Rapid-hardening cooling device and method for preparing SC rapid-hardening tablets

Abstract

The invention provides a rapid hardening cooling device and method for preparing SC rapid hardening tablets. The rapid hardening cooling device comprises a furnace body, a casting module and a material receiving module, wherein the casting module and the material receiving module are contained in the furnace body. The material receiving module is used for collecting and cooling the received SC rapid hardening sheets. The material receiving module comprises a water cooling disc and a bearing disc suspended in the water cooling disc, the bearing disc is used for bearing the SC rapid hardening sheet, and the bearing disc is provided with a hollow structure penetrating through the bearing disc. According to the rapid-hardening cooling device for preparing the SC rapid-hardening sheet, the SC rapid-hardening sheet is borne by suspending the bearing disc with the hollow structure on the water-cooling disc, and the bottom surface of the bearing disc is separated from the bottom surface of the water-cooling disc; the influence of accumulation of the SC rapid hardening sheets on the bottom surface of the water cooling disc on the cooling effect is avoided, meanwhile, the flowing speed of a cooling medium is increased, and the cooling efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal materials, and in particular to a quick-setting cooling device and method for preparing SC quick-setting sheets. Background Art

[0002] SC quick-setting sheet, namely Strip Casting quick-setting sheet, is a metal or alloy sheet prepared by quick-setting cooling technology. This technology is mainly used to prepare materials with special properties, such as rare earth magnetostrictive materials and NdFeB permanent magnet materials. During the preparation of SC quick-setting sheet, the molten metal or alloy is rapidly cooled on a high-speed rotating copper roller to form a thin sheet with fine grains and unique microstructure. These characteristics make it perform well in magnetic properties and other physical properties and are widely used in magnetic materials, aerospace, electronics industry and automobile industry. SC quick-setting sheet is prepared by quick-setting cooling technology using a quick-setting cooling device. The quick-setting cooling device generally includes structures such as copper rollers, tundishes, and water cooling plates; the preparation process includes the steps of: pouring the molten steel into the tundish, and then taking it out by the copper roller to form a quick-setting sheet, and then introducing argon gas into the quick-setting sheet during the copper roller and the falling collection process to achieve the purpose of rapid cooling. However, when the melting equivalent is large and the casting process lasts for a long time, more quick-setting sheets are accumulated on the water cooling plate, resulting in poor heat dissipation and greatly reduced cooling effect. Therefore, it is very necessary to provide a quick-setting cooling device and method that can improve the cooling effect of quick-setting sheets and enhance the cooling efficiency of products. Summary of the invention

[0003] The object of the present invention is to provide a quick-setting cooling device and a quick-setting cooling method for preparing SC quick-setting sheets, wherein the quick-setting cooling device can improve the heat dissipation effect and increase the cooling rate of the SC quick-setting sheets.

[0004] The technical solution of the present invention is as follows:

[0005] In the first aspect, the present invention provides a quick-setting cooling device for preparing SC quick-setting sheets, which includes a furnace body and a casting module and a receiving module accommodated in the furnace body, the receiving module is arranged at the unloading end of the casting module, the casting module is used to form SC quick-setting sheets and transfer the SC quick-setting sheets to the receiving module, the receiving module is used to collect and cool the received SC quick-setting sheets; the receiving module includes a water-cooled plate and a receiving plate suspended in the water-cooled plate, the receiving plate is used to carry the SC quick-setting sheets, and the receiving plate is provided with a hollow structure running through it.

[0006] Optionally, the receiving plate is coaxially arranged with the water cooling plate, the receiving plate is arranged parallel to the bottom surface of the water cooling plate, a gap is provided between the receiving plate and the side wall of the water cooling plate, and the receiving plate is connected to the water cooling plate through a movable connection mechanism; the movable connection mechanism includes a rotating driving member arranged along the central axis of the water cooling plate, the rotating end of the rotating driving member is arranged toward the receiving plate, and the receiving plate is connected to the rotating end of the rotating driving member.

[0007] Optionally, the receiving plate is connected to the rotating end of the rotating drive member through a limiting assembly; the limiting assembly includes a limiting groove provided at the rotating end of the rotating drive member and a limiting protrusion provided on the receiving plate, and the limiting protrusion is cooperatively connected in the limiting groove; the cross-section of the limiting protrusion is polygonal.

[0008] Optionally, the receiving plate is made of heat-resistant metal wires, and the hollow structure is a pore structure formed by the heat-resistant metal wires.

[0009] Optionally, an air intake pipe is provided on the bottom of the furnace body in an area corresponding to the central axis of the water cooling plate, and an air inlet connected to the air intake pipe is opened on the water cooling plate; the air intake pipe is used to transport argon gas.

