CN112247086B - Working roll device, double-roll thin strip continuous casting equipment and continuous casting production process - Google Patents
Working roll device, double-roll thin strip continuous casting equipment and continuous casting production process Download PDFInfo
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- CN112247086B CN112247086B CN202011130785.6A CN202011130785A CN112247086B CN 112247086 B CN112247086 B CN 112247086B CN 202011130785 A CN202011130785 A CN 202011130785A CN 112247086 B CN112247086 B CN 112247086B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/0651—Casting wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
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Abstract
The invention discloses a work roll device and a double-roll thin strip continuous casting device. Wherein, the work roll device includes: the working part is provided with at least two drainage channels, and the at least two drainage channels comprise a first drainage channel and a second drainage channel; the first connecting part is provided with at least one first water inlet channel and at least one first water outlet channel, any one first water inlet channel is communicated with the first water drainage channel, and any one first water outlet channel is communicated with the second water drainage channel; the second connecting portion, the second connecting portion are provided with at least one second inhalant canal and at least one second exhalant canal, and arbitrary second inhalant canal is linked together with second drainage channel, and arbitrary second exhalant canal is linked together with first drainage channel. The working roll device provided by the invention improves the uniformity of the cold zone effect of the working part, is beneficial to improving the quality of thin strips processed by the working roll device, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of double-roller thin-strip continuous casting, in particular to a working roller device, double-roller thin-strip continuous casting equipment and a continuous casting production process.
Background
The twin-roll thin strip continuous casting technology is a leading-edge technology with short flow path, low cost and environmental protection in the field of metallurgy. The process integrates the traditional technological processes of continuous casting, rolling, heat treatment and the like, completes the short-flow thin strip continuous casting production line, and greatly shortens the flow of the whole production line.
The basic principle of the twin-roll thin strip continuous casting technology is that molten liquid molten steel in a molten state enters a gap between two working roll devices which run at a relatively high speed through a water distribution opening device, cooling water is introduced into the working roll devices, heat of the metal liquid is taken away, and the liquid metal is changed into plate strip steel with a liquid core. In the process, the action of casting and rolling force exists between the working rolls, so that the crystallization and rolling processes are realized.
The work roll apparatus is one of the key components in a twin roll strip casting apparatus, and the cooling capacity and the uniformity of cooling of the work roll apparatus are key factors affecting the quality of cast strip. The length of the cooling water channel of the cooling roller device in the related art is approximately equal to the length of the working part of the working roller device, i.e., the water inlet end and the water outlet end of the cooling water channel are both arranged on the working part of the working roller device, so that the cooling capacity of the two ends of the working part of the working roller device is stronger, and the overall cold zone effect of the working part is uneven.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention proposes a work roll device.
A second aspect of the present invention provides a twin roll strip casting apparatus.
The third aspect of the invention provides a continuous casting production process.
In view of this, a first aspect of the present invention provides a work roll apparatus including: the working part is provided with at least two drainage channels, and the at least two drainage channels comprise a first drainage channel and a second drainage channel; the first connecting part is arranged at one end of the working part and is provided with at least one first water inlet channel and at least one first water outlet channel, any one first water inlet channel is communicated with the first water drainage channel, and any one first water outlet channel is communicated with the second water drainage channel; the second connecting portion, second connecting portion and first connecting portion set up the both ends at the working part along the axial of working part, and the second connecting portion are provided with at least one second inhalant canal and at least one second exhalant canal, and arbitrary second inhalant canal is linked together with second drainage channel, and arbitrary second exhalant canal is linked together with first drainage channel.
In addition, the work roll device in the above technical solution provided by the present invention may further have the following additional technical features:
further, the working portion includes: the first sleeve body is provided with a first through hole, a second through hole, a third through hole and a fourth through hole; the second sleeve body is arranged on one side of the first sleeve body, which is far away from the axis of the first sleeve body, and is distributed at intervals with the first sleeve body; the first connecting piece is connected with the same end part of the first sleeve body and the second sleeve body, the first sleeve body, the second sleeve body and the first connecting piece surround a drainage channel, the first drainage channel is communicated with the first through hole and the second through hole, and the second drainage channel is communicated with the third through hole and the fourth through hole.
Further, the working portion further includes: the third sleeve body, the third sleeve body and the second sleeve body are arranged on two sides of the first sleeve body and connected with the first sleeve body; the first connecting part is connected with the same end of the first sleeve body, the second sleeve body and the third sleeve body, the second connecting part is connected with the other end of the first sleeve body, the other end of the second sleeve body and the other end of the third sleeve body, the first water inlet channel is communicated with the first through hole, the second water outlet channel is communicated with the second through hole, the second water inlet channel is communicated with the third through hole, and the first water outlet channel is communicated with the fourth through hole.
Further, the working portion further includes: an adjustment section; the third sleeve body comprises a first supporting sleeve and a second supporting sleeve which are distributed along the axial direction of the working part, the adjusting part is positioned between the first supporting part and the second supporting part and is connected with the first supporting sleeve and the second supporting sleeve, and the adjusting part works to enable the first supporting sleeve to be telescopic relative to the second supporting sleeve along the axial direction of the working part.
