A device for producing an r1 work roll

Abstract

The utility model provides a kind of R1 work roll preparation device, including the cutting water board main part that is guided to the cooling water of roll, the top has mounting surface, located cutting water board main part's one side has the flow guide inclined plane, located cutting water board main part side part is additionally provided with the side wall being connected with mounting surface and flow guide inclined plane, located flow guide inclined plane surface is provided with groove, the resistance adjusting mechanism that the volume of groove is adjusted is provided on cutting water board main part.The utility model is transformed to the flow guide inclined plane of cutting water board main part, water quantity in the roll surface is obviously increased, so that the on-line roll is fully cooled, by adjusting the service life of roll from three weeks to two weeks, after shortening the service life of roll, the roll surface is obviously improved, and the plate surface scratch caused by hot etching pit defect is effectively inhibited.

Description

Technical Field

[0001] This utility model relates to the field of roll manufacturing technology, and in particular to an R1 work roll manufacturing device. Background Technology

[0002] In the study of hot pitting on the surface of rolls, the service life of rolls on the mill needs to be determined based on the rolling varieties, rolling loads, and roll performance of each production line. Excessively long rolling cycles can easily lead to fatigue cracks on the roll surface in the later stages of use, which significantly impacts the safety of roll operation. Originally, the service life of R1 work rolls was three weeks, and the probability of hot pitting on the roll surface was higher in the later stages of this period. Based on the principle of comparative testing, under approximately the same rolling conditions, shortening the service life slightly improved the hot pitting phenomenon.

[0003] An investigation of the roll cooling water at the R1 stand revealed differences in the amount and effectiveness of the cooling water on the upper and lower rolls. The upper roll had less cooling water, while the lower roll had more, which aligns with the fact that heat erosion pits only appeared on the upper roll. Furthermore, for rolling grades requiring higher initial rolling temperatures, the poor roll cooling effect led to the formation of heat erosion pits on the roll surface.

[0004] The main cause of the R1 hot erosion pits is that the slab exit temperature is too high. During the R1 stand rolling, the high roughing temperature burns the roll surface, causing local decarburization of the roll surface. In addition, the poor cooling effect of the roll cooling water leads to the formation of hot erosion pits on the roll surface.

[0005] The R1 work roll is made of hot tool steel. An excessively long roll replacement cycle (replacing it every three weeks) leads to severe fatigue cracks in the later stages of use. Furthermore, ineffective cooling water in the mill frame (due to its planar structure) causes localized burning and decarburization on the R1 work roll surface. The formation of fatigue cracks, coupled with the localized burning, results in hot pitting defects in the affected area, ultimately leading to severe scratches on the strip. Therefore, excessively long roll service life and inadequate cooling water in the mill line are the main causes of hot pitting defects on the roll surface. Utility Model Content

[0006] In order to solve the technical problems of excessively long service life of rolls and unsatisfactory cooling effect of rolling line cooling water in the prior art, this utility model provides an R1 work roll preparation device.

[0007] The R1 work roll preparation device provided by this utility model adopts the following technical solution: An R1 work roll preparation apparatus includes a water-cutting plate body for guiding the flow of cooling water for the roll. The water-cutting plate body has a mounting surface on its top and a guiding slope on one side. A side wall connected to the mounting surface and the guiding slope is also provided on the side of the water-cutting plate body. A groove is provided on the surface of the guiding slope. A resistance adjustment mechanism for adjusting the volume of the groove is provided on the water-cutting plate body.

[0008] By adopting the above technical solution: the cooling water of the roll is guided by the guide slope, the groove can prevent the cooling water from flowing out from the edge of the water-cutting plate body, the water volume on the surface of the water-cutting plate body is increased by setting the groove, so that the cooling water can fully cool the roll during the online use of the roll, and the blocking strength of the groove can be adjusted by setting the resistance adjustment mechanism.

[0009] Furthermore, mounting holes are provided on the upper part of the mounting surface.

[0010] By adopting the above technical solution, the main body of the water-cutting plate is installed in the position where the roller needs to be cooled by bolting it inside the mounting hole.

