Manufacturing method of high-pulling-speed crystallizer cooled by flow guide water holes

Abstract

The invention discloses a manufacturing method of a high-pulling-speed crystallizer cooled by flow guide water holes, and relates to the field of metal casting equipment.The high-pulling-speed crystallizer comprises a main body assembly, the flow guide water holes are embedded in the inner wall of the main body assembly in a parallel array mode, and a cooling water system is connected between the upper end and the lower end of the main body assembly in an enclasping mode; by means of the embedded flow guide water holes and the cooling water system in the assembling process, machining, assembling and production are facilitated, the manufacturing and maintenance cost is greatly saved, whether the flow guide water holes are blocked or not can be conveniently overhauled after disassembly, overhauling and dredging are facilitated, and the service life is prolonged. When the water flow passes through the flow guide water holes, due to the fact that the diameters of the flow guide water holes are small, the strong turbulence effect can be generated, the heat exchange coefficient is increased, heat is rapidly transmitted to cooling water, the cooling effect is improved, the flow guide water holes are densely distributed and reasonably designed, the local overheating phenomenon is avoided, and the cooling uniformity is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of metal casting equipment, in particular to a method for manufacturing a high-drawing speed crystallizer cooled by a guide water hole. Background Art

[0002] With the development of the steel industry, continuous casting has become one of the important processes for producing high-quality steel. In this process, the crystallizer is a key equipment, and its performance directly affects the quality and output of the final product. Traditional crystallizers mostly use a water-cooled copper plate structure, which removes heat through circulating water flow to achieve rapid solidification of molten steel.

[0003] However, under high-speed conditions, the cooling efficiency of traditional crystallizers is difficult to meet the demand, resulting in unstable product quality and even cracks. In recent years, in order to improve the cooling efficiency, researchers have developed a variety of new crystallizer designs, such as microchannel cooling and electromagnetic stirring. Although the above cooling schemes have their own advantages, they still face many challenges in practical applications.

[0004] First, although microchannel cooling improves cooling efficiency, the production and maintenance costs remain high due to the extremely high manufacturing precision requirements. Secondly, although electromagnetic stirring can effectively reduce center segregation, the equipment is highly complex and the operating costs are expensive. Therefore, how to reduce manufacturing and maintenance costs while maintaining efficient cooling has become a problem that needs to be solved urgently. These technologies have improved the cooling effect to a certain extent, but there are still some shortcomings. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the problems mentioned in the background technology, a method for manufacturing a high-drawing speed crystallizer with diversion water hole cooling is proposed.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a method for manufacturing a high-drawing speed crystallizer with diversion water hole cooling, the high-drawing speed crystallizer includes a main body component, the inner wall of the main body component is embedded with diversion water holes in a parallel array, and a cooling water system is tightly connected between the upper end and the lower end of the main body component, the cooling water system is connected to the diversion water holes, and a filter ring is installed at the water inlet position where the cooling water system is connected to the diversion water holes, the filter ring is made of high-temperature resistant sponge, and external cooling water is supplied to the interior of the diversion water holes through the cooling water system, the interior of the main body component is cooled through the diversion water holes, and the cooling water after absorbing heat is discharged through the cooling water system, and when supplying water, the cooling water is filtered through the filter ring to reduce the risk of clogging of the diversion water holes.

[0007] Preferably, the main body component includes a shell, the wall thickness of the shell is 10 mm, and the shell is made of high-temperature resistant stainless steel. The interior of the shell is provided with embedded grooves arranged in parallel, the diversion water holes are embedded in the embedded grooves, and the upper and lower ends of the shell are provided with connecting grooves, the cooling water system is tightly embraced in the connecting grooves at the upper and lower ends, a first water channel is provided on the inner side of the connecting groove, a through hole is provided on one side of the first water channel, and the through hole is connected with the embedded groove, through the first water channel, it is convenient to supply cooling water to the cooling water system, and evenly supply it to the interior of the diversion water hole, and through the embedded groove, it is convenient to assemble the diversion water hole, after assembly, the diversion water hole is connected with the first water channel, and through the connecting groove, it is convenient to assemble the cooling water system, convenient to supply cooling water and discharge hot water after absorbing heat.

