Production device of hypereutectic silicon-aluminum alloy and modification process thereof

Abstract

The application discloses a hypereutectic silicon aluminum alloy production device, which comprises a base, a plurality of support frames are symmetrically arranged on the upper end face of the base, the plurality of support frames are arranged away from each other, and a working kettle is fixedly connected to the ends of the plurality of support frames away from the base.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy bar manufacturing technology, and in particular to a hypereutectic silicon-aluminum alloy production apparatus and its modification process. Background Technology

[0002] Various industries are moving towards lightweighting, and piston materials have evolved from traditional cast iron pistons to hypoeutectic silicon-aluminum alloy pistons and eutectic silicon-aluminum alloy pistons, achieving lightweighting effects. Although hypereutectic silicon-aluminum alloys have better high-temperature resistance and friction coefficient than eutectic silicon-aluminum alloys, the problem of coarse silicon grains larger than 100μm cannot be solved in the production process, which has prevented their widespread adoption.

[0003] In the production of eutectic silicon-aluminum alloys, a working kettle is required for extensive melting and mixing. This process necessitates significant slag removal. Existing slag removal devices are insufficient to remove slag from different locations within the working kettle. Furthermore, during melt transfer, corresponding pipelines with corresponding switching mechanisms are required. However, existing pipelines and switching mechanisms create a gap between the pipelines and switching mechanisms within the working kettle, preventing materials in this area from effectively participating in processing and significantly hindering production.

[0004] To address these issues, we propose a hypereutectic silicon-aluminum alloy production apparatus and its modification process. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a hypereutectic silicon-aluminum alloy production device and its modification process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hypereutectic silicon-aluminum alloy production apparatus includes a base. Multiple symmetrically arranged support frames are fixedly connected to the upper surface of the base, with the support frames spaced apart from each other. A working vessel is fixedly connected to the ends of the support frames furthest from the base. A working chamber is provided on the inner wall of the working vessel, and a heat-conducting plate is fixedly connected to the inner wall of the working chamber. A heat-conducting liquid is provided inside the working chamber. A heater is fixedly connected to the outer wall of the working vessel, with its output end penetrating the working vessel. Lifting grooves are provided on both inner walls of the heat-conducting plate. Each of the two lifting blocks is slidably connected to a lifting block, and a fixed shaft is fixedly connected between them. A rotating tube is rotatably connected to the fixed shaft, and a slag-scraping screen is fixedly connected to the rotating tube. A torsion spring is sleeved on the fixed shaft, with one end of the torsion spring fixedly connected to the inner wall of the rotating tube and the other end of the torsion spring fixedly connected to the fixed shaft. A telescopic motor is fixedly connected to the side wall of the working vessel away from the base. The output shaft of the telescopic motor passes through the working vessel and is fixedly connected to one of the lifting blocks. The slag-scraping screen has two symmetrically arranged control structures.

[0008] Preferably, the control structure includes a pull rope fixedly connected to the side wall of the slag removal net near the base, a rotating motor fixedly connected to the side wall of the support frame away from the base, a pulley fixedly connected to the rotating shaft of the rotating motor, the end of the pull rope away from the slag removal net being wound around the pulley, the end of the pull rope away from the slag removal net being fixedly connected to the pulley, and a feeding structure provided on the working vessel.

[0009] Preferably, the feeding structure includes a feeding port disposed on the side wall of the working vessel near the base, a feeding pipe fixedly connected to the outer wall of the working vessel near the base, a blocking block slidably connected inside the feeding port, the end of the blocking block away from the base being matched with the inner wall of the working vessel, a lifting seat fixedly connected to the side wall of the blocking block near the base, a slot provided on the side wall of the lifting seat near the base, an inclined block provided in the slot, a propulsion motor fixedly connected to the outer wall of the feeding pipe, the propulsion end of the propulsion motor being fixedly connected to the inclined block through the feeding pipe, a limit sleeve slidably connected to the lifting seat, a connecting rod fixedly connected to the outer wall of the limit sleeve, and the connecting rod being fixedly connected to the inner wall of the feeding pipe.

[0010] Preferably, a card block is slidably connected within the card slot, and the card block is fixedly connected to the inclined block.

[0011] Preferably, the end of the working vessel near the base is semi-circular, and the shape of the slag-removing screen matches the end of the working vessel near the base.

