Hot shearing device with cooling mechanism

Abstract

The utility model provides a hot shearing device with a cooling mechanism, and belongs to the technical field of steel machining equipment. Comprising a hot shearing machine and a cooling mechanism, the hot shearing machine is provided with a shearing table used for containing a hot-rolled steel plate, and the cooling mechanism is arranged corresponding to the shearing table and used for cooling the shearing table. The cooling mechanism can cool the shearing table and reduce the surface temperature of the shearing table, so that the temperature difference between the interior and the outer surface of the shearing table is reduced, local warping of the surface of the shearing table due to non-uniform temperature is prevented, and the temperature of a hot-rolled steel plate is reduced when the hot-rolled steel plate passes through the shearing table subsequently. And the surface quality risk caused by warping, bulging and scraping of the surface of the steel plate and the surface of the shearing table is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel material processing equipment, in particular to a hot shearing device provided with a cooling mechanism. Background Art

[0002] The existing wide and thick plate hot segmentation usually adopts a 120mm hydraulic unit, which is used to shear thick plates. Its shearing temperature needs to be less than 900℃. The hot segmentation shearing unit determines the surface quality of the steel plate after shearing, such as dimensional accuracy, edge neatness, and smoothness. At present, the hot segmentation shearing unit is usually located between the front and rear cooling beds, and shears the steel plates produced by the rolling mill whose length exceeds the width of the cold field, such as 38 meters.

[0003] In the rolling production process of hot-rolled steel plates, although the hot-rolled steel plates will be cooled before shearing, the temperature of hot-rolled steel plates, especially wide and thick plates, is still high after cooling due to their large thickness. When the rolled steel plates pass through the shearing table, the residual heat of the hot-rolled steel plates will still cause the surface temperature of the shearing table guard plate to rise significantly, while the inside of the shearing table guard plate is less heated and has a lower temperature. This leads to uneven heating between the inside and outside of the shearing table guard plate, resulting in different volume expansion and contraction inside and outside the shearing table guard plate, which eventually leads to bulging of the shearing table guard plate surface. After the shearing table guard plate surface bulges, if it is not cooled in time, the bulging part of the shearing table guard plate surface will scratch the surface of the steel plate when the steel plate passes through, leaving scars on the surface of the steel plate, affecting the quality of the steel plate. At present, the shearing table usually adopts natural slow cooling, which has low cooling efficiency, restricting the production efficiency of the steel plate. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a hot shearing device provided with a cooling mechanism, which is used to solve the problem that the shearing table guard plate surface bulges cannot be cooled and eliminated in time in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a hot shear device provided with a cooling mechanism, including a hot shear machine and a cooling mechanism, wherein the hot shear machine has a shearing table for holding hot-rolled steel plates, and the cooling mechanism is arranged corresponding to the shearing table and is used to cool the shearing table.

[0006] Optionally, it further comprises a steel plate sensor and a control unit, wherein the steel plate sensor and the cooling mechanism are respectively connected to the control unit;

[0007] The steel plate sensor is arranged corresponding to the shearing table and is used to detect the steel plate on the shearing table. When there is a hot-rolled steel plate on the shearing table, the cooling mechanism stops cooling, and when there is no hot-rolled steel plate on the shearing table, the cooling mechanism starts cooling.

[0008] Optionally, the cooling mechanism is a cooling nozzle group for spraying coolant, the cooling nozzle group includes at least one cooling nozzle, the cooling nozzle group is arranged toward the shearing table, and at least part of the shearing table is located within the spraying range of the cooling nozzle group.

[0009] Optionally, the cooling nozzle group includes two or more cooling nozzles, and the cooling nozzles are arranged in sequence along the direction in which the hot-rolled steel plate passes through the hot shearing machine.

[0010] Optionally, there are four cooling nozzles.

[0011] Optionally, there are two cooling nozzle groups, and the two cooling nozzle groups are respectively arranged on both sides of the direction in which the hot-rolled steel plate passes through the hot shear corresponding to the hot shear.

[0012] Optionally, the spraying direction of the cooling nozzle group is toward the direction in which the hot-rolled steel plate leaves the hot shearing machine.

[0013] Optionally, the cooling mechanism is a cooling fan.

[0014] Optionally, the hot shearing machine further comprises a shearing frame, on which a shearing blade is provided, and the shearing blade is used to cooperate with the shearing table to shear the hot-rolled steel plate.

[0015] Optionally, it also includes rollers, and there are at least two rollers. In the direction in which the hot-rolled steel plate passes through the hot shearing machine, the two rollers are respectively arranged in front and behind the shearing table.

