CN115592082A - Compression roller pressing device and continuous casting system - Google Patents
Compression roller pressing device and continuous casting system Download PDFInfo
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- CN115592082A CN115592082A CN202211346892.1A CN202211346892A CN115592082A CN 115592082 A CN115592082 A CN 115592082A CN 202211346892 A CN202211346892 A CN 202211346892A CN 115592082 A CN115592082 A CN 115592082A
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
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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
- B22D11/14—Plants for continuous casting
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Abstract
The invention provides a compression roller pressing device and a continuous casting system, and relates to the technical field of continuous casting. The pressing roller pressing device can implement pressing control at any position in the longitudinal direction, and has good process adaptability; in addition, any one roller set can independently press down the solidification tail end, so that the process adaptability is further improved; in addition, the reduction strength per unit surface area of the cast slab is improved.
Description
Technical Field
The invention relates to the technical field of continuous casting, in particular to a compression roller pressing device and a continuous casting system.
Background
At present, related equipment of a continuous casting billet solidification tail end heavy pressing technology is still in an exploration and development stage, and a process theory and equipment technology are not mature and shaped. In the prior art, some technical schemes adopt a strategy of increasing the diameter of a first roller to realize more accurate heavy reduction, but the heavy reduction can be implemented only at the position of the first roller, and the reduction of other parts is limited, so that the heavy reduction technology is difficult to be applied to heavy reduction technologies at different solidification tail end positions, the problem of poor technological adaptability is caused, and the heavy reduction technology has certain limitation on different heavy reduction technologies.
Disclosure of Invention
The invention solves the problem of how to improve the process adaptability of the compression roller screwdown device.
In order to solve the above problems, the present invention provides a compression roller pressing device, which includes an upper frame, a lower frame, and at least two roller sets, wherein one of the roller sets includes a driving roller pressing mechanism, a driven roller pressing mechanism, an upper driving roller, a lower driving roller located below the upper driving roller, an upper driven roller, and a lower driven roller located below the upper driven roller, an outer diameter of the upper driving roller is equal to an outer diameter of the lower driving roller located below the upper driving roller, an outer diameter of the upper driven roller is equal to an outer diameter of the lower driven roller, the upper frame is connected to the lower frame, the driving roller pressing mechanism and the driven roller pressing mechanism are connected to the upper frame, the driving roller pressing mechanism and the driven roller pressing mechanism are respectively used for driving the upper driving roller and the upper driven roller to move vertically, the upper driving roller and the upper driven roller are longitudinally spaced from each other, the outer diameter of the upper driving roller is greater than the outer diameter of the upper driven roller, the lower driving roller and the lower driven roller are connected to the lower frame, and the roller sets are longitudinally spaced from each other.
Alternatively, the outer diameters of the upper drive rollers of each of the roller sets are equal, and the outer diameters of the upper driven rollers of each of the roller sets are equal.
Optionally, the drive roller screw-down mechanism includes drive roller screw-down cylinder and drive roller walking beam, driven roller screw-down mechanism includes driven roller screw-down cylinder and driven roller walking beam, the cylinder body of drive roller screw-down cylinder install in go up the frame, the piston rod of drive roller screw-down cylinder connect in the drive roller walking beam, the drive roller walking beam with go up the drive roller and connect, the cylinder body of driven roller screw-down cylinder install in go up the frame, the piston rod of driven roller screw-down cylinder connect in the driven roller walking beam, the driven roller walking beam with go up the driven roller and be connected.
Alternatively, the projected position of the driven roller pressing cylinder on a plane perpendicular to the longitudinal direction is different from that of the driving roller pressing cylinder.
Optionally, drive roller screw-down mechanism still includes the drive roller deflector, driven roller screw-down mechanism still includes the driven roller deflector, the drive roller deflector with the driven roller deflector install respectively in the drive roller walking beam with on the driven roller walking beam, the upper ledge is equipped with drive roller guide way and driven roller guide way, the drive roller deflector with the driven roller deflector respectively in the drive roller guide way with in the driven roller guide way with vertical sliding connection is followed to the upper ledge.