[0012] A hypereutectic silicon-aluminum alloy modification process includes the following steps:

[0013] 1) Melting aluminum alloy according to the mass fraction ratio: First, turn on the heater so that it heats the heat transfer fluid through the output end, thereby heating the heat transfer plate. Then, put the aluminum ingot into the working kettle for heating. After the aluminum ingot melts, add industrial silicon blocks and aluminum-copper master alloy in sequence for smelting. The smelting temperature is set at 790℃-810℃ by the heater. After the materials are completely melted, sprinkle slag removal agent into the working kettle for slag removal and stir at least twice. During slag removal, you can first control the two rotating motors to drive the corresponding pulleys to rotate to the appropriate position, so that the two pulleys can retract. The pull ropes are either rolled up or released, allowing the slag-scraping net to descend vertically via the connection of the two pull ropes and the torsion spring. After the net is lowered to the bottom of the working vessel by the lifting block using the output shaft of the telescopic motor, the two rotating motors are controlled to reset, allowing the net to return to its original position under the force of the torsion spring. The net then scrapes against the bottom of the working vessel to complete the slag removal work. The upward steps are then repeated in the opposite direction, allowing the net to complete the slag removal work in another direction. When the temperature drops to 745-745℃, magnesium ingots are pressed into the melt. After the magnesium ingots melt, the net is stirred and scraped.

[0014] 2) Furnace guiding and refining: The melt obtained in step 1) is introduced into the holding furnace through the feeding pipe. During the feeding process, the propulsion motor is controlled to push the inclined block to slide through the propulsion end. Then, the inclined block can push the lifting seat and the blocking block to rise through the slot, so that the blocking block is disengaged from the feeding port. Then, the melt can smoothly enter the holding furnace through the feeding port and the feeding pipe. Argon gas is used to introduce the refining agent into the melt for refining. After that, slag is removed to complete the melt purification treatment.

[0015] 3) Modification treatment: Adjust the temperature of the melt obtained in step 2) to 770-780℃, then press the aluminum phosphorus modifier into the melt at 20kg / t, and stir it 3 times, with an interval of 5-6 minutes between each stirring and a stirring time of 7-8 minutes.

[0016] 4) Heating and settling: Adjust the temperature of the melt obtained in step 3) to 750℃-770℃, then let it stand for 30 minutes. Then, introduce the melt into the filter box and degassing box through the flow channel to further purify the melt. At the same time, at the front end of the filter box, aluminum titanium boron wire is uniformly melted into the aluminum melt through the wire feeder.

[0017] 5) Casting: Cast the melt obtained in step 4) at a speed of 60-120 mm / min and control the cooling water flow rate at 40-90 L / min.

[0018] 6) Homogenization of ingots: The ingots obtained in step 5) are homogenized at a temperature of 470-480℃ for 8-10 hours, and then cooled by water with a cooling intensity of ≥200℃ / h.

[0019] 7) Profiles and bars: The ingots obtained in step 6) are heated to 350-400℃, the extrusion cylinder temperature is controlled at 350-380℃, and bar molds are used to produce profiles at a speed of 2-4m / min. Online quenching and extrusion are carried out with an online cooling intensity ≥2℃ / s.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, the user can use a telescopic motor and other structures to allow the slag-removing screen to rise and fall freely. Two rotating motors and two pull ropes allow the slag-removing screen to rotate inside the working vessel. This, combined with the special shape of the slag-removing screen and the working vessel near the base, allows the slag-removing screen to effectively filter out the slag inside the working vessel, greatly ensuring processing quality. Simultaneously, the matching setting of the blocking block and the working vessel, along with the lifting and lowering of the blocking block using a propulsion motor and other structures, ensures smooth material transfer while preventing materials from not participating in the processing, further guaranteeing product quality.

