CN217889460U - Horizontal continuous casting device based on high-silicon aluminum alloy - Google Patents
Horizontal continuous casting device based on high-silicon aluminum alloy Download PDFInfo
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- CN217889460U CN217889460U CN202220904942.2U CN202220904942U CN217889460U CN 217889460 U CN217889460 U CN 217889460U CN 202220904942 U CN202220904942 U CN 202220904942U CN 217889460 U CN217889460 U CN 217889460U
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Abstract
The utility model belongs to the technical field of the aluminum alloy casting is used, specifically disclose horizontal continuous casting device based on high-silicon aluminum alloy, empty aluminum alloy melting furnace, change liquid chute, keep warm and water and build stove, servo control valve, pour chute, horizontal heat preservation stove outer covering, crystallizer, casting machine and cutter etc. including hydraulic pressure, casting machine is used for drawing the shaping stick, the cutter is used for cutting off the shaping stick. The utility model discloses a horizontal continuous casting device based on high-silicon aluminum alloy's beneficial effect lies in: 1. the whole structure is reasonable in design, and the assembly line type horizontal continuous casting of A390 aluminum alloy (high-silicon hypereutectic aluminum alloy) is realized; 2. the cast molding rod has high quality, the primary crystal silicon particles have the smallest size (approximately equal to 27 mu m), the primary crystal silicon particles are distributed most uniformly, the surface quality of the pulling rod is good, and deep processing can be carried out only by peeling a small amount.
Description
Technical Field
The utility model belongs to the technical field of the aluminum alloy casting is used, concretely relates to horizontal continuous casting device based on high-silicon aluminum alloy.
Background
The A390 aluminum alloy is high-silicon hypereutectic aluminum alloy, has good wear resistance, corrosion resistance, low linear expansion coefficient, good thermal conductivity, especially good high-temperature mechanical property and high-temperature dimensional stability, and has higher si content and lower density than eutectic and hypoeutectic aluminum alloys, so that the A390 aluminum alloy is more applied to manufacturing engine pistons, and the inertia force of the reciprocating motion of the pistons can be reduced due to low density.
Horizontal continuous casting has the following advantages: 1. because the metal is cooled rapidly, the crystallization is compact, the structure is uniform, and the mechanical property is better; 2. during continuous casting, a casting is not provided with a riser of a pouring system, so that a continuous ingot is not required to be cut and trimmed during rolling, metal is saved, and the yield is improved; 3. the working procedures are simplified, and modeling and other working procedures are avoided, so that the labor intensity is reduced; the required production area is greatly reduced; 4. the continuous casting production is easy to realize mechanization and automation, and the continuous casting and rolling can be realized during ingot casting, thereby greatly improving the production efficiency.
At present, the conventional horizontal continuous casting device is only suitable for casting of common metal materials, but not suitable for the production line type efficient continuous casting of the a390 aluminum alloy, and how to design the horizontal continuous casting device for the a390 aluminum alloy is a current urgent need to be researched and developed.
Therefore, based on the above problems, the present invention provides a horizontal continuous casting apparatus based on high silicon aluminum alloy
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a horizontal continuous casting device based on high-silicon aluminum alloy solves the technical problem who exists among the background art.
The technical scheme is as follows: the utility model provides a horizontal continuous casting device based on high-silicon aluminum alloy, which comprises a hydraulic aluminum alloy pouring melting furnace, a liquid transferring chute, a heat preservation pouring furnace, a servo control valve, a pouring chute, a horizontal heat preservation furnace shell, a crystallizer, a casting machine and a cutting machine; the hydraulic aluminum alloy pouring melting furnace, the liquid transferring chute, the heat preservation pouring furnace, the pouring chute and the horizontal heat preservation furnace shell are sequentially connected, aluminum alloy melt flows in the hydraulic aluminum alloy pouring melting furnace, the liquid transferring chute, the heat preservation pouring furnace, the pouring chute and the horizontal heat preservation furnace shell sequentially, a servo control valve is installed on the heat preservation pouring furnace and used for controlling flowing/blocking of the aluminum alloy melt, the crystallizer is installed on one end face of the horizontal heat preservation furnace shell, the aluminum alloy melt flows out of the crystallizer and enters the crystallizer for molding, the casting machine is used for leading out molding rods, and the cutting machine is used for cutting off the molding rods.
According to the technical scheme, the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a temperature detector arranged on the outer wall of the pouring chute and used for monitoring and displaying the temperature of the aluminum alloy melt in the pouring chute.