[0011] Furthermore, multiple grooves are evenly distributed on the surface of the guide slope, and the upper part of the grooves extends to the upper part of the mounting surface.

[0012] By adopting the above technical solution, the grooves can prevent cooling water from flowing out from the edge of the cutting plate body, and increase the amount of water on the surface of the cutting plate body, thereby improving the cooling effect of the roll cooling water.

[0013] Furthermore, a chute penetrating the main body of the water-cutting plate is provided on the side wall, and a baffle groove is provided on the side wall of the chute, the baffle groove being connected to the chute.

[0014] By adopting the above technical solution, installation space can be provided for the installation of the resistance adjustment mechanism.

[0015] Furthermore, the resistance adjustment mechanism includes a connecting plate slidably disposed inside the groove, and a plurality of blocks protruding upward from the surface of the connecting plate, the blocks being slidably disposed inside the groove.

[0016] By adopting the above technical solution: by moving the connecting plate to move the block from the groove to the channel, the volume of the channel is reduced; or by moving the connecting plate to move the block from the channel to the groove, the volume of the channel is increased, thereby adjusting the strength of the channel in blocking the flow of cooling water to the edge of the water-cutting plate body.

[0017] Furthermore, a pull ring is connected to the end of the connecting plate.

[0018] By adopting the above technical solution, the volume of the groove can be adjusted by pulling the pull ring during use.

[0019] Furthermore, a fixing component is provided on the side of the main body of the water-cutting plate to fix the moving position of the connecting plate.

[0020] By adopting the above technical solution, the moving position of the connecting plate can be fixed by setting a fixing component.

[0021] Furthermore, the fixing component includes a support plate fixedly mounted on the side wall, an elastic protrusion welded to the upper part of the support plate, and a plurality of fixing grooves that cooperate with the elastic protrusion at the bottom of the connecting plate.

[0022] By adopting the above technical solution, the elastic tabs are engaged in the corresponding fixing groove at the bottom of the connecting plate by moving the connecting plate, thereby fixing the position of the connecting plate. Users can adjust the blocking strength of the groove according to actual needs during use. This structure improves the practicality of the device.

[0023] In summary, the beneficial effects of this utility model are as follows: 1. This utility model, by setting grooves, can prevent cooling water from flowing out from the edge of the cutting plate body, increasing the amount of water on the surface of the cutting plate body. This allows the cooling water to fully cool the roll during online use, avoiding the phenomenon of scalding due to insufficient cooling in local areas of the roll surface. It effectively solves the problem of heat erosion pits on the roll surface caused by poor cooling effect of the roll cooling water.

[0024] By modifying the guide slope of the main body of the water-cutting plate, the amount of water flowing on the roller surface of the roll is significantly increased, which allows the roll to be fully cooled online. By adjusting the service cycle of the roll from three weeks to two weeks, the surface of the roll after the machine is significantly improved, and the scratches on the plate surface caused by hot erosion pit defects are effectively suppressed.

[0025] 2. By incorporating a resistance adjustment mechanism, pulling the ring outward during use moves the connecting plate and the stop block outward, thus moving the stop block into the groove. This reduces the groove's volume and resistance, decreasing the water flow to the surface of the cutting plate. Conversely, pulling the ring in the opposite direction moves the connecting plate and the stop block inward, increasing the groove's volume and resistance, thus increasing the water flow to the cutting plate's surface. This structure alters the groove's resistance to cooling water flow towards the edge of the cutting plate, thereby changing the amount of water on its surface. A fixing component engages the elastic tabs with the corresponding fixing grooves on the bottom of the connecting plate, quickly fixing the connecting plate's position. Users can adjust the groove's resistance according to their needs, enhancing the device's practicality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of part A in the middle; Figure 3 This is a cross-sectional view of the mounting hole of this utility model; Figure 4 This is an exploded view of the present invention; Figure 5 This utility model Figure 4 Enlarged view of part B in the middle; Figure 6 This is a schematic diagram of the fixing groove structure of this utility model.