[0008] Preferably, both ends of the shell are provided with clamping grooves, the end of the cooling water system is clamped on the clamping groove, and the filter ring is sleeved inside the first water channel, the end of the diversion water hole extends to the inside of the first water channel through the through hole, and a positioning hole is provided on one side of the clamping groove, one end of the cooling water system is inserted into the inside of the positioning hole, and the stability of the connection between the cooling water system and the shell is improved through the clamping groove and the positioning hole.

[0009] Preferably, the embedding groove, the connecting groove, the clamping groove and the first water channel on the shell are all formed by turning on a lathe, and the through hole and the positioning hole are formed by drilling on a drilling machine. Processing by turning can reduce production costs, facilitate assembly, and facilitate production.

[0010] Preferably, the diversion water hole includes a cooling pipe, the cooling pipe is made of copper alloy, the inner diameter of the cooling pipe is 0.5mm, the cooling pipe is distributed at a spacing of 1mm in the shell, the uniformity of cooling the inside of the shell is improved, and the ends of the cooling pipe are bent to form a terminal, the diversion water hole is a U-shaped structure as a whole, and the terminal extends to the inside of the first water channel through the through hole, the terminal is consistent with the through hole, and after connection, it is sealed, and the cooling pipe is coated with a graphene coating. Graphene has extremely high thermal conductivity and excellent chemical stability, which can significantly improve the heat conduction efficiency without affecting the circulation of cooling water. It can not only accelerate heat transfer, but also reduce the corrosion risk of the diversion water hole and extend the service life. Compared with the case where the graphene coating is not coated, the temperature drop of this solution under the same cooling conditions can be increased by more than 10%, and the maintenance frequency is also greatly reduced.

[0011] Preferably, the cooling water system includes an upper connecting seat and a lower connecting seat, the upper connecting seat and the lower connecting seat are made of carbon steel or stainless steel, and the upper connecting seat is clamped in the connecting groove at the upper end of the shell, and the lower connecting seat is clamped in the connecting groove at the lower end of the shell, and the upper connecting seat and the lower connecting seat are tightened, and a positioning rod is evenly fixed on one side of the upper connecting seat and the lower connecting seat, and the positioning rod is inserted into the inside of the positioning hole. Through the upper connecting seat and the lower connecting seat, it is convenient to assemble on the shell, and a sealed water cooling circuit is formed between the cooling water system and the diversion water hole.

[0012] Preferably, one side of the inner part of the upper connecting seat and the lower connecting seat is turned to form a clamping ring, and the clamping ring is clamped inside the clamping groove, and after clamping, the connection position is sealed to improve the connection sealing effect after assembly.

[0013] Preferably, the interior of the upper connecting seat and the lower connecting seat are both turned to form a second water channel, and the second water channel corresponds to the first water channel, a water inlet pipe is fixedly installed on one side of the second water channel on the upper connecting seat, a filter is installed at the middle position of the water inlet pipe, and a water outlet pipe is fixedly installed on one side of the second water channel on the lower connecting seat, so as to facilitate water supply and discharge of hot water to the interior of the diversion water hole, and through the filter, impurities in the water are prevented from entering the interior of the diversion water hole, thereby reducing the risk of blockage.

[0014] Preferably, connecting ears are fixedly installed on the outer sides of the upper connecting seat and the lower connecting seat in a circumferential array, and a pull rod with a threaded end is inserted between the connecting ears on the upper connecting seat and the lower connecting seat, and a clamping nut is threadedly connected to the end of the pull rod, and the clamping nut is pressed against the connecting ear. Through the pull rod and the clamping nut, the upper connecting seat and the lower connecting seat can be tightened and then clamped to the two ends of the shell to facilitate assembly.

[0015] In summary, the beneficial effects of the present invention are as follows: 1. The built-in water guide holes and the cooling water system during assembly make it easy to process and assemble, and convenient for production, which greatly saves manufacturing and maintenance costs.

[0016] 2. Through the embedded water diversion holes with a small diameter, the water flow will produce a strong turbulence effect when passing through, which enhances the heat transfer coefficient, allowing the heat to be quickly transferred to the cooling water and improving the cooling effect.

[0017] 3. The cooling water has a longer flow path in the diversion water holes, which increases the heat exchange time and further improves the cooling effect. At the same time, due to the fine distribution and reasonable design of the diversion water holes, local overheating is avoided and the uniformity of cooling is ensured.