Optionally, the drive roller guide plate includes a first drive roller guide plate and a second drive roller guide plate, the driven roller guide plate includes a first driven roller guide plate and a second driven roller guide plate, the drive roller guide groove includes a first drive roller guide groove and a second drive roller guide groove, the driven roller guide groove further includes a first driven roller guide groove and a second driven roller guide groove, the first drive roller guide plate is installed in the drive roller walking beam along horizontal both ends, and in the first drive roller guide groove with upper frame sliding connection, the second drive roller guide plate is installed in the drive roller walking beam along vertical both ends, and in the second drive roller guide groove with upper frame sliding connection, the first driven roller guide plate is installed in the driven roller walking beam along horizontal both ends, and in the first driven roller guide groove with upper frame sliding connection, the second driven roller guide plate is installed in the driven roller walking beam along vertical both ends, and in the second driven roller guide groove with upper frame sliding connection.
Optionally, the roller pressing device further comprises a first displacement sensor and a second displacement sensor, wherein the first displacement sensor is arranged on the driving roller pressing cylinder, and the second displacement sensor is arranged on the driven roller pressing cylinder.
Optionally, the frame further comprises a pull rod structure, the upper frame abuts against the lower frame, and two ends of the pull rod structure are respectively connected with the upper frame and the lower frame.
Optionally, the upper driving roller, the upper driven roller, the lower driving roller and the lower driven roller adopt a single-core shaft type segmented compression roller structure.
The invention also provides a continuous casting system, which comprises a crystallizer, a lower pressing section and a knockout device, wherein the lower pressing section comprises the compression roller screwdown devices, at least two compression roller screwdown devices are sequentially connected along the casting flow direction, the crystallizer is connected with the compression roller screwdown device at one end of the lower pressing section along the reverse direction of the casting flow direction, and the knockout device is connected with the compression roller screwdown device at one end of the lower pressing section along the positive direction of the casting flow direction.
According to the compression roller pressing device, the upper driving roller and the upper driven roller are longitudinally arranged at intervals, at least two roller sets are longitudinally arranged at intervals, and one driving roller pressing mechanism and one driven roller pressing mechanism respectively control and drive one upper driving roller and one upper driven roller, so that the compression roller pressing device can perform pressing control at any position in the longitudinal direction, namely the upper driving roller at any position in the longitudinal direction can independently perform vertical pressing action, all the roller sets of the compression roller pressing device can form any shape to perform continuous casting work, and the process adaptability is good; meanwhile, the upper driven roller at any position can perform vertical auxiliary pressing-down action along with the action of the upper driving roller, so that any roller set can perform independent heavy pressing on the solidification tail end, and thus, the compression roller pressing device can perform relatively accurate heavy pressing on different solidification tail end positions in different processes, and the process adaptability is further improved; in addition, the outer diameter of the upper driving roller in each roller set is larger than that of the upper driven roller, compared with the scheme that the outer diameters of the upper driving roller and the upper driven roller are equal, the design of the invention can enable the upper driving roller to obtain larger pressing force, and simultaneously, the outer diameter of the upper driven roller is reduced to balance the spacing distance (namely the roller distance) between the adjacent upper driving roller and the upper driven roller, so that the roller set can obtain larger pressure in a smaller roller distance range when heavy reduction is carried out, namely, the reduction strength on the unit surface area of the casting blank is improved.
The continuous casting system can realize the pressing operation under the processes of different solidification tail end positions and the processes of different rolling reduction forming of each roller through at least two pressing roll pressing devices of the pressing section, and has good process adaptability.
Drawings
FIG. 1 is a schematic three-dimensional structure of a roll press apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a roll press apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic three-dimensional structure of a drive roller depressing mechanism and an upper drive roller of an embodiment of the present invention;
FIG. 4 is a schematic three-dimensional structure diagram of a driven roller pressing mechanism and an upper driven roller according to an embodiment of the present invention;
FIG. 5 is a schematic view of a roller arrangement system of a press roller depressing device according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a pull rod structure according to an embodiment of the invention.
