CN215697834U - Casting nozzle for high-speed casting and rolling - Google Patents
Casting nozzle for high-speed casting and rolling Download PDFInfo
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- CN215697834U CN215697834U CN202121587151.3U CN202121587151U CN215697834U CN 215697834 U CN215697834 U CN 215697834U CN 202121587151 U CN202121587151 U CN 202121587151U CN 215697834 U CN215697834 U CN 215697834U
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Abstract
The utility model relates to a casting nozzle for high-speed casting and rolling, which belongs to the technical field of aluminum alloy casting and rolling and comprises an upper nozzle plate and a lower nozzle plate which are oppositely arranged, wherein a casting cavity for passing casting liquid is formed between the upper nozzle plate and the lower nozzle plate, and one sides of the upper nozzle plate and the lower nozzle plate, which are close to the casting cavity, are provided with oppositely arranged grooves so as to form a slagging section. The utility model effectively increases the slagging space, avoids the influence of a slagging layer on the surface of a cast-rolling piece, increases the service time of the casting nozzle, exerts the speed advantage of high-speed casting and rolling and effectively improves the yield of an aluminum casting and rolling line.
Description
Technical Field
The utility model belongs to the technical field of aluminum alloy cast rolling, and relates to a casting nozzle for high-speed cast rolling.
Background
The casting nozzle is a very key tool in the aluminum casting and rolling production process, and plays a role in stabilizing a flow field and stably transferring aluminum liquid. Besides influencing the uniformity of the aluminum liquid, the nozzle plate continuously exchanges heat outwards along with the production, slag in the aluminum liquid can be adhered to the inner wall of the nozzle, the surface of the aluminum plate is uneven, the flow space is compressed if the aluminum liquid is heavy, the flow of the aluminum liquid is insufficient, the smooth casting and rolling process of the aluminum liquid is interrupted, and the production efficiency is influenced. Meanwhile, gas contained in the aluminum liquid is easy to gather at the slag adhering position or enter the casting and rolling area along the inner wall of the upper side of the casting nozzle, so that the product defects are caused. Under the development of the existing high-speed casting and rolling technology, the casting and rolling speed is higher (more than 5 m/min), the aluminum flux is increased, the service time of a common nozzle plate is shorter, and the exertion of the production energy of the high-speed casting and rolling technology is further limited.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a nozzle for high-speed casting and rolling to solve the problem of the influence of the slag layer on the cast and rolled piece.
In order to achieve the purpose, the utility model provides the following technical scheme:
a casting nozzle for high-speed casting and rolling comprises an upper nozzle plate and a lower nozzle plate which are oppositely arranged, a casting cavity for casting liquid to pass through is formed between the upper nozzle plate and the lower nozzle plate, and oppositely arranged grooves are formed in one sides, close to the casting cavity, of the upper nozzle plate and one side, close to the casting cavity, of the lower nozzle plate to form a slagging section.
Optionally, the upper part of the slagging section is provided with a plurality of vent holes along the length direction thereof so as to enable gas in the casting liquid to float upwards and escape through the vent holes.
Optionally, the exhaust holes are arranged in a plurality of rows in an alternating staggered manner.
Optionally, the vent holes have a diameter of no greater than 10 mm.
Optionally, the groove depth is no greater than 30 mm.
Optionally, a plurality of flow stabilizing blocks are arranged in the casting cavity.
Optionally, the casting nozzle has a three-layer structure, which is an inner layer, a ventilation insulating layer and an outer layer sequentially arranged from inside to outside, and the inner layer is provided with a plurality of exhaust holes corresponding to the slagging section and communicating the casting cavity with the ventilation insulating layer, so that gas in the casting liquid floats upwards and escapes from the ventilation insulating layer through the exhaust holes.
Optionally, the inner layer of the casting nozzle is made of aluminum silicate materials, the breathable heat-insulating layer is made of high-temperature-resistant heat-insulating fiber cotton, the outer layer of the casting nozzle is made of heat-insulating fiber boards, and the three layers of the casting nozzle are fixedly connected.
