JPH11285712A - Device for drainage of cooling water on work roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the wiping of cooling water and the injection of lubricant without interferring and to always enable optimum lubricating rolling by fitting lubricant spray nozzle header and an atomizing water spray nozzle header to a supporting frame and also, disposing both headers at the downward side in the rotating direction of a work roll from a drainage wiper. SOLUTION: The drainage wiper 2 is composed of an elastic sealing material 3 extended in the axial direction of the work roll and a mechanism for pushing the elastic sealing material 3. The drainage device is provided with the lubricant spray nozzle header 10 composed of the drainage wiper 2, lubricant spray header 13 and a lubricant injecting nozzle 11. The atomizing water spray nozzle header 20 composed of an atomizing water spray header 21 and a water injection nozzle 22, is arranged at the lower part of the lubricant spray header 13, and the water spraying nozzle 22 injects the atomizing water 23 to near the roll biting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for draining a rolling roll during hot rolling, supplying rolling oil to the roll,
Further, the present invention relates to an apparatus for supplying water entrained between a rolling roll and a material to be rolled.

[0002] In hot rolling a high-temperature metal such as steel, oil lubrication rolling is performed in which lubricating oil is injected and supplied between a rolling roll and a material to be rolled in order to reduce a load during rolling. At this time, if the lubricating oil is sprayed onto the rolling roll to which the roll cooling water has adhered, the adhesion of the lubricating oil and the formation of an oil film will not be performed efficiently, and the intended purpose will not be achieved. Therefore, prior to the injection of the lubricating oil onto the roll surface, the water on the roll surface is completely wiped off with a drain wiper.

More specifically, as shown in FIG. 3, for example, a tip end of a support frame 5 which can be rotated up and down by a cylinder 7 and a rotation support shaft 6 by a drainer wiper 2 comprising an elastic sealing material 3 and a pressing mechanism 4. The drainer wiper 2 is attached to the elastic sealing member 3 by a pressing mechanism 4.
Is brought into contact with the rolling roll 1 to drain water. Further, on the downstream side in the rotation direction of the rolling roll, a lubricating oil spray nozzle header 1 including a lubricating oil spray nozzle header 13 including a spray header 13 provided on a support frame 12 and a lubricating oil spray nozzle 11.
A value of 0 injects the lubricating oil 14 to the outer peripheral surface 1a of the work roll.

However, in the case of such an apparatus, when the diameter of the work roll 1 increases, the position of the drainer wiper 2 is displaced downward as shown in FIG. This causes a problem that the lubricating oil does not sufficiently reach the work roll.

When the diameter of the work roll 1 is reduced, the spray header 13 for spraying the lubricating oil and the oil spray nozzle 11 are fixed on the support frame.
As shown in FIG. 5, a part of the lubricating oil injected from the lubricating oil injection nozzle 11 may 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 is too small, there is a problem that an oil film is not uniformly formed on the rolling roll 1.

[0006] In hot rolling of steel, there is a case where water entrainment rolling is performed in which the material S to be rolled is rolled while being cooled at the entrance of the roll bite. In this case, the lubricating oil is not injected, and the cooling water of the material to be rolled is injected from the water entrainment spray nozzle header having the entrainment water injection nozzle directed to the roll bite entrance.

In the hot rolling of steel, the oil rolling and the water entrainment rolling are selectively used depending on the required quality and material of the steel. Therefore, it is necessary to install the lubricating oil spray nozzle header and the water entraining spray nozzle header in a narrow space between the above-mentioned drainer wiper and the rolled material. It has been difficult to make a complicated structure that can be changed according to changes.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art. Therefore, even if the diameter of the work roll is changed and the position of the wiper is displaced, the injection of the lubricating oil is performed by the wiper. Without being interfered by
Further, even if the diameter of the work roll becomes small, it is possible to supply the lubricating oil onto the roll surface, and to integrate the spray nozzle header for water entrainment for supplying entrained water to the roll bite with the water draining device, so that it can be compactly stored. It is intended to provide a device.

[0009]

In order to solve the above-mentioned problems, the present invention provides a method in which an elastic material is brought into contact with a work roll at the other end of a support frame rotatably provided at one end. In a work roll draining device provided with a drain wiper for wiping off the cooling water attached to the work roll, a lubricating oil spray nozzle header for performing oil lubricating rolling, and a water entraining spray nozzle for performing water entrainment rolling A header and a header are attached to the support frame, and the lubricating oil spray nozzle header and the water entrainment spray nozzle header are arranged downstream of the drainer in the rotation direction of the work roll.

[0010] The structure of the draining wiper in the above-mentioned work roll draining device is constituted by an elastic seal member extending in the axial direction of the rolling roll, and a pressing mechanism for holding the elastic seal member so as to advance and retreat with respect to the work roll. It is preferable to use the following.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing an outline of the structure of a drainer according to the present invention, and the Larkroll 1 of the above example is shown.
This is the case when applied to. A draining device according to the present invention is installed on the entry side of a work roll 1 arranged vertically so as to bite and roll the material S to be rolled, and a drainer wiper 2 for wiping off cooling water adhering to the work roll. A lubricating oil spray nozzle header 10 comprising a lubricating oil spray header 13 and a lubricating oil spray nozzle 11 attached to the spray header;
2 is attached to the tip of the work roll side.

A water entrainment spray nozzle header 20 comprising a water entrainment water spray header 21 and a water injection nozzle 22 is provided below the lubricating oil spray header 13, and the water injection nozzle 22 injects entrained water 23 near the roll bite. You can do it.

