JP3750346B2 - Work roll cooling water drainer - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to an apparatus for draining a rolling roll during hot rolling, supplying rolling oil to the roll, and further supplying entrained water between the rolling roll and a material to be rolled.
[0002]
When hot rolling a high-temperature metal such as steel, oil-lubricated rolling is performed to inject and supply lubricating oil between a rolling roll and a material to be rolled for the purpose of reducing the load during rolling. At this time, when the lubricating oil is sprayed onto the rolling roll to which the roll cooling water is adhered, the adhesion of the lubricating oil and the formation of the oil film are not performed efficiently, and the intended purpose is not achieved. Therefore, prior to the injection of the lubricating oil onto the roll surface, the water on the roll surface is completely wiped away by the draining wiper.
[0003]
Specifically, for example, as shown in FIG. 3, a draining wiper 2 comprising an elastic sealing material 3 and a pressing mechanism 4 is attached to the tip of a support frame 5 that can be turned up and down by a cylinder 7 and a turning support shaft 6. The draining wiper 2 is configured to drain the water by bringing the elastic sealing material 3 into contact with the rolling roll 1 by the pressing mechanism 4. Further, on the downstream side in the rotation direction of the rolling roll, the lubricating oil 14 is transferred to the work roll by the lubricating oil spray nozzle header 10 including the lubricating oil spray nozzle header 13 and the lubricating oil spray nozzle 11 including the spray header 13 provided on the support frame 12. It sprays on the outer peripheral surface 1a.
[0004]
However, when the diameter of the work roll 1 is increased with such a device, the position of the draining wiper 2 is displaced downward as shown in FIG. 4, so that the lubricating oil injected from the draining wiper 2 and the lubricating oil injection nozzle 11. 14 interferes with the problem that the lubricating oil does not sufficiently reach the work roll.
[0005]
Further, when the diameter of the work roll 1 is reduced, the spray header 13 and the oil injection nozzle 11 for injecting the lubricating oil are fixed on the support frame, so that they are injected from the lubricating oil injection nozzle 11 as shown in FIG. There is a possibility that part of the lubricating oil does not reach the outer peripheral surface 1 a of the work roll 1. Although it is possible to adjust the position of the lubricating oil injection nozzle 11 in order to solve such a problem, when the distance between the lubricating oil injection nozzle 11 and the work roll 1 becomes too small, the oil film formation on the rolling roll 1 is uniform. The problem of not being done occurs.
[0006]
Moreover, in hot rolling of steel, there are cases in which water-rolling rolling is performed in which the material to be rolled S is rolled while being cooled at the entrance of the roll tool. In that case, the lubricating oil is not sprayed, and the cooling water for the material to be rolled is sprayed from the water entraining spray nozzle header having the entraining water spray nozzle directed to the roll bite entrance.
[0007]
In the hot rolling of steel, the oil rolling and the water-rolling rolling are properly used depending on the required quality and material of the steel. Therefore, it is necessary to install a lubricating oil spray nozzle header and a water entraining spray nozzle header in a narrow space between the draining wiper and the rolled material. Therefore, the injection direction of the lubricating oil injection nozzle is set to the work roll system. It has been difficult to make a complicated structure that can be changed according to changes.
[0008]
[Problems to be solved by the invention]
The present invention aims to solve such problems of the prior art, and even if the work roll diameter fluctuates and the position of the draining wiper is displaced, the injection of lubricating oil is not interfered by the draining wiper, A device that can supply lubricating oil onto the roll surface even when the work roll diameter is reduced, and can integrate a spray nozzle header for water entrainment for supplying entrained water to the roll bite in a compact manner with the above draining device. The purpose is to provide.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides cooling water adhering to the work roll by bringing an elastic material into contact with the work roll at the other end of a support frame that is pivotally supported at one end. In a work roll draining device provided with a wiper wiper to wipe off, a lubricating oil spray nozzle header for performing oil lubricated rolling and a water entraining spray nozzle header for performing water rolling are attached to the support frame. In addition, the lubricating oil spray nozzle header and the water entraining spray nozzle header are arranged downstream of the draining wiper in the rotation direction of the work roll.
[0010]
Further, the structure of the draining wiper in the work roll draining apparatus described above is composed of an elastic sealing material extending in the axial direction of the rolling roll and a pressing mechanism for holding the elastic sealing material so as to advance and retreat with respect to the work roll. It is suitable to do.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing an outline of the structure of a draining apparatus according to the present invention, which is applied to the above-described Clark roll 1. A draining device 2 according to the present invention is installed on the entry side of the work roll 1 arranged vertically so as to bite and roll the material to be rolled S, and a draining wiper 2 for wiping off the cooling water adhering to the work roll; A lubricating oil spray nozzle header 10 including a lubricating oil spray header 13 and a lubricating oil spray nozzle 11 attached to the spray header is provided, and these are attached to the work roll side tip of the support frame 12.
[0012]
Further, a water entraining spray nozzle header 20 comprising an entraining water spray header 21 and a water spray nozzle 22 is provided below the lubricant spray header 13, and the water spray nozzle 22 can spray the entrained water 23 in the vicinity of the roll bite. It can be done.
[0013]