[0016] As described above, the utility model provides a hot shear device with a cooling mechanism, which has the following beneficial effects: since the cooling mechanism is included, and the cooling mechanism corresponds to the shear table and can cool the shear table, after the hot-rolled steel plate passes through the shear table, the cooling mechanism can cool the shear table, reduce the surface temperature of the shear table, thereby reducing the temperature difference between the inside and the outside of the shear table, preventing the shear table surface from being partially warped due to uneven temperature, thereby reducing the surface quality risk caused by warping, bulging and scratching of the steel plate surface and the shear table surface when the hot-rolled steel plate passes through the shear table. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the structural schematic diagrams of a hot shear device provided with a cooling mechanism in an embodiment of the utility model.

[0018] Figure 2 This is the second structural schematic diagram of the hot shear device provided with a cooling mechanism in the embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the layout position of a hot shear device provided with a cooling mechanism in an embodiment of the utility model.

[0020] Explanation of reference numerals: hot shear 1 , cooling mechanism 2 , roller table 3 , hot rolled steel plate 4 , shearing table 10 , shearing frame 11 , shearing blade 12 , cooling pump 20 , cooling nozzle 21 , infusion tube 22 . DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0023] See also Figure 1 and Figure 3 In this embodiment, a hot shear device provided with a cooling mechanism 2 is provided, comprising a hot shear 1 and a cooling mechanism 2. In the flow direction of the hot rolled steel plate, the hot shear 1 is arranged after the rolling mill. The hot shear 1 has a shearing table 10 for holding the hot rolled steel plate 4, and the cooling mechanism 2 is arranged corresponding to the shearing table 10 and used to cool the shearing table 10. In this embodiment,

[0024] Specifically, the hot shearing machine 1 also includes a shearing frame 11, on which a shearing blade 12 is provided, and the shearing blade 12 is used to cooperate with the shearing table 10 to shear the hot-rolled steel plate 4. The cooling mechanism 2 can cool the shearing table 10. After the hot-rolled steel plate 4 passes through the shearing table 10, the cooling mechanism 2 can cool the shearing table 10 to reduce the surface temperature of the shearing table 10, thereby reducing the temperature difference between the inside and the outside of the shearing table 10, preventing the surface of the shearing table 10 from being locally warped due to uneven temperature, thereby reducing the subsequent surface quality risk caused by warping, bulging and scratching of the steel plate surface and the shearing table 10 surface when the hot-rolled steel plate 4 passes through the shearing table 10. In this embodiment, a guard plate is provided on the surface of the shearing table 10, and when the hot-rolled steel plate 4 passes through the shearing table 10, the guard plate is in direct contact with the hot-rolled steel plate 4. After the steel plate passes through the shearing table 10, the cooling mechanism 2 cools the surface of the guard plate that is in contact with the steel plate.

[0025] In some embodiments, before the hot-rolled steel plate 4 passes through the shearing table 10, and after the hot-rolled steel plate 4 passes through the shearing table 10, the operator turns on the cooling mechanism 2 to cool the shearing table 10. When the hot-rolled steel plate 4 is about to pass through the shearing table 10, the operator turns off the cooling mechanism 2 to prevent the cooling mechanism 2 from directly cooling the hot-rolled steel plate 4 and affecting the quality of the steel plate.

[0026] In this embodiment, the hot shear device further includes a steel plate sensor and a control unit, and the steel plate sensor and the cooling mechanism 2 are respectively connected to the control unit. The steel plate sensor is arranged corresponding to the shearing table 10 and is used to detect the steel plate on the shearing table 10. When there is a hot-rolled steel plate 4 on the shearing table 10, the cooling mechanism 2 stops cooling, and when there is no hot-rolled steel plate 4 on the shearing table 10, the cooling mechanism 2 performs cooling. Specifically, the control unit can be a single-chip microcomputer, and the steel plate sensor can be a laser sensor. The single-chip microcomputer has low cost and good stability, and the laser sensor has high detection effect and strong anti-interference ability, which is suitable for industrial applications.

[0027] In some embodiments, the cooling mechanism 2 is a cooling fan, which generates airflow to cool the shearing table 10 without providing additional cooling medium, and the cost is low.

[0028] In this embodiment, the cooling mechanism 2 is a cooling nozzle 21 group for spraying coolant, the cooling nozzle 21 group includes at least one cooling nozzle 21, the cooling nozzle 21 group is arranged toward the shearing table 10, and at least part of the shearing table 10 is located within the spraying range of the cooling nozzle 21 group. The cooling mechanism 2 cools the shearing table 10 by spraying coolant. Liquid cooling has good cooling effect and high cooling rate. In this embodiment, the coolant is water.

[0029] Specifically, the cooling nozzles 21 of the cooling nozzle 21 group may be two or more, for example, four. The cooling nozzles 21 are arranged in sequence along the direction in which the hot rolled steel plate 4 passes through the hot shear 1. Increasing the number of cooling nozzles 21 can increase the cooling range of the cooling mechanism 2, so as to increase the coverage of the cooling range of the cooling mechanism 2 on the shearing table 10.