Furthermore, any first water inlet channel comprises a first water inlet hole, a first flow channel and a first water drainage channel which are communicated, the first water inlet hole and the first water drainage channel are arranged along the radial direction of the first connecting part, the first flow channel is arranged along the axial direction of the first connecting part, and the first water drainage channel is communicated with the first through hole; any one first water outlet channel comprises a first inlet hole, a second flow channel and a first outlet hole which are communicated, the first inlet hole and the first outlet hole are arranged along the radial direction of the first connecting part, the second flow channel is arranged along the axial direction of the first connecting part, and the first inlet hole is communicated with the fourth through hole; any one second water inlet channel comprises a second water inlet hole, a third flow channel and a second water drainage groove which are communicated, the second water inlet hole and the second water drainage groove are arranged along the radial direction of the second connecting part, the third flow channel is arranged along the axial direction of the second connecting part, and the second water drainage groove is communicated with the third through hole; any one second water outlet channel comprises a second inlet hole, a fourth flow channel and a second outlet hole which are communicated, the second inlet hole and the second outlet hole are arranged along the radial direction of the second connecting part, the fourth flow channel is arranged along the axial direction of the second connecting part, and the second inlet hole is communicated with the second through hole.
Further, still include: the guide plate is obliquely arranged on one side of the first drainage tank close to the working part and is opposite to the first flow channel; and/or the guide plate is obliquely arranged on one side of the second drainage groove close to the working part and is opposite to the third flow channel.
Further, the first drain groove and/or the second drain groove is an annular groove.
Further, the thickness of the working part is 90mm to 120 mm; and/or the ratio of the cross section of the drainage channel to the cross section of the working part is 0.9 to 1.4; and/or the first drainage channel and the second drainage channel are alternately distributed along the circumferential direction of the working part; and/or the number of the first and second drainage channels is equal.
According to a second aspect of the present invention, there is provided a twin roll strip casting apparatus including: a drive section; and the working roll device of any technical scheme, the channel part is connected with the working roll device.
The invention provides a working roll device, which comprises a working part, a first connecting part and a second connecting part, wherein the working roll device can be used for a double-roll thin strip continuous casting device, namely the double-roll thin strip continuous casting device comprises two working roll devices, molten steel in a molten state is contacted with the working part of the working roll device during the working process of the double-roll thin strip continuous casting device, and the working part is provided with a drainage channel, so that the molten steel is rapidly cooled during the contact process, a sheet steel strip with a liquid core is formed, and the process that the molten steel is changed into a solid state or a semi-solid state from a liquid state is realized.
According to a third aspect of the present invention, there is provided a continuous casting production process comprising: the continuous casting production process comprises a large ladle, a middle ladle, a cloth bag, a rolling mill, an ultra-fast cooling device, a coiling device and a working roll device according to any one of the technical schemes of the first aspect, and is used for directly casting and rolling molten steel into qualified hot rolled strips.
The working roll device provided by the invention has the advantages that the first connecting part and the second connecting part are distributed at two ends of the working part along the axial direction of the working part, wherein the working part is provided with at least two drainage channels, the at least two drainage channels comprise a first drainage channel and a second drainage channel, the first connecting part is provided with at least one first water inlet channel and at least one first water outlet channel, the second connecting part is provided with at least one second water inlet channel and at least one second water outlet channel, and any one first water inlet channel is communicated with the first drainage channel and the second water outlet channel to form a first group of cooling channels. Any one second water inlet channel is communicated with the second water drainage channel and the first water outlet channel to form a second group of cooling channels. The first group of cooling channels and the second group of cooling channels are opposite in flow direction, so that the uniformity of cooling of the working part of the working roll device is improved. Meanwhile, the first water inlet channel, the first water outlet channel and the second water inlet channel and the second water outlet channel are respectively arranged on the first connecting part and the second connecting part which are positioned at two ends of the working part and are not directly arranged on the working part, so that the problems that in the related technology, the water inlet end and the water outlet end of the cooling water channel are arranged at the end parts of the working part, the cooling capacity at two ends of the working part is stronger, the whole cold area effect of the working part is not uniform are solved, the uniformity of the cold area effect of the working part is further improved, the quality of a thin belt processed by the working roller device is favorably improved, and the working roller device is suitable for popularization and application.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
the above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a schematic structural view of a work roll apparatus provided in accordance with one embodiment of the present invention;
fig. 2 shows a cross-sectional view a-a of the embodiment shown in fig. 1.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
100 work roll apparatus, 10 work section, 102 first water drainage channel, 104 second water drainage channel, 106 first cover body, 108 second cover body, 110 third cover body, 112 first through hole, 114 second through hole, 116 third through hole, 118 fourth through hole, 120 first support cover, 122 second support cover, 124 adjustment part, 20 first connection part, 202 first water inlet channel, 204 first water outlet channel, 206 first inlet hole, 208 first flow channel, 210 first water drainage channel, 212 first inlet hole, 214 second flow channel, 216 first outlet hole, 218 first water collection tank, 220 second water collection tank, 30 second connection part, 302 second water inlet channel, 304 second water outlet channel, 306 second inlet hole, 308 third flow channel, 310 second water drainage tank, 312 second inlet hole, 314 fourth flow channel, 316 second outlet hole, 318 third water collection tank, 320 fourth water collection tank, 40 guide plate.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The work roll apparatus 100, the twin roll thin strip continuous casting apparatus, and the continuous casting production process according to some embodiments of the present invention will be described below with reference to fig. 1 and 2.
