JPH10175005A - Water breaking device of rolling mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dam the water coming to attach the upper back-up roll and carried to the outlet of the rolling mill, to prevent the water from falling upon a rolled stock after rolling and to suppress the generation of white stain. SOLUTION: The water breaking device of this rolling mill is equipped with a wiper roll 1 which abuts the surface of the back-up roll over the whole breadth of the back-up roll 4, and freely rotates contering a shaft canter a nearly plate-shaped partition plate 2 which is arranged to cover the upper part of the rolled stock at the upstream side of the wiper roll 1 and at least has the same breadth of the wiper roll 1, and a flexible plate 3 which is fixed to the end of the partition plate 2 on the downstream side (on the side of wiper roll 1) and abuts the surface of the wiper roll 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a draining device for a rolling mill, and more particularly to a draining device for a rolling mill used in an aluminum cold rolling facility.

[0002]

2. Description of the Related Art Conventionally, cold rolling of aluminum is usually performed using a low viscosity neat type (kerosene type) rolling oil. However, the neat type rolling oil has a drawback that it cannot be applied to high-speed rolling because it has poor cooling properties, is flammable, and may be ignited by heating. For this reason, aluminum cold rolling using an emulsion type rolling solution that has high cooling performance and has no risk of ignition has been proposed in some parts. Such emulsion-type rolling fluid is mostly water, has cooling ability four times that of neat-type rolling oil, and has no flash point, so there is no risk of ignition, high speed rolling can be achieved, and running can be achieved. It has advantages such as low cost. On the other hand, since most of the emulsion-type rolling liquid is water, if water adheres to the material to be rolled, white water (white rust) is generated on the aluminum as the material to be rolled due to the water, making it impossible to perform rolling in the next step. to enable. This is because the coefficient of friction between the portion where white stainless steel is generated and the portion where white stainless steel is not generated is different, so that a large elongation occurs locally and a break may occur.

Japanese Patent Laid-Open Publication No. 1-130808 discloses a method for removing the rolling liquid used for such rolling, in which a wiper is provided on the exit side of the material to be rolled to remove the remaining rolling liquid and blow air with a nozzle. Although a method of sucking this is disclosed, it is not effective for preventing the generation of white stain since this is for removing water after adhering to the material to be rolled.

On the other hand, it is known that the above-mentioned moisture of the rolling liquid adheres to the material to be rolled from the rotating surface of the upper backup roll of the rolling mill. Here, FIG.
FIG. 1 is a view showing a rolling mill used for aluminum cold rolling equipment. The rolling mill shown in this figure, a pair of work rolls for rolling the material to be rolled, a pair of upper and lower backup rolls to complement the work roll, and a rolling liquid spraying device that sprays a rolling liquid on the material to be rolled before rolling , Is provided. The rolling fluid spraying device includes a nozzle for spraying the rolling fluid, a gutter for collecting the sprayed rolling fluid, a tank for storing the rolling fluid, and a pump for pumping the rolling fluid. Since the rolling liquid sprayed from the nozzle onto the material to be rolled before rolling is extremely large, the dotted portions in the drawing are in a state of being submerged in water. Therefore, the rolling liquid sprayed on the material to be rolled is conveyed to the outlet side of the rolling mill along with the rotation of the upper backup roll along the roll surface of the upper backup roll. In order to prevent the transport of the rolling liquid, in a conventional drainer, as shown in FIG.
A wiper roll was brought into contact with the surface of the upper backup roll to dampen the rolling liquid flowing along the roll surface as shown by a broken line.

[0005]

However, since the above-mentioned rolling uses a very large amount of rolling fluid,
The rolling liquid blocked by the wiper roll has spilled over the wiper roll, and the damping liquid has caused the rolling liquid to jump over the wiper roll and scatter to the exit side of the rolling mill. In particular, the climbing over and splashing of the rolling liquid become remarkable in high-speed rolling. for that reason,
Moisture adhered to the material to be rolled, and the generation of white stain (white rust) could not be effectively prevented.