This technical scheme, the crystallizer sets up to circular cavity structures, and the crystallizer is inside to set up to the boss type, and the boss profile evenly is provided with the cooling hole for water spraying, and the crystallizer outer wall is provided with the cooling water inlet tube, is provided with continuous casting shaping graphite pipe in the crystallizer one end, and continuous casting shaping graphite pipe passes through compact heap and crystallizer fixed connection, and wherein, continuous casting shaping graphite pipe outer wall is provided with sealed the pad, and sealed the pad is located between compact heap, the crystallizer.
In this embodiment, the sealing gasket includes, but is not limited to, calcium silicate.
This technical scheme, horizontal continuous casting device based on high-silicon aluminum alloy still including setting up being provided with thermal-insulated heat preservation at horizontal heat preservation stove outer covering inner wall, horizontal heat preservation stove outer covering outer wall is provided with the box, is provided with a plurality of invasion heater in the box, wherein, the one end of invasion heater is located horizontal heat preservation stove outer covering for heat preservation heating to the aluminium alloy melt in the horizontal heat preservation stove outer covering.
According to the technical scheme, the horizontal heat-insulating furnace shell is integrally formed by combined-ore fireproof anti-sticking aluminum castable, the invasion heater is an internal heating type radiant tube, the shell is silicon carbide, the heating body is a nitrogen carbon rod, and each heating body is 8.5KW; the heat insulation layer is a light heat insulation brick, and the outer layer of the light heat insulation brick is provided with a high-density ceramic fiber board or a nanometer heat insulation board.
According to the technical scheme, the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a refining degasser matched with the heat-preservation pouring furnace for use, wherein the horizontal heat-preservation furnace shell and the aluminum alloy melt are provided with liquid discharge valves through crystallizer connecting parts.
According to the technical scheme, the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a first circulating water cooling structure and a second circulating water cooling structure which are arranged on the outer walls of the two ends of the pouring chute, wherein the first circulating water cooling structure and the second circulating water cooling structure are located on the two sides of the temperature measurer.
According to the technical scheme, the hydraulic aluminum alloy pouring melting furnace is BH-500 in model, the heat-preservation pouring furnace is BK-800 in model, and the rod pulling speed of the casting machine is 75-100mm/min.
According to the technical scheme, the stroke of the refining degasser is 1500mm, and the length of the spiral arm is 1200mm.
Compared with the prior art, the utility model discloses a horizontal continuous casting device based on high-silicon aluminum alloy's beneficial effect lies in: 1. the whole structure is reasonable in design, and the assembly line type horizontal continuous casting of A390 aluminum alloy (high-silicon hypereutectic aluminum alloy) is realized; 2. the cast molding rod has high quality, the primary crystal silicon particles have the smallest size (approximately equal to 27 mu m), the primary crystal silicon particles are distributed most uniformly, the surface quality of the pulling rod is good, and deep processing can be carried out only by peeling a small amount.
Drawings
Fig. 1 and 2 are schematic top structural views of a horizontal continuous casting device based on a high-silicon aluminum alloy according to the present invention;
FIGS. 3-6 are graphs showing the results of an analysis with a rod pull rate of 75 mm/min;
FIGS. 7-10 are graphs showing the results of an analysis of a rod pull rate of 100 mm/min;
FIGS. 11-14 are graphs showing the results of analysis with a rod pull rate of 130 mm/min;
wherein, the drawing serial numbers are as follows: 100-hydraulic pouring aluminum alloy melting furnace, 200-liquid transferring chute, 300-heat preservation pouring furnace, 400-refining degasser, 500-servo control valve, 600-pouring chute, 601-temperature detector, 602-first circulating water cooling structure, 603-second circulating water cooling structure, 700-horizontal heat preservation furnace shell, 701-heat insulation layer, 702-box body, 703-intrusion heater, 800-crystallizer, 801-cooling water spray hole, 802-cooling water inlet pipe, 803-continuous casting graphite pipe, 804-sealing gasket, 805-pressing block, 900-casting machine and 1000-cutting machine.
Detailed Description
The invention will be further elucidated with reference to the drawings and the embodiments.