[0030] In this embodiment, there are two cooling nozzles 21, and the two cooling nozzles 21 are respectively arranged on both sides of the hot shear 1 in the direction in which the hot rolled steel plate 4 passes through the hot shear 1. The two cooling nozzles 21 can cool the shearing table 10 from both sides of the shearing table 10, thereby improving the cooling efficiency of the shearing table 10.

[0031] In this embodiment, the spraying direction of the cooling nozzle 21 group is set toward the direction in which the hot-rolled steel plate 4 leaves the hot shear machine 1. The kinetic energy of the coolant sprayed by the cooling nozzle 21 group can clean the surface of the shear table 10, discharge impurities on the surface of the shear table 10, and prevent impurities from scratching the steel plate.

[0032] In this embodiment, the cooling nozzle 21 group includes a valve, a liquid delivery tube 22, a primary tube and a secondary tube. The valve is connected to a control unit, and the control unit controls the opening and closing of the valve. The liquid delivery tube 22 delivers cooling liquid to the valve, and the valve is connected to each cooling nozzle 21 in the cooling nozzle 21 group through the primary tube and the secondary tube.

[0033] In this embodiment, the cooling nozzle 21 is in the shape of a truncated cone, with a bottom diameter of 4 cm, a top diameter of 2 cm, and a height of 5 cm. The diameters of the infusion tube 22, the primary tube, and the secondary tube are 10 cm, 8 cm, and 4 cm, respectively. In this embodiment, the hot shear device further includes a roller 3, and there are at least two rollers 3. In the direction in which the hot rolled steel plate 4 passes through the hot shear machine 1, the two rollers 3 are respectively arranged in front and behind the shearing table 10. The hot rolled steel plate 4 enters or leaves the shearing table 10 through the roller 3.

[0034] In summary, the utility model provides a hot shearing device provided with a cooling mechanism 2. Since the cooling mechanism 2 is included, and the cooling mechanism 2 is provided corresponding to the shearing table 10 and can cool the shearing table 10, after the hot-rolled steel plate 4 passes through the shearing table 10, the cooling mechanism 2 can cool the shearing table 10, reduce the surface temperature of the shearing table 10, thereby reducing the temperature difference between the inside and the outside of the shearing table 10, preventing the surface of the shearing table 10 from being locally warped due to uneven temperature, thereby reducing the surface quality risk caused by warping, bulging and scratching of the steel plate surface and the shearing table 10 surface when the hot-rolled steel plate 4 passes through the shearing table 10.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A hot shear device provided with a cooling mechanism, characterized in that: It comprises a hot shear and a cooling mechanism. The hot shear has a shearing table for holding hot-rolled steel plates. The cooling mechanism is arranged corresponding to the shearing table and is used for cooling the shearing table.

2. The hot shear device provided with a cooling mechanism according to claim 1, characterized in that: It also includes a steel plate sensor and a control unit, wherein the steel plate sensor and the cooling mechanism are respectively connected to the control unit; The steel plate sensor is arranged corresponding to the shearing table and is used to detect the steel plate on the shearing table. When there is a hot-rolled steel plate on the shearing table, the cooling mechanism stops cooling, and when there is no hot-rolled steel plate on the shearing table, the cooling mechanism starts cooling.

3. The hot shear device provided with a cooling mechanism according to claim 1, characterized in that: The cooling mechanism is a cooling nozzle group for spraying coolant, the cooling nozzle group includes at least one cooling nozzle, the cooling nozzle group is arranged toward the shearing table, and at least part of the shearing table is located within the spraying range of the cooling nozzle group.

4. The hot shear device provided with a cooling mechanism according to claim 3, characterized in that: The cooling nozzle group includes two or more cooling nozzles, and each of the cooling nozzles is arranged in sequence along the direction in which the hot-rolled steel plate passes through the hot shearing machine.

5. The hot shear device provided with a cooling mechanism according to claim 4, characterized in that: There are four cooling nozzles.

6. The hot shear device provided with a cooling mechanism according to claim 3, characterized in that: There are two cooling nozzle groups, and the two cooling nozzle groups are respectively arranged on both sides of the direction in which the hot-rolled steel plate passes through the hot shear corresponding to the hot shear.

7. The hot shear device provided with a cooling mechanism according to claim 3, characterized in that: The spraying direction of the cooling nozzle group is toward the direction in which the hot-rolled steel plate leaves the hot shearing machine.

8. The hot shear device provided with a cooling mechanism according to claim 1, characterized in that: The cooling mechanism is a cooling fan.

9. The hot shear device provided with a cooling mechanism according to claim 1, characterized in that: The hot shearing machine also includes a shearing frame, on which a shearing blade is arranged, and the shearing blade is used to cooperate with the shearing table to shear the hot-rolled steel plate.

10. The hot shear device with a cooling mechanism according to claim 1, characterized in that: It also includes rollers, and there are at least two rollers. In the direction in which the hot-rolled steel plate passes through the hot shearing machine, the two rollers are respectively arranged in front and behind the shearing table.

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