[0006] The present invention is to solve such a problem. That is, the present invention can dampen the moisture adhered to the upper backup roll and conveyed to the exit side of the rolling mill, prevent the moisture from dropping to the material to be rolled after rolling, and generate white stainless steel. It is an object of the present invention to provide a draining device for a rolling mill capable of suppressing the occurrence of water.

[0007]

According to the present invention, a pair of work rolls for rolling a material to be rolled, at least a pair of upper and lower backup rolls for supporting the work rolls, and a rolling liquid applied to the material to be rolled before rolling. Rolling liquid spraying device to be sprayed, and a draining device of a rolling mill comprising: a roll contacting the roll surface over the entire width of the upper backup roll,
A wiper roll that freely rotates around its axis, and a partition plate that is provided so as to cover the upper part of the material to be rolled on the upstream side of the wiper roll and has a width equal to or greater than at least the wiper roll, A bending plate provided at an end portion of the partition plate on the wiper roll side, which is in contact with the roll surface of the wiper roll, and a rolling liquid adhered and conveyed to the roll surface of the upper backup roll by the wiper roll. A draining device for a rolling mill, wherein a damper, a partitioning plate and a bending plate are used to dampen a rolling liquid or splashes that try to get over a wiper roll.

[0008] The water draining device of the rolling mill of the present invention described above,
The wiper roll dams the rolling fluid adhering to and conveyed to the roll surface of the upper backup roll, and the partition plate and the flexure plate dampen the rolling fluid and splashes that try to get over the wiper roll.
With this configuration, the water adhered to the upper backup roll and conveyed to the exit side of the rolling mill can be dammed, and the water can be prevented from falling to the material to be rolled after the rolling,
Generation of white stain can be suppressed. Also,
By closing the gap between the wiper roll and the partition plate with a flexible bending plate such as a rubber plate, without stopping the rotation of the wiper roll, always contact,
This gap can always be closed.

According to an embodiment of the present invention, it is preferable that the partition plate is connected to a roll arm supporting the wiper roll.

According to the configuration of the embodiment of the present invention described above, the partition plate always moves together with the wiper roll, and when the wiper roll comes into contact with the upper backup roll, the partition plate always serves as the partition plate. Can play a role.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing a drainer for a rolling mill according to the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. However, the illustration of the axle box of the upper backup roll and the housing of the rolling mill is omitted.

The draining device of the rolling mill according to the present invention shown in these figures comprises a wiper roll 1 which is in contact with the roll surface over the entire width of the upper backup roll 4 and freely rotates about an axis, and a wiper roll. 1 is provided so as to cover the upper part of the material to be rolled on the upstream side of at least the wiper roll 1.
A partition plate 2 having a width approximately equal to that of the partition plate 2, and a bending plate 3 provided at an end on the downstream side (wiper roll 1 side) of the partition plate 2 and in contact with the roll surface of the wiper roll 1. The wiper roll 1 damps the rolling liquid adhering and conveyed to the roll surface of the upper backup roll 4, and the partitioning plate 2 and the bending plate 3 prevent the rolling liquid and the droplets that try to get over the wiper roll 1. It is intended to stop damming.

The wiper roll 1 is basically the same as that shown in FIG. 4, and includes a roll 1w abutting on the upper backup roll 4 and a roll arm 1 supporting the roll 1w.
a, which comprises a moving cylinder 1s rotatably connected to the roll arm 1a, and the like.
The moving cylinder 1s is rotatably connected to a housing of a rolling mill (not shown). In FIG. 2, the roll 1w has at least the same width (length in the axial direction) as the upper backup roll 4, is supported at both ends by the roll arm 1a, and freely rotates in accordance with the rotation of the upper backup roll 4. I can do it. Further, for maintenance and the like, the roll 1w is
The upper backup roll 4 can be separated from the upper backup roll 4 by the action of s.

