JP2016198790A - Flaw removal device for steel material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flaw removal device for a steel material which has simple structure, is easily adjusted and maintained, and which does not generate a flaw in a product without using a rotation mechanism and a pump, etc.SOLUTION: The flaw removal device for a steel material is provided which comprises: a metal wire brush 1 arranged in a line through which a material 7 to be rolled passes; and a support part 2 for supporting the wire brush 1, and in which since the wire brush 1 is supported by the support part 2 and arranged in such a way that the tip part of the wire brush 1 contacts the material 7 to be rolled, the tip part of the wire brush 1 supported by the support part 2 contacts a flaw generated in the surface of the material to be rolled, the flaw is swept away by the tip part of the brush, and the flaw is removed by conveying the material 7 to be rolled by a rolling mill. Consequently, unlike the conventional case, the flaw removal device has simple structure only with the brush and the support part, the flaw removal device is easily adjusted and maintained, and does not generate the flaw in a product without having a rotation mechanism and a pump, etc.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a steel material flaw removing apparatus that removes flaws generated on the surface of a steel material such as shaped steel produced by rolling.

As shown in FIG. 9, in the hot rolling of a shape steel manufactured by a roll having a hole shape, for example, a steel sheet pile, a steel material having a quadrilateral cross section is heated in a heating furnace R, and the steel material is roughly rolled. Using M1, intermediate rolling mill M2, and finish rolling mill M3, using rolls having about 3 to 5 hole molds for each mill, and a total of about 8 to 10 hole molds, 1 to 3 holes for each hole mold This is done by applying a degree of reduction.
The hole mold of the roll used for the hot rolling of the steel sheet pile (steel material) is designed so that the rolled steel material is properly filled and a predetermined shape can be formed. However, the fillability to the hole mold is easily influenced by the chemical composition of the steel material and the rolling condition, and the end ridge K having a length of several tens of centimeters to several meters as shown in FIG. ) Occurs. This edge part K is continuously or randomly generated in the length direction of the product (steel sheet pile product) S, and has an adhesive force that can be removed with pliers or the like. In addition, it is desirable that the steel sheet pile product does not have this edge flaw in appearance. For this reason, manual removal of inspection personnel or maintenance personnel has been carried out until now, but this is a cause of hindering factory labor saving and productivity improvement.

Therefore, as examples of the wrinkle removal device that automatically removes the surface wrinkles of a product regardless of manual work, those described in Patent Document 1 and Patent Document 2 are known.
The wrinkle removal apparatus described in Patent Document 1 includes a cutter unit having a rotary blade for cutting the buttock, and the heel portion is removed by cutting the buttock with the rotary blade of the cutter unit. Yes.
Moreover, in the wrinkle removal apparatus described in Patent Document 2, the wrinkle portion is removed by spraying high-pressure water on the wrinkle portion.

JP-A-53-107793 Japanese Utility Model Publication No. 63-19902

However, in the wrinkle removal apparatus described in Patent Document 1, there is a possibility that parts other than the hook portion may be accidentally shaved by the rotary blade, and the rotation mechanism is essential and maintenance of the rotary blade is required, which makes management complicated. Become.
In addition, since the soot removal device described in Patent Document 2 requires a high-pressure pump that generates high-pressure water, the rolling equipment is excessively large and the maintenance of the equipment is required, which makes management complicated.
As described above, in any of the soot removal apparatuses, the introduction and maintenance of facilities are required, resulting in a considerable cost increase.

  The present invention has been made in view of the above circumstances, and does not use a rotating mechanism or a pump, has a simple structure, is easy to adjust and maintain, and does not generate flaws in a product. The purpose is to provide.

In order to achieve the above object, the steel material flaw removal apparatus of the present invention is a steel material flaw removal apparatus that removes flaws generated in a steel material formed by rolling a material to be rolled by a rolling mill,
A metal brush disposed on a line through which the material to be rolled passes, and a support portion for supporting the brush,
The brush is arranged such that a tip portion thereof is in contact with the material to be rolled.

