Holding furnace for aluminum cast-rolled coil production

Abstract

The utility model provides a heat preservation furnace for aluminum cast-rolled coil production. The heat preservation furnace comprises a furnace body, a heating assembly, a heat preservation assembly, a stirring assembly and a feeding assembly. The furnace body is of a cylindrical structure and sequentially comprises a lining layer, a heat preservation layer and a shell layer from inside to outside, the lining layer is made of high-temperature-resistant and erosion-resistant refractory materials, the heat preservation layer is composed of multiple layers of different heat preservation materials, and the shell layer is made of stainless steel materials. The heating assembly is arranged on the outer side of the furnace body and comprises a plurality of electric heating elements and temperature sensors, the electric heating elements are evenly distributed in the circumferential direction of the furnace body, and the temperature sensors are installed at different positions in the furnace body; the heat preservation assembly comprises a furnace cover and a sealing assembly, the furnace cover is of a multi-layer heat preservation structure the same as that of the furnace body, and the sealing assembly is arranged at the joint of the furnace cover and the furnace body. And the production quality and efficiency of aluminum cast-rolled coils can be remarkably improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum casting and rolling equipment, and in particular to a heat preservation furnace for aluminum casting and rolling production. Background Technology

[0002] In the production process of aluminum cast coils, the holding furnace plays a crucial role. The holding furnace is mainly used to store and maintain the temperature of molten aluminum, providing a stable and uniformly composed molten aluminum solution for subsequent casting and rolling processes. The temperature of the molten aluminum directly affects the quality of the cast coil product. Excessive temperature can lead to defects such as porosity and cracks on the surface of the cast coil, while excessively low temperature will reduce the fluidity of the molten aluminum, affecting the smooth progress of casting and rolling, and even causing blockages in the casting and rolling mill.

[0003] Currently, existing holding furnaces used in aluminum casting and rolling production have several problems. On the one hand, the insulation effect is unsatisfactory, heat dissipation is rapid, and a large amount of energy is required to maintain the temperature of the molten aluminum, increasing production costs. This is mainly due to the unreasonable insulation layer structure, poor performance of the insulation materials, and poor furnace sealing performance. On the other hand, existing holding furnaces are inadequate in controlling the uniformity of the molten aluminum composition. The molten aluminum is prone to stratification within the furnace, resulting in inconsistent aluminum composition in different areas and affecting the quality of the cast and rolled coils. Therefore, it is necessary to design a new holding furnace for aluminum casting and rolling production. Summary of the Invention

[0004] This utility model provides a heat preservation furnace for aluminum casting and rolling production, which solves the problems of poor heat preservation effect and uneven aluminum liquid composition in existing heat preservation furnaces, thereby achieving the purpose of improving the production quality and efficiency of aluminum casting and rolling, and reducing production costs.

[0005] This utility model provides a heat preservation furnace for aluminum casting and rolling production, including a furnace body, a heating component, a heat preservation component, a stirring component, and a feeding component;

[0006] The furnace body has a cylindrical structure and includes an inner lining layer, an insulation layer and an outer shell layer from the inside out. The inner lining layer is made of high-temperature resistant and corrosion-resistant refractory material, the insulation layer is composed of multiple layers of insulation materials of different materials, and the outer shell layer is made of stainless steel.

[0007] The heating assembly is located on the outside of the furnace body and includes multiple electric heating elements and temperature sensors. The electric heating elements are evenly distributed in the circumferential direction of the furnace body, and the temperature sensors are installed in different positions inside the furnace body.

[0008] The insulation component includes a furnace cover and a sealing component. The furnace cover is hinged to the furnace body, and the sealing component is located at the connection between the furnace cover and the furnace body.

[0009] Preferably, the stirring assembly includes a stirring motor, a stirring shaft, and a stirring paddle. The stirring motor is installed above the furnace cover, and the output shaft of the stirring motor is connected to the stirring shaft via a coupling. The stirring shaft extends vertically into the furnace body, and the stirring paddle is installed at the lower end of the stirring shaft.

[0010] Preferably, the feeding assembly includes a feeding hopper and a feeding pipe. The feeding hopper is located above the furnace body, and the feeding pipe is connected to the feeding hopper and extends into the furnace body. A control valve is provided on the feeding pipe.

[0011] Preferably, the insulation layer is composed of rock wool board, aluminum silicate fiber felt and vacuum insulation board stacked in sequence, and the rock wool board and aluminum silicate fiber felt are bonded together, and the aluminum silicate fiber felt and vacuum insulation board are bonded together with an adhesive.

[0012] Preferably, the electric heating element is an electric heating wire, which is spirally wound around the outer shell of the furnace body, and an insulating heat insulation layer is provided between the electric heating element and the outer shell.

