification treatment device in aluminium alloy furnace |
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