[0022] 2. The average size of the coarse-grained silicon in the hypereutectic aluminum alloy of this invention is ≤50μm, and the maximum size is ≤80μm. It can produce ingots with diameters of 90-330mm. This invention uses an aluminum-phosphorus modifier, which can significantly limit the growth of coarse-grained silicon. Through multiple stirrings, the melt is modified more fully. The hypereutectic silicon rod of this invention has a hardness of 80-90HBW in the H112 state, which is more than 25% higher than that of eutectic silicon in the same state. This allows for the manufacture of better aluminum alloy pistons. Attached Figure Description

[0023] Figure 1 This is a front structural cross-sectional view of a hypereutectic silicon-aluminum alloy production apparatus proposed in this invention;

[0024] Figure 2 for Figure 1 Enlarged view of the A-structure in the middle;

[0025] Figure 3 This is a partial side cross-sectional view of a hypereutectic silicon-aluminum alloy production apparatus proposed in this invention.

[0026] In the diagram: 1. Base, 2. Support frame, 3. Working vessel, 4. Working chamber, 5. Heat-conducting plate, 6. Heater, 7. Lifting groove, 8. Lifting block, 9. Fixed shaft, 10. Rotating tube, 11. Slag removal net, 12. Torsion spring, 13. Telescopic motor, 14. Pull rope, 15. Rotating motor, 16. Pulley, 17. Discharge port, 18. Discharge pipe, 19. Blocking block, 20. Lifting seat, 21. Slot, 22. Inclined block, 23. Propulsion motor, 24. Limiting sleeve, 25. Connecting rod, 26. Locking block, 27. Heat-conducting liquid. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figure 1-3 A hypereutectic silicon-aluminum alloy production apparatus includes a base 1. Multiple symmetrically arranged support frames 2 are fixedly connected to the upper surface of the base 1, with the support frames 2 positioned far apart from each other. A working vessel 3 is fixedly connected to the end of each support frame 2 furthest from the base 1. A working chamber 4 is provided on the inner wall of the working vessel 3. A heat-conducting plate 5 is fixedly connected to the inner wall of the working chamber 4, and a heat-conducting liquid 27 is provided inside the working chamber 4. A heater 6 is fixedly connected to the outer wall of the working vessel 3, with the output end of the heater 6 penetrating through the working vessel 3. The two inner ends of the heat-conducting plate 5... Each wall is provided with a lifting groove 7, and a lifting block 8 is slidably connected in each of the two lifting grooves 7. A fixed shaft 9 is fixedly connected between the two lifting blocks 8. A rotating tube 10 is rotatably connected to the fixed shaft 9. A slag-removing screen 11 is fixedly connected to the rotating tube 10. The end of the working vessel 3 near the base 1 is semi-circular. The shape of the slag-removing screen 11 matches the end of the working vessel 3 near the base 1. This arrangement allows the slag-removing screen 11 to better fit the inner wall of the working vessel 3 during rotation, thereby completing a more comprehensive filtration and slag removal operation inside the working vessel 3.

[0029] A torsion spring 12 is fitted on the fixed shaft 9. One end of the torsion spring 12 is fixedly connected to the inner wall of the rotating tube 10, and the other end is fixedly connected to the fixed shaft 9. The torsion spring 12 allows the rotating tube 10 and the slag scraper 11 to smoothly complete the reset work, thereby allowing the slag to rise. A telescopic motor 13 is fixedly connected to the side wall of the working vessel 3 away from the base 1. The output shaft of the telescopic motor 13 passes through the working vessel 3 and is fixedly connected to one of the lifting blocks 8. The slag scraper 11 is provided with two symmetrically arranged control structures. The control structures include a pull rope 14 fixedly connected to the side wall of the slag scraper 11 near the base 1. A rotating motor 15 is fixedly connected to the side wall of the support frame 2 away from the base 1. A pulley 16 is fixedly connected to the rotating shaft of the rotating motor 15. The pull rope 14 is located away from the slag scraper 11. One end of the slag mesh 11 is wound around the pulley 16, and the end of the pull rope 14 away from the slag mesh 11 is fixedly connected to the pulley 16. The working vessel 3 is provided with a feeding structure, which includes a feeding port 17 on the side wall of the working vessel 3 near the base 1. A feeding pipe 18 is fixedly connected to the outer wall of the working vessel 3 near the base 1. A blocking block 19 is slidably connected in the feeding port 17. The end of the blocking block 19 away from the base 1 is matched with the inner wall of the working vessel 3. A lifting seat 20 is fixedly connected to the side wall of the blocking block 19 near the base 1. A slot 21 is provided on the side wall of the lifting seat 20 near the base 1. An inclined block 22 is provided in the slot 21. A blocking block 26 is slidably connected in the slot 21. The blocking block 26 is fixedly connected to the inclined block 22. The setting of the blocking block 26 makes the sliding of the inclined block 22 in the slot 21 more stable.