Description of the reference numerals:
1. an upper frame; 2. a lower frame; 3. a roller set; 31. a drive roller hold-down mechanism; 311. driving the roller to press down the cylinder; 312. a drive roller walking beam; 313. a drive roller guide plate; 3131. a first drive roller guide plate; 3132. a second drive roller guide plate; 32. a driven roller pressing mechanism; 321. pressing down a cylinder by a driven roller; 322. a driven roller walking beam; 323. a driven roller guide plate; 3231. a first driven roller guide plate; 3232. a second driven roller guide plate; 33. an upper drive roller; 34. a lower drive roller; 35. an upper driven roller; 36. a lower driven roller; 4. a pull rod structure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the coordinate system XYZ provided herein, the X axis represents the right direction in the forward direction, the X axis represents the left direction in the reverse direction, the Y axis represents the front direction, the Y axis represents the rear direction in the reverse direction, the Z axis represents the upper direction in the forward direction, and the Z axis represents the lower direction in the reverse direction. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
The embodiment of the invention provides a compression roller pressing device, which comprises an upper frame 1, a lower frame 2 and at least two roller sets 3, wherein one roller set 3 comprises a driving roller pressing mechanism 31, a driven roller pressing mechanism 32, an upper driving roller 33, a lower driving roller 34 positioned below the upper driving roller 33, an upper driven roller 35 and a lower driven roller 36 positioned below the upper driven roller 35, the outer diameter of the upper driving roller 33 is equal to that of the lower driving roller 34, the outer diameter of the upper driven roller 35 is equal to that of the lower driven roller 36 positioned below the upper driven roller 35, the upper frame 1 is connected with the lower frame 2, the driving roller pressing mechanism 31 and the driven roller pressing mechanism 32 are connected with the upper frame 1, one driving roller pressing mechanism 31 and one driven roller pressing mechanism 32 are respectively used for driving one upper driving roller 33 and one upper driven roller 35 to move vertically, the upper driving roller 33 and the upper driven roller 35 are arranged at intervals in the longitudinal direction, the outer diameter of the upper driving roller pressing mechanism 33 is larger than that of the upper driving roller pressing mechanism 33, the lower driving roller 34 and the lower driven roller 36 are connected with the lower frame 2, and the roller set 3 is arranged at intervals in the longitudinal direction.
Specifically, as shown in fig. 1 to 5, one drive roller pressing mechanism 31 is connected to one upper drive roller 33 and can drive the upper drive roller 33 to move in the vertical direction (i.e., in the direction of the Z axis in the drawing), and one driven roller pressing mechanism 32 is connected to one upper driven roller 35 and can drive the upper driven roller 35 to move in the vertical direction (i.e., in the direction of the Z axis in the drawing), and further includes a lower drive roller 34 disposed below the upper drive roller 33 (i.e., in the direction opposite to the Z axis in the drawing) and a lower driven roller 36 disposed below the upper driven roller 35 (i.e., in the direction opposite to the Z axis in the drawing), so that one roller group 3 can be formed. Among them, adjacent upper driving rollers 33 and upper driven rollers 35 are provided with an interval therebetween, and correspondingly adjacent lower driving rollers 34 and lower driven rollers 36 are provided with an interval therebetween (and have a roll gap equal to that of the upper driving rollers 33 and the upper driven rollers 35). The drive roller pressing mechanism 31 is connected to the upper frame 1, the driven roller pressing mechanism 32 is connected to the upper frame 1, and both drive the upper drive roller 33 and the upper driven roller 35 to perform a pressing operation (i.e., a movement in the direction opposite to the Z axis in the drawing), respectively, and the lower drive roller 34 and the lower driven roller 36 are connected to the lower frame 2.
Specifically, the outer diameter of the upper driving roller 33 may be set to 400mm to 420mm, the single roller bearing capacity thereof may be 3600KN to 4000KN, the outer diameter of the upper driven roller 35 may be set to 350mm to 370mm, and the single roller bearing capacity thereof may be 2500KN to 2800KN, so that the spacing distance (roller pitch) between the adjacent upper driving roller 33 and upper driven roller 35 may be controlled to 400mm to 420mm.
Illustratively, referring to fig. 5, there are three of the roll presses (i.e., HS1, HS2, and HS3 in the drawing), and for one of the roll presses, there are three sets of rolls 3 spaced apart along the Y axis in the drawing, and the operation of the roll press is illustratively described as follows: when the solidification end of the cast slab moves to the first roll group 3 from the front to the back of the roll reduction device HS1 in the casting flow direction (determined by the direction of the cast slab movement in the actual casting process, in this embodiment, the positive direction of the Y axis), the first roll group 3 can perform the heavy reduction for the solidification end position; when the solidification end position of the cast slab moves backwards (i.e. the positive direction of the Y axis in the figure) to the second roll group 3 of the compression roll reduction device HS1 due to the process change, the second roll group 3 can perform the heavy reduction on the solidification end position; by analogy, the working process of the compression roller pressing device when the solidification tail end moves forwards (namely the direction opposite to the Y axis in the figure) can be obtained, and the description is omitted.