Optionally, the front edge of the lower nozzle plate is fitted with the lower roller surface of the casting and rolling zone, the front edge of the upper nozzle plate is fitted with the upper roller surface of the casting and rolling zone, and the end surfaces of the operation side nozzle plate and the transmission side nozzle plate located on both sides of the outlet end of the casting cavity are consistent with the end surfaces formed by the upper nozzle plate and the lower nozzle plate.
The utility model has the beneficial effects that:
1. the utility model effectively increases the slagging space, avoids the influence of a slagging layer on the surface of a cast-rolling piece, increases the service time of the casting nozzle, exerts the speed advantage of high-speed casting and rolling and effectively improves the yield of an aluminum casting and rolling line.
2. The utility model increases the exhaust channel while preserving heat, and the gas overflows after entering the middle ventilating and insulating layer, thereby avoiding the gas accumulation in the aluminum liquid and improving the formability and the product quality of the aluminum plate.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of the present invention.
Reference numerals: the air-permeable heat-insulating layer comprises a lower nozzle plate 1, an upper nozzle plate 2, a lower air-permeable heat-insulating layer 3, an upper air-permeable heat-insulating layer 4, a lower cover plate 5, an upper cover plate 6, an exhaust hole 7, a lower nozzle plate concave groove 8 and an upper nozzle plate concave groove 9.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a casting nozzle for high-speed casting and rolling is located between a front box and a casting and rolling area, and includes an upper nozzle plate 2 and a lower nozzle plate 1 which are oppositely arranged, a casting cavity for passing casting liquid is formed between the upper nozzle plate 2 and the lower nozzle plate 1, and opposite grooves are formed on one sides of the upper nozzle plate 2 and the lower nozzle plate 1 close to the casting cavity to form a slagging segment.
According to the utility model, the grooves are arranged on one sides of the upper nozzle plate 2 and the lower nozzle plate 1 close to the casting cavity to form the slagging section, so that the slagging space is effectively increased, the influence of a slagging layer on the surface of a cast-rolling piece is avoided, the service time of the casting nozzle is prolonged, the speed advantage of high-speed casting-rolling is exerted, and the yield of an aluminum casting-rolling line is effectively improved.
Preferably, the depth of the groove is no greater than 30 mm.
The utility model arranges a plurality of vent holes 7 on the upper part of the slagging section along the length direction thereof to enable the gas in the casting liquid to float upwards and escape through the vent holes 7, thereby increasing the vent passage, avoiding the gas accumulation in the aluminum liquid and improving the formability and the product quality of the aluminum plate.
Preferably, the exhaust holes 7 are arranged in a plurality of rows in an alternating staggered manner, and the diameter of the exhaust holes 7 is not more than 10 mm.
Preferably, a plurality of flow stabilizing blocks are arranged in the casting cavity side by side at intervals, so that the flow velocity of the casting liquid at the outlet end is uniform and stable, the phenomena of high flow velocity in the middle and low flow velocity at two sides of the outlet end of the casting cavity are avoided, and the quality of cast-rolled pieces is effectively improved. The flow stabilizer block is preferably disposed adjacent the outlet end of the casting cavity.
Preferably, the casting nozzle has a three-layer structure, namely an inner layer, a breathable heat-insulating layer and an outer layer which are sequentially arranged from inside to outside; the inner layer is made of aluminum silicate material, the breathable heat-insulating layer is made of high-temperature-resistant heat-insulating fiber cotton, the outer layer is made of heat-insulating fiber boards, and the three layers are fixedly connected; the inner layer is provided with a plurality of exhaust holes 7 which are communicated with the casting cavity and the breathable heat-insulating layer corresponding to the slagging section, so that gas in the casting liquid floats upwards and escapes from the breathable heat-insulating layer through the exhaust holes 7, and an exhaust channel is increased while heat is kept.
Preferably, in the utility model, the front edge of the lower nozzle plate 1 is matched with the lower roller surface of the casting area, the front edge of the upper nozzle plate 2 is matched with the upper roller surface of the casting area, and the end surfaces of the operation side nozzle plate and the transmission side nozzle plate which are positioned at two sides of the outlet end of the casting cavity are consistent with the end surfaces formed by the upper nozzle plate 2 and the lower nozzle plate 1, so that the structure of the casting nozzle is more compact.