Example one
The horizontal continuous casting device based on the high-silicon aluminum alloy as shown in the figures 1 and 2 comprises a hydraulic pouring aluminum alloy melting furnace 100, a liquid transferring chute 200, a heat-preservation pouring furnace 300, a servo control valve 500, a pouring chute 600, a horizontal heat-preservation furnace shell 700, a crystallizer 800, a casting machine 900 and a cut-off machine 1000;
the hydraulic aluminum alloy pouring melting furnace 100, the liquid transferring chute 200, the heat preservation pouring furnace 300, the pouring chute 600 and the horizontal heat preservation furnace shell 700 are sequentially connected, aluminum alloy melt flows in the hydraulic aluminum alloy pouring melting furnace 100, the liquid transferring chute 200, the heat preservation pouring furnace 300, the pouring chute 600 and the horizontal heat preservation furnace shell 700 sequentially, the servo control valve 500 is installed on the heat preservation pouring furnace 300 and used for controlling flowing/blocking of the aluminum alloy melt, the crystallizer 800 is installed on one end face of the horizontal heat preservation furnace shell 700, the aluminum alloy melt flows out of the crystallizer 800 and enters the crystallizer 800 for forming, the casting machine 900 is used for leading out a forming rod, and the cutting machine 1000 is used for cutting off the forming rod.
The horizontal continuous casting device based on the high-silicon aluminum alloy with the structure is preferable, and further comprises a temperature detector 601 arranged on the outer wall of the pouring chute 600 and used for monitoring and displaying the temperature of the aluminum alloy melt in the pouring chute 600.
Example two
On the basis of the first embodiment, preferably, the crystallizer 800 is set to be a circular hollow cavity structure, the interior of the crystallizer 800 is set to be a boss type, cooling water spray holes 801 are uniformly formed in the boss type surface, a cooling water inlet pipe 802 is arranged on the outer wall of the crystallizer 800, a continuous casting formed graphite pipe 803 is arranged in one end of the crystallizer 800, the continuous casting formed graphite pipe 803 is fixedly connected with the crystallizer 800 through a pressing block 805, a sealing gasket 804 is arranged on the outer wall of the continuous casting formed graphite pipe 803, and the sealing gasket 804 is located between the pressing block 805 and the crystallizer 800.
In the present structure of the apparatus for horizontal continuous casting based on a high-silicon aluminum alloy, preferably, the seal 804 includes, but is not limited to, calcium silicate.
EXAMPLE III
On the basis of the second embodiment, the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a heat insulation layer 701 arranged on the inner wall of the horizontal heat insulation furnace shell 700, a box body 702 is arranged on the outer wall of the horizontal heat insulation furnace shell 700, and a plurality of intrusion heaters 703 are arranged in the box body 702, wherein one ends of the intrusion heaters 703 are located on the horizontal heat insulation furnace shell 700 and used for heat insulation and heating of aluminum alloy melt in the horizontal heat insulation furnace shell 700.
In the horizontal continuous casting device based on the high-silicon aluminum alloy, the horizontal heat-insulating furnace shell 700 is formed by integrally forming an ore-associated refractory anti-stick aluminum castable, the invasion heater 703 is an internal heating type radiant tube, the shell is silicon carbide, the heating bodies are nitrogen carbon rods, the number of the heating bodies is 6, and each heating body is 8.5KW; the heat insulation layer 701 is a light heat insulation brick, and a high-density ceramic fiber board or a nanometer heat insulation board is arranged on the outer layer of the light heat insulation brick.
Example four
On the basis of the third embodiment, the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a refining degassing unit 400 used in cooperation with the heat-insulating pouring furnace 300, wherein a liquid discharge valve (not shown in fig. 2) is arranged at a connection part of the horizontal heat-insulating furnace shell 700 and the aluminum alloy melt through the crystallizer 800 and used for controlling the flow or blocking of the aluminum alloy melt in the horizontal heat-insulating furnace shell 700, and a first circulating water cooling structure 602 and a second circulating water cooling structure 603 (used for cooling the temperature in the pouring chute 600 and setting the casting temperature of the forming rod at 730-740 ℃) are arranged on outer walls at two ends of the pouring chute 600, wherein the first circulating water cooling structure 602 and the second circulating water cooling structure 603 are located at two sides of the temperature detector 601.
In the above embodiment, the model of the hydraulic aluminum alloy pouring melting furnace 100 is BH-500, the model of the heat preservation pouring furnace 300 is BK-800, the rod pulling speed of the casting machine 900 is 75-100mm/min, the stroke of the refining degassing machine 400 is 1500mm, the length of the rotary arm is 1200mm, the rotary arm has a rotating function, and the restoring function is realized after degassing is completed.