In the present invention, by conveying the material to be rolled by a rolling mill, the tip of the brush supported by the support portion contacts the wrinkle generated on the surface of the material to be rolled, and the wrinkle is formed by the tip of the brush. The wrinkle is removed as if paying.
Therefore, unlike conventional ones, without using a rotating mechanism or a pump, a simple structure with only a brush and a support portion is provided, adjustment and maintenance are easy, and no flaws are generated in the product (steel material).

  The said structure of this invention WHEREIN: The said brush is a wire-like brush, This wire-like brush may be supported by the said support part in the state which orient | assigned the front-end | tip part of the said brush to the said to-be-rolled material side. .

  According to such a configuration, since the brush is a wire-like brush, the brush can be easily arranged and supported by the support portion corresponding to the portion where the wrinkles of the material to be rolled occur.

  Moreover, in the said structure of this invention, the said brush is a wheel-shaped brush, and this wheel-shaped brush can be rotated in the state which orient | assigned the outer peripheral edge of the said brush to the said to-be-rolled material side by the said support part. It may be supported.

  According to such a configuration, since the brush is a wheel-like brush and is rotatably supported by the support portion, the wrinkles of the material to be rolled are removed while the brush is rotated by conveying the material to be rolled. In addition, by rotating, a new brush portion comes into contact with the material to be rolled, and the maintenance work can be saved.

  Moreover, in the said structure of this invention, a brush is a cup type brush, and this cup type brush is rotatably supported by the said support part in the state which orient | assigned the front-end | tip part of the said brush to the said to-be-rolled material side. It may be.

  According to such a configuration, since the brush is a cup-type brush and is rotatably supported by the support portion, the wrinkles of the material to be rolled are removed while the brush is rotated by conveying the material to be rolled. In addition, by rotating, a new brush portion comes into contact with the material to be rolled, and the maintenance work can be saved.

  According to the present invention, since the metal brush and the support portion that supports the brush are provided, unlike the conventional case, a simple structure including only the brush and the support portion is used without using a rotation mechanism or a pump. It is easy to adjust and maintain, and does not cause wrinkles in the product.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic structure of the steel flaw removal apparatus which concerns on the 1st Embodiment of this invention is shown, (a) is a front view, (b) is an AA arrow directional view in (a). It is sectional drawing which shows the joint part of the steel sheet pile formed by rolling. It is a side view which shows the modification of 1st Embodiment. The schematic structure of the steel material flaw removal apparatus which concerns on the 2nd Embodiment of this invention is shown, (a) is a front view, (b) is an AA arrow directional view in (a). It is a front view which shows the modification of 2nd Embodiment. The schematic structure of the flaw removal apparatus of the steel materials which concerns on the 3rd Embodiment of this invention is shown, (a) is a front view, (b) is an AA arrow directional view in (a). It is a front view which shows the modification of 3rd Embodiment. It is for demonstrating the Example of this invention, and is a graph which shows the incidence rate of an edge flaw. It is a side view which shows schematic structure of the rolling mill provided with the some rolling mill. It is a perspective view which shows the edge part ridge which arises in the steel sheet pile formed by rolling with a steel sheet pile.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a steel material flaw removing apparatus according to the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 shows a schematic configuration of a steel material flaw removal apparatus (hereinafter referred to as a flaw removal apparatus) according to a first embodiment, wherein (a) is a front view and (b) is an AA view in (a). FIG.

This wrinkle removal apparatus removes wrinkles generated in a steel material formed by rolling the material to be rolled by a rolling mill. In the present embodiment, the case where the steel material is a steel sheet pile will be described as an example. .
When the material to be rolled is rolled by a rolling mill to form a steel sheet pile, as described above, end ridges having a length of several tens of centimeters to several meters are continuous in the length direction of the steel sheet pile, as described above. Or, since it occurs randomly, the edge wrinkles are removed by the wrinkle removing apparatus of the present embodiment.
Moreover, when rolling a to-be-rolled material with a rolling mill and forming a steel sheet pile, as mentioned above, since it rolls with a total of about 8-10 hole mold | types, a wrinkle removal apparatus is the material of the roll material in each hole mold | type. Although it is preferable to install in the vicinity of the exit side, in order to efficiently remove the edge flaws, it may be installed in the vicinity of the exit side of the material to be rolled in the final hole mold.