According to an embodiment of the first aspect of the present invention, there is provided a work roll apparatus 100 including: the working part 10, the working part 10 is provided with at least two drainage channels, the at least two drainage channels comprise a first drainage channel 102 and a second drainage channel 104; the first connecting part 20 is arranged at one end of the working part 10, the first connecting part 20 is provided with at least one first water inlet channel 202 and at least one first water outlet channel 204, any one first water inlet channel 202 is communicated with the first water discharging channel 102, and any one first water outlet channel 204 is communicated with the second water discharging channel 104; the second connecting portion 30, the second connecting portion 30 and the first connecting portion 20 are disposed at two ends of the working portion 10 along the axial direction of the working portion 10, the second connecting portion 30 is provided with at least one second water inlet channel 302 and at least one second water outlet channel 304, any one of the second water inlet channels 302 is communicated with the second water discharge channel 104, and any one of the second water outlet channels 304 is communicated with the first water discharge channel 102.
The present invention provides a work roll apparatus 100, as shown in fig. 1 and 2, including a work part 10, a first connection part 20, and a second connection part 30, wherein the work roll apparatus 100 may be used in a twin roll strip casting apparatus, i.e., the twin roll strip casting apparatus includes two work roll apparatuses 100, molten steel in a molten state contacts the work part 10 of the work roll apparatus 100 during operation of the twin roll strip casting apparatus, and since the work part 10 is provided with a drain passage, the molten steel is rapidly cooled during contact and a strip steel with a liquid core is formed, thereby achieving a process of changing the molten steel from a liquid state to a solid state or a semi-solid state.
In the work roll device 100 provided by the present invention, the first connection portion 20 and the second connection portion 30 are distributed at two ends of the work portion 10 along the axial direction of the work portion 10, wherein the work portion 10 is provided with at least two water drainage channels, the at least two water drainage channels include the first water drainage channel 102 and the second water drainage channel 104, the first connection portion 20 is provided with at least one first water inlet channel 202 and at least one first water outlet channel 204, the second connection portion 30 is provided with at least one second water inlet channel 302 and at least one second water outlet channel 304, and any one of the first water inlet channels 202 is communicated with the first water drainage channel 102 and the second water outlet channel 304 to form a first group of cooling channels, as shown by solid arrows in fig. 1. Any one of the second water inlet channels 302 is communicated with the second water outlet channel 104 and the first water outlet channel 204 to form a second group of cooling channels, as shown by the dashed arrows in fig. 1. The opposite flow of the liquid in the first and second sets of cooling channels is beneficial to improve the uniformity of the cooling effect of the working portion 10 of the work roll apparatus 100. Meanwhile, the first water inlet channel 202, the first water outlet channel 204, the second water inlet channel 302 and the second water outlet channel 304 are respectively arranged on the first connecting part 20 and the second connecting part 30 at two ends of the working part 10 and are not directly arranged on the working part 10, so that the problems that the water inlet end and the water outlet end of a cooling water channel are arranged at the end parts of the working part in the related art, the cooling capacity at two ends of the working part is stronger, the integral cooling effect of the working part is not uniform are solved, the uniformity of the cold zone effect of the working part 10 is further improved, the quality of thin strips processed by the working roll device 100 is improved, and the device is suitable for popularization and application.
Further, the first coupling portion 20 of the work roll apparatus 100 may be a driving side stub shaft and the second coupling portion 30 may be an operating side stub shaft, and it is understood that the first coupling portion 20 and the second coupling portion 30 may have other configurations as required.
In the above embodiment, further, the working portion 10 includes: the first sleeve body 106 is provided with a first through hole 112, a second through hole 114, a third through hole 116 and a fourth through hole 118; the second sleeve 108 is arranged on one side of the first sleeve 106 away from the axis of the first sleeve 106, and is distributed at intervals with the first sleeve 106; the first connecting piece is connected with the same end of the first sleeve 106 and the second sleeve 108, the first sleeve 106, the second sleeve 108 and the first connecting piece surround a drainage channel, the first drainage channel 102 is communicated with the first through hole 112 and the second through hole 114, and the second drainage channel 104 is communicated with the third through hole 116 and the fourth through hole 118.
In this embodiment, as shown in fig. 1 and fig. 2, the working portion 10 includes a first sleeve 106, a second sleeve 108 and a first connecting member, wherein the second sleeve 108 is spaced apart from the first sleeve 106 and located on a side of the first sleeve 106 away from an axis of the first sleeve 106, that is, the second sleeve 108 is located outside the first sleeve 106, and is connected to the same end of the first sleeve 106 and the second sleeve 108 by the first connecting member, and a first through hole 112, a second through hole 114, a third through hole 116 and a fourth through hole 118 are provided on the first sleeve 106, so that the first sleeve 106, the second sleeve 108 and the first connecting member cooperate to form a drainage channel. The first drainage channel 102 is connected to the first through hole 112 and the second through hole 114, and the second drainage channel 104 is connected to the third through hole 116 and the fourth through hole 118, so as to ensure that the two drainage channels simultaneously flow through the working portion 10. The drainage channel provided by the invention is formed by the first sleeve body 106, the second sleeve body 108 and the first connecting piece in a surrounding manner, namely the drainage channel is an open channel in the processing process, so that the precision of the processing process can be effectively ensured, the sizes of the first drainage channel 102 and the second drainage channel 104 and the distance between the first drainage channel 102 and the second drainage channel 104 are ensured, the uniformity of cooling of the working part 10 is favorably improved, the requirements of different cooling capacities of the working roller device 100 can be met, the working capacity of the working roller device 100 is ensured, and the application range of products is expanded.