A support frame 5 for supporting the drainer 2, the lubricating oil spray nozzle header 10 and the water entrainment spray nozzle header 20 is rotatably supported at one end away from the work roll by a rotatable support shaft 6 up and down. A cylinder 7 is mounted as an actuator on the side opposite to the work roll with the rotation support shaft 6 interposed therebetween. With the operation of the cylinder 7, the draining wiper 2 mounted on the end of the support frame on the work roll side is operated regardless of the roll diameter. Positioning is performed so as to always contact the work roll. That is, when the diameter of the work roll is large, the work roll side is displaced downward. On the other hand, when the diameter of the work roll is small, the work roll is displaced upward and the tip of the drainer wiper 2 always contacts the outer peripheral surface 1a of the work roll 1. Is available.

The draining wiper 2 is an elastic sealing material 3 which is in direct contact with the work roll 1 and wipes off cooling water from the roll surface.
And a pressing mechanism 4 for supporting the elastic sealing material 3 from behind and pressing it against the work roll, or adjusting the pressing force. The elastic sealing material 3 extends over the length of the work roll in its function, so that the pressing mechanism also extends over the length. The mechanism for pressing the elastic sealing material is not particularly limited.
What is necessary is just to use the thing disclosed in the 9th publication, or its improvement technique.

As described above, the lubricating oil spray nozzle header 10 is attached to the lower end side of the drainer wiper 2 (downstream in the work roll rotation direction indicated by the arrow in the drawing) at the tip of the support frame 5. The lubricating oil spray header 13 is no longer independent as in the prior art, but is displaced integrally by the support frame 5, so that the lubricating oil 14 and the draining wiper 2 that are sprayed on the roll by the displacement of the draining wiper 2 are separated. There is no interference. This lubricant spray header 10
The amount of lubricating oil injected from the controller is controlled by a control device (not shown).

The above lubricating oil spray nozzle header 10
May be fixedly attached to the distal end of the support frame 5, or may be attached movably back and forth on the support frame. By doing so, it is possible to inject the lubricating oil in an optimum state corresponding to the change in the roll diameter. Further, by providing the water entraining spray nozzle header 20 integrally with the drainer wiper 2 and the lubricating oil spray nozzle header, it is possible to reduce the size of the entire equipment, and at the same time, to reduce the entrained water 23 regardless of the fluctuation 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 entangled water spray header 21 may be housed in an integrated frame 15 and attached to the support frame 5.

The case where the configuration of the present invention is applied to the upper work roll has been described above. However, when the configuration is applied to the lower work roll, it is natural that the above configuration may be symmetrical in the vertical direction. Further, the drainer wiper 2 for the support frame 5 and the lubricant spray nozzle header 10
The mounting means such as is not limited to those described in the above embodiment, and can be changed within a range that does not impair the object and effect of the present invention, such as mounting all devices above or below the support frame. Is also possible.

[0018]

Since the present invention is constructed as described above, the wiping of the cooling water and the injection of the lubricating oil at the hot rolling mill entry side can be performed without mutual interference. Thereby, the oil lubrication rolling can be always performed under the optimum condition, which contributes to the improvement of the rolling efficiency and the stabilization of the product.
Further, in the present invention, since the water entrainment spray nozzle header and the drainer wiper and the lubricating oil spray nozzle header are mounted on the same support frame, the entire apparatus can be made compact and the entrained 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 entrained water injection device is provided integrally with the lubricating oil injection device.

FIG. 3 is a conceptual diagram showing an arrangement of a conventional drainer and a lubricating oil injection device.

FIG. 4 is an explanatory diagram showing the inconvenience of the conventional example when the roll diameter is large.

FIG. 5 is an explanatory diagram showing the inconvenience of the conventional example when the roll diameter is small.

[Explanation of symbols]

 1: Work roll 2: Drain wiper 3: Elastic sealing material 4: Pressing mechanism 5: Support frame 6: Rotating support shaft 7: Cylinder 10: Lubricant spray nozzle header 11: Lubricant spray nozzle 12: Support frame 13: Lubrication Oil spray header 14: Lubricating oil 15: Frame 20: Water entrainment spray nozzle header 21: Entrainment water spray header 22: Water injection nozzle 23: Entrainment water S: Rolled material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Narumi 1 Kawasaki-cho, Chuo-ku, Chiba City, Chiba Prefecture Inside the Chiba Works of Steel Corporation (72) Inventor Makoto Suzuki 1 Kawasaki-cho, Chuo-ku, Chiba City, Chiba Prefecture Kawasaki (72) Inventor Katsuhiko Kato 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Chiba Works Chiba Works

Claims (2)

[Claims] 1. A draining wiper for contacting an elastic material with a work roll to wipe off cooling water attached to the work roll is installed at the other end of a support frame rotatably provided at one end thereof. In the work roll draining device, a lubricating oil spray nozzle header for performing oil lubricating rolling and a water entraining spray nozzle header for performing water entraining rolling are attached to the support frame, and the lubricating oil spray is The work roll cooling water draining device, wherein the nozzle header and the water entrainment spray nozzle header are disposed downstream of the work drain wiper in the rotation direction of the work roll. 2. The drainer according to claim 1, wherein the wiper comprises an elastic seal member extending in the axial direction of the work roll, and a pressing mechanism for pressing the elastic seal member against the work roll. Work roll drainer.