[0027] In the diagram: 1. Water-cutting plate body; 2. Mounting hole; 3. Groove; 4. Resistance adjustment mechanism; 5. Slide groove; 6. Fixing component; 11. Mounting surface; 12. Guide slope; 13. Side wall; 21. Countersunk hole; 22. Waist-shaped hole; 41. Connecting plate; 42. Pull ring; 51. Baffle groove; 61. Support plate; 62. Elastic protrusion; 411. Stop block; 412. Fixing groove. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0029] The first embodiment of this utility model, referred to... Figures 1-3 As shown, an R1 work roll manufacturing apparatus includes a water-cutting plate body 1 for guiding the flow of roll cooling water. The top of the water-cutting plate body 1 has a mounting surface 11, and a guiding slope 12 is located on one side of the water-cutting plate body 1. The guiding slope 12 guides the flow of roll cooling water. A side wall 13 connected to the mounting surface 11 and the guiding slope 12 is also provided on the side of the water-cutting plate body 1. Specifically, a mounting hole 2 is provided on the upper part of the mounting surface 11. The water-cutting plate body 1 is installed at the position where the roll needs to be cooled by bolts locked inside the mounting hole 2. Multiple grooves 3 are evenly distributed on the surface of the guiding slope 12. The upper part of the grooves 3 extends to the upper part of the mounting surface 11. The grooves 3 can prevent the cooling water from flowing out from the edge of the water-cutting plate body 1. The grooves 3 increase the water volume on the surface of the water-cutting plate body 1, thereby improving the cooling effect of the roll cooling water.

[0030] In use, the water-cutting plate body 1 is installed at the position where the roll needs to be cooled by bolts. The groove 3 prevents the cooling water from flowing out from the edge of the water-cutting plate body 1, increases the amount of water on the surface of the water-cutting plate body 1, and ensures that the cooling water fully cools the roll during online use. This avoids the phenomenon of scalding caused by insufficient cooling in some areas of the roll surface, and effectively solves the problem of heat erosion pits on the roll surface caused by poor cooling effect of the roll cooling water.

[0031] After modifying the guide slope 12 of the main body 1 of the water-cutting plate, the amount of water flowing on the roll surface is significantly increased (cooling water in the planar structure is prone to flow away from the edge), so that the roll is fully cooled online; the roll service cycle is adjusted from three weeks to two weeks. By shortening the roll service cycle, the roll surface after the machine is significantly improved, and the scratches on the plate surface caused by hot erosion pit defects are effectively suppressed.

[0032] The second embodiment of this utility model is described below. Figure 1 The water-cutting plate body 1 is provided with a resistance adjustment mechanism 4 for adjusting the volume of the groove 3. By moving the resistance adjustment mechanism 4, the volume of the groove 3 can be increased or decreased, thereby adjusting the strength of the groove 3 in blocking the cooling water from flowing to the edge of the water-cutting plate body 1.

[0033] Specifically, refer to Figure 5 As shown, a sliding groove 5 penetrating the main body 1 of the water-cutting plate is provided on the side wall 13, and a baffle groove 51 is provided on the side wall of the groove 3, the baffle groove 51 being connected to the sliding groove 5. (Refer to...) Figure 2 , Figure 4 and Figure 5 As shown, the resistance adjustment mechanism 4 includes a connecting plate 41 slidably disposed inside the groove 5. Multiple blocks 411 protrude upwards from the surface of the connecting plate 41. These blocks 411 are slidably disposed inside the groove 51. By moving the connecting plate 41, the blocks 411 can be moved from the groove 51 into the channel 3, or vice versa, thereby reducing or increasing the volume of the channel 3. This adjusts the strength of the channel 3 in blocking cooling water flow towards the edge of the water-cutting plate body 1. Preferably, a pull ring 42 is connected to the end of the connecting plate 41, allowing adjustment of the channel 3's volume by pulling the pull ring 42.