[0013] Preferably, the sealing assembly includes an annular groove and a high-temperature resistant rubber sealing ring, the annular groove being disposed on the inner edge of the furnace cover, and the high-temperature resistant rubber sealing ring being embedded in the annular groove.

[0014] Beneficial effects:

[0015] (1) The present invention has a novel structural design, excellent heat preservation performance of the heat preservation furnace, can effectively ensure uniform aluminum liquid composition, is easy to operate, and has high safety. It can significantly improve the production quality and efficiency of aluminum casting and rolling coils and reduce production costs.

[0016] (2) The stirring component used in this utility model can stir the aluminum liquid, promote the uniform mixing of the components of the aluminum liquid, prevent the aluminum liquid from stratifying, ensure that the aluminum liquid composition in different parts is consistent, and improve the quality of the cast and rolled coil.

[0017] (3) The electric heating elements used in this utility model are evenly distributed in the circumferential direction of the furnace body, which can heat the furnace body evenly and ensure the uniformity of the aluminum liquid temperature.

[0018] The above description is merely an overview of the technical solutions of the present utility model embodiments. In order to better understand the technical means of the present utility model embodiments and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present utility model embodiments more obvious and understandable, specific embodiments of the present utility model are described below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the heating component of this utility model;

[0022] Figure 3 This is a schematic diagram of the installation of the mixing component and the feeding component of this utility model;

[0023] Figure 4 This is a cross-sectional view of the insulation layer of this utility model;

[0024] Explanation of reference numerals in the attached drawings: 1. Furnace body; 2. Inner lining; 3. Insulation layer; 4. Outer shell; 5. Electric heating element; 6. Temperature sensor; 7. Furnace cover; 8. Stirring motor; 9. Stirring shaft; 10. Stirring paddle; 11. Feeding hopper; 12. Feeding pipe; 13. Control valve; 14. Rock wool board; 15. Aluminum silicate fiber felt; 16. Vacuum insulation board; 17. Annular groove; 18. High-temperature resistant rubber sealing ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this invention are intended to cover non-exclusive inclusion.

[0027] Furthermore, the terms "first," "second," etc., in the specification, claims, or drawings of this utility model are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by fasteners, such as screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Please see Figures 1-4 This utility model discloses a heat preservation furnace for aluminum casting and rolling production, including a furnace body 1, a heating component, a heat preservation component, a stirring component, and a feeding component;

[0031] The furnace body 1 has a cylindrical structure. From the inside to the outside, the furnace body 1 includes an inner lining layer 2, an insulation layer 3, and an outer shell layer 4. The inner lining layer 2 is made of high-temperature resistant and corrosion-resistant refractory material, which can withstand the scouring and erosion of high-temperature aluminum liquid and extend the service life of the furnace body. The insulation layer 3 is composed of multiple layers of insulation materials of different materials. The outer shell layer 4 is made of stainless steel.

[0032] The heating assembly is located on the outside of the furnace body 1 and includes multiple electric heating elements 5 and temperature sensors 6. The electric heating elements 5 are evenly distributed around the circumference of the furnace body 1, and the temperature sensors 6 are installed at different locations inside the furnace body 1. The electric heating elements 5 are made of electric heating wire, which is spirally wound around the outside of the outer shell layer 4 of the furnace body 1, and an insulating layer is provided between the electric heating elements 5 and the outer shell layer 4. This allows for uniform heating of the furnace body, ensuring the uniformity of the aluminum liquid temperature. The temperature sensors installed at different locations inside the furnace body monitor the temperature of the aluminum liquid in real time.

[0033] The insulation assembly includes a furnace cover 7 and a sealing assembly. The furnace cover 7 is hinged to the furnace body 1. The sealing assembly is located at the connection between the furnace cover 7 and the furnace body 1. The sealing assembly includes an annular groove 17 and a high-temperature resistant rubber sealing ring 18. The annular groove 17 is located on the inner edge of the furnace cover 7, and the high-temperature resistant rubber sealing ring 18 is embedded in the annular groove 17. The depth of the annular groove matches the thickness of the high-temperature resistant rubber sealing ring, and the inner wall of the annular groove is provided with anti-slip texture to enhance the connection stability between the high-temperature resistant rubber sealing ring and the furnace body.

[0034] In this invention, the stirring assembly includes a stirring motor 8, a stirring shaft 9, and a stirring paddle 10. The stirring motor 8 is installed above the furnace cover 7, and its output shaft is connected to the stirring shaft 9 via a coupling. The stirring shaft 9 extends vertically into the furnace body 1, and the stirring paddle 10 is installed at the lower end of the stirring shaft 9. This structure effectively stirs the molten aluminum, promotes uniform mixing of its components, and prevents stratification.