[0018] 4. The assembled cooling water system is convenient for inspection and dredging of the diversion water holes after disassembly to see if they are blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the main components in the present invention.

[0021] Figure 3 The present invention Figure 2 Schematic diagram of the structure at position A in the figure.

[0022] Figure 4 It is a structural schematic diagram of the water diversion hole of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the cooling water system in the present invention.

[0024] Figure 6 The present invention Figure 5 Schematic diagram of the structure at position B in the figure.

[0025] Figure 7 It is a structural schematic diagram of the position of the upper connecting seat in the present invention.

[0026] Figure 8 It is a schematic diagram of the partially cut-away enlarged structure of the present invention.

[0027] Description of reference numerals: 1. Main assembly; 11. Shell; 12. Embedding groove; 13. Connecting groove; 14. First water channel; 15. Through hole; 16. Clamping groove; 17. Positioning hole; 2. Water diversion hole; 21. Cooling pipe; 22. End; 3. Cooling water system; 31. Upper connecting seat; 32. Lower connecting seat; 33. Positioning rod; 34. Clamping ring; 35. Second water channel; 36. Water inlet pipe; 37. Filter; 38. Water outlet pipe; 39. Connecting ear; 310. Pull rod; 311. Clamping nut; 4. Filter ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Specific examples are given below.

[0030] like Figure 1 and Figure 8 As shown, a method for manufacturing a high-speed drawing crystallizer cooled by a guide water hole comprises a main body component 1, on the inner wall of the main body component 1, guide water holes 2 are embedded in a parallel array, and a cooling water system 3 is tightly connected between the upper end and the lower end of the main body component 1, the cooling water system 3 is connected to the guide water hole 2, and a filter ring 4 is installed at the water inlet position where the cooling water system 3 is connected to the guide water hole 2, and the filter ring 4 is made of high-temperature resistant sponge. When in use, cooling is performed through the guide water hole 2 embedded and installed inside the main body component 1. When cooling is performed, water is supplied to the inside of the water guide hole 2 through the cooling water system 3. After the cooling water enters the inside of the water guide hole 2, heat is exchanged with the inside of the main component 1. After the heat enters the inside of the cooling water, the cooling water is heated. The hot water is discharged through the lower end of the cooling water system 3. A closed cooling circuit is formed between the cooling water system 3 and the water guide hole 2. The filter ring 4 is used to prevent impurities in the cooling water from entering the inside of the water guide hole 2, thereby reducing the risk of clogging of the water guide hole 2.

[0031] like Figure 2-Figure 3As shown, the main assembly 1 includes a shell 11, and the inside of the shell 11 is provided with embedded grooves 12 arranged in parallel, the guide water hole 2 is embedded in the embedded groove 12, and the upper end and the lower end of the shell 11 are provided with connecting grooves 13, the cooling water system 3 is tightly held in the upper and lower ends of the connecting grooves 13, the inner side of the connecting groove 13 is provided with a first water channel 14, one side of the first water channel 14 is provided with a through hole 15, and the through hole 15 is connected to the embedded groove 12, and both ends of the shell 11 are provided with a tightly held The end of the cooling water system 3 is clamped on the clamping groove 16, and the filter ring 4 is sleeved inside the first water channel 14. The end of the diversion hole 2 extends to the inside of the first water channel 14 through the through hole 15. A positioning hole 17 is opened on one side of the clamping groove 16. One end of the cooling water system 3 is plugged into the inside of the positioning hole 17. The embedding groove 12, the connecting groove 13, the clamping groove 16 and the first water channel 14 on the shell 11 are all turned by a lathe, and the through hole 15 and the positioning hole 17 are The holes are formed by drilling with a drilling machine. The main assembly can be processed by turning and drilling, which reduces the manufacturing difficulty and thus reduces the maintenance cost in the later stage. The embedded groove 12 facilitates the assembly of the diversion water hole 2. The connecting groove 13 and the clamping groove 16 facilitate the installation of the cooling water system 3, so that the two ends of the cooling water system 3 are clamped at the ends of the shell 11, so that the cooling water system 3 and the diversion water hole 2 are connected through the first water channel 14, which facilitates the uniform supply of cooling water to the inside of the diversion water hole 2, so as to achieve the effect of uniform cooling of the inside of the shell 11, improve the cooling efficiency and cooling effect, and improve the stability of the installation of the cooling water system 3 through the positioning hole 17, which is convenient for assembly. When the cooling water system 3 is not assembled, water is supplied to each diversion water hole 2 through the first water channel 14 at the upper end. By observing the water outlet at the lower end of the diversion water hole 2, it can be judged whether there is blockage, which is convenient for maintenance and dredging.