The support frame 5 that supports the draining wiper 2, the lubricant spray nozzle header 10 and the water entraining spray nozzle header 20 is supported at one end away from the work roll so as to be pivotable up and down by a pivot support shaft 6. A cylinder 7 is attached as an actuator on the opposite side of the work roll across the support shaft 6, and the draining wiper 2 attached to the end of the work roll side of the support frame by the operation always works roll regardless of the fluctuation of the roll diameter. Positioning is performed so as to be in contact with. That is, when the diameter of the work roll is large, the work roll side is displaced downward, while when the diameter of the work roll is small, the work roll is displaced upward so that the tip of the draining wiper 2 is always in contact with the outer peripheral surface 1a of the work roll 1. Can be done.
[0014]
The draining wiper 2 is in direct contact with the work roll 1 and wipes the cooling water from the roll surface. The elastic wiper 2 supports the elastic seal material 3 from behind and presses it against the work roll or presses it to adjust the pressing force. It consists of mechanism 4. The elastic sealing material 3 extends in the length direction of the work roll because of its function. Therefore, the pressing mechanism also extends over the length. The pressing mechanism of the elastic sealing material is not particularly limited, but for example, the one disclosed in JP-A-8-215719 or an improved technique thereof may be used.
[0015]
As described above, the lubricating oil spray nozzle header 10 is attached to the lower surface side of the draining wiper 2 (downstream in the direction of rotation of the work roll indicated by an arrow in the drawing) at the tip of the support frame 5. The spray header 13 is not independent as in the prior art, and is displaced integrally by the support frame 5, and the lubricant 14 injected on the roll and the draining wiper 2 interfere with each other due to the displacement of the draining wiper 2. Will disappear. The amount of lubricant injected from the lubricant spray header 10 is controlled by a control device (not shown).
[0016]
The lubricating oil spray nozzle header 10 may be fixedly attached to the tip of the support frame 5 or may be attached so as to be movable back and forth on the support frame. By doing in this way, lubricating oil can be injected in the optimal state corresponding to the fluctuation | variation of a roll diameter.
Further, by providing the water entraining spray nozzle header 20 integrally with the draining wiper 2 and the lubricating oil spray nozzle header, the entire facility can be made compact, and at the same time, the entraining water 23 can be reduced regardless of the variation of the work roll diameter. The injection position can be maintained at an appropriate position.
As shown in FIG. 2, the lubricating oil spray header 13 and the entrained water spray header 21 may be housed in an integrated frame 15 and attached to the support frame 5.
[0017]
As mentioned above, although the case where the structure of this invention was applied to an upper work roll was shown, when applying to a lower work roll, it is natural that the said structure should just be performed vertically symmetrically. Further, the means for attaching the draining wiper 2 and the lubricant spray nozzle header 10 to the support frame 5 are not limited to those described in the above embodiment, and can be changed within a range not impairing the object and effect of the present invention. For example, it is possible to mount all the devices above or below the support frame.
[0018]
【The invention's effect】
Since the present invention is configured as described above, it is possible to wipe the cooling water (wiping) and inject the lubricating oil on the hot rolling mill entrance side without mutual interference. As a result, oil lubrication rolling can always be performed under optimum conditions, contributing to improvement in rolling efficiency and product stabilization. Furthermore, in the present invention, since the water entraining spray nozzle header is attached to the drainage wiper and the lubricating oil spray nozzle header on the same support frame, the entire apparatus can be made compact and at the same time the entraining water can be jetted under appropriate conditions. .
[Brief description of the drawings]
FIG. 1 is a schematic view showing an outline of the structure of a drainer according to the present invention.
FIG. 2 is a schematic view of a modified example in which the entraining water injection device is provided integrally with the lubricating oil injection device.
FIG. 3 is a conceptual diagram showing an arrangement of a conventional draining device and a lubricating oil injection device.
FIG. 4 is an explanatory diagram showing the disadvantage of the conventional example when the roll diameter is large.
FIG. 5 is an explanatory view showing the disadvantage of the conventional example when the roll diameter is small.
[Explanation of symbols]
1: Work roll 2: Drain wiper 3: Elastic seal material 4: Pressing mechanism 5: Support frame 6: Rotating support shaft 7: Cylinder 10: Lubricating oil spray nozzle Header 11: Lubricating oil injection nozzle 12: Support frame 13: Lubrication Oil spray header 14: Lubricating oil 15: Frame body 20: Water entrainment spray nozzle header 21: Entrainment water spray header 22: Water injection nozzle 23: Entrainment water S: Rolled material

Claims (2)

Water draining of a work roll, in which a draining wiper is installed on the other end of a support frame that is pivotally supported at one end so that an elastic material is brought into contact with the work roll to wipe off the cooling water adhering to the work roll. In the device
A lubricating oil spray nozzle header for performing oil lubricated rolling and a water entraining spray nozzle header for performing water entraining rolling are attached to the support frame, and the lubricating oil spray nozzle header and water entraining spray nozzle header Is disposed on the downstream side in the rotation direction of the work roll with respect to the draining wiper. 2. The work roll draining apparatus according to claim 1, wherein the draining wiper comprises an elastic sealing material extending in an axial direction of the work roll and a pressing mechanism for pressing the elastic sealing material against the work roll.

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