Further, the first connecting piece can be a bolt, an adhesive or other connecting structures meeting the requirements. Specifically, the first connecting member is a bolt, the first sleeve 106 and the second sleeve 108 are assembled together by interference fit and hot-fitting, and two ends of the first sleeve 106 and the second sleeve 108 are connected by the bolt, so as to form a drainage channel along the axial direction of the working surface of the working portion 10. Specifically, the cross-sectional area of the drainage channel may be approximately circular, approximately square, or approximately trapezoidal, or may be other shapes that meet the requirements, so as to meet the requirements of different cooling capacities of the working portion 10, and the application range is wide. Further, the portion of the first connecting member connected to the first sleeve 106 and the second sleeve 108 may be provided with a sealing member to ensure the tightness of the drainage channel.
In any of the above embodiments, further, the working portion 10 further includes: the third sleeve body 110, the third sleeve body 110 and the second sleeve body 108 are arranged on two sides of the first sleeve body 106, and the third sleeve body 110 is connected with the first sleeve body 106; the first connecting portion 20 is connected to the same ends of the first sleeve 106, the second sleeve 108 and the third sleeve 110, the second connecting portion 30 is connected to the other ends of the first sleeve 106, the second sleeve 108 and the third sleeve 110, the first water inlet channel 202 is communicated with the first through hole 112, the second water outlet channel 304 is communicated with the second through hole 114, the second water inlet channel 302 is communicated with the third through hole 116, and the first water outlet channel 204 is communicated with the fourth through hole 118.
In this embodiment, as shown in fig. 1, the working portion 10 further includes a third sleeve body 110, and the third sleeve body 110 is located inside the first sleeve body 106, that is, the working portion 10 includes, in order from inside to outside, the third sleeve body 110, the first sleeve body 106, and the second sleeve body 108 connected to each other. The first connecting portion 20 is connected to the same end of the first sleeve 106, the second sleeve 108 and the third sleeve 110, the second connecting portion 30 is connected to the other end of the first sleeve 106, the second sleeve 108 and the third sleeve 110, that is, the first sleeve 106, the second sleeve 108 and the third sleeve 110 integrally form the working portion 10, and the first connecting portion 20 and the second connecting portion 30 are connected to the two ends of the working portion 10 by being connected to the first sleeve 106, the second sleeve 108 and the third sleeve 110 respectively. This connection is beneficial to ensure the sealing performance of the first drainage channel 102 in communication with the first water inlet channel 202 and the second water outlet channel 304, and the sealing performance of the second drainage channel 104 in communication with the second water inlet channel 302 and the first water outlet channel 204, so as to further ensure that the working portion 10 has higher cooling capacity, reduce energy loss, and save processing cost.
Further, the contact parts of the first connecting part 20 and the second connecting part 30 and the working part 10 are in interference fit, so that the gaps between the first connecting part 20 and the working part 10 and between the second connecting part 30 and the working part 10 are reduced, the rigidity and the strength of the whole work roll device 100 are improved, the deformation of the integral rigidity of the work roll device 100 is reduced to a great extent when the work roll device 100 rotates, and the quality of products is improved.
Further, the third sleeve body 110 can increase the contact area between the first connecting portion 20 and the working portion 10, for example, by increasing the length of the first connecting portion 20 (e.g., driving side shaft head) and the second connecting portion 30 (e.g., operating side shaft head) extending to the inner side of the third sleeve body 110, so as to further improve the connection reliability between the first connecting portion 20 and the working portion 10 and the second connecting portion 30.
In any of the above embodiments, further, the working portion 10 further includes: an adjustment portion 124; the third sleeve body 110 includes a first support sleeve 120 and a second support sleeve 122 distributed along the axial direction of the working portion 10, an adjustment portion 124 is located between the first support portion and the second support portion and connects the first support sleeve 120 and the second support sleeve 122, and the adjustment portion 124 operates to make the first support sleeve 120 telescopic relative to the second support sleeve 122 along the axial direction of the working portion 10.
In this embodiment, the working portion 10 further includes an adjusting portion 124, the third sleeve body 110 includes a first supporting sleeve 120 and a second supporting sleeve 122 distributed along the axial direction of the working portion 10, the first supporting sleeve 120 and the second supporting sleeve 122 are disposed between the first supporting sleeve 120 and the second supporting sleeve 122 through the adjusting portion 124 and are connected to the first supporting sleeve 120 and the second supporting sleeve 122, the adjusting portion 124 is operable to enable the first supporting sleeve 120 to be telescopic relative to the second supporting sleeve 122 along the axial direction of the working portion 10, that is, the axial distance between the first supporting sleeve 120 and the second supporting sleeve 122 can be adjusted through the adjusting portion 124, so that the length of the third sleeve body 110 meets the rigidity and strength of different work roller devices 100, the reliability of the work of the product is improved, good and uniform cooling performance is ensured, and good quality of the product is ensured.
Specifically, the adjusting portion 124 is a self-lubricating sleeve, and it is understood that the adjusting portion 124 may have other structures as required.
In any of the above embodiments, further, any of the first water inlet channels 202 includes a first inlet hole 206, a first flow channel 208 and a first water outlet groove 210 which are communicated with each other, the first inlet hole 206 and the first water outlet groove 210 are arranged along the radial direction of the first connecting portion 20, the first flow channel 208 is arranged along the axial direction of the first connecting portion 20, and the first water outlet groove 210 is communicated with the first through hole 112; any first outlet passage 204 includes a first inlet hole 212, a second flow passage 214 and a first outlet hole 216 which are communicated with each other, the first inlet hole 212 and the first outlet hole 216 are arranged along the radial direction of the first connecting portion 20, the second flow passage 214 is arranged along the axial direction of the first connecting portion 20, and the first inlet hole 212 is communicated with the fourth through hole 118; any one of the second water inlet passages 302 comprises a second inlet hole 306, a third flow passage 308 and a second water discharge groove 310 which are communicated with each other, the second inlet hole 306 and the second water discharge groove 310 are arranged along the radial direction of the second connecting part 30, the third flow passage 308 is arranged along the axial direction of the second connecting part 30, and the second water discharge groove 310 is communicated with the third through hole 116; any one of the second outlet passages 304 includes a second inlet hole 312, a fourth flow passage 314, and a second outlet hole 316 that are communicated with each other, the second inlet hole 312 and the second outlet hole 316 are disposed along a radial direction of the second connecting portion 30, the fourth flow passage 314 is disposed along an axial direction of the second connecting portion 30, and the second inlet hole 312 is communicated with the second through hole 114.
