Mould ingot casting cooling device

Abstract

The application provides a crystallizer ingot casting cooling device, and belongs to the field of manufacturing of forging auxiliary equipment; the application comprises: a plurality of cooling modules; each cooling module is in a circular tube shape; an annular heat conduction sleeve is arranged in the inner cavity of the cooling module; a plurality of vertical air inlet pipes and a plurality of vertical air outlet pipes are arranged in the annular heat conduction sleeve, and one air inlet pipe is arranged between two adjacent air outlet pipes; two adjacent cooling modules are stacked in the vertical direction and the air inlet pipes and the air outlet pipes are in butt joint with each other; an annular water channel is arranged outside the annular heat conduction sleeve in each cooling module, and the annular water channel is provided with a water inlet pipe and a water outlet pipe; the plurality of cooling modules comprise: a bottom module, a plurality of middle modules and a top module which are stacked in sequence from bottom to top; a bottom plate is arranged at the bottom of the bottom module; a plurality of communication pipes are arranged at the top of the top module, and the two ends of the communication pipes are respectively connected with an adjacent air outlet pipe and an air inlet pipe. The application realizes cooling and crystallization control of different regions by arranging a plurality of stacked cooling modules, and the quality of crystallization is maximally ensured.

Description

Technical Field

[0001] This invention relates to metallurgical casting manufacturing technology, and more particularly to a crystallizer ingot cooling device, belonging to the field of crystallizer manufacturing technology. Background Technology

[0002] Electroslag remelting is an important special steel smelting process. This is because electroslag remelting can effectively remove large inclusions from metals and improve the uniformity of ingot microstructure.

[0003] Currently, in the field of electroslag remelting, metallurgists mainly focus on the composition of electroslag and the control of parameters such as current and voltage during the electroslag remelting process, while less work is done on the crystallizer. The molten metal after electroslag remelting solidifies in the crystallizer; therefore, the cooling control of the crystallizer largely determines the solidification quality of the ingot. Unlike traditional continuous casting crystallizers, the molten metal after electroslag remelting must not only complete initial solidification in the crystallizer but also complete the entire solidification process. Therefore, the cooling behavior of the electroslag remelting crystallizer simultaneously determines the surface quality and internal microstructure of the solidified ingot.

[0004] To ensure the surface quality of the solidified ingot, a relatively weak cooling mode should be used in the initial solidification zone. However, to improve the solidification quality and uniformity, a strong cooling mode should be used in a region of the ingot after complete solidification. This ensures a gradually increasing temperature gradient from bottom to top, promoting grain growth along the axial direction and reducing segregation and porosity. For the upper clearance area of ​​the crystallizer, which receives extremely strong heat radiation, a strong cooling mode is recommended to extend the crystallizer's lifespan and prevent overheating. Therefore, to further improve the solidification quality of the ingot and the lifespan of the crystallizer, different cooling modes should be used in different regions of the electroslag remelting crystallizer.

[0005] However, during the electroslag remelting process, as the smelting time continues to extend, the positions of the molten metal pool and the slag pool rise continuously. This means that the cooling modes at different positions of the electroslag remelting crystallizer must change continuously as the positions of the molten metal pool and the slag pool rise, thus requiring a new crystallizer cooling device. Summary of the Invention

[0006] This invention provides a novel ingot cooling device for crystallizers. By setting up multiple cooling modules, it is possible to achieve precise temperature control in different areas, thereby solving the technical problem of difficulty in accurately controlling the crystallization temperature in the prior art.

[0007] The crystallizer ingot cooling device of this invention includes: multiple cooling modules; each cooling module is a circular tube structure; an annular heat-conducting sleeve is provided in the inner cavity of the cooling module; multiple vertical air inlet pipes and multiple vertical exhaust pipes are provided in the annular heat-conducting sleeve, and an air inlet pipe is provided between two adjacent exhaust pipes; two adjacent cooling modules are stacked on top of each other in the vertical direction, and the air inlet pipes and the exhaust pipes are respectively connected to each other;

[0008] In each of the cooling modules, an annular water channel is provided on the outer side of the annular heat-conducting sleeve, and the annular water channel has an inlet pipe and a drain pipe.

[0009] The multiple cooling modules include: a bottom module, multiple middle modules and a top module stacked sequentially from bottom to top; the bottom of the bottom module is provided with a base plate; the top of the top module is provided with multiple connecting pipes, the two ends of which are respectively connected to an adjacent exhaust pipe and an intake pipe.

[0010] In the crystallizer ingot cooling device described above, each of the annular water channels is provided with a baffle that separates the annular water channel; the water inlet pipe and the water outlet pipe are respectively located on both sides of the baffle.

[0011] In the crystallizer ingot cooling equipment described above, in each of the cooling modules, the top of the air inlet pipe and the exhaust pipe are provided with a connecting sleeve; the bottom of the air inlet pipe and the exhaust pipe are provided with a tapered plug.