  As shown in FIG. 1, the wrinkle removal apparatus according to the present embodiment includes a metal brush 1 disposed on a line through which the material to be rolled 7 passes, and a support portion 2 that supports the brush 1. Yes. Moreover, the brush 1 and the support part 2 are provided in a pair of left and right with the material 7 to be rolled sandwiched in the width direction. In FIG. 1, reference numeral 3 indicates an upper roll, reference numeral 4 indicates a lower roll, reference numeral 5 indicates a side surface rolling guide, and reference numeral 6 indicates a table roller.

The brush 1 is a brush formed by unwinding the ends of wires that are bundled with thin wires and bundled thickly, but may be a normal wire brush.
Further, the brush 1 is formed in a substantially cylindrical shape, and is arranged such that the brush-shaped tip (lower end) is in contact with the material 7 to be rolled. The diameter of the brush 1 is large enough to cover a portion where end flaws are likely to occur, that is, as shown in FIG. 2, the joint tip S1 where end flaws of the steel sheet pile (rolled material) 7 are likely to occur and It is preferable that the length is equal to or longer than the length d that covers the joint shoulder S2.

  Moreover, the tip position of the brush 1 may be set to a position that protrudes about 20 to 30 mm from the edge wrinkle generation surface of the material 7 to be rolled, and the position may be adjusted depending on the state of occurrence of the end wrinkles. Since what is formed by rolling in this Embodiment is a steel sheet pile, as shown in FIG. 1, the length a between the upper end surface of a joint part and the front-end | tip of the brush 1 is set to about 20 mm, and an end part The position is adjusted by moving the brush 1 in the directions b and c according to the state of wrinkles.

Such a position adjustment of the brush 1 is performed by the support portion 2. That is, the support portion 2 includes a cylindrical holding body 2a that holds the brush 1 in a state where the brush 1 is inserted, an arm 2b fixed to the outer peripheral portion of the holding body 2a, and a support body 2c that supports the arm 2b. ing.
The holding body 2a has an inner diameter into which the brush 1 can be inserted, and a fixing bolt 2d is screwed into the outer peripheral portion. The tip of the fixing bolt 2d can be projected and retracted from the inner peripheral surface of the holding body 2a by rotating the fixing bolt 2d in the forward and reverse directions.
Then, by rotating the fixing bolt 2d in the forward direction and pressing the brush 1 at its tip to press it against the inner peripheral surface of the holding body 2a, the brush 1 is fixed and the fixing bolt 2d is rotated in the reverse direction. Then, after loosening the fixing of the brush 1, the position of the c direction can be adjusted by moving the brush 1 in the c direction. Note that the brush 1 is fixed by rotating the fixing bolt 2d in the positive direction after the position adjustment.

The arm 2b is formed in a columnar shape or a prismatic shape, and is arranged substantially horizontally. The vertical center of the holding body 2a is fixed to the tip of the arm 2b by welding or the like.
The support 2c is composed of a side surface rolling guide 5 that guides the conveyance of the material 7 to be rolled, and an insertion hole for inserting the arm 2b is formed at the upper end of the support 2c. The insertion hole is formed in a cylindrical shape or a rectangular tube shape according to the cross-sectional shape of the arm 2b, and the arm 2b is inserted into the insertion hole so as to be slidable in the longitudinal direction (direction b in FIG. 1).
A fixing bolt 2e is screwed into the upper end of the support 2c. The tip of the fixing bolt 2e can be projected and retracted from the inner peripheral surface of the insertion hole by rotating the fixing bolt 2e in the forward and reverse directions.
Then, the fixing bolt 2e is rotated in the forward direction, the arm 2b is pressed at the tip thereof and pressed against the inner peripheral surface of the insertion hole, thereby fixing the arm 2b, and the fixing bolt 2e is rotated in the reverse direction. The position of the brush 1 held by the holding body 2a in the b direction can be adjusted by moving the arm 2b in the b direction after loosening the arm 2b. Note that the arm 2b is fixed by rotating the fixing bolt 2e in the forward direction after the position adjustment.