[0010] Optionally, the casting module includes a melting crucible, a tundish and a cooling roller connected in sequence, the melting crucible is used to heat and melt the raw material to obtain a molten raw material, the tundish is used to receive the molten raw material and cast it on the cooling roller, and the cooling roller is used to quickly cool and solidify the molten raw material to obtain the SC quick-setting sheet; the material receiving module is arranged below the cooling roller.

[0011] Optionally, the cooling roller is arranged above the water-cooling plate, and the blanking end of the cooling roller is projected on the receiving plate in the vertical direction.

[0012] Optionally, the material receiving module also includes a guide shovel arranged between the cooling roller and the water-cooling plate, the guide shovel is inclined relative to the plane of the receiving plate, and the inclination angle of the guide shovel gradually increases from the central axis of the receiving plate to the side area of ​​the water-cooling plate.

[0013] In the second aspect, the present invention provides a rapid setting and cooling method for preparing SC quick-setting sheets, and the preparation method is implemented using the rapid setting and cooling device as described above; the rapid setting and cooling device includes a furnace body and a casting module and a receiving module accommodated in the furnace body, the receiving module is arranged at the unloading end of the casting module, the casting module is used to form SC quick-setting sheets and transfer the SC quick-setting sheets to the receiving module, and the receiving module is used to collect and cool the received SC quick-setting sheets; the receiving module includes a water-cooled plate and a receiving plate suspended in the water-cooled plate, the receiving plate is used to carry the SC quick-setting sheets, and the receiving plate is provided with a hollow structure running through it.

[0014] Optionally, the rapid solidification cooling method includes the steps of: using a melting crucible to pour the molten raw material into a tundish; using the tundish to cast the molten raw material onto a cooling roller, and forming the SC rapid solidification sheet under the action of the cooling roller; rotating the cooling roller so that the SC rapid solidification sheet falls onto the guide shovel and is distributed on the receiving plate; and introducing argon gas into the SC rapid solidification sheet during the cooling roller and the falling process.

[0015] The beneficial effects of the present invention are as follows: the quick-setting cooling device for preparing SC quick-setting sheets described in the present invention includes the material receiving module, and the SC quick-setting sheets are carried by suspending a receiving plate with a hollow structure on the water-cooled plate. The receiving plate and the bottom surface of the water-cooled plate are separated from each other, thereby avoiding the influence of the accumulation of SC quick-setting sheets on the bottom surface of the water-cooled plate on the cooling effect, while improving the flow rate of the cooling medium and the cooling efficiency; in addition, the setting of the hollow structure ensures that the receiving plate plays a receiving role for the SC quick-setting sheets while allowing the cooling medium to pass through the hollow structure and directly act on the SC quick-setting sheets, thereby further improving the cooling efficiency of the SC quick-setting sheet products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the rapid solidification cooling device of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the casting module of the present invention.

[0018] Figure 3 It is a cross-sectional schematic diagram of the receiving tray of the present invention.

[0019] Among them, 1-furnace body, 2-casting module, 21-smelting crucible, 22-tundish, 23-cooling roller, 3-collecting module, 31-water cooling plate, 311-air inlet, 32-receiving plate, 321-hollow structure, 322-limiting protrusion, 33-gap, 34-active connection mechanism, 341-rotating drive part, 342-limiting groove, 35-limiting assembly, 36-guide shovel, 4-air inlet pipe. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0021] In a first aspect, the present invention provides a rapid setting cooling device for preparing SC rapid setting sheets, see Figure 1 and Figure 2 As shown, it includes a furnace body 1 and a casting module 2 and a receiving module 3 accommodated in the furnace body 1, the receiving module 3 is arranged at the unloading end of the casting module 2, the casting module 2 is used to form SC quick-setting sheets and transfer the SC quick-setting sheets to the receiving module 3, the receiving module 3 is used to collect and cool the received SC quick-setting sheets; the receiving module 3 includes a water-cooled plate 31 and a receiving plate 32 suspended in the water-cooled plate 31, the receiving plate 32 is used to carry the SC quick-setting sheets, and the receiving plate 32 is provided with a hollow structure 321 running through it.

[0022] The quick-setting cooling device for preparing SC quick-setting sheets described in the present invention includes the material receiving module 3, which supports the SC quick-setting sheets by suspending a receiving plate 32 with a hollow structure 321 on the water-cooled plate 31. The receiving plate 32 and the bottom surface of the water-cooled plate 31 are separated from each other, thereby avoiding the influence of the accumulation of SC quick-setting sheets on the bottom surface of the water-cooled plate 31 on the cooling effect, while improving the flow rate of the cooling medium and the cooling efficiency. In addition, the setting of the hollow structure 321 ensures that the receiving plate 32 plays a receiving role for the SC quick-setting sheets while allowing the cooling medium to pass through the hollow structure 321 and directly act on the SC quick-setting sheets, thereby further improving the cooling efficiency of the SC quick-setting sheet products.