[0012] The two adjacent cooling modules are stacked on top of each other so that the tapered plug on the upper cooling module is inserted into the mating sleeve of the lower cooling module.

[0013] The crystallizer ingot cooling device described above further includes a Roots blower; the Roots blower has an air outlet connected to multiple air inlet pipes.

[0014] In the crystallizer ingot cooling equipment described above, a temperature difference sensor is provided between the water inlet pipe and the drain pipe in each cooling module; the temperature difference sensor has two temperature probes, which are respectively connected to the water inlet pipe and the drain pipe.

[0015] In the crystallizer ingot cooling equipment described above, both the inlet pipe and the outlet pipe are equipped with one-way valves.

[0016] The crystallizer ingot cooling equipment described above, wherein each of the cooling modules further includes: a circulating pump, a cooling water tank, and a drain tank; the drain pipe is connected to the drain tank; and the cooling water tank is connected to the inlet pipe via the circulating pump.

[0017] In the crystallizer ingot cooling device described above, the annular heat-conducting sleeve is a metal sleeve.

[0018] In the crystallizer ingot cooling equipment described above, both the water inlet pipe and the drain pipe are equipped with connecting plugs.

[0019] In this embodiment of the invention, by setting up multiple stacked cooling modules, cooling and crystallization control in different regions is achieved, thereby maximizing the quality of crystallization. Attached Figure Description

[0020] Figure 1 This is a side view of the crystallizer ingot cooling device according to an embodiment of the present invention;

[0021] Figure 2 This is a top view of the crystallizer ingot cooling device according to an embodiment of the present invention. Detailed Implementation

[0022] The crystallizer ingot cooling equipment described in this invention can be made of the following materials and components, but is not limited to them, such as: cooling water pipes, annular water channels, air inlet pipes, exhaust pipes, connecting pipes, interfaces, check valves, etc.

[0023] like Figure 1 The diagram shown is a side view of the crystallizer ingot cooling device according to an embodiment of the present invention; combined with Figure 2 .

[0024] The crystallizer ingot cooling device of this invention includes: multiple cooling modules 1; each cooling module 1 is a circular tube structure; the inner cavity of the cooling module is provided with an annular heat-conducting sleeve 10; the annular heat-conducting sleeve 10 is provided with multiple vertical air inlet pipes 31 and multiple vertical exhaust pipes 32, and there is an air inlet pipe 31 between two adjacent exhaust pipes 32; the air inlet pipes 31 and exhaust pipes 32 are arranged at intervals.

[0025] Two adjacent cooling modules 1 are stacked vertically on top of each other, and the air intake pipe 31 and the exhaust pipe 21 are respectively connected to each other; thus, the interconnection of the air intake pipe 31 and the exhaust pipe 32 can be used to cool down multiple cooling modules as a whole.

[0026] In each of the cooling modules 1, an annular water channel 2 is provided on the outer side of the annular heat-conducting sleeve 10. The annular water channel 2 has an inlet pipe 21 and a drain pipe 22. The inlet pipe 21 and the drain pipe 22 respectively input and discharge circulating water to achieve rapid cooling of a single cooling module.

[0027] The annular water channel 2 is located on the outside of the annular heat-conducting sleeve 10, which not only avoids excessive instantaneous heat load on the water circulation pipeline due to high temperature, but also effectively protects the annular water channel 2 in the early stage of crystallization.

[0028] Normally, each of the annular waterways 2 is provided with a partition 20 that separates the annular waterway; the inlet pipe 21 and the outlet pipe 22 are located on both sides of the partition 20.

[0029] The baffle 20 enables the circulating water in the entire annular waterway 2 to flow in one direction.

[0030] The multiple cooling modules 1 include: a bottom module 16, multiple intermediate modules 17 and a top module 18 stacked sequentially from bottom to top; the bottom of the bottom module 16 is provided with a base plate 11; the top of the top module 18 is provided with multiple connecting pipes 30, the two ends of which are respectively connected to an adjacent exhaust pipe and an intake pipe.

[0031] Each set of interconnected intake pipes 31, connecting pipes 30, and exhaust pipes 32 constitutes an air-cooling circuit 3, which is used to dissipate heat from the entire annular heat-conducting jacket 10.

[0032] In this embodiment of the invention, by setting up multiple stacked cooling modules, cooling and crystallization control in different regions is achieved, thereby maximizing the quality of crystallization.

[0033] In this embodiment, in each cooling module 1, the top of the air inlet pipe 31 and the exhaust pipe 32 are provided with a docking sleeve 34; the bottom of the air inlet pipe 31 and the exhaust pipe 32 are provided with a conical plug 33; the docking sleeve 34 is used to connect and seal with the conical plug 33 thereon.

[0034] The two adjacent cooling modules 1 are stacked on top of each other so that the tapered plug 33 on the upper cooling module 1 is inserted into the mating sleeve 34 of the lower cooling module.