In the wrinkle removal apparatus having such a configuration, the material 7 to be rolled is rotated in the direction perpendicular to the paper surface in FIG. 1A (left and right in FIG. 1B) by the rotation of the upper roll 3, the lower roll 4 and the table roller 6. The tip of the brushes 1 and 1 are brought into contact with the surface of the material 7 to be rolled (the surface of the joint), and the brushes 1 and 1 rub off the edge of the edge. Removed. At this time, a wrinkle can be efficiently removed by making the conveyance speed of the to-be-rolled material 7 into 4-8 m / s. Thereby, an end flaw can be removed continuously over the steel sheet pile product full length.
Moreover, since the brush 1 can adjust the position of b direction (width direction of the to-be-rolled material 7) and c direction (up-and-down direction) by the support part 2, the part which the edge part wrinkles of the to-be-rolled material 7 tends to generate | occur | produce. Thus, the brush 1 can be easily disposed and the edge flaws can be reliably removed.

FIG. 3 is a diagram showing a modification of the first embodiment. In this modification, the brush 1 is inclined obliquely with respect to the traveling direction of the material to be rolled (the left-right direction in FIG. 3). Thus, in order to incline the brush 1, for example, the arm 2b is formed in a columnar shape, and the insertion hole of the support body 2c through which the arm 2b is inserted is formed in a cylindrical shape, and the arm inserted into the insertion hole After rotating 2b around the axis by a predetermined angle, it may be fixed by the fixing bolt 2e.
By inclining the brush 1 in this manner, the tip end portion of the brush 1 can easily go under the end ridge, and the end ridge can be removed more reliably.

(Second Embodiment)
FIG. 4 shows a schematic configuration of a steel material flaw removal apparatus (hereinafter referred to as a flaw removal apparatus) in the second embodiment, where (a) is a front view and (b) is an AA view in (a). FIG.
Since the difference between the wrinkle removal apparatus of the present embodiment and the wrinkle removal apparatus of the first embodiment is the configuration of the brush, this point will be described below, and other common parts are denoted by the same reference numerals. The description is omitted or simplified.

As shown in FIG. 4, the wrinkle removal apparatus according to the present embodiment includes a metal wheel-shaped brush 11 disposed on a line through which the material to be rolled 7 passes, and a support portion 2 that supports the brush 11. It has. Moreover, the brush 11 and the support part 2 are provided in a pair of left and right with the material 7 to be rolled sandwiched in the width direction.
The brush 11 is a wire wheel brush 11, and this wire wheel brush 11 is supported by the support portion 2 so as to be rotatable in a state where the outer peripheral edge portion of the wire wheel brush 11 faces the joint portion side of the material 7 to be rolled. ing. The wire wheel brush 11 is formed by fixing a brush 11b made of a number of metal wires extending in the radial direction on the outer periphery of a disc-shaped wheel 11a.

  It is not necessary to use a special wire wheel brush 11 and it is sufficient to use a commercially available one. The diameter and thickness of the wire wheel brush 11 should just be a magnitude | size which covers the location where the edge part flaw of the to-be-rolled material 7 tends to generate | occur | produce, ie, the surface of a joint part. Since the tip of the brush 11b is shortened due to wear, it is preferable that the position of the central portion of the wire wheel brush 11 can be adjusted when worn. As with the first embodiment, the tip position of the brush 11b is set to a position that protrudes about 20 to 30 mm from the end surface wrinkle generation surface (joint surface) of the material 7 to be rolled, and the generation state of the end surface wrinkles The position may be adjusted by

