Casting roller structure for aluminum casting and rolling
By setting the cooling water channel on the inner wall of the aluminum cast roll sleeve, the problems of vulnerability of the roller sleeve and thermal fatigue of the roller core are solved, the wear resistance and service life of the roller core and roller sleeve are improved, and the aluminum casting and rolling process is ensured. cooling effect and surface quality.
Patent Information
- Application Number
- CN202420085800.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-12
AI Technical Summary
During the aluminum casting and rolling process, the roller sleeve is vulnerable to the deformation or melting of the waterway due to the high temperature environment, which requires frequent grinding, which affects the service life. In traditional design, the roller core is densely distributed in waterways, which leads to thermal fatigue, which is difficult to avoid. Deformation.
The water channel of cooling water is arranged on the inner wall of the roller sleeve. The surface of the roller core is a smooth overall structure. The roller sleeve is a wearable piece that directly contacts the high-temperature aluminum liquid. The water channel on the inner surface remains operating normally, increasing the cooling effect and improving wear resistance.
The service life of the roller core and roller sleeve is extended, the thermal fatigue deformation of the roller core and the frequency of the roller sleeve are reduced, and the cooling water cycle stability and the surface quality of the aluminum plate are ensured during the casting and rolling process.
Smart Images
Figure CN222153378U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting rolls, in particular to a casting roll structure for aluminum casting. Background Art
[0002] Reference Figure 1 The existing casting roll is composed of a roll core 1 and a roll sleeve 2, a water channel 3 for cooling water is arranged between the two, and the water channel 3 is opened on the roll core 1. The roll core 1 is also provided with a water inlet hole 4 and a water outlet hole 5 which are connected with the water channel 3 at the same time.
[0003] In the aluminum casting process, the roller sleeve plays a dual role as a crystallizer and a hot rolling roller. Its working principle is as follows: the molten aluminum flows into the gap between the two roller sleeves through the flow channel. At the moment of contact with the roller sleeve, the temperature of the aluminum liquid quickly drops below the melting point, and then it is rolled into a slab under the rolling of the roller sleeve. With the cooling of cooling water, the casting and rolling equipment can operate continuously for continuous production.
[0004] During the aluminum casting and rolling production process, the roller core is a consumable part and is not easily replaced; while the roller sleeve is the main component of the continuous casting and rolling equipment for producing aluminum and aluminum alloy slab coils. The roller sleeve will wear during the rolling process, and because it is in direct contact with high-temperature molten aluminum liquid, it is prone to periodic cracks. It is a wearing part and therefore needs to be scrapped and replaced after reaching its service limit.
[0005] The inner wall of the roller sleeve of the traditional copper alloy cast roller is a smooth structure without water channels, and the water inlet and outlet holes and water channels are all set on the steel roller core. Although the roller core is not in direct contact with the aluminum liquid, the high temperature environment during the production process will continue to transfer heat to the surface of the roller core through the roller sleeve, and the raised part of the water channel on the surface of the roller core will bear the brunt. In the continuous production process, it will gradually deform or melt, and in severe cases, water leakage will occur. Therefore, the roller core needs to be frequently repaired during the production process. The specific method is: first weld the deformed or melted part, and then turn it to the appropriate size. On the one hand, this grinding method has a large workload because the water channels are densely distributed on the entire surface of the roller core, and its width is narrow, requiring high processing accuracy; on the other hand, the performance of the subsequent welded part is different from that of the original roller core matrix, so the service life of the welded part will be shortened. Utility Model Content
[0006] The utility model aims at the deficiencies in the prior art and provides a casting roller structure for aluminum casting and rolling. The cooling water channel is arranged on the inner wall of the roller sleeve. The roller core surface is a smooth integral structure, which is more durable and not prone to thermal fatigue deformation. The roller sleeve is a wearing part and needs to be replaced regularly. When the outer surface in direct contact with the high-temperature aluminum liquid reaches the service limit, the water channel on the inner surface will still be in a normal operating state.
[0007] The technical solution of the utility model to solve the above technical problems is as follows:
[0008] A casting roller structure for aluminum casting and rolling comprises a roller core and a roller sleeve sleeved on the roller core. The roller sleeve is provided with a water channel, and the water channel is located between the inner wall of the roller sleeve and the outer wall of the roller core.
[0009] By adopting the above technical solution, the cooling water channel is set on the inner wall of the roller sleeve. Compared with the prior art in which the water channel is opened on the roller core, the roller core surface is a smooth integral structure, which is more durable and not prone to thermal fatigue deformation. The roller sleeve is a wearing part and needs to be replaced regularly. When the outer surface in direct contact with the high-temperature aluminum liquid reaches the service limit, the water channel on the inner surface will still be in normal operation.
[0010] Furthermore, the roller core is provided with a water inlet hole and a water outlet hole which are simultaneously connected to the water channel.
[0011] By adopting the above technical solution, only the water inlet and outlet holes are left in the roller core, and the surface of the roller core is smooth as a whole. After the roller sleeve and the roller core are assembled and tightly combined, a closed water path can still be formed for the circulation of cooling water in and out.
[0012] Furthermore, the cross-section of the water channel along the axial direction of the roller sleeve is a rectangular structure.
[0013] By adopting the above technical solution, the water channel is arranged on the inner wall of the roller sleeve, and the three sides are in contact with cooling water, which can increase the cooling effect.
[0014] Furthermore, the roller core is made of steel, and the roller sleeve is made of beryllium copper alloy.
[0015] By adopting the above technical solution, the wear resistance of the roller core and the roller sleeve can be improved, and the service life of the roller core and the roller sleeve can be increased.