[0030] A propulsion motor 23 is fixedly connected to the outer wall of the feeding pipe 18. The propulsion end of the propulsion motor 23 passes through the feeding pipe 18 and is fixedly connected to the inclined block 22. A limit sleeve 24 is slidably connected to the lifting seat 20. A connecting rod 25 is fixedly connected to the outer wall of the limit sleeve 24 and is fixedly connected to the inner wall of the feeding pipe 18. This arrangement allows the blockage block 19 and the lifting seat 20 to rise and fall stably, thereby completing the material discharge and blockage work.

[0031] A hypereutectic silicon-aluminum alloy modification process includes the following steps:

[0032] 1) Melting aluminum alloy according to the mass fraction ratio: First, turn on heater 6 so that heater 6 heats the heat transfer fluid 27 through the output end, and then completes the heating of heat transfer plate 5. Then, put aluminum ingot into working kettle 3 for heating. After the aluminum ingot melts, add industrial silicon block and aluminum-copper master alloy in sequence for melting. The melting temperature is set at 790℃-810℃ by heater 6. After the materials are completely melted, sprinkle slag removal agent into working kettle 3 for slag removal and stir more than twice. When removing slag, you can first control the two rotating motors 15 to control the rotating shaft to drive the corresponding pulleys 16 to rotate to the appropriate position, so that the two pulleys 16 can be wound or released by the pull rope 14. In this way, the two pull ropes 14 can be used to connect with the pulleys 16 to the pulleys 16. The connection of the slag removal mesh 11 and the setting of the torsion spring 12 allow the slag removal mesh 11 to descend vertically. After the output shaft of the telescopic motor 13 drives the lifting block 8 to lower the slag removal mesh 11 to the bottom of the working vessel 3, the two rotating motors 15 are controlled to reset and rotate, so that the slag removal mesh 11 can be reset under the elastic force of the torsion spring 12. Then, it will stick to the bottom of the working vessel 3 and shovel to complete the slag removal work. Then, the upward steps are repeated in the opposite direction so that the slag removal mesh 11 can complete the shoveling and slag removal work in another direction. In this way, the slag in the working vessel 3 can be filtered in a comprehensive manner, which greatly ensures the processing quality of the product. When the temperature drops to 745-745℃, magnesium ingots are pressed into the melt. After the magnesium ingots melt, the slag is stirred and removed.

[0033] 2) Furnace guiding and refining: The melt obtained in step 1 is introduced into the settling furnace through the feeding pipe 18. During the feeding process, the propulsion motor 23 is controlled to push the inclined block 22 to slide through the propulsion end. Then, the inclined block 22 can push the lifting seat 20 and the blocking block 19 to rise through the slot 21, so that the blocking block 19 is disengaged from the feeding port 17. Then, the melt can smoothly enter the settling furnace through the feeding port 17 and the feeding pipe 18. In this way, the material transfer can be completed smoothly. With the help of the blocking block 19 adhering to the inner wall of the working vessel 3, the material is completely located in the working vessel 3 during processing. Then, the processing can be completed in the working vessel 3 without any leakage, which further ensures the quality of processing. Argon gas is used to introduce the refining agent into the melt for refining. After that, slag is removed to complete the melt purification treatment.

[0034] 3) Modification treatment: Adjust the temperature of the melt obtained in step 2) to 770-780℃, then press the aluminum phosphorus modifier into the melt at 20kg / t, and stir it 3 times, with an interval of 5-6 minutes between each stirring and a stirring time of 7-8 minutes.

[0035] 4) Heating and settling: Adjust the temperature of the melt obtained in step 3) to 750℃-770℃, then let it stand for 30 minutes. Then, introduce the melt into the filter box and degassing box through the flow channel to further purify the melt. At the same time, at the front end of the filter box, aluminum titanium boron wire is uniformly melted into the aluminum melt through the wire feeder.

[0036] 5) Casting: Cast the melt obtained in step 4) at a speed of 60-120 mm / min and control the cooling water flow rate at 40-90 L / min.