Here, an attachment structure for attaching the wire wheel brush 11 to the support portion 2 will be described.
That is, first, a female thread portion is formed on the distal end surface of the arm 2 b of the support portion 2. A cylindrical through hole is formed at the center of the wheel 11a, and the arm 2b is inserted into the through hole so as to be relatively slidable from one side surface of the wheel 11a. Is supported rotatably about the arm 2b as a rotation axis.
A flange 11c that is coaxial with the through hole and larger in diameter than the through hole is fixed to the other side surface of the wheel 11a, and a fixing bolt 2d is inserted into a hole formed at the center of the flange 11c. The wire wheel brush 11 is rotatably attached to the support portion 2 by screwing the fixing bolt 2d into the female screw portion of the arm 2b.

Moreover, in order to adjust the position of the center part of the wire wheel brush 11 in the up-down direction (c direction), for example, it may be configured as follows, but is not limited thereto.
That is, first, a long hole that is long in the vertical direction is formed in the upper end portion of the support 2c, and the arm 2b is inserted into the long hole so as to be movable up and down. A spring member is provided on the lower surface of the long hole, and the arm 2b is biased upward by this spring member.
On the other hand, a fixing bolt 2e is screwed into the upper end portion of the support 2c. The tip of the fixing bolt 2e can be projected and retracted from the upper surface of the elongated hole by rotating the fixing bolt 2e in the forward and reverse directions.
Then, the fixing bolt 2e is rotated in the forward direction, and the arm 2b is clamped between the fixing bolt 2e and the spring member by pressing the arm 2b downward against the biasing force of the spring member at the tip thereof. Thus, the arm 2b is fixed.

Therefore, by rotating the fixing bolt 2e in the forward direction, the arm 2b moves downward against the biasing force of the spring member, and by rotating the fixing bolt in the reverse direction, the arm 2b is biased by the spring member. Therefore, the vertical position of the central portion of the wire wheel brush 11 attached to the arm 2b can be adjusted by the fixing bolt 2e.
Further, when adjusting the position of the wire wheel brush 11 in the b direction, the fixing bolt 2e is rotated in the reverse direction to loosen the arm 2b, and then the arm 2b is moved in the b direction so that the arm 2b The position in the b direction of the attached wire wheel brush 11 can be adjusted. Note that the arm 2b is fixed by rotating the fixing bolt 2e in the forward direction after the position adjustment.

In this Embodiment, you may install the wire wheel brush 11 so that it may rotate simultaneously, when the to-be-rolled material 7 contacts a brush front-end | tip. Friction inevitably occurs between the wire wheel brush 11 and the rotating shaft (arm 2b), and a certain rotational resistance acts on the wire wheel brush 11, so that the wire wheel brush 11 is transported by the conveyance of the material 7 to be rolled. By rotating, the tip of the wire wheel brush 11 becomes a resistance for removing the edge wrinkles of the material 7 to be rolled, and the end wrinkles can be removed.
However, when the rotational resistance acting on the wire wheel brush 11 is small, the tip of the brush may not be a resistance for removing the edge wrinkles and the end wrinkles may not be removed. For this reason, the wire wheel brush 11 does not rotate when the portion of the joint portion of the material 7 to be rolled without end wrinkles comes into contact with the brush tip, and the brush tip ends when the end wrinkle comes into contact with the brush tip. On the other hand, it is preferable to adjust and install so as to be rotated by the conveyance of the material 7 to be rolled while it becomes a resistance for removing part defects.

This adjustment can be performed by adjusting the tightening force of the fixing bolt 2d that rotatably attaches the wheel 11a of the wire wheel brush 11 to the arm 2b of the support portion 2.
That is, as the fixing bolt 2d is rotated in the forward direction and tightened, the frictional force between the flange 11c and the head of the fixing bolt 2d increases, so that the rotation of the wire wheel brush 11 can be adjusted by adjusting the tightening force of the fixing bolt 2d. A desired rotational resistance can be imparted to.
Therefore, by adjusting the tightening force of the fixing bolt 2d, the wire wheel brush 11 does not rotate when the portion of the material 7 to be rolled without end wrinkles comes into contact with the brush tip, and the end wrinkle is in contact with the brush tip. The rotation resistance of the wire wheel brush 11 can be adjusted so that the tip of the brush becomes a resistance for removing the edge flaw when it comes into contact, while rotating by the conveyance of the material 7 to be rolled.