The partition plate 2 is composed of a rectangular plate-like member 2a and its reinforcing member 2b.
(And the reinforcing member 2b) are connected to the roll arm 1a by the connecting member 5. The connecting member 5 has rigidity and maintains a constant positional relationship between the roll 1w and the flat member 2a. Therefore, the partition plate 2 always moves together with the wiper roll 1, and can always function as the partition plate 2 when the wiper roll 1 comes into contact with the upper backup roll 4. Note that, as the partition plate 2, a curved plate member may be used instead of the flat plate member 2 a, or a plate member wider than the wiper roll 1 may be used.

The bending plate 3 is a flexible rubber plate or carbon plate. The bending plate 3 is for closing a gap between the roll 1 w of the wiper roll 1 and the flat member 2 a of the partition plate 2. By using the flexible bending plate 3 in this portion, the roll 1w can always be kept in contact with the roll surface of the roll 1w without hindering the rotation of the roll 1w. As shown in FIGS. 1 and 2, the bending plate 3 is fixed to the rear surface of the downstream end of the flat member 2a with bolts or the like. In FIG. 2, the width (axial length of the roll 1w) is the same as the flat member 2a, but it is necessary that the width is at least equal to the width (axial length) of the roll 1w.

The draining device for a rolling mill according to the present invention described above,
It is employed in a rolling mill used in a cold rolling mill for aluminum similar to the rolling mill shown in FIG. That is, the draining device of the present invention includes a pair of work rolls for rolling a material to be rolled, at least a pair of upper and lower backup rolls supporting the work rolls, and a rolling liquid jet for spraying a rolling liquid on the material to be rolled before rolling. In the rolling mill, the wiper roll 1 dams the rolling liquid adhered to and conveyed to the roll surface of the upper backup roll 4, and the partition plate 2 and the bending plate 3 try to get over the wiper roll 1. It dams up liquids and splashes. Therefore, it is possible to dampen the moisture carried to the exit side of the rolling mill along the upper backup roll 4, prevent the moisture from dropping to the material to be rolled, and suppress the generation of white stain. Can be.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[0018]

As described above, according to the water draining device of the rolling mill of the present invention, the rolling liquid adhered to and conveyed to the roll surface of the upper backup roll by the wiper roll can be damped, and the partition plate and the flexure can be prevented. The plate can block the rolling liquid and splashes that try to get over the wiper roll, and can block the moisture that adheres to the upper backup roll and is conveyed to the exit side of the rolling mill. Has excellent effects such as the ability to prevent the fall of white powder and the generation of white stain.

[Brief description of the drawings]

FIG. 1 is a side view showing a draining device for a rolling mill according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG. However, the illustration of the intermediate portion is omitted.

FIG. 3 is a diagram showing a rolling mill used in an aluminum cold rolling facility.

FIG. 4 is a view showing a conventional drainer of a rolling mill.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wiper roll 1 w roll 1 a roll arm 1 s moving cylinder 2 partition plate 2 a flat member 2 b reinforcing material 3 flexure plate 4 upper backup roll 5 connecting member

Claims (2)

[Claims] 1. A rolling machine comprising: a pair of work rolls for rolling a material to be rolled; at least a pair of upper and lower backup rolls for supporting the work rolls; A wiper roll that is in contact with the roll surface over the entire width of the upper backup roll and freely rotates about an axis, and a material to be rolled upstream of the wiper roll. A partition plate provided so as to cover the upper part and having a width at least equal to or larger than the wiper roll; and a bending plate provided at an end of the wiper roll side of the partition plate and in contact with the roll surface of the wiper roll. A flexible plate, comprising: damping a rolling liquid adhered and conveyed to the roll surface of the upper backup roll by the wiper roll;
A draining device for a rolling mill, wherein the partition plate and the bending plate block a rolling liquid and splashes that try to get over the wiper roll. 2. The draining device according to claim 1, wherein the partition plate is connected to a roll arm that supports the wiper roll.