In this embodiment, the structure of the first water inlet channel 202, the first water outlet channel 204, the second water inlet channel 302 and the second water outlet channel 304 is specifically defined. The first flow channel 208 and the second flow channel 214 are axially arranged along the first connection portion 20, and the third flow channel 308 and the fourth flow channel 314 are axially arranged along the second connection portion 30, so that the lengths of the first flow channel 208, the second flow channel 214, the third flow channel 308 and the fourth flow channel 314 in the axial direction of the working portion 10 are effectively reduced, cooling water can flow into the first drainage channel 102 through the first flow channel 208 and be quickly discharged through the fourth flow channel 314, the cooling water can flow into the second drainage channel 104 through the third flow channel 308 and be quickly discharged through the second flow channel 214, the heat exchange capacity of the working portion 10 can be improved, and good cooling performance can be ensured.
The first inlet hole 206 and the first outlet hole 216 are arranged along the radial direction of the first connecting portion 20, and the second inlet hole 306 and the second outlet hole 316 are arranged along the radial direction of the second connecting portion 30, so that the work roll device 100 can be conveniently connected with a water inlet device and a water outlet device, and the cooling water can be recycled.
Specifically, the cooling water flows in from the first inlet 206, flows into the first drainage channel 102 through the first flow channel 208, the first drainage groove 210 and the first through hole 112, and then is discharged through the second through hole 114, the second inlet 312, the fourth flow channel 314 and the second outlet 316 to form a first group of cooling channels, as shown by the solid arrows in fig. 1. Meanwhile, the cooling water flows in from the second inlet hole 306, flows into the second drainage channel 104 through the third flow channel 308, the second drainage groove 310 and the third through hole 116, and is then discharged through the fourth through hole 118, the first inlet hole 212, the second flow channel 214 and the first outlet hole 216, forming a second group of cooling channels, as indicated by the dashed arrows in fig. 1. The opposite flow directions of the cooling water in the first and second sets of cooling channels are beneficial to improving the uniformity of the cooling effect of the working part 10.
In any of the above embodiments, further comprising: a guide plate 40 obliquely disposed on one side of the first drain tank 210 close to the working unit 10 and opposed to the first flow channel 208; and/or the guide plate 40 is obliquely provided on the second drain groove 310 on the side close to the working part 10, and is disposed opposite to the third flow channel 308.
In this embodiment, on the one hand, the guide plate 40 is obliquely disposed on the side of the first drainage channel 210 close to the working portion 10 and is disposed opposite to the first flow channel 208, which is beneficial to ensure that the cooling water can be reflected to the first through hole 112 of the first sleeve 106, that is, the water inflow of the cooling water of the first drainage channel 102 is increased, the pressure loss after the cooling water turns right angle is reduced, which is beneficial to saving energy and reducing manufacturing cost.
On the other hand, the guide plate 40 is obliquely arranged on the side of the second drainage groove 310 close to the working part 10 and is arranged opposite to the third flow channel 308, so that the cooling water can be reflected to the third through hole 116 of the first sleeve body 106, that is, the water inflow of the cooling water of the second drainage channel 104 is increased, the pressure loss of the cooling water after the cooling water is turned right-angled is reduced, the energy is saved, and the manufacturing cost is reduced.
On the other hand, the guide plates 40 may be disposed in the first drain tank 210 and the second drain tank 310 at the same time, which is beneficial to further reducing energy loss and ensuring good cooling capability.
In any of the above embodiments, further, the first drain groove 210 and/or the second drain groove 310 are annular grooves.
In this embodiment, on one hand, the first water drainage groove 210 is an annular groove, that is, the annular groove communicates with any one of the first water inlet channels 202 and any one of the first water drainage channels 102, so that water in all the first water inlet channels 202 is gathered by the first water drainage groove 210 and then uniformly flows to the plurality of first water drainage channels 102, which is beneficial to ensuring uniformity of water flow of the plurality of first water drainage channels 102, and further improving uniformity of cooling.
On the other hand, the second water drainage groove 310 is an annular groove, that is, the annular groove communicates with any one of the second water inlet channels 302 and any one of the second water drainage channels 104, so that water in all the second water inlet channels 302 uniformly flows to the plurality of second water drainage channels 104 after being gathered by the second water drainage groove 310, which is beneficial to ensuring uniformity of water flow of the plurality of second water drainage channels 104, and further improving uniformity of cooling.
In still another aspect, the first drain groove 210 and the second drain groove 310 may be provided as annular grooves at the same time, which is advantageous to further improve the cooling uniformity of the working part 10.
In any of the above embodiments, further, the working portion 10 has a thickness of 90mm to 120 mm; and/or the ratio of the cross section of the drainage channel to the cross section of the working part 10 is 0.9 to 1.4; and/or the first and second drainage channels 102 and 104 are alternately distributed along the circumferential direction of the working portion 10; and/or the number of first and second drain passages 102, 104 may be equal.