[0034] Furthermore, refer to Figure 5 and Figure 6As shown, a fixing component 6 is provided on the side of the main body 1 of the water-cutting plate to fix the moving position of the connecting plate 41. Specifically, the fixing component 6 includes a support plate 61 fixedly mounted on the side wall 13, an elastic protrusion 62 welded to the upper part of the support plate 61, and multiple fixing grooves 412 at the bottom of the connecting plate 41 that cooperate with the elastic protrusion 62. In use, the connecting plate 41 is moved so that the elastic protrusion 62 engages with the corresponding fixing groove 412 at the bottom of the connecting plate 41 under its own elastic force, thereby fixing the position of the connecting plate 41. By setting the fixing component 6, the elastic protrusion 62 in the fixing component 6 can be engaged with the corresponding fixing groove 412 at the bottom of the connecting plate 41 during use, so that the moving position of the connecting plate 41 can be quickly fixed.

[0035] When using this device, by pulling the pull ring 42 in the resistance adjustment mechanism 4 outward, the connecting plate 41 moves the stop block 411 outward, thereby moving the stop block 411 into the groove 3, reducing the volume of the groove 3, and thus reducing the resistance of the groove 3, thereby reducing the water flow on the surface of the water-cutting plate body 1. By pulling the pull ring 42 in the opposite direction, the connecting plate 41 moves the stop block 411 inward, thereby moving the stop block 411 into the groove, increasing the volume of the groove 3, and thus increasing the resistance of the groove 3, thereby increasing the water flow on the surface of the water-cutting plate body 1. This structure can change the strength of the groove 3 in blocking the cooling water flow to the edge of the water-cutting plate body 1, thereby changing the amount of water on the surface of the water-cutting plate body 1. By setting the fixing component 6, the elastic protrusion 62 in the fixing component 6 can be engaged with the corresponding fixing groove 412 at the bottom of the connecting plate 41 during use, which can quickly fix the moving position of the connecting plate 41. Users can adjust the blocking strength of the groove 3 according to actual needs, which improves the practicality of the device.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An R1 work roll preparation apparatus, comprising a water-cutting plate body (1) for guiding the flow of cooling water to the roll, characterized in that, The main body of the water-cutting plate (1) has a mounting surface (11) on the top, a flow guiding slope (12) on one side of the main body of the water-cutting plate (1), a side wall (13) connected to the mounting surface (11) and the flow guiding slope (12) is also provided on the side of the main body of the water-cutting plate (1), a groove (3) is provided on the surface of the flow guiding slope (12), and a resistance adjustment mechanism (4) for adjusting the volume of the groove (3) is provided on the main body of the water-cutting plate (1).

2. The R1 work roll preparation apparatus according to claim 1, characterized in that, A mounting hole (2) is provided on the upper part of the mounting surface (11).

3. The R1 work roll preparation apparatus according to claim 1, characterized in that, Multiple grooves (3) are evenly distributed on the surface of the guide slope (12), and the upper part of the grooves (3) extends to the upper part of the mounting surface (11).

4. An R1 work roll preparation apparatus according to claim 1 or 3, characterized in that, A chute (5) is provided on the side wall (13) to pass through the main body (1) of the water-cutting plate, and a baffle (51) is provided on the side wall of the groove (3), and the baffle (51) is connected to the chute (5).

5. The R1 work roll preparation apparatus according to claim 4, characterized in that, The resistance adjustment mechanism (4) includes a connecting plate (41) that is slidably disposed inside the slide groove (5). The surface of the connecting plate (41) is provided with multiple blocks (411) that protrude upwards. The blocks (411) are slidably disposed inside the groove (51).

6. The R1 work roll preparation apparatus according to claim 5, characterized in that, A pull ring (42) is connected to the end of the connecting plate (41).

7. The R1 work roll preparation apparatus according to claim 5, characterized in that, A fixing component (6) is provided on the side of the water-cutting plate body (1) to fix the moving position of the connecting plate (41).

8. The R1 work roll preparation apparatus according to claim 7, characterized in that, The fixing component (6) includes a support plate (61) fixedly mounted on the side wall (13), an elastic tab (62) welded to the upper part of the support plate (61), and a plurality of fixing grooves (412) at the bottom of the connecting plate (41) that cooperate with the elastic tab (62).

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