[0035] In addition, in this utility model, the feeding assembly includes a feeding hopper 11 and a feeding pipe 12. The feeding hopper 11 is located above the furnace body 1, and the feeding pipe 12 is connected to the feeding hopper 11 and extends into the furnace body 1. A control valve 13 is provided on the feeding pipe 12. The feeding speed and flow rate are controlled by the control valve to ensure the stability and safety of the feeding process.

[0036] In this invention, the insulation layer 3 is composed of rock wool board 14, aluminum silicate fiber felt 15, and vacuum insulation board 16 stacked sequentially. The rock wool board 14 and aluminum silicate fiber felt 15 are bonded together, and the aluminum silicate fiber felt 15 is bonded to the vacuum insulation board 16, using an adhesive. This insulation layer can improve the insulation effect of the furnace and further improve the production quality of aluminum cast coils.

[0037] Working principle: When it is necessary to keep the molten aluminum warm, the molten aluminum is first added into the furnace body through the feeding component. After the feeding is completed, the furnace cover is closed, the heating component starts to work, the electric heating element heats the furnace body, the temperature sensor monitors the temperature of the molten aluminum in real time and transmits the temperature signal to the external control system. The external control system automatically adjusts the heating power of the electric heating element according to the set temperature value to keep the temperature of the molten aluminum within the set range. During the heat preservation process, the stirring component is started, the stirring motor drives the stirring shaft and stirring paddle to rotate, stirring the molten aluminum and promoting the uniform mixing of the components of the molten aluminum. When it is necessary to add molten aluminum to the heat preservation furnace, the control valve of the feeding component is opened, and the molten aluminum is added into the furnace body through the feeding hopper.

[0038] In summary, this utility model features a novel structural design, excellent heat preservation performance of the holding furnace, effective guarantee of uniform aluminum liquid composition, convenient operation, and high safety. It can significantly improve the production quality and efficiency of aluminum casting and rolling, and reduce production costs.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat-holding furnace for aluminum casting and rolling production, characterized in that, It includes a furnace body (1), a heating component, a heat preservation component, a stirring component, and a feeding component; The furnace body (1) is a cylindrical structure. The furnace body (1) includes an inner lining layer (2), an insulation layer (3) and an outer shell layer (4) from the inside to the outside. The inner lining layer (2) is made of refractory material that is resistant to high temperature and corrosion. The insulation layer (3) is composed of multiple layers of insulation material of different materials. The outer shell layer (4) is made of stainless steel. The heating assembly is located on the outside of the furnace body (1) and includes multiple electric heating elements (5) and temperature sensors (6). The electric heating elements (5) are evenly distributed in the circumferential direction of the furnace body (1), and the temperature sensors (6) are installed in different positions inside the furnace body (1). The heat preservation component includes a furnace cover (7) and a sealing component. The furnace cover (7) is hinged to the furnace body (1), and the sealing component is located at the connection between the furnace cover (7) and the furnace body (1).

2. The holding furnace for aluminum casting and rolling production according to claim 1, characterized in that, The stirring assembly includes a stirring motor (8), a stirring shaft (9), and a stirring paddle (10). The stirring motor (8) is installed above the furnace cover (7). The output shaft of the stirring motor (8) is connected to the stirring shaft (9) via a coupling. The stirring shaft (9) extends vertically into the furnace body (1). The stirring paddle (10) is installed at the lower end of the stirring shaft (9).

3. The holding furnace for aluminum casting and rolling production according to claim 1, characterized in that, The feeding assembly includes a feeding hopper (11) and a feeding pipe (12). The feeding hopper (11) is located above the furnace body (1). The feeding pipe (12) is connected to the feeding hopper (11) and extends into the furnace body (1). A control valve (13) is provided on the feeding pipe (12).

4. The holding furnace for aluminum casting and rolling production according to claim 1, characterized in that, The insulation layer (3) is composed of rock wool board (14), aluminum silicate fiber felt (15) and vacuum insulation board (16) stacked in sequence. The rock wool board (14) and aluminum silicate fiber felt (15) are bonded together, and the aluminum silicate fiber felt (15) and vacuum insulation board (16) are bonded together with adhesive.

5. A heat-holding furnace for aluminum casting and rolling production according to claim 1, characterized in that, The electric heating element (5) is an electric heating wire, which is spirally wound around the outer shell layer (4) of the furnace body (1), and an insulating heat insulation layer is provided between the electric heating element (5) and the outer shell layer (4).

6. A holding furnace for aluminum casting and rolling production according to claim 1, characterized in that, The sealing assembly includes an annular groove (17) and a high-temperature resistant rubber sealing ring (18). The annular groove (17) is located on the inner edge of the furnace cover (7), and the high-temperature resistant rubber sealing ring (18) is embedded in the annular groove (17).

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