In this embodiment, the thickness of the working portion 10 is 90mm to 120mm, that is, the distance from the outer edge of the second sleeve 108 to the axis of the third sleeve 110 in the direction perpendicular to the axis of the working portion 10 is 90mm to 120mm, and the thickness range is set to be favorable for ensuring that the drain channel has a sufficient size to ensure a good cooling capacity, and at the same time, ensuring the overall strength and rigidity of the work roll device 100 and improving the reliability of the product. Specifically, the thicknesses of the two cylindrical first sleeve bodies 106 and the second sleeve bodies 108 are designed according to different heat exchange capacities, the two cylindrical first sleeve bodies and the two cylindrical second sleeve bodies are pressed together through interference fit, and the magnitude of interference is determined according to repeated tests. The joint of the two ends of the first sleeve 106 and the second sleeve 108 is provided with a sealing device.
The ratio of the cross-sectional area of the drainage channel to the cross-sectional area of the working portion 10 is 0.9 to 1.4, wherein the drainage channel comprises the first drainage channel 102 and the second drainage channel 104, and thus the cooling capacity of the working portion 10 is effectively improved, and the productivity of the production line is improved. Specifically, the cross-sectional area of the drainage channel is approximately circular, the diameter of the drainage channel is 1.3 to 1.5 times that of a round hole in the conventional process in the prior art, the influence of thermal stress caused by cold and hot alternation in the casting and rolling process is balanced by the size of the drainage channel, and the heat exchange capacity of the working part 10 is greatly improved.
The first and second water discharge passages 102 and 104 are alternately arranged along the circumferential direction of the working part 10, and since the flow directions of the cooling water of the first and second water discharge passages 102 and 104 are opposite, the alternately arranged plurality of first and second water discharge passages 102 and 104 is advantageous to ensure the uniformity of cooling of the working part 10 and to provide the working part 10 with high cooling capacity.
The equal number of the first and second drainage channels 102 and 104 is advantageous to further improve the cooling uniformity of the working portion 10.
Further, the first sleeve body 106, the second sleeve body 108 and the third sleeve body 110 are beryllium copper parts; the first sleeve 106 and the second sleeve 108 are hot assembled, and the first connection portion 20 and the third sleeve 110 are welded together; the second connecting part 30 is welded with the third sleeve body 110, and the first connecting part 20 is connected with the working part 10 in an interference fit manner; the second connecting portion 30 is connected to the working portion 10 in an interference fit manner.
According to a second aspect of the present invention, there is provided a twin roll strip casting apparatus including: a drive section; and the work roll apparatus 100 of any of the above embodiments, the channel portion is connected to the work roll apparatus 100.
The twin roll strip casting apparatus according to the present invention includes a driving part connected to the work roll apparatus 100 and driving the work roll apparatus 100 to operate, and the work roll apparatus 100 according to any one of the above embodiments.
Further, the twin roll strip casting apparatus further includes: large bags, medium bags, cloth bag bags, rolling mills, coiling machines and other process equipment.
According to a third aspect of the present invention, there is provided a continuous casting production process comprising: the continuous casting production process comprises the working roll device of any embodiment of the first aspect, so that all beneficial technical effects of the working roll device of the first aspect are achieved, and the continuous casting production process is not repeated herein.
In the specific embodiment provided by the invention, the twin-roll thin strip continuous casting technology is a leading-edge technology which has short flow path, low cost and environmental protection in the field of metallurgy. The method integrates the traditional technological processes of continuous casting, rolling, heat treatment and the like, completes the short-flow thin strip continuous casting production line, and greatly shortens the flow of the whole production line. The whole process saves a large amount of labor cost and energy cost; the process of ingot casting surface milling is saved, the head and tail cutting after hot rolling is reduced, and the yield is improved; the occupied area is small, the equipment is simple and centralized, and the early investment is small; the material has unique sub-rapid solidification characteristics, special microstructure and excellent performance; the thickness of the obtained casting belt is close to that of the final product, and the casting belt has obvious advantages for preparing certain low-plasticity materials, difficult-to-process materials and functional materials. Therefore, the process has the advantages of less equipment investment, low energy consumption and the like, and realizes green manufacturing in the steel industry.
The invention relates to a work roll device 100, which comprises a work part 10, a first connecting part 20 (a transmission side shaft head), a second connecting part 30 (an operation side shaft head), and an adjusting part 124 (a self-lubricating shaft sleeve), wherein the work part 10 comprises a first sleeve body 106 (a water-cooling sleeve middle sleeve), a second sleeve body 108 (a water-cooling sleeve outer sleeve) and a third sleeve body 110 (a water-cooling sleeve inner sleeve), wherein the first sleeve body 106, the second sleeve body 108 and the third sleeve body 110 are formed by combining three layers of beryllium copper alloys, the thickness of the first sleeve body 106, the thickness of the second sleeve body 108 and the thickness of the third sleeve body 110 is 90mm to 120mm, specifically 106.5mm, and other required values can also be met.
The first connecting part 20 and the second connecting part 30 are combined to the second sleeve body 108 and the first sleeve body 106 through bolts, and the place where the first sleeve body 106 and the second sleeve body 108 are combined is sealed between the first connecting part 20 and the working part 10 through a sealing element. The first connecting portion 20 and the second connecting portion 30 are connected to the third jacket body 110, and the length of the third jacket body 110 is adjusted by the adjusting portion 124, so that the strength of the whole work roll device 100 is increased, and the rigidity of the whole work roll device 100 is ensured. The first connecting portion 20 and the second connecting portion 30 located at both sides of the working portion 10 are connected with the working portion 10 by interference fit to form a complete cooling channel, so as to take away heat generated in a process of converting liquid steel into a steel strip with a liquid core in a twin-roll strip casting process.