[0035] Furthermore, the ingot cooling equipment for the crystallizer in this embodiment also includes a Roots blower; the Roots blower has an air outlet, which is connected to a plurality of air inlet pipes 31. The hot air discharged from the exhaust pipe 32 is released directly through the pipeline.

[0036] Preferably, in each cooling module 1, a temperature difference sensor 4 is provided between the water inlet pipe 21 and the drain pipe 22; the temperature difference sensor has two temperature probes, which are respectively connected to the water inlet pipe 21 and the drain pipe 22. The temperature difference sensor 4 can measure the temperature difference between the water inlet pipe 21 and the drain pipe 22, thereby facilitating the calculation of the water inlet flow rate input into the cooling module, and thus adjusting the temperature and flow rate of the water in a timely manner according to the needs of crystallization, thereby achieving directional temperature control.

[0037] In the crystallizer ingot cooling equipment of this embodiment, both the water inlet pipe 21 and the drain pipe 22 are equipped with one-way valves 5 to prevent backflow of circulating water.

[0038] The ingot cooling device for the crystallizer in this embodiment further includes a cooling module comprising: a circulating pump, a cooling water tank, and a drain tank; the drain pipe 22 is connected to the drain tank; and the cooling water tank is connected to the inlet pipe 21 via the circulating pump.

[0039] Furthermore, both the inlet pipe 21 and the outlet pipe 22 are equipped with a connector 23 to facilitate connection with external circulation pipes.

[0040] In the crystallizer ingot cooling device of this embodiment, the annular heat-conducting sleeve 10 is a metal sleeve.

[0041] In addition, the crystallizer ingot cooling equipment of the present invention has low manufacturing cost, is a modular device, can precisely adjust the temperature of specific areas of the crystallizer, has stable finished product quality, is easy to maintain and operate, and is suitable for various modified crystallizer cooling devices.

[0042] The sequence numbers of the above embodiments of the present invention are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of some modifications and the superposition of necessary general technologies; of course, they can also be implemented by simplifying some important technical features. Based on this understanding, the technical solution of the present invention, in essence or the part that contributes to the prior art, is: the overall structure and connection method, and the structure described in the various embodiments of the present invention.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crystallizer ingot cooling apparatus characterized by, include: Multiple cooling modules; each cooling module has a cylindrical tube structure; the inner cavity of each cooling module is provided with an annular heat-conducting sleeve; the annular heat-conducting sleeve is provided with multiple vertical air inlet pipes and multiple vertical exhaust pipes, with an air inlet pipe between two adjacent exhaust pipes; two adjacent cooling modules are stacked on top of each other in the vertical direction, and the air inlet pipes and the exhaust pipes are respectively connected to each other; In each of the cooling modules, an annular water channel is provided on the outer side of the annular heat-conducting sleeve, and the annular water channel has an inlet pipe and a drain pipe. The plurality of cooling modules include: a bottom module, a plurality of middle modules and a top module stacked on top of each other from bottom to top; The bottom module has a base plate at its bottom; the top module has multiple connecting pipes at its top, with each end of the connecting pipe connected to an adjacent exhaust pipe and an intake pipe, respectively. In each of the cooling modules, the top of the air inlet pipe and the exhaust pipe are provided with a mating sleeve; the bottom of the air inlet pipe and the exhaust pipe are provided with a tapered plug. The two adjacent cooling modules are stacked on top of each other so that the tapered plug on the upper cooling module is inserted into the mating sleeve of the lower cooling module.

2. The crystallizer ingot cooling apparatus according to claim 1, characterized by, Each of the aforementioned annular waterways is provided with a partition that separates the annular waterway; the inlet pipe and the outlet pipe are respectively located on both sides of the partition.

3. The crystallizer ingot cooling apparatus according to claim 1, characterized by, The crystallizer ingot cooling equipment also includes: a Roots blower; the Roots blower has an air outlet, which is connected to multiple air inlet pipes.

4. The crystallizer ingot cooling apparatus according to claim 3, characterized by, In each of the cooling modules, a temperature difference sensor is installed between the water inlet pipe and the water outlet pipe; the temperature difference sensor has two temperature probes, which are respectively connected to the water inlet pipe and the water outlet pipe.

5. The crystallizer ingot cooling apparatus according to claim 1, characterized by, Both the inlet pipe and the outlet pipe are equipped with one-way valves.

6. The crystallizer ingot cooling apparatus according to claim 1, characterized by, Each cooling module further includes: a circulation pump, a cooling water tank, and a drain tank; the drain pipe is connected to the drain tank; the cooling water tank is connected to the inlet pipe via the circulation pump.

7. The crystallizer ingot cooling apparatus according to claim 1, characterized by, The annular heat-conducting sleeve is a metal sleeve.

8. The crystallizer ingot cooling apparatus according to claim 6, characterized by, Both the inlet pipe and the outlet pipe are equipped with connector plugs.

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