[0037] 6) Homogenization of ingots: The ingots obtained in step 5) are homogenized at a temperature of 470-480℃ for 8-10 hours, and then cooled by water with a cooling intensity of ≥200℃ / h.

[0038] 7) Profiles and bars: The ingots obtained in step 6) are heated to 350-400℃, the extrusion cylinder temperature is controlled at 350-380℃, and bar molds are used to produce profiles at a speed of 2-4m / min. Online quenching and extrusion are carried out with an online cooling intensity ≥2℃ / s.

[0039] The chemical composition and mass percentage of the hypereutectic silicon aluminum alloy rods produced by the above process are as follows: Si: 15.0~18.0%, Cu: 4.0-5.0%, Mg: 0.4%~0.7%, P: 0.08-0.12%, Fe≤0.25%, Ti≤0.1%, Mn0.9~1.2%, RE≤0.05%, and other elements individually ≤0.05% and in total ≤0.15%. Simultaneously, the average size of the coarse-grained silicon in the hypereutectic aluminum alloy is ≤50μm, and the maximum size is ≤80μm. Ingot diameters of 90-330mm can be produced. The hardness of the hypereutectic silicon rods in the H112 state is 80-90HBW, which is more than 25% higher than that of eutectic silicon in the same state, greatly ensuring the quality of the aluminum alloy pistons. Furthermore, the use of an aluminum-phosphorus modifier can significantly limit the growth of coarse-grained silicon. Multiple stirrings ensure more complete melt modification, further improving the product quality.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hypereutectic silicon-aluminum alloy production apparatus, comprising a base (1), characterized in that, Multiple support frames (2) arranged symmetrically are fixedly connected to the upper surface of the base (1). The multiple support frames (2) are arranged far apart from each other. The ends of the multiple support frames (2) far away from the base (1) are fixedly connected to a working vessel (3). A working chamber (4) is provided on the inner wall of the working vessel (3). A heat-conducting plate (5) is fixedly connected to the inner wall of the working chamber (4). A heat-conducting liquid (27) is provided in the working chamber (4). A heater (6) is fixedly connected to the outer wall of the working vessel (3). The output end of the heater (6) is set through the working vessel (3). A lifting groove (7) is provided on both inner walls of the heat-conducting plate (5). A lifting block (8) is slidably connected in both lifting grooves (7). A fixed shaft (9) is fixedly connected between the lifting blocks (8). A rotating tube (10) is rotatably connected to the fixed shaft (9). A slag-removing net (11) is fixedly connected to the rotating tube (10). A torsion spring (12) is sleeved on the fixed shaft (9). One end of the torsion spring (12) is fixedly connected to the inner wall of the rotating tube (10), and the other end of the torsion spring (12) is fixedly connected to the fixed shaft (9). A telescopic motor (13) is fixedly connected to the side wall of the working vessel (3) away from the base (1). The output shaft of the telescopic motor (13) passes through the working vessel (3) and is fixedly connected to one of the lifting blocks (8). Two symmetrically arranged control structures are provided on the slag-removing net (11). The control structure includes a pull rope (14) fixedly connected to the side wall of the slag removal net (11) near the base (1), a rotating motor (15) fixedly connected to the side wall of the support frame (2) away from the base (1), a pulley (16) fixedly connected to the rotating shaft of the rotating motor (15), one end of the pull rope (14) away from the slag removal net (11) is wound around the pulley (16), and the other end of the pull rope (14) away from the slag removal net (11) is fixedly connected to the pulley (16). The working vessel (3) is provided with a feeding structure.

2. The apparatus for producing hypereutectic silicon-aluminum alloy according to claim 1, characterized in that, The feeding structure includes a feeding port (17) located on the side wall of the working vessel (3) near the base (1). A feeding pipe (18) is fixedly connected to the outer wall of the working vessel (3) near the base (1). A blocking block (19) is slidably connected inside the feeding port (17). The end of the blocking block (19) away from the base (1) is matched with the inner wall of the working vessel (3). A lifting seat (20) is fixedly connected to the side wall of the blocking block (19) near the base (1). The lifting seat (20) is located near the base (1). 1) A slot (21) is provided on one side wall, and a slope block (22) is provided in the slot (21). A propulsion motor (23) is fixedly connected to the outer wall of the feed pipe (18). The propulsion end of the propulsion motor (23) passes through the feed pipe (18) and is fixedly connected to the slope block (22). A limit sleeve (24) is slidably connected to the lifting seat (20). A connecting rod (25) is fixedly connected to the outer wall of the limit sleeve (24). The connecting rod (25) is fixedly connected to the inner wall of the feed pipe (18).