It should be noted that, the spacing distance between the adjacent upper driving roller 33 and upper driven roller 35, and the spacing distance between the adjacent roller sets 3, can be specifically designed according to the corresponding process, and are not specifically limited herein, generally, the roller spacing of each pair of upper driving roller 33 and upper driven roller 35 is equal, and the spacing of each pair of adjacent roller sets 3 is equal, so that the pressing range of each roller set 3 of the roll pressing device can be the same, so as to facilitate the practical application; in addition, the outer diameter of each upper driving roller 33 corresponding to each roller set 3 may not be equal, and the outer diameter of each upper driven roller 35 corresponding to each roller set 3 may also not be equal, and may be specifically designed according to the corresponding process, and is not particularly limited herein.
According to the press roll screwdown device, the upper driving roll 33 and the upper driven roll 35 are longitudinally arranged at intervals, at least two roll sets 3 are longitudinally arranged at intervals, and one driving roll screwdown mechanism 31 and one driven roll screwdown mechanism 32 respectively control and drive one upper driving roll 33 and one upper driven roll 35, so that any position of the press roll screwdown device in the longitudinal direction can be subjected to screwdown control, namely the upper driving roll 33 at any position in the longitudinal direction can independently perform vertical screwdown action, and all the roll sets 3 of the press roll screwdown device can form any shape to perform continuous casting work, and the process adaptability is good; meanwhile, the upper driven rollers 35 at any position can perform vertical auxiliary pressing-down action along with the action of the upper driving rollers 33, so that any one roller set 3 can perform independent heavy pressing on the solidification tail end, and thus, the compression roller pressing device can perform relatively accurate heavy pressing on different solidification tail end positions in different processes, and further improves the process adaptability; in addition, the outer diameter of the upper driving roller 33 in each roller set 3 is larger than that of the upper driven roller 35, compared with the scheme that the outer diameters of the upper driving roller 33 and the upper driven roller 35 are equal, the design of the invention can enable the upper driving roller 33 to obtain larger pressing force, and simultaneously, the outer diameter of the upper driven roller 35 is reduced to balance the spacing distance (namely the roller distance) between the adjacent upper driving roller 33 and the adjacent upper driven roller 35, so that when the roller set 3 carries out heavy reduction, larger pressure can be obtained in a smaller roller distance range, namely, the reduction strength on the unit surface area of the casting blank is improved.
Alternatively, the outer diameters of the upper driving rollers 33 of each of the roller sets 3 are equal, and the outer diameters of the upper driven rollers 35 of each of the roller sets 3 are equal.
Specifically, with reference to fig. 5, with the platen roller press HS1, the upper drive rollers 33 of the three roller sets 3 have the same outer diameter, the upper driven rollers 35 of the three roller sets 3 have the same outer diameter, and since the upper and lower opposite drive rollers 33 and 34 have the same outer diameter, and the upper and lower opposite driven rollers 35 and 36 have the same outer diameter, the lower drive rollers 34 of the three roller sets 3 also have the same outer diameter, the lower driven rollers 36 of the three roller sets 3 also have the same outer diameter, and the outer diameter of the upper drive rollers 33 is larger than that of the upper driven rollers 35.
In this way, the roll outer diameter parameters of each roll set 3 are the same, so that the rolling reduction range of each roll set 3 under heavy pressing is the same, the problem that the corresponding roll set 3 after the position change of the solidification tail end cannot meet the rolling reduction requirement of the corresponding roll set 3 before the position change is avoided, and the applicability to the process with different solidification tail end positions is improved.
Optionally, the driving roller pressing mechanism 31 includes a driving roller pressing cylinder 311 and a driving roller walking beam 312, the driven roller pressing mechanism 32 includes a driven roller pressing cylinder 321 and a driven roller walking beam 322, the cylinder body of the driving roller pressing cylinder 311 is installed in the upper frame 1, the piston rod of the driving roller pressing cylinder 311 is connected to the driving roller walking beam 312, the driving roller walking beam 312 is connected to the upper driving roller 33, the cylinder body of the driven roller pressing cylinder 321 is installed in the upper frame 1, the piston rod of the driven roller pressing cylinder 321 is connected to the driven roller walking beam 322, and the driven roller walking beam 322 is connected to the upper driven roller 35.