[0023] The receiving plate 32 is coaxially arranged with the water cooling plate 31, and the receiving plate 32 is arranged parallel to the bottom surface of the water cooling plate 31. A gap 33 is provided between the receiving plate 32 and the side wall of the water cooling plate 31, and the receiving plate 32 is connected to the water cooling plate 31 through a movable connection mechanism 34; the movable connection mechanism 34 includes a rotating driving member 341 arranged along the central axis of the water cooling plate 31, and the rotating end of the rotating driving member 341 is arranged toward the receiving plate 32, and the receiving plate 32 is connected to the rotating end of the rotating driving member 341.

[0024] When the receiving plate 32 is detachably connected to the rotating driving member 341, see Figure 2As shown, the receiving plate 32 is connected to the rotating end of the rotating drive member 341 through a limiting assembly 35; the limiting assembly 35 includes a limiting groove 342 provided at the rotating end of the rotating drive member 341 and a limiting protrusion 322 provided on the receiving plate 32, and the limiting protrusion 322 is cooperatively connected in the limiting groove 342; the cross-section of the limiting protrusion 322 is polygonal.

[0025] In some embodiments, see Figure 3 As shown, the receiving tray 32 is woven from heat-resistant metal wires, and the hollow structure 321 is a pore structure formed by weaving the heat-resistant metal wires. The receiving tray 32 in the present invention is woven from the heat-resistant metal wires, with a close-packed hexagonal structure and / or a face-centered cubic structure, so that the heat-resistant metal wires have a higher atomic packing density and a shorter interatomic distance, which enables the receiving tray 32 to maintain good mechanical properties and stability at high temperatures, ensuring that during the cooling of the SC quick-setting sheet, the receiving tray 32 has good structural stability when it contacts the SC quick-setting sheet at a higher temperature. In other embodiments, the receiving tray 32 is made of a heat-resistant metal plate with a close-packed structure, and the hollow structure 321 is an open hole structure provided on the receiving tray 32.

[0026] An air intake pipe 4 is provided at the bottom of the furnace body 1 in an area corresponding to the central axis of the water cooling plate 31, and an air intake port 311 connected to the air intake pipe 4 is provided on the water cooling plate 31; the air intake pipe 4 is used to transport Ar (argon). When in use, Ar is directly introduced into the water cooling plate 31 area via the air intake port 311 through the air intake pipe 4 to cool the SC quick-setting sheet. The optimization of the structure of the device improves the efficiency of introducing Ar, thereby improving the cooling efficiency of the SC quick-setting sheet. It can be understood that the air intake port is connected to an Ar delivery device.

[0027] The casting module 2 includes a melting crucible 21, a tundish 22 and a cooling roller 23 which are connected in sequence. The melting crucible 21 is used to heat and melt the raw material to obtain a molten raw material. The tundish 22 is used to receive the molten raw material and cast it on the cooling roller 23. The cooling roller 23 is used to quickly cool and solidify the molten raw material to obtain the SC quick-setting sheet. The receiving module 3 is arranged below the cooling roller 23.

[0028] The cooling roller 23 is disposed above the water cooling plate 31, and the blanking end of the cooling roller 23 is projected vertically to the receiving plate 32. Optionally, the blanking end of the cooling roller 23 is projected vertically to the center area of ​​the receiving plate 32, so that the material falling from the cooling roller 23 can be arranged close to the center area of ​​the receiving plate 32.

[0029] The receiving module 3 also includes a guide shovel 36 disposed between the cooling roller 23 and the water-cooling plate 31. The guide shovel 36 is inclined relative to the plane of the receiving plate 32, and the inclination angle of the guide shovel 36 gradually increases from the central axis of the receiving plate 32 to the side area of ​​the water-cooling plate 31. The setting of the guide shovel 36 plays a role in connecting and distributing the SC quick-setting sheets after they fall from the cooling roller 23, and acts as a buffer for the SC quick-setting sheets while avoiding the concentrated accumulation of the SC quick-setting sheets. The cooling roller 23 is a metal copper roller.

[0030] In the second aspect, the present invention provides a rapid solidification and cooling method for preparing SC quick-setting sheets, and the preparation method is implemented using the rapid solidification and cooling device as described above; the rapid solidification and cooling device includes a furnace body 1 and a casting module 2 and a receiving module 3 accommodated in the furnace body 1, the receiving module 3 is arranged at the unloading end of the casting module 2, the casting module 2 is used to form SC quick-setting sheets and transfer the SC quick-setting sheets to the receiving module 3, the receiving module is used to collect and cool the received SC quick-setting sheets; the receiving module 3 includes a water-cooled plate 31 and a receiving plate 32 suspended in the water-cooled plate 31, the receiving plate 32 is used to carry the SC quick-setting sheets, and the receiving plate 32 is provided with a hollow structure 321 running through it.