The utility model discloses a casting process of horizontal continuous casting device based on high-silicon aluminum alloy, its characterized in that: comprises the following steps of (a) preparing a solution,
step 1, melting high-silicon hypereutectic aluminum alloy in a hydraulic pouring aluminum alloy melting furnace 100, wherein the silicon content of the high-silicon hypereutectic aluminum alloy is 17%, and the melting temperature is 850 ℃.
And 2, transferring the molten high-silicon hypereutectic aluminum alloy liquid into the heat-preservation pouring furnace 300 through the liquid transferring chute 200, wherein the temperature of the high-silicon hypereutectic aluminum alloy liquid in the heat-preservation pouring furnace 300 is 730-740 ℃, and meanwhile, the refining degassing machine 400 is started to refine and degas the high-silicon hypereutectic aluminum alloy liquid in the heat-preservation pouring furnace 300.
And step 3, opening the servo control valve 500 to introduce the silicon hypereutectic aluminum alloy liquid to the horizontal heat-insulating furnace shell 700 through the pouring chute 600, wherein the temperature detector 601 is used for monitoring the temperature of the silicon hypereutectic aluminum alloy liquid.
And 4, pouring and molding the silicon hypereutectic aluminum alloy liquid through a crystallizer 800.
And step 5, leading out the casting forming rod through a casting machine 900, and cutting the casting forming rod through a cutting machine 1000.
In addition, when the aluminum bar formed by the silicon hypereutectic aluminum alloy liquid is stably pulled out of the crystallizer in the step 4 and the step 5, the bar pulling speed is 75-100mm/min.
Wherein, after testing, when the rod pulling speed in the step 4 and the step 5 is 75-mm/min, the cast molding rod has excellent quality, and the primary crystal silicon particles have the smallest size (approximately equal to 27 mu m) and the most uniform distribution at the rod pulling speed of 75 mm/min; the primary crystal silicon particles with the largest size (38 μm) are distributed unevenly at the pull rod speed of 100mm/min and 130mm/min, wherein the primary crystal silicon particles with the largest size are distributed unevenly at the pull rod speed of 130 mm/min.
FIGS. 3 to 6 are graphs showing the results of analysis of a bar pulling rate of 75mm/min, from micrographs and light
Lower part
Observing the polished section to obtain: 1. obvious macrosegregation exists, the upper part has more silicon, the lower part has less silicon, and a larger silicon-free alpha phase region exists (under the pulling speed of 75mm/min, alpha dendrite is less developed when being 130mm/min, and the grain size of primary crystal silicon is smaller); 2. the silicon particles in the upper half part are better in distribution uniformity than those in the lower half part; 3. the silicon particle distribution at the upper half edge and 1/2 radius area is approximately the same; 4. the distribution uniformity of silicon particles at the lower half edge is slightly better than that at the 1/2 radius; 5. the silicon grains in the central part are distributed approximately the same in other areas in the upper half, and a small area with less silicon grains is locally present.
FIGS. 7 to 10 are graphs showing the results of analysis of a bar pulling rate of 100mm/min from micrographs and lamps
Light (es)
The polished section is observed as follows: 1. there is slight macrosegregation with slightly more silicon in the upper half; 2. the silicon particles in the upper half part are better in distribution uniformity than those in the lower half part; 3. the silicon particle distribution of the upper half edge and the 1/2 radius area is approximately the same; 4. the distribution uniformity of silicon particles at the lower half edge is slightly better than that at the 1/2 radius; 5. the silicon grains in the central part are distributed approximately in the same other areas in the upper half part, and small blocks with less silicon grains are locally present.