Specifically, as shown in fig. 1 to 4, a pair of driving roller lower cylinders 311 arranged at intervals in the transverse direction (i.e., the positive and negative directions of the X axis in the drawing) is hinged to the upper frame 1 through a cylinder block and connected to the upper end of the driving roller movable beam 312 through a piston rod, the length direction of the rectangular block-shaped driving roller movable beam 312 is arranged along the X axis in the drawing, and the lower end of the driving roller movable beam 312 is connected to the upper driving roller 33; a pair of driven roller lower cylinders 321 arranged at intervals in the transverse direction (i.e., the positive and negative directions of the X axis in the figure) is hinged to the upper frame 1 through a cylinder body and is linked with the upper end of the driven roller movable beam 322 through a piston rod, the length direction of the rectangular block-shaped driven roller movable beam 322 is arranged along the X axis in the figure, and the lower end of the driven roller movable beam 322 is connected with the upper driven roller 35.
In this way, the driving roller pressing cylinder 311 and the driven roller pressing cylinder 321 can provide power meeting the requirement, and the driving roller movable beam 312 and the driven roller movable beam 322 can make the pressure uniformly distributed on the corresponding upper driving roller 33 and upper driven roller 35, so as to ensure the pressing effect on the casting blank.
Alternatively, the projection position of the driven roller pressing cylinder 321 and the driving roller pressing cylinder 311 on a plane perpendicular to the longitudinal direction is different.
Specifically, as shown in fig. 1 and fig. 2, three driven roller pressing cylinders 321 located on the opposite side of the X axis in fig. 2 are provided, the three driven roller pressing cylinders 321 are arranged at intervals along a straight line parallel to the Y axis in the drawing, three driving roller pressing cylinders 311 located on the opposite side of the X axis in fig. 2 are provided, the three driving roller pressing cylinders 311 are arranged at intervals along another straight line parallel to the Y axis in the drawing, a certain distance is provided between a straight line where the three driven roller pressing cylinders 321 are located and a straight line where the three driving roller pressing cylinders 311 are located, so that projection positions (i.e., positions after respective central positions of the driving roller pressing cylinders 311 and the driven roller pressing cylinders 321 are projected) of the driving roller pressing cylinders 311 and the driven roller pressing cylinders 321 on a plane perpendicular to the longitudinal direction (i.e., an XZ plane perpendicular to the Y axis in fig. 1 and fig. 2) are different, and the driving roller pressing cylinders 311 and the driven roller pressing cylinders 321 located on the positive side of the X axis in the drawing are arranged symmetrically to the X axis, and are not arranged again.
In this way, compared with the scheme that the projection positions of the driving roller pressing cylinder 311 and the driven roller pressing cylinder 321 on the plane perpendicular to the longitudinal direction are overlapped, the driving roller pressing cylinder 311 and the driven roller pressing cylinder 321 of the present invention are staggered with each other, so that the spacing distance (roll distance) between the adjacent upper driving roller 33 and the adjacent upper driven roller 35 can be further reduced under the condition that the pressing amount of the roller pressing device is ensured, and the pressing action range of each roller set 3 is further reduced, so as to realize more accurate heavy pressing for the solidification end position.
Optionally, the driving roller pressing mechanism 31 further includes a driving roller guide plate 313, the driven roller pressing mechanism 32 further includes a driven roller guide plate 323, the driving roller guide plate 313 and the driven roller guide plate 323 are respectively mounted on the driving roller movable beam 312 and the driven roller movable beam 322, the upper frame 1 is provided with a driving roller guide groove and a driven roller guide groove, and the driving roller guide plate 313 and the driven roller guide plate 323 are respectively in the driving roller guide groove and the driven roller guide groove and are vertically and slidably connected with the upper frame 1.
Specifically, as shown in fig. 3 and 4, the driving roller guide plate 313 and the driven roller guide plate 323 are respectively mounted on the outer surface of the driving roller movable beam 312 and the outer surface of the driven roller movable beam 322 by fasteners, a driving roller guide groove and a driven roller guide groove (not shown) along the Z-axis in the figure are formed in the upper frame 1, and the driving roller guide plate 313 and the driven roller guide plate 323 are respectively slidably connected with the upper frame 1 in the vertical direction (i.e., the Z-axis direction in the figure) in the driving roller guide groove and the driven roller guide groove.