Further, two or more cooling circuits are provided in the entire work roll apparatus 100 according to the length and heat dissipation effect of the work portion 10, thereby further improving the heat exchange capacity of the work roll. Specifically, one or more first flow passages 208 and second flow passages 214 are formed in the first connecting portion 20 in the axial direction, and one or more first inlet holes 206, first drain grooves 210, first inlet holes 212 and first outlet holes 216 are formed in the radial direction; one or more third flow channels 308 and fourth flow channels 314 are axially formed on the second connecting part 30, and one or more second inlet holes 306, second water discharge grooves 310, second inlet holes 312 and second outlet holes 316 are radially formed; one or more first and second drainage channels 102, 104 are formed between the first and second jackets 106, 108 of the working portion 10.
As shown in fig. 1, the cooling water flows into the first water drainage channel 210 from the first inlet 206 of the first connection portion 20 through the first flow channel 208, and a sloping guide plate 40 (retaining wall) is disposed in the first water drainage channel 210, so that the inflow water of the first connection portion 20 can be reflected into the first water drainage channel 102 through the first through hole 112 via the guide plate 40 via a port communicated with the first water drainage channel 210, thereby reducing pressure loss during the process of turning the cooling water into a right angle. A plurality of drainage channels may be arranged in the working part 10 according to the size of the working part 10 and the requirement of cooling capacity, thereby improving the cooling capacity. Because the first drainage channel 102 is surrounded by the first sleeve body 106, the second sleeve body 108 and the first connecting piece, that is, the drainage channel is an open channel in the processing process, the precision of the processing process can be effectively ensured, the size of the drainage channel and the distance between two adjacent drainage channels can be ensured, and the cooling uniformity can be ensured. Wherein, the both ends of drainage channel are sealed through threaded connection.
During the operation of the twin roll strip casting apparatus, the molten liquid steel in a molten state contacts the surface of the working part 10 and is instantaneously condensed into a condensed strip with a shell, and at this time, the generated heat is taken away by the cooling water flowing through the first water discharge channel 102 below the surface of the working part 10, and the cooling water carrying the heat generated by casting and rolling flows to the second inlet 312 of the second connecting part 30 through the second through hole 114, and finally returns to the water discharge pipe or the water pool through the fourth flow channel 314 and the second outlet 316. The water returned to the drain or sink can be recycled.
Further, the second inlet hole 312 may include a plurality of water collecting grooves, such as a third water collecting groove 318 and a fourth water collecting groove 320, wherein the fourth water collecting groove 320 is an annular groove and is communicated with the plurality of third water collecting grooves 318 and the plurality of fourth flow channels 314, which is beneficial for ensuring that the water discharged through the first water discharging passage 102 is rapidly and uniformly discharged through the plurality of fourth flow channels of the second connecting portion 30, thereby improving the uniformity of cooling.
Similarly, the cooling water flows into the second water drainage channel 310 from the second inlet hole 306 of the second connection portion 30 through the third flow channel 308, and flows into the second water drainage channel 104 through the third through hole 116 via the interface communicated with the second water drainage channel 310, after the cooling water in the second water drainage channel 104 is completely heat exchanged, the cooling water flows into the first inlet hole 212 of the first connection portion 20 via the fourth through hole 118, and flows into the second channel, the first outlet water drainage pipe or the water tank, thereby completing the recycling. Further, the first inlet hole 212 may include a plurality of water collecting grooves, such as a first water collecting groove 218 and a second water collecting groove 220, wherein the second water collecting groove 220 is an annular groove and is communicated with the plurality of first water collecting grooves 218 and the plurality of second flow channels 214, which is beneficial to ensure that the water discharged through the second water discharge passage 104 is rapidly and uniformly discharged through the plurality of second flow channels 214 of the first connection portion 20, thereby improving the uniformity of cooling.
Through the circulation, the whole working roll device 100 can realize a plurality of independent cooling water channels, realize that adjacent drainage channels under the working surface of the working part 10 realize the uniform heat exchange of the working surface through opposite incoming water. Furthermore, the working roll device 100 is effectively ensured to be in a better cooling state in the twin-roll strip casting process, the strip continuous casting plate and strip with uniform cooling capacity is cast and rolled in the uniform casting and rolling process, the defects of the strip caused by casting and rolling are reduced, and the method is suitable for popularization and application.
Claims (9)
1. A work roll apparatus, comprising:
the working part is provided with at least two drainage channels, and the at least two drainage channels comprise a first drainage channel and a second drainage channel;
the first connecting part is arranged at one end of the working part and is provided with at least one first water inlet channel and at least one first water outlet channel, any one first water inlet channel is communicated with the first water drainage channel, and any one first water outlet channel is communicated with the second water drainage channel;
the second connecting part and the first connecting part are arranged at two ends of the working part along the axial direction of the working part, the second connecting part is provided with at least one second water inlet channel and at least one second water outlet channel, any one second water inlet channel is communicated with the second drainage channel, and any one second water outlet channel is communicated with the first drainage channel;
the working part includes: the sleeve comprises a first sleeve body, a second sleeve body and a third sleeve body, wherein the second sleeve body is arranged on one side of the first sleeve body, which is far away from the axis of the first sleeve body, and is distributed at intervals with the first sleeve body;
the working roll device further comprises an adjusting part;
the third cover body includes along the first support cover of axial distribution and second of working portion support the cover, the regulating part is located first support cover with the second supports between the cover, and connect first support cover with the second supports the cover, the work of regulating part makes first support cover is followed the axial of working portion is for the second supports the cover is scalable.