The utility model optimizes the casting nozzle, increases the melt exhaust function, increases the slag adhering space, prolongs the service life of the casting nozzle, increases the productivity of the cast-rolling mill group, and solves the problems that the slag bonding on the inner wall of the casting nozzle plate easily affects the surface of the aluminum plate, the exhaust performance is poor and the utilization rate is low in the existing aluminum cast-rolling production.
Examples
A nozzle for high speed casting and rolling connected to a front box, comprising: the lower nozzle plate 1, the upper nozzle plate 2, the lower breathable heat-insulating layer 3, the upper breathable heat-insulating layer 4, the lower cover plate 5, the upper cover plate 6, the operation side nozzle plate, the transmission side nozzle plate and more than two flow stabilizing blocks, wherein a lower nozzle plate concave groove 8 and an upper nozzle plate concave groove 9 are oppositely arranged on the inner sides of the lower nozzle plate 1 and the upper nozzle plate 2, and a plurality of exhaust holes 7 are formed in the position, corresponding to the upper nozzle plate concave groove 9, of the upper nozzle plate 2.
Specifically, the method comprises the following steps:
the middle of the inner side of the upper nozzle plate 2 is of a concave structure, the depth of the groove is not more than 30mm, more than two rows of exhaust holes 7 are transversely arranged at the upper part of the groove, each exhaust hole 7 is alternately arranged in a staggered manner, and the aperture of each exhaust hole 7 is not more than 10 mm; the middle of the inner side of the lower nozzle plate 1 has the same concave structure as the upper nozzle plate 2.
The casting nozzle has a three-layer structure, the inner layer comprises a lower nozzle plate 1 and an upper nozzle plate 2 and is made of aluminum silicate material; the middle layer is a ventilating and insulating layer, comprises a lower ventilating and insulating layer 3 and an upper ventilating and insulating layer 4 and consists of high-temperature-resistant heat-insulating cellucotton; the outer layer comprises a lower cover plate 5 and an upper cover plate 6, and is made of a heat-insulating fiberboard, and the three-layer structure is connected in a screw riveting mode.
More than two flow stabilizing blocks are arranged between the upper nozzle plate 2 and the lower nozzle plate 1 of the casting nozzle so as to ensure that the flow velocity of the casting liquid at the outlet end is uniform and stable.
The front edge of the lower nozzle plate of the casting nozzle is matched with the roller surface of the lower roller, the front edge of the upper nozzle plate is matched with the roller surface of the upper roller, and the end surfaces of the two side nozzle plates are consistent with the end surfaces formed by the upper nozzle plate 2 and the lower nozzle plate 1.
Before casting production, a lower nozzle plate 1, a lower breathable heat-insulating layer 3 and a lower cover plate 5 are fixed into a lower nozzle fan according to the structure shown in figure 1, an upper nozzle plate 2, an upper breathable heat-insulating layer 4 and an upper cover plate 6 are fixed into an upper nozzle fan according to the structure shown in figure 1, and the two nozzle fans, a middle flow stabilizing block, heat-insulating cotton and side nozzle plates are all placed in a heat-insulating box for heat insulation. The furnace chamber of the heat preservation box is kept at the constant temperature of 150 ℃, and the heat preservation time of each pair of nozzles is more than 6 hours, so that the heat preservation box can be used. Taking the nozzle fan, the flow stabilizing block and the side nozzle plate which are processed in advance out of the heat preservation furnace, assembling, placing the assembled casting nozzle on a feeding trolley, pushing the feeding trolley in to enable the casting nozzle to be in contact with the surface of the roller, pushing the casting nozzle forwards for 5mm each time to grind the casting nozzle until a required casting area is obtained, and stopping the rotation of the rolling mill.