  If the tip of the wire wheel brush 11 is normally in contact with or not touching the surface of the joint portion of the material 7 to be rolled, the wire wheel brush 11 is in the surface of the joint portion in the portion where there is no end flaw. When the end scissors are moved by the conveyance of the material 7 to be rolled, the end scissors are completely touched to remove the end scissors, so that the fixing bolt 2d The tightening force may be adjusted as necessary.

By adjusting the rotational resistance of the wire wheel brush 11 in this way, the edge flaw of the material 7 to be rolled is removed, while a new brush portion of the wire wheel brush 11 is in contact with the material 7 to be rolled. Therefore, the maintenance work can be saved.
Also in this case, similarly to the first embodiment, the edge flaws can be efficiently removed by setting the conveyance speed of the material to be rolled to 4 to 8 m / s. Further, in order to efficiently remove the edge flaws, it is preferable to install the wrinkle removal device in the vicinity of the exit side of the material to be rolled in the final hole mold.
Moreover, since the wire wheel brush 11 can adjust the position of b direction (width direction of the to-be-rolled material 7) and c direction (up-down direction) with the support part 2, the edge flaw of the to-be-rolled material 7 generate | occur | produces. The wire wheel brush 11 can be easily disposed at an easy site, and the edge flaws can be reliably removed.

FIG. 5 is a diagram showing a modification of the second embodiment. In addition, the same code | symbol is attached | subjected to the wrinkle removal apparatus shown in FIG. 4, and the description is abbreviate | omitted.
In this modification, the wire wheel brush 11 is inclined with respect to the vertical direction so that the wire wheel brush 11 is in contact with the joint portion of the material to be rolled (steel sheet pile) 7 at an angle.
By tilting the wire wheel brush 11 in this way, the brush tip contacts not only the surface connecting the joint tip of the joint and the joint shoulder, but also the outer surface of the joint, so that the brush tip is wider. It becomes possible to remove the edge flaws in the area.

(Third embodiment)
FIG. 6: shows schematic structure of the steel material flaw removal apparatus (henceforth a flaw removal apparatus) in 3rd Embodiment, (a) is a front view, (b) is AA in (a). FIG.
Since the difference between the wrinkle removal apparatus of the present embodiment and the wrinkle removal apparatus of the first and second embodiments is the configuration of the brush, this point will be described below, and the other components are denoted by the same reference numerals. A description thereof will be omitted or simplified.

As shown in FIG. 6, the wrinkle removal apparatus of the present embodiment includes a metal cup-shaped brush 21 disposed on a line through which the material 7 to be rolled passes, and a support portion 2 that supports the brush 21. It has. Moreover, the brush 21 and the support part 2 are provided in a pair on the left and right sides with the material 7 to be rolled sandwiched in the width direction.
The brush 21 is a cup brush 21, and the cup brush 21 is rotatably supported by the support portion 2 in a state where the tip end portion of the cup brush 21 faces the joint portion side of the material 7 to be rolled. The cup brush 21 is formed by fixing a brush 21b made of a number of metal wires extending in the axial direction of the main body 21a to the outer peripheral edge of a circular cup-shaped main body 21a.

  It is not necessary to use a special cup brush 21, and it is sufficient to use a commercially available cup brush. Moreover, the cup brush 21 should just be a magnitude | size which covers the location where the edge part flaw of the to-be-rolled material 7 is easy to generate | occur | produce, ie, the surface of a joint part. Since the tip of the brush 21b becomes shorter due to wear, it is preferable that the position of the cup brush 21 can be adjusted up and down when worn. As in the first and second embodiments, the tip position of the brush 21b is set to a position that protrudes about 20 to 30 mm from the end surface wrinkle generation surface (surface of the joint portion) of the material 7 to be rolled. The position may be adjusted according to the state of occurrence of wrinkles.

