JPH08257626A - Nozzle device for removing scale - Google Patents

Abstract

PURPOSE: To make scale pieces hardly remaining on a flat surface by easily scattering the scale piece removed by high pressure water toward any one side in the transporting course width direction on the flat surface. CONSTITUTION: Nozzles 5 for removing the scale on the flat surface 3 by colliding the high pressure water 4 jetted in fan-shape to the upward flat surface 3 of the metallic material 1 during transporting from the slanting direction in the transporting course width direction view of the flat surface 3, are provided. The jetting direction in the whole range of a jetting angle B for jetting the high pressure water 4 into the fan-shape to the flat surface 3 from the nozzles 5, is detected toward any one side in the transporting course width direction of this flat surface 3 in the plane view.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to high-pressure water sprayed in a hem-spreading pattern on an upward flat surface of a moving metal material such as a steel material or an aluminum material in a hot rolling process. The present invention relates to a scale removing nozzle device that is provided with a nozzle that removes the scale on the flat surface by colliding it obliquely in the widthwise direction of the surface movement path.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a substantially horizontal movement of a metal material 1 moving on a roller 2 in a direction indicated by an arrow in the drawing in a hot rolling process of a metal material 1 such as a steel material or an aluminum material. A conventional scale removing nozzle device is shown in which high-pressure water 4 is collided with the upward facing flat surface 3 to remove the scale on the flat surface 3, and the high-pressure water 4 sprayed in a hem-spreading manner is applied to the flat surface 3. As shown in FIG. 5, the flat surface 3 is collided from an oblique direction when viewed in the width direction of the moving path of the flat surface 3,
A plurality of flat spray nozzles 5 for removing the scale are arranged side by side in the width direction of the moving path of the flat surface 3, and the high-pressure water 4 spreads from the nozzle 5 of each of the nozzles 5 to the flat surface 3. Are arranged so that the range of the ejection angle B to be ejected in a uniform manner is a skirt-expanded range including the ejection direction toward one side and the ejection direction toward the other side in the movement path width direction of the flat surface 3 in a plan view. The range of the injection angle B includes the same injection direction C as the moving path longitudinal direction of the flat surface 3.

[0003]

Therefore, the scale piece, which is the scale after being removed by the high-pressure water 4 jetted in the same jetting direction C as the longitudinal direction of the moving path of the flat surface 3, is the scale piece of the high-pressure water 4. When the scale pieces stay on the flat surface 3 before the scale removing process, they scatter in the longitudinal direction of the moving path of the flat surface 3 which is the same as the jetting direction C and easily stay on the flat surface 3.
The high-pressure water 4 may collide with the scale piece to impair the original scale removal effect, and if the scale piece stays on the flat surface 3 after the scale removal treatment, it may hinder the subsequent rolling process.

The present invention has been made in view of the above circumstances, and by devising the injection direction of the high pressure water from the nozzle, the scale pieces removed by the high pressure water are less likely to stay on the flat surface. An object is to provide a nozzle device for use.

[0005]

The first characteristic constitution of the present invention for achieving the above object is to dispose high-pressure water sprayed in a hem-spreading manner on an upward flat surface of a moving metal material. A nozzle device for removing scale, which is provided with a nozzle for removing the scale on the flat surface by colliding from an oblique direction in a width direction of a movement path of the surface, wherein high-pressure water is applied from the nozzle to the flat surface. The point is that the injection direction in the entire range of the injection angle that causes the jet to be spread in the hem is directed to one of the width directions of the movement path of the flat surface in plan view.

A second characteristic configuration of the present invention is that, in the first characteristic configuration, the injection direction in the entire range of the injection angle is directed to the upper side of the movement path of the flat surface in plan view.

According to a third characteristic constitution of the present invention, in the first or second characteristic constitution, a plurality of the nozzles are arranged side by side in the width direction of the movement path of the flat surface, and these nozzles are arranged at a high pressure with respect to the flat surface. The water collision area is divided into a nozzle in which one side of the moving path of the flat surface is arranged on the side, and the collision area is divided into a nozzle in which the other side of the moving path of the flat surface is arranged in the side. The injection direction in the entire range of the injection angle of the nozzle in which the side-row collision range is arranged is such that one side of the nozzle is directed to the side in plan view and the other side is in the nozzle range in which the collision range is arranged. The injection direction in the entire range of the angle is that the other side is directed to the trapezoid in plan view.