In the casting and rolling process, aluminum liquid continuously flows from the front box through the casting nozzle, enters the casting and rolling area to be solidified and rolled into an aluminum plate. When aluminium liquid is flowing through the casting nozzle, aluminium liquid is because the better heat preservation effect of casting nozzle rarely has the aluminium of condensation, and the slag in the aluminium liquid is most attached to the recess inner wall of casting nozzle inlayer, does not influence aluminium liquid normal circulation passageway and aluminum surface to the live time of extension casting nozzle improves production efficiency. Meanwhile, when the aluminum liquid flows through the casting nozzle, gas in the aluminum liquid can float upwards and escape from the upper ventilating and insulating layer 4 through the exhaust holes 7 positioned at the concave grooves 9 of the upper nozzle plate, so that the purity of the aluminum liquid is improved, and the quality of the aluminum plate is improved.
The utility model effectively increases the slagging space, avoids the influence of a slagging layer on the cast-rolling surface, increases the service time of the casting nozzle, exerts the speed advantage of high-speed cast-rolling and effectively improves the yield of the aluminum cast-rolling line; the heat preservation is realized, meanwhile, an exhaust channel is also added, and gas overflows after entering the middle ventilating heat preservation layer, so that the gas in the aluminum liquid is prevented from being gathered, and the formability and the product quality of the aluminum plate are improved.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a casting nozzle for cast-rolling at a high speed, includes relative last nozzle plate and lower nozzle plate that sets up, is formed with the casting cavity that supplies the casting liquid to pass through between last nozzle plate and the lower nozzle plate, its characterized in that: the upper nozzle plate and the lower nozzle plate are provided with oppositely arranged grooves at one side close to the casting cavity to form a slagging section.
2. A nozzle for high speed casting and rolling according to claim 1, wherein: and the upper part of the slagging section is provided with a plurality of exhaust holes along the length direction of the slagging section so as to enable gas in the casting liquid to float upwards and escape through the exhaust holes.
3. A nozzle for high speed casting according to claim 2, wherein: the exhaust holes are alternately arranged in a staggered manner in multiple rows.
4. A nozzle for high speed casting according to claim 2, wherein: the diameter of the vent hole is not more than 10 mm.
5. A nozzle for high speed casting and rolling according to claim 1, wherein: the depth of the groove is not more than 30 mm.
6. A nozzle for high speed casting and rolling according to claim 1, wherein: and a plurality of flow stabilizing blocks are arranged in the casting cavity.
7. A nozzle for high speed casting and rolling according to claim 1, wherein: the casting nozzle is of a three-layer structure and comprises an inner layer, a ventilating heat-insulating layer and an outer layer which are sequentially arranged from inside to outside, wherein the inner layer is provided with a plurality of exhaust holes communicated with the casting cavity and the ventilating heat-insulating layer corresponding to the slagging section so that gas in casting liquid floats upwards and escapes from the ventilating heat-insulating layer through the exhaust holes.
8. A nozzle for high speed casting according to claim 7, wherein: the inner layer of the casting nozzle is made of aluminum silicate materials, the breathable heat-insulating layer is made of high-temperature-resistant heat-insulating fiber cotton, the outer layer of the casting nozzle is made of heat-insulating fiber boards, and the three-layer structure of the casting nozzle is fixedly connected.
9. A nozzle for high speed casting and rolling according to claim 1, wherein: the front edge of the lower nozzle plate is matched with the roller surface of the lower roller of the casting and rolling area, the front edge of the upper nozzle plate is matched with the roller surface of the upper roller of the casting and rolling area, and the end surfaces of the operation side nozzle plate and the transmission side nozzle plate which are positioned at two sides of the outlet end of the casting cavity are consistent with the end surfaces formed by the upper nozzle plate and the lower nozzle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121587151.3U CN215697834U (en) | 2021-07-13 | 2021-07-13 | Casting nozzle for high-speed casting and rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121587151.3U CN215697834U (en) | 2021-07-13 | 2021-07-13 | Casting nozzle for high-speed casting and rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215697834U true CN215697834U (en) | 2022-02-01 |
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ID=79986417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121587151.3U Active CN215697834U (en) | 2021-07-13 | 2021-07-13 | Casting nozzle for high-speed casting and rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215697834U (en) |
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2021
- 2021-07-13 CN CN202121587151.3U patent/CN215697834U/en active Active
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