2. The work roll apparatus of claim 1, wherein the work section comprises:
the first sleeve body is provided with a first through hole, a second through hole, a third through hole and a fourth through hole, the first connecting piece is connected with the same end part of the first sleeve body and the second sleeve body, the first sleeve body, the second sleeve body and the first connecting piece are encircled to form the drainage channel, the first drainage channel is communicated with the first through hole and the second through hole, and the second drainage channel is communicated with the third through hole and the fourth through hole.
3. The work roll apparatus of claim 2,
the first water inlet channel is communicated with the first through hole, the second water outlet channel is communicated with the second through hole, the second water inlet channel is communicated with the third through hole, and the first water outlet channel is communicated with the fourth through hole.
4. The work roll apparatus of claim 2,
any one first water inlet channel comprises a first inlet hole, a first flow channel and a first water drainage channel which are communicated, the first inlet hole and the first water drainage channel are arranged along the radial direction of the first connecting part, the first flow channel is arranged along the axial direction of the first connecting part, and the first water drainage channel is communicated with the first through hole;
any one of the first water outlet channels comprises a first inlet hole, a second flow channel and a first outlet hole which are communicated with each other, the first inlet hole and the first outlet hole are arranged along the radial direction of the first connecting part, the second flow channel is arranged along the axial direction of the first connecting part, and the first inlet hole is communicated with the fourth through hole;
any one of the second water inlet channels comprises a second water inlet hole, a third flow channel and a second water drainage groove which are communicated, the second water inlet hole and the second water drainage groove are arranged along the radial direction of the second connecting part, the third flow channel is arranged along the axial direction of the second connecting part, and the second water drainage groove is communicated with the third through hole;
and any second water outlet channel comprises a second inlet hole, a fourth flow channel and a second outlet hole which are communicated, the second inlet hole and the second outlet hole are arranged along the radial direction of the second connecting part, the fourth flow channel is arranged along the axial direction of the second connecting part, and the second inlet hole is communicated with the second through hole.
5. The work roll apparatus of claim 4, further comprising:
the guide plate is obliquely arranged on one side of the first drainage groove close to the working part and is opposite to the first flow channel; and/or
The guide plate is obliquely arranged on one side, close to the working part, of the second drainage groove and is opposite to the third flow channel.
6. The work roll apparatus of claim 5,
the first water drainage groove and/or the second water drainage groove are annular grooves.
7. Work roll apparatus according to any of claims 1 to 6,
the thickness of the working part is 90mm to 120 mm; and/or
The ratio of the cross section of the drainage channel to the cross section of the working part is 0.9 to 1.4; and/or
The first drainage channel and the second drainage channel are alternately distributed along the circumferential direction of the working part; and/or
The number of the first drain passages is equal to that of the second drain passages.
8. A twin roll strip casting apparatus, comprising:
a drive section; and
the work roll apparatus according to any one of claims 1 to 7, the drive portion being connected to the work roll apparatus.
9. A continuous casting production process, comprising: a bale, a tundish, a cloth bag, a rolling mill, ultra-fast cooling, a coiling device, and a work roll device as claimed in any one of the preceding claims 1 to 7, the continuous casting production process being used for direct casting and rolling of molten steel into qualified hot rolled strip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011130785.6A CN112247086B (en) | 2020-10-21 | 2020-10-21 | Working roll device, double-roll thin strip continuous casting equipment and continuous casting production process |
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| CN202011130785.6A CN112247086B (en) | 2020-10-21 | 2020-10-21 | Working roll device, double-roll thin strip continuous casting equipment and continuous casting production process |
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| CN113020274A (en) * | 2021-02-22 | 2021-06-25 | 山西铄金高温材料科技有限公司 | Internal cooling system capable of uniformly reducing temperature of roller |
| CN114559000A (en) * | 2022-03-03 | 2022-05-31 | 中钢设备有限公司 | Thin strip steel continuous casting equipment and crystallization roller thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4502528A (en) * | 1983-04-04 | 1985-03-05 | Allied Corporation | Chilled casting wheel |
| JPH0790335B2 (en) * | 1986-11-17 | 1995-10-04 | 日新製鋼株式会社 | Twin roll type continuous casting machine |
| CN1195599C (en) * | 2000-07-19 | 2005-04-06 | 三菱重工业株式会社 | Dual drum type continuous casting device and method for continuous casting |
| ITUD20010101A1 (en) * | 2001-05-29 | 2002-11-29 | Danieli Off Mecc | ROLLER CRYSTALLIZER FOR A CONTINUOUS CASTING MACHINE |
| CN103639378B (en) * | 2013-12-30 | 2015-08-19 | 青岛云路新能源科技有限公司 | A kind of crystallizer cooled that intersects |
| CN105149534B (en) * | 2015-09-30 | 2018-06-26 | 宝山钢铁股份有限公司 | A kind of method and device for controlling double-roll thin-belt continuous casting roller intensity of cooling |
| CN105215312B (en) * | 2015-09-30 | 2018-04-27 | 宝山钢铁股份有限公司 | A kind of double-roll thin-belt continuous casting roller cooling water flow control method |
| CN105665666B (en) * | 2015-12-31 | 2018-05-04 | 安泰科技股份有限公司 | A kind of cooling roller device uniformly cooled down prepared for amorphous band and method |
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