[0008]

The operation of the first characteristic structure is as follows. Since the jet direction in the entire range of the jet angle for jetting the high-pressure water from the nozzle to the flat surface in a skirt-spreading manner is directed to either one of the width direction of the movement path of the flat surface in plan view, the high-pressure water It is easy for the scale pieces removed in step 1 to scatter in either direction of the width of the movement path of the flat surface.

The operation of the second characteristic structure is as follows. Since the jetting direction in the entire range of the jetting angle is directed to the upper side of the moving path of the flat surface in plan view, the scale pieces removed by the high-pressure water are likely to scatter toward the upper side of the moving surface of the flat surface.

The operation of the third characteristic structure is as follows. The scale piece removed by the high-pressure water sprayed from the nozzle where the one side of the flat surface has the alligator collision area,
One side of the scale piece tends to scatter toward the wain, and the scale piece removed by the high-pressure water sprayed from the nozzle in which the other side of the flat surface has the collision range of the crocodile surface easily scatters toward the saw side.

[0011]

EFFECT OF THE INVENTION In the scale removing nozzle device of the first characteristic configuration, the scale pieces removed by the high-pressure water easily scatter toward either one of the width directions of the moving paths of the flat surface. Hard to stay on top. In particular, even if the upward flat surface is a substantially horizontal surface over the entire surface, the scale pieces are unlikely to stay on the flat surface.

In the scale removing nozzle device of the second characteristic configuration, in addition to the effect of the first characteristic configuration, the scale pieces removed by the high-pressure water easily scatter toward the upper side of the moving path of the flat surface. It is less likely that the scattered scale pieces will adversely affect the rolling process subsequent to the lower side of the moving path.

In the scale removing nozzle device of the third characteristic structure, in addition to the effect of the first or second characteristic structure, almost all the scale pieces removed by the high-pressure water are directed to the same one side of the moving path. As compared with the case where the scale piece is scattered across the flat surface in the width direction of the moving path, the scale piece can be efficiently and effectively removed from the flat surface in a state where the moving distance to the side portion of the moving path is short.

[0014]

【Example】

[First Embodiment] FIGS. 1 and 2 are schematic views of a metal material 1 moving on a roller 2 in a direction indicated by an arrow in the drawing in a hot rolling process of a metal material 1 such as a steel material or an aluminum material. The scale removal nozzle device which removes the scale of the flat surface 3 by colliding the high-pressure water 4 with the horizontal upward flat surface 3 is shown. 3, as shown in FIG. 1, the flat surface 3 is caused to collide from an oblique direction in the widthwise direction of the moving path,
A plurality of flat spray nozzles 5 for removing the scale of the flat surface 3 are juxtaposed in the width direction of the moving path of the flat surface 3, and the horizontal collision range of the high-pressure water 4 against the flat surface 3 by each of these nozzles 5. A is arranged so as to be spaced apart from each other for each nozzle 5 in a state in which the end portions of the flat surface 3 overlap each other in the front-back direction when viewed in the moving path longitudinal direction.

In each of the nozzles 5, the range of the jetting angle B for jetting the high-pressure water 4 from the jetting hole is in the nozzle center axis X direction and in the direction Y which is deviated to one side from the center axis X direction. The collision force of the high-pressure water 4 with respect to the flat surface 3 is regulated in a fan-shaped range extending over, and is provided so as to be substantially evenly distributed over the entire length of the collision range A.

As shown in FIG. 2, each of these nozzles 5 shows the jetting direction in the entire range of the jetting angle B for jetting the high pressure water 4 from the nozzle 5 onto the flat surface 3.
In a direction that does not intersect the collision area A adjacent to the collision area A of the high-pressure water 4 by the nozzle 5 in a plan view, and is directed toward one of the movement path width directions on the upper side of the movement path of the flat surface 3. , Attached to the high-pressure water supply header 6.

Therefore, the high-pressure water 4 jetted from each of the nozzles 5 collides with the flat surface 3 in the corresponding collision area A, and the water after colliding with the flat surface 3 collides with the collision area A adjacent thereto. In a state where it does not easily flow or scatter toward A, it easily flows down from the side edge of the flat surface 3, and
The scale piece which is the scale after being removed by the collision of the high-pressure water 4 is also easily scattered toward the side edge portion of the flat surface 3 in a state where it is difficult to scatter toward the collision range A adjacent to the collision range A. .