[0016] Furthermore, after the roller sleeve is combined and fastened with the roller core and installed as a whole at the corresponding position of the casting and rolling unit, the surface of the roller sleeve needs to be preheated by flame spraying, and during the entire process of aluminum casting and rolling, the roller sleeve needs to be heated by flame spraying to prevent the high-temperature aluminum liquid from adhering to the low-temperature roller sleeve, thereby affecting the surface quality of the cast-rolled aluminum plate.
[0017] Furthermore, the outer surfaces of the roller core and the roller sleeve are coated with a wear-resistant layer.
[0018] By adopting the above technical solution, the wear resistance of the roller core and the roller sleeve can also be improved, and the service life of the roller core and the roller sleeve can be increased.
[0019] In summary, compared with the prior art, the above technical solution has the following beneficial effects:
[0020] (1) By setting the cooling water channel on the inner wall of the roller sleeve, the roller core surface is a smooth integral structure, which is more durable and less prone to thermal fatigue deformation. The roller sleeve is a wearing part and needs to be replaced regularly. When the outer surface that is in direct contact with the high-temperature aluminum liquid reaches its service limit, the water channel on the inner surface will still be in normal operation.
[0021] (2) Only water inlet and outlet holes are left through the roller core, and the surface of the roller core is smooth as a whole. After the roller sleeve and the roller core are assembled and tightly combined, a closed water path can still be formed for the circulation of cooling water in and out. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of an existing casting roll;
[0023] Figure 2 This is a schematic structural diagram of a casting roll according to an embodiment of the utility model;
[0024] Figure 3 This is a cross-sectional view of an embodiment of the utility model highlighting the water channel structure on the casting roller.
[0025] Explanation of the accompanying drawings: 1. roller core; 2. roller sleeve; 3. water channel; 4. water inlet hole; 5. water outlet hole. DETAILED DESCRIPTION
[0026] The following is combined with Figure 2 and 3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.
[0027] The utility model embodiment discloses a casting roller structure for aluminum casting.
[0028] Reference Figure 2 and 3 A cast roll structure for aluminum casting and rolling includes a roll core 1 and a roll sleeve 2 sleeved on the roll core 1, and a water channel 3 is provided on the roll sleeve 2, and the water channel 3 is located between the inner wall of the roll sleeve 2 and the outer wall of the roll core 1. By arranging the water channel 3 for cooling water on the inner wall of the roll sleeve 2, compared with the prior art in which the water channel 3 is provided on the roll core 1, the surface of the roll core 1 is a smooth integral structure, which is more durable and less prone to thermal fatigue deformation; the roll sleeve 2 is a wearing part and needs to be replaced regularly. When the outer surface in direct contact with the high-temperature aluminum liquid reaches the service limit, the water channel 3 on the inner surface will still be in a normal operating state.
[0029] The cross section of the water channel 3 along the axial direction of the roller sleeve 2 is a rectangular structure. Since the water channel 3 is arranged on the inner wall of the roller sleeve 2, three sides of the water channel 3 are in contact with cooling water, which can increase the cooling effect.
[0030] The roller core 1 is provided with a water inlet hole 4 and a water outlet hole 5 which are connected with the water channel 3 at the same time. The roller core 1 only has the water inlet hole 4 and the water outlet hole 5. The surface of the roller core 1 is smooth as a whole. After the roller sleeve 2 and the roller core 1 are assembled and tightly combined, a closed water channel can still be formed for the circulation of cooling water in and out.
[0031] The roller core 1 is made of steel, and the roller sleeve 2 is made of beryllium copper alloy, which can improve the wear resistance of the roller core 1 and the roller sleeve 2 and increase the service life of the roller core 1 and the roller sleeve 2.
[0032] The outer surfaces of the roller core 1 and the roller sleeve 2 are coated with a wear-resistant layer, which can also improve the wear resistance of the roller core 1 and the roller sleeve 2 and increase the service life of the roller core 1 and the roller sleeve 2.
[0033] After the roller sleeve 2 is combined and fastened with the roller core 1 and installed as a whole at the corresponding position of the casting and rolling unit, the surface of the roller sleeve 2 needs to be preheated by flame spraying. In addition, during the entire process of aluminum casting and rolling, the roller sleeve 2 needs to be heated by flame spraying to prevent the high-temperature aluminum liquid from adhering to the low-temperature roller sleeve 2, thereby affecting the surface quality of the cast-rolled aluminum plate.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A casting roll structure for aluminum casting, comprising a roll core (1) and a roll sleeve (2) sleeved on the roll core (1), Features: The roller sleeve (2) is provided with a water channel (3), and the water channel (3) is located between the inner wall of the roller sleeve (2) and the outer wall of the roller core (1).
2. A casting roll structure for aluminum casting according to claim 1, Features: The roller core (1) is provided with a water inlet hole (4) and a water outlet hole (5) which are simultaneously connected to the water channel (3).
3. The casting roll structure for aluminum casting according to claim 1, Features: The cross section of the water channel (3) along the axial direction of the roller sleeve (2) is a rectangular structure.
4. A casting roll structure for aluminum casting according to claim 1, Features: The roller core (1) is made of steel, and the roller sleeve (2) is made of beryllium copper alloy.
5. The casting roll structure for aluminum casting according to claim 1, Features: After the roller sleeve (2) and the roller core (1) are combined and fastened and installed as a whole at the corresponding position of the casting and rolling unit, the surface of the roller sleeve (2) needs to be subjected to a flame spray preheating treatment.
6. A casting roll structure for aluminum casting according to claim 5, Features: During the whole process of aluminum casting and rolling, the roller sleeve (2) needs to be heated by spraying fire.
7. The casting roll structure for aluminum casting according to claim 1, Features: The outer surfaces of the roller core (1) and the roller sleeve (2) are both coated with a wear-resistant layer.