[0031] Optionally, the rapid solidification cooling method comprises the steps of: using a melting crucible 21 to pour the molten raw material into a tundish 22; using the tundish 22 to cast the molten raw material onto a cooling roller 23, and forming a SC rapid solidification sheet under the action of the cooling roller 23; rotating the cooling roller 23 so that the SC rapid solidification sheet falls onto the guide shovel 36 and is then distributed on the receiving plate 32; and introducing argon gas into the SC rapid solidification sheet on the cooling roller 23 and during the falling process.

[0032] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A rapid setting cooling device for preparing SC rapid setting sheets, characterized in that: It includes a furnace body and a casting module and a receiving module accommodated in the furnace body. The receiving module is arranged at the unloading end of the casting module. The casting module is used to form SC quick-setting sheets and transfer the SC quick-setting sheets to the receiving module. The receiving module is used to collect and cool the received SC quick-setting sheets. The receiving module includes a water-cooling plate and a receiving plate suspended in the water-cooling plate. The receiving plate is used to carry the SC quick-setting sheets. The receiving plate is provided with a hollow structure running through it.

2. The rapid solidification cooling device according to claim 1, characterized in that: The receiving plate is coaxially arranged with the water-cooling plate, and the receiving plate is arranged parallel to the bottom surface of the water-cooling plate. A gap is provided between the receiving plate and the side wall of the water-cooling plate, and the receiving plate is connected to the water-cooling plate through a movable connection mechanism; the movable connection mechanism includes a rotating driving member arranged along the central axis of the water-cooling plate, the rotating end of the rotating driving member is arranged toward the receiving plate, and the receiving plate is connected to the rotating end of the rotating driving member.

3. The rapid solidification cooling device according to claim 2, characterized in that: The receiving plate is connected to the rotating end of the rotating drive member through a limiting assembly; the limiting assembly includes a limiting groove provided at the rotating end of the rotating drive member and a limiting protrusion provided on the receiving plate, and the limiting protrusion is cooperatively connected in the limiting groove; the cross-section of the limiting protrusion is polygonal.

4. The rapid solidification cooling device according to claim 1, characterized in that: The receiving plate is made of heat-resistant metal wires, and the hollow structure is a pore structure formed by the heat-resistant metal wires.

5. The rapid solidification cooling device according to claim 1, characterized in that: An air intake pipe is provided on the bottom of the furnace body in an area corresponding to the central axis of the water cooling plate, and an air inlet connected to the air intake pipe is opened on the water cooling plate; the air intake pipe is used to transport argon gas.

6. The rapid solidification cooling device according to claim 1, characterized in that: The casting module includes a smelting crucible, a tundish and a cooling roller connected in sequence, the smelting crucible is used to heat and melt the raw material to obtain a molten raw material, the tundish is used to receive the molten raw material and cast it on the cooling roller, and the cooling roller is used to quickly cool and solidify the molten raw material to obtain the SC quick-setting sheet; the material receiving module is arranged below the cooling roller.

7. The rapid solidification cooling device according to claim 6, characterized in that: The cooling roller is arranged above the water cooling plate, and the blanking end of the cooling roller is projected on the receiving plate along the vertical direction.

8. The rapid solidification cooling device according to claim 1, characterized in that: The receiving module also includes a guide shovel arranged between the cooling roller and the water-cooling plate. The guide shovel is inclined relative to the plane of the receiving plate, and the inclination angle of the guide shovel gradually increases from the central axis of the receiving plate to the side area of ​​the water-cooling plate.

9. A rapid setting cooling method for preparing SC rapid setting sheets, characterized in that: The preparation method is implemented by using the rapid setting cooling device as described in any one of claims 1 to 8; the rapid setting cooling device includes a furnace body and a casting module and a receiving module accommodated in the furnace body, the receiving module is arranged at the unloading end of the casting module, the casting module is used to form SC rapid setting sheets and transfer the SC rapid setting sheets to the receiving module, the receiving module is used to collect and cool the received SC rapid setting sheets; the receiving module includes a water-cooled plate and a receiving plate suspended in the water-cooled plate, the receiving plate is used to carry the SC rapid setting sheets, and the receiving plate is provided with a hollow structure running through it.

10. The rapid solidification cooling method according to claim 9, characterized in that: The method comprises the following steps: using a smelting crucible to pour the molten raw material into a tundish; using the tundish to cast the molten raw material onto a cooling roller, and forming the SC quick-setting sheet under the action of the cooling roller; the cooling roller rotates so that the SC quick-setting sheet falls onto the guide shovel and is then distributed on the receiving plate; and argon gas is introduced into the SC quick-setting sheet during the cooling roller and the falling process.

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