[Second Embodiment] FIGS. 3 and 4 show another embodiment, in which a plurality of flat spray nozzles 5 are arranged such that the collision area A of the high-pressure water 4 against the flat surface 3 is one of the moving paths of the flat surface 3. The nozzle 5A whose side is arranged in the crocodile and the collision range A is divided into the nozzle 5B in which the other side of the movement path of the flat surface 3 is arranged in the crocodile, and as shown in FIG. One side has a collision range A. The injection direction in the entire range of the injection angle B for injecting the high-pressure water 4 onto the flat surface 3 of the nozzle 5A in which the one side is directed to the other side, and the other side is the collision range to the alligator. The other side faces the jet direction in the entire jet angle B for jetting the high-pressure water 4 onto the flat surface 3 of the nozzle 5B in which A is arranged.

Therefore, one side of the moving path is in the alligator collision area A.
The scale piece removed by the high-pressure water 4 sprayed from the nozzle 5A in which the nozzle 5A is arranged has one side easily scattered toward the crocodile, and the nozzle 5B in which the collision area A is arranged on the other side of the movement path. The scale piece removed by the high-pressure water 4 sprayed from the other side easily scatters toward the sea. Other configurations are the same as in the first embodiment.

[Other Embodiments] 1. The upward facing surface of the metal material for scale removal is
It may be slightly inclined along the movement direction or along the movement path width direction. 2. The nozzle that ejects the high-pressure water in a skirt-spreading manner may be one in which the collision range of the high-pressure water on the flat surface is formed in a circular shape or an elliptical shape. 3. It may be a scale removing nozzle device provided with a single scale removing nozzle. 4. In the scale removing nozzle device provided with a plurality of scale removing nozzles, a part or all of the jetting directions in the range of the jetting angle at which the high-pressure water is jetted from the nozzle to the flat surface in a hem-spreading manner, It may be directed in a direction intersecting with the collision range adjacent to the collision range of the nozzle. 5. The scale removing nozzle device according to the present invention is not limited to the one used in the hot pressing step of the metal material.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Side view

FIG. 2 is a plan view

FIG. 3 is a side view showing a second embodiment.

FIG. 4 is a plan view showing a second embodiment.

FIG. 5 is a side view showing a conventional technique.

FIG. 6 is a plan view showing a conventional technique.

[Explanation of symbols]

 1 Metal Material 3 Flat Surface 4 High Pressure Water 5 Nozzle 5A Nozzle 5B Nozzle A Collision Range B Jet Angle

Claims (3)

[Claims] 1. High-pressure water (4) sprayed in a skirt-spreading manner,
The upward flat surface (3) of the moving metal material (1) is collided obliquely with the flat surface (3) in the widthwise direction of the moving path of the flat surface (3) to remove the scale of the flat surface (3). A nozzle device for scale removal, which is provided with a nozzle (5) for performing high-pressure water (4) sprayed from the nozzle (5) to the flat surface (3) in a skirt-spreading manner. ) The nozzle device for scale removal in which the jetting direction in the entire range is directed to either one of the moving path width directions of the flat surface (3) in plan view. 2. The scale removing nozzle device according to claim 1, wherein the jetting direction in the entire range of the jetting angle (B) is directed to the upper side of the movement path of the flat surface (3) in a plan view. 3. A plurality of the nozzles (5) are arranged side by side in the width direction of the movement path of the flat surface (3), and these nozzles (5) are placed under high pressure water (4) with respect to the flat surface (3). The collision range (A) of the nozzle (5A) is arranged on one side of the movement path of the flat surface (3), and the collision range (A) is the other side of the movement path of the flat surface (3). The nozzle (5B) arranged in the crocodile is divided into two, and the injection direction in the entire range of the injection angle (B) of the nozzle (5A) in which the one side has the collision range (A) is a plane. The one side of the nozzle (5B) in which the one side is directed to the crocodile and the other side of the crocodile is the collision range (A) is arranged. The nozzle device for scale removal according to claim 1 or 2, which is directed to the.