In this way, the drive roller depressing mechanism 31 and the driven roller depressing mechanism 32 realize a guide function by the drive roller guide plate 313 and the driven roller guide plate 323, respectively.
Optionally, the driving roller guide plate 313 includes a first driving roller guide plate 3131 and a second driving roller guide plate 3132, the driven roller guide plate 323 includes a first driven roller guide plate 3231 and a second driven roller guide plate 3232, the driving roller guide groove includes a first driving roller guide groove and a second driving roller guide groove, the driven roller guide groove further includes a first driven roller guide groove and a second driven roller guide groove, the first driving roller guide plate 3131 is installed at both ends of the driving roller movable beam 312 in the transverse direction and in the first driving roller guide groove with the upper frame 1 sliding connection, the second driving roller guide plate 3132 is installed at both ends of the driving roller movable beam 312 in the longitudinal direction and in the second driving roller guide groove with the upper frame 1 sliding connection, the first driven roller guide plate 3231 is installed at both ends of the driven roller movable beam 322 in the transverse direction and in the first driven roller guide groove with the upper frame 1 sliding connection, the second driven roller guide plate 3232 is installed at both ends of the driven roller movable beam 322 in the longitudinal direction and in the second driven roller guide groove with the upper frame 1 sliding connection.
Specifically, as shown in fig. 3 and 4, two first driving roller guide plates 3131 are symmetrically disposed at both ends of the driving roller movable beam 312 in the lateral direction (i.e., X-axis in the drawing), two of the four second driving roller guide plates 3132 are disposed at one end of the driving roller movable beam 312 in the longitudinal direction (i.e., Y-axis in the drawing), and the other two are disposed at the other end of the driving roller movable beam 312 in the longitudinal direction, and the first and second driving roller guide grooves are opened at corresponding positions on the upper frame 1 in the vertical direction (i.e., Z-axis in the drawing) to be slidably connected to the first and second driving roller guide plates 3131 and 3132. The arrangement of the first driven roller guide plate 3231 and the second driven roller guide plate 3232, and the arrangement of the first driven roller guide groove and the second driven roller guide groove are similar to those described above, and are not described again.
In this manner, the guiding performance of the drive roller guide plate 313 and the driven roller guide plate 323 is further improved by arranging the first drive roller guide plate 3131 and the second drive roller guide plate 3132 at both ends in the lateral direction and both ends in the longitudinal direction of the drive roller walking beam 312, respectively, and by arranging the first driven roller guide plate 3231 and the second driven roller guide plate 3232 at both ends in the lateral direction and both ends in the longitudinal direction of the driven roller walking beam 322, respectively.
Optionally, a first displacement sensor provided to the driving roller pressing cylinder 311 and a second displacement sensor provided to the driven roller pressing cylinder 321 are further included.
In this way, the first displacement sensor is disposed in the cylinder of the driving roller pressing cylinder 311, the second displacement sensor is disposed in the cylinder of the driven roller pressing cylinder 321, and the first displacement sensor and the second displacement sensor can detect the displacement of the respective piston rods of the driving roller pressing cylinder 311 and the driven roller pressing cylinder 321, so as to accurately control the rolling amount.
Optionally, the frame further comprises a pull rod structure 4, the upper frame 1 abuts against the lower frame 2, and two ends of the pull rod structure 4 are respectively connected with the upper frame 1 and the lower frame 2.
Specifically, as shown in fig. 1, 2 and 6, the lower surface of the upper frame 1 and the upper surface of the lower frame 2 abut against each other, and through holes respectively formed in the upper frame 1 and the lower frame 2 are aligned, the pull rod structures 4 may be bolt and nut assemblies, bolts penetrate through the through holes of the upper frame 1 and penetrate through the through holes of the lower frame 2, the upper frame 1 and the lower frame 2 are connected in a pre-tightening manner by screwing nuts and bolts and setting a certain pre-tightening force, such pull rod structures 4 are respectively provided in three on both sides of the press roller pressing device along the X axis in the figure, and the three pull rod structures 4 on one side of the X axis in the figure are equally spaced along the Y axis in the figure. Thus, after the compression roller pressing device bears the working load F, the residual pretightening force of the connection of the upper frame 1 and the lower frame 2 is F 1 The total tension of the pull rod structure 4 is F 2 The relation is as follows:
F 2 ＝F 1 +F
the following relationships can be derived by analysis:
wherein: f 0 -bolt pretension;
C b -bolt stiffness;
C m -stiffness of the connected member;
C b /(C b +C m ) -bolt relative stiffness;
from the above formula, the relative rigidity C of the bolt b /(C b +C m ) The smaller, F 2 The smaller the relative stiffness can be obtained by using the elongated tension rod structure 4 (i.e., the bolt), thereby reducing the deformation of the roll press apparatus when it is subjected to a working load and reducing the stress of the tension rod structure 4.