3. The apparatus for producing hypereutectic silicon-aluminum alloy according to claim 2, characterized in that, A card block (26) is slidably connected in the card slot (21), and the card block (26) is fixedly connected to the inclined block (22).

4. The apparatus for producing hypereutectic silicon-aluminum alloy according to claim 1, characterized in that, The working vessel (3) is semi-circular at one end near the base (1), and the shape of the slag-removing mesh (11) matches that of the working vessel (3) near the base (1).

5. The hypereutectic silicon-aluminum alloy modification process using the hypereutectic silicon-aluminum alloy production apparatus described in claim 2, characterized in that, Includes the following steps: 1) According to the mass fraction ratio, smelt aluminum alloy: First, turn on the heater (6) so that the heater (6) heats the heat transfer liquid (27) through the output end, and then completes the heating work of the heat transfer plate (5). Then, put the aluminum ingot into the working kettle (3) for heating. After the aluminum ingot is melted, add industrial silicon blocks and aluminum-copper intermediate alloy in sequence for smelting. The smelting temperature is set at 790℃-810℃ by the heater (6). After the ingredients are completely melted, sprinkle slag removal agent into the working kettle (3) for slag removal and stir more than twice. When removing slag, you can first control the two rotating motors (15) to control the rotating shaft to drive the corresponding pulleys (16) to rotate to the appropriate position, so that the two pulleys (16) can be wound up or released. In this way, the slag removal net (11) can be connected to the two pull ropes (14) and the torsion spring (12) can be set so that the slag removal net (11) can be lowered in a vertical state. After the output shaft of the telescopic motor (13) is used to make the lifting block (8) drive the slag removal net (11) to the bottom of the working vessel (3), the two rotating motors (15) are controlled to reset and rotate so that the slag removal net (11) can be reset under the elastic force of the torsion spring (12). Then, it is attached to the bottom of the working vessel (3) to complete the slag removal work. Then, the upward step is repeated in the opposite direction so that the slag removal net (11) can complete the slag removal work in another direction. When the temperature drops to 745-745℃, magnesium ingots are pressed into the melt. After the magnesium ingots melt, the slag removal is stirred. 2) Furnace guiding and refining: The melt obtained in step 1) is introduced into the settling furnace through the feeding pipe (18). During the feeding process, the propulsion motor (23) is controlled to push the inclined block (22) to slide through the propulsion end, so that the inclined block (22) can push the lifting seat (20) and the blocking block (19) to rise through the slot (21), so that the blocking block (19) is removed from the feeding port (17), and then the melt can smoothly enter the settling furnace through the feeding port (17) and the feeding pipe (18). Argon gas is used to introduce the refining agent into the melt for refining. After that, slag is removed to complete the melt purification treatment. 3) Modification treatment: Adjust the temperature of the melt obtained in step 2) to 770-780℃, then press the aluminum phosphorus modifier into the melt at 20kg / t, and stir it 3 times, with an interval of 5-6 minutes between each stirring and a stirring time of 7-8 minutes. 4) Heating and settling: Adjust the temperature of the melt obtained in step 3) to 750℃-770℃, then let it stand for 30 minutes. Then, introduce the melt into the filter box and degassing box through the flow channel to further purify the melt. At the same time, at the front end of the filter box, aluminum titanium boron wire is uniformly melted into the aluminum melt through the wire feeder. 5) Casting: Cast the melt obtained in step 4) at a speed of 60-120 mm / min and control the cooling water flow rate at 40-90 L / min. 6) Homogenization of ingots: The ingots obtained in step 5) are homogenized at a temperature of 470-480℃ for 8-10 hours, and then cooled by water with a cooling intensity of ≥200℃ / h. 7) Profiles and bars: The ingots obtained in step 6) are heated to 350-400℃, the extrusion cylinder temperature is controlled at 350-380℃, and bar molds are used to produce profiles at a speed of 2-4m / min. Online quenching and extrusion are carried out with an online cooling intensity ≥2℃ / s.

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