FIGS. 11 to 14 are graphs showing the results of analysis of a bar pulling rate of 130mm/min, as seen from micrographs and observation of polished cross sections under light: 1. macro-segregation exists, with more silicon in the upper half; 2. the silicon particles in the upper half part are better in distribution uniformity than those in the lower half part; 3. the silicon particle distribution of the upper half edge area is slightly better than that at the radius of 1/2;
4. the distribution uniformity of silicon particles at the lower half edge is slightly better than that at the 1/2 radius; 5. the silicon particles in the central part are distributed more uniformly and have higher density, and a small low-density silicon particle area exists locally.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. Horizontal continuous casting device based on high-silicon aluminum alloy, its characterized in that: the device comprises a hydraulic aluminum alloy pouring melting furnace (100), a liquid transfer chute (200), a heat preservation pouring furnace (300), a servo control valve (500), a pouring chute (600), a horizontal heat preservation furnace shell (700), a crystallizer (800), a casting machine (900) and a cutting machine (1000); the hydraulic aluminum alloy pouring furnace comprises a hydraulic aluminum alloy pouring melting furnace (100), a liquid transferring chute (200), a heat preservation pouring furnace (300), a pouring chute (600) and a horizontal heat preservation furnace shell (700) which are sequentially connected, wherein aluminum alloy melt flows in the hydraulic aluminum alloy pouring melting furnace (100), the liquid transferring chute (200), the heat preservation pouring furnace (300), the pouring chute (600) and the horizontal heat preservation furnace shell (700) sequentially, a servo control valve (500) is installed on the heat preservation pouring furnace (300) and used for controlling flowing/blocking of the aluminum alloy melt, the crystallizer (800) is installed on one end face of the horizontal heat preservation furnace shell (700), the aluminum alloy melt flows out of the crystallizer (800) and enters the crystallizer (800) for forming, a casting machine (900) is used for leading out a forming rod, and the cutting machine (1000) is used for cutting off the forming rod.
2. The high-silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 1, wherein: the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a temperature detector (601) arranged on the outer wall of the pouring chute (600) and used for monitoring and displaying the temperature of the aluminum alloy melt in the pouring chute (600).
3. The high silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 2, wherein: crystallizer (800) sets up to circular cavity structure, crystallizer (800) is inside to set up to the boss type, the boss profile evenly is provided with cooling water hole for water spraying (801), crystallizer (800) outer wall is provided with cooling water inlet tube (802), be provided with continuous casting shaping graphite pipe (803) in crystallizer (800) one end, continuous casting shaping graphite pipe (803) are through compact heap (805) and crystallizer (800) fixed connection, wherein, continuous casting shaping graphite pipe (803) outer wall is provided with sealed pad (804), sealed pad (804) are located compact heap (805), between crystallizer (800).
4. The high silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 3, wherein: the seal (804) includes, but is not limited to, calcium silicate.
5. The high silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 3, wherein: the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a heat insulation layer (701) arranged on the inner wall of the horizontal heat insulation furnace shell (700), a box body (702) is arranged on the outer wall of the horizontal heat insulation furnace shell (700), and a plurality of intrusion heaters (703) are arranged in the box body (702), wherein one end of the intrusion heater (703) is located on the horizontal heat insulation furnace shell (700) and used for heat insulation and heating of aluminum alloy melt in the horizontal heat insulation furnace shell (700).
6. The high silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 5, wherein: the horizontal heat preservation furnace shell (700) is integrally formed by combined-ore fireproof anti-stick aluminum casting materials, the invasion heater (703) is an internal heating type radiant tube, the shell is silicon carbide, the heating body is a nitrogen-carbon rod, and each heating body is 8.5KW; the heat insulation layer (701) is a light heat insulation brick, and a high-density ceramic fiberboard or a nanometer heat insulation board is arranged on the outer layer of the light heat insulation brick.
7. The high-silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 6, wherein: the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a refining degasser (400) matched with the heat-insulating pouring furnace (300) for use, wherein a liquid discharging valve is arranged on the connecting portion of the horizontal heat-insulating furnace shell (700) and the aluminum alloy melt through the crystallizer (800).
8. The high-silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 7, wherein: the horizontal continuous casting device based on the high-silicon aluminum alloy further comprises a first circulating water cooling structure (602) and a second circulating water cooling structure (603) which are arranged on the outer walls of the two ends of the pouring chute (600), wherein the first circulating water cooling structure (602) and the second circulating water cooling structure (603) are located on the two sides of the temperature detector (601).
9. The high-silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 1, wherein: the model of the hydraulic pouring aluminum alloy melting furnace (100) is BH-500, the model of the heat preservation pouring furnace (300) is BK-800, and the rod pulling speed of the casting machine (900) is 75-100mm/min.
10. The high-silicon aluminum alloy-based horizontal continuous casting apparatus according to claim 7, wherein: the stroke of the refining degasser (400) is 1500mm, and the length of the rotary arm is 1200mm.
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| CN202220904942.2U CN217889460U (en) | 2022-04-19 | 2022-04-19 | Horizontal continuous casting device based on high-silicon aluminum alloy |
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| CN202220904942.2U CN217889460U (en) | 2022-04-19 | 2022-04-19 | Horizontal continuous casting device based on high-silicon aluminum alloy |
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