Alternatively, the upper driving roller 33, the upper driven roller 35, the lower driving roller 34, and the lower driven roller 36 employ a single-core shaft type segmented nip roller structure.
Specifically, as shown in fig. 3 and 4, the upper driving roller 33, the upper driven roller 35, the lower driving roller 34, and the lower driven roller 36 in this embodiment all use single-core shaft type four-segment rollers (different numbers of segments may be selected according to the width of the casting blank cross section), and water is passed through the roller bearing seat and the inside of the mandrel to cool.
Therefore, compared with the combined mandrel type sectional roller and the full-break type sectional roller, the single-mandrel type sectional pressing roller structure adopted by the invention has the advantages that the contact supporting length of the casting blank is longer, the cooling uniformity is better, and the reduction quality is favorably controlled.
The invention also provides a continuous casting system, which comprises a crystallizer, a lower pressing section and a knockout device, wherein the lower pressing section comprises the compression roller screwdown devices, at least two compression roller screwdown devices are sequentially connected along the casting flow direction, the crystallizer is connected with the compression roller screwdown device at one end of the lower pressing section along the reverse direction of the casting flow direction, and the knockout device is connected with the compression roller screwdown device at one end of the lower pressing section along the positive direction of the casting flow direction.
Specifically, as shown in fig. 5, the ingot mold is discharged and conveyed to the roll reduction devices of the reduction section along the casting flow direction (the casting flow direction is the Y-axis forward direction in the drawing, and can be designed according to the practice), a plurality of roll reduction devices are arranged end to end (three roll reduction devices are exemplarily shown in the drawing, and can be designed according to the practice), the cast slab is reduced by a plurality of roll sets 3 formed by an upper driving roll 33, a lower driving roll 34, and the like, and the cast slab after the reduction process is conveyed to the discharge device.
The continuous casting system can realize the pressing operation under the processes of different solidification tail end positions and the processes of different rolling reduction forming of each roller through at least two pressing roll pressing devices of the pressing section, and has good process adaptability.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A press roller depressing device, comprising an upper frame (1), a lower frame (2) and at least two roller groups (3), one of said roller groups (3) comprising a drive roller depressing mechanism (31), a follower roller depressing mechanism (32), an upper drive roller (33), a lower drive roller (34) positioned below said upper drive roller (33), an upper follower roller (35) and a lower follower roller (36) positioned below said upper follower roller (35), the outer diameter of said upper drive roller (33) being equal to the outer diameter of said lower drive roller (34) positioned below said upper drive roller (33), said upper follower roller (35) being equal to the outer diameter of said lower follower roller (36), said upper frame (1) being connected to said lower frame (2), said drive roller depressing mechanism (31) and said follower roller depressing mechanism (32) being connected to said upper frame (1), one of said drive roller depressing mechanism (31) and one of said follower roller depressing mechanism (32) being respectively for driving one of said upper drive roller (33) and one of said upper follower roller (35) in vertical movement, the adjacent of said upper drive roller (33) and said upper drive roller (35) being longitudinally spaced apart from each other of said upper follower roller (35) and said follower roller (35) being larger than the outer diameter of said upper follower roller (33), the lower driving roller (34) and the lower driven roller (36) are connected to the lower frame (2), and the roller sets (3) are arranged at intervals in the longitudinal direction.
2. A roll press according to claim 1, characterized in that the outer diameter of the upper driving roll (33) of each of the roll sets (3) is equal and the outer diameter of the upper driven roll (35) of each of the roll sets (3) is equal.
3. The roll press down apparatus according to claim 1, wherein the drive roll press down mechanism (31) includes a drive roll press down cylinder (311) and a drive roll walking beam (312), the driven roll press down mechanism (32) includes a driven roll press down cylinder (321) and a driven roll walking beam (322), the cylinder body of the drive roll press down cylinder (311) is mounted on the upper frame (1), the piston rod of the drive roll press down cylinder (311) is connected to the drive roll walking beam (312), the drive roll walking beam (312) is connected to the upper drive roll (33), the cylinder body of the driven roll press down cylinder (321) is mounted on the upper frame (1), the piston rod of the driven roll press down cylinder (321) is connected to the driven roll walking beam (322), and the driven roll walking beam (322) is connected to the upper driven roll (35).