[0032] like Figure 4 As shown, the diversion water hole 2 includes a cooling pipe 21, which is made of copper alloy, and the ends of the cooling pipe 21 are bent to form a terminal 22. The diversion water hole 2 is a U-shaped structure as a whole, and the terminal 22 extends to the inside of the first water channel 14 through the through hole 15. The terminal 22 coincides with the through hole 15, and after connection, it is sealed. The cooling pipe 21 is coated with a graphene coating. Graphene has extremely high thermal conductivity and excellent chemical stability, which can significantly improve the heat conduction efficiency without affecting the circulation of cooling water. It can not only accelerate heat transfer, but also reduce the corrosion risk of the diversion water hole and extend the service life. Compared with the case where the graphene coating is not coated, the temperature drop of this scheme under the same cooling conditions can be increased by more than 10%, and the maintenance frequency is also greatly reduced. Through the terminal 22, it is convenient to extend to the inside of the first water channel 14, and through the first water channel 14, the inside of the cooling pipe 21 is supplied with water and drained, which is convenient for cooling and cooling.

[0033] like Figure 5-Figure 8 As shown, the cooling water system 3 includes an upper connecting seat 31 and a lower connecting seat 32, and the upper connecting seat 31 is clamped in the connecting groove 13 at the upper end of the shell 11, and the lower connecting seat 32 is clamped in the connecting groove 13 at the lower end of the shell 11, and the upper connecting seat 31 and the lower connecting seat 32 are tightened, and a positioning rod 33 is evenly fixed on one side of the upper connecting seat 31 and the lower connecting seat 32, and the positioning rod 33 is inserted into the inside of the positioning hole 17, and one side of the upper connecting seat 31 and the lower connecting seat 32 is turned to form a clamping ring 34, and the clamping ring 34 is clamped in the inside of the clamping groove 16, and after clamping, the connection position is fixed. The upper connecting seat 31 and the lower connecting seat 32 are both turned inside to form a second water channel 35, and the second water channel 35 corresponds to the first water channel 14. A water inlet pipe 36 is fixedly installed on one side of the second water channel 35 on the upper connecting seat 31, and a filter 37 is installed in the middle of the water inlet pipe 36. A water outlet pipe 38 is fixedly installed on one side of the second water channel 35 on the lower connecting seat 32. Connecting ears 39 are fixedly installed on the outer sides of the upper connecting seat 31 and the lower connecting seat 32 in a circumferential array, and a pull rod 3 with a threaded end is inserted between the connecting ears 39 on the upper connecting seat 31 and the lower connecting seat 32. 10, the end of the pull rod 310 is threadedly connected with a clamping nut 311, and the clamping nut 311 is pressed against the connecting ear 39. When installing, the upper connecting seat 31 and the lower connecting seat 32 are respectively sleeved on the upper end and the lower end of the shell 11, and the distance between the upper connecting seat 31 and the lower connecting seat 32 is shortened by the pull rod 310 and the clamping nut 311, so that the upper connecting seat 31 and the lower connecting seat 32 are clamped to the two ends of the shell 11, and the clamping ring 34 is used to improve the clamping effect and the sealing performance after clamping, and the second water in the upper connecting seat 31 is conveniently connected through the water inlet pipe 36. The cooling water is supplied to the channel 35, and when the water is supplied, it passes through the filter 37 to further reduce the risk of clogging the cooling pipe 21, and the cooling water after heat exchange through the cooling pipe 21 enters the second water channel 35 in the lower connecting seat 32, and is discharged through the outlet pipe 38, so as to achieve the effect of cooling water circulation, and when the upper connecting seat 31 and the lower connecting seat 32 are clamped, the positioning rod 33 is used to improve the stability and connection accuracy during installation, and avoid the upper connecting seat 31 and the lower connecting seat 32 from rotating after installation, so as to facilitate cooling.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for manufacturing a high-speed drawing crystallizer with diversion water hole cooling, characterized in that: The high-drawing speed crystallizer comprises a main body component (1), the inner wall of the main body component (1) is embedded with diversion holes (2) in a parallel array, and a cooling water system (3) is tightly connected between the upper end and the lower end of the main body component (1), the cooling water system (3) is connected to the diversion holes (2), and a filter ring (4) is installed at the water inlet position where the cooling water system (3) is connected to the diversion holes (2), and the filter ring (4) is made of high-temperature resistant sponge. When making it, the following steps are included: Step 1: First, the main body component (1), the water guide hole (2), and the cooling water system (3) are manufactured by a machine tool, and after the separate manufacturing is completed; Step 2: assembling, first assembling the water guide hole (2) and embedding it into the interior of the main body component (1); Step three: assemble the cooling water system (3) at both ends of the main component (1), so that a sealed cooling circulation loop is formed between the cooling water system (3) and the guide water hole (2).

2. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 1, characterized in that: The main body component (1) comprises a shell (11), the interior of the shell (11) is provided with embedding grooves (12) arranged in parallel, the water guide holes (2) are embedded in the embedding grooves (12), and the upper and lower ends of the shell (11) are provided with connecting grooves (13), the cooling water system (3) is tightly held in the connecting grooves (13) at the upper and lower ends, a first water channel (14) is provided on the inner side of the connecting groove (13), a through hole (15) is provided on one side of the first water channel (14), and the through hole (15) is connected to the embedding groove (12).

3. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 2, characterized in that: Both ends of the shell (11) are provided with clamping grooves (16), the end of the cooling water system (3) is clamped on the clamping groove (16), and the filter ring (4) is sleeved inside the first water channel (14), the end of the diversion water hole (2) extends to the inside of the first water channel (14) through the through hole (15), and a positioning hole (17) is provided on one side of the clamping groove (16), and one end of the cooling water system (3) is inserted into the inside of the positioning hole (17).

4. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 3, characterized in that: The embedding groove (12), the connecting groove (13), the clamping groove (16) and the first water channel (14) on the shell (11) are all formed by turning on a lathe, and the through hole (15) and the positioning hole (17) are formed by drilling on a drilling machine.

5. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 3, characterized in that: The water guide hole (2) comprises a cooling tube (21), the cooling tube (21) is made of a copper alloy material, and the ends of the cooling tube (21) are bent to form an end head (22), the water guide hole (2) is an overall U-shaped structure, and the end head (22) extends through the through hole (15) to the inside of the first water channel (14), the end head (22) is consistent with the through hole (15), and after connection, a sealing treatment is performed, and a graphene coating is coated on the cooling tube (21).

6. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 3, characterized in that: The cooling water system (3) comprises an upper connecting seat (31) and a lower connecting seat (32), wherein the upper connecting seat (31) is clamped inside the connecting groove (13) at the upper end of the shell (11), and the lower connecting seat (32) is clamped inside the connecting groove (13) at the lower end of the shell (11), and the upper connecting seat (31) and the lower connecting seat (32) are tightened, and positioning rods (33) are evenly fixedly installed on one side of the upper connecting seat (31) and the lower connecting seat (32), and the positioning rods (33) are inserted into the inside of the positioning hole (17).

7. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 6, characterized in that: The inner side of the upper connecting seat (31) and the inner side of the lower connecting seat (32) are both turned to form a clamping ring (34), and the clamping ring (34) is clamped inside the clamping groove (16), and after clamping, the connection position is sealed.

8. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 7, characterized in that: The interior of the upper connecting seat (31) and the lower connecting seat (32) are both turned to form a second water channel (35), and the second water channel (35) corresponds to the first water channel (14); a water inlet pipe (36) is fixedly mounted on one side of the second water channel (35) on the upper connecting seat (31), a filter (37) is mounted in the middle of the water inlet pipe (36), and a water outlet pipe (38) is fixedly mounted on one side of the second water channel (35) on the lower connecting seat (32).

9. The method for manufacturing a high-speed drawing crystallizer with water guide hole cooling according to claim 7, characterized in that: Connecting ears (39) are fixedly installed in a circumferential array on the outer sides of the upper connecting seat (31) and the lower connecting seat (32), and a pull rod (310) with a threaded end is inserted between the connecting ears (39) on the upper connecting seat (31) and the lower connecting seat (32), and a clamping nut (311) is threadedly connected to the end of the pull rod (310), and the clamping nut (311) is pressed against the connecting ears (39).

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