4. A press roller depressing device according to claim 3, wherein the projected positions of the driven roller depressing cylinder (321) and the driving roller depressing cylinder (311) on a plane perpendicular to the longitudinal direction are different.
5. The platen roller depressing device according to claim 3, wherein the driving roller depressing mechanism (31) further includes a driving roller guide plate (313), the driven roller depressing mechanism (32) further includes a driven roller guide plate (323), the driving roller guide plate (313) and the driven roller guide plate (323) are respectively mounted on the driving roller movable beam (312) and the driven roller movable beam (322), the upper frame (1) is provided with a driving roller guide groove and a driven roller guide groove, and the driving roller guide plate (313) and the driven roller guide plate (323) are respectively slidably connected to the upper frame (1) in the driving roller guide groove and the driven roller guide groove in a vertical direction.
6. The roll press apparatus according to claim 5, wherein said drive roll guide plate (313) includes a first drive roll guide plate (3131) and a second drive roll guide plate (3132), said follower roll guide plate (323) includes a first follower roll guide plate (3231) and a second follower roll guide plate (3232), said drive roll guide groove includes a first drive roll guide groove and a second drive roll guide groove, said follower roll guide groove further includes a first follower roll guide groove and a second follower roll guide groove, said first drive roll guide plate (3131) is installed at both ends of said drive roll movable beam (312) in the transverse direction and is installed in said first drive roll guide groove and is slidably connected to said upper frame (1), said second drive roll guide plate (3132) is installed at both ends of said drive roll movable beam (312) in the longitudinal direction and is slidably connected to said upper frame (1) in said second drive roll guide groove, said first follower roll guide plate (3231) is installed at both ends of said movable beam (322) in the transverse direction and is slidably connected to said second drive roll guide groove and is installed at both ends of said follower roll guide plate (321) in said second drive roll guide groove and is installed at said second roll guide groove.
7. The roller press down device according to claim 3, further comprising a first displacement sensor provided to the driving roller press down cylinder (311) and a second displacement sensor provided to the driven roller press down cylinder (321).
8. The platen press according to claim 1, further comprising a tie bar structure (4), wherein the upper frame (1) abuts against the lower frame (2), and both ends of the tie bar structure (4) are respectively connected with the upper frame (1) and the lower frame (2).
9. A press roller depressing device according to claim 1, wherein the upper driving roller (33), the upper driven roller (35), the lower driving roller (34) and the lower driven roller (36) employ a single-core shaft type segmented press roller structure.
10. A continuous casting system comprising a mold, a reduction section and a knockout, the reduction section comprising the roll screw-down apparatuses as claimed in claims 1 to 9, at least two of the roll screw-down apparatuses being connected in series in the casting direction, the mold being connected to the roll screw-down apparatus at an end of the reduction section in the reverse direction of the casting direction, the knockout being connected to the roll screw-down apparatus at an end of the reduction section in the forward direction of the casting direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211346892.1A CN115592082A (en) | 2022-10-31 | 2022-10-31 | Compression roller pressing device and continuous casting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211346892.1A CN115592082A (en) | 2022-10-31 | 2022-10-31 | Compression roller pressing device and continuous casting system |
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| Publication Number | Publication Date |
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| CN115592082A true CN115592082A (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211346892.1A Pending CN115592082A (en) | 2022-10-31 | 2022-10-31 | Compression roller pressing device and continuous casting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079259A (en) * | 2023-04-11 | 2023-05-09 | 苏州华远金属科技有限公司 | Laser longitudinal continuous cutting device for multi-coil metal foil |
-
2022
- 2022-10-31 CN CN202211346892.1A patent/CN115592082A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079259A (en) * | 2023-04-11 | 2023-05-09 | 苏州华远金属科技有限公司 | Laser longitudinal continuous cutting device for multi-coil metal foil |
| CN116079259B (en) * | 2023-04-11 | 2023-08-18 | 苏州华远金属科技有限公司 | Laser longitudinal continuous cutting device for multi-coil metal foil |
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