Here, an attachment structure for attaching the cup brush 21 to the support portion 2 will be described.
That is, first, an insertion hole penetrating vertically is formed at the tip of the arm 2 b of the support portion 2. A shaft portion 21c is erected at the center of the main body portion 21a of the cup brush 21, and the shaft portion 21c is inserted through the through hole. A fixing bolt 2f is screwed into the side surface of the tip of the arm 2b, and the tip of the fixing bolt 2f can be projected and retracted from the inner peripheral surface of the insertion hole by rotating the fixing bolt 2f in the forward and reverse directions. ing.
Then, by rotating the fixing bolt 2f in the forward direction and pressing the shaft portion 21c at its tip to press it against the inner peripheral surface of the insertion hole, the shaft portion 21c is fixed, and the fixing bolt 2f is moved in the reverse direction. After rotating and loosening the fixing of the shaft portion 21c, the vertical position of the cup brush 21 provided rotatably at the lower end portion of the shaft portion 21c is adjusted by moving the shaft portion 21c in the vertical direction. It is possible. In addition, the shaft part 21c is fixed by rotating the fixing bolt 2f in the forward direction after this position adjustment.

In the present embodiment, as in the second embodiment, the cup brush 21 may be installed so as to rotate simultaneously when the material to be rolled 7 comes into contact with the brush tip. Friction inevitably occurs between the cup brush 21 and the shaft portion 21c, and a certain rotational resistance acts on the cup brush 21, so that the cup brush 21 is rotated by the conveyance of the material 7 to be rolled. The brush tip of the cup brush 21 becomes a resistance for removing the edge flaws of the material 7 to be rolled, and the end flaws can be removed.
However, if the rotational resistance acting on the cup brush 21 is small, the tip of the brush may not be a resistance for removing the edge wrinkles and the end wrinkles may not be removed. For this reason, the cup brush 21 does not rotate when the part of the joint portion of the material 7 to be rolled without end wrinkles comes into contact with the brush tip, and when the end wrinkles come into contact with the brush tip, the brush tip ends. While providing resistance for removing wrinkles, it is preferable to adjust and install so as to rotate by conveying the material 7 to be rolled.

  For example, the adjustment may be performed by forming a hole in the central portion of the main body portion 21a of the cup brush 21 and depending on the material or shape of the bearing when the shaft portion 21c is rotatably inserted into the hole via the bearing. However, the adjustment is not limited to this.

  In addition, if the tip of the brush 21b of the cup brush 21 is in such a state that it touches or does not touch the surface of the joint portion of the material 7 to be rolled, the cup brush 21 is the surface of the joint portion in the portion where there is no end flaw. When the end scissors are moved by the conveyance of the material 7 to be rolled, the end scissors are completely touched to remove the end scissors, so that the adjustment is performed as described above. Can be done as needed.

By adjusting the rotational resistance of the cup brush 21 in this manner, the edge flaw of the material 7 to be rolled is removed, while a new brush portion of the cup brush 21 comes into contact with the material 7 to be rolled and maintenance is performed. Can be saved.
Also in this case, similarly to the first and second embodiments, the edge flaws can be efficiently removed by setting the conveyance speed of the material to be rolled to 4 to 8 m / s. Further, in order to efficiently remove the edge flaws, it is preferable that the wrinkle removal device is installed in the vicinity of the exit side of the material to be rolled in the final hole mold.
Moreover, since the cup brush 21 can adjust the position of an up-down direction with the support part 2, the cup brush 21 can be easily arrange | positioned in the site | part where the end part wrinkles of the to-be-rolled material 7 are easy to generate | occur | produce, and end wrinkles reliably Can be removed.

FIG. 7 is a diagram showing a modification of the third embodiment. In addition, the same code | symbol is attached | subjected to the same component as the wrinkle removal apparatus shown in FIG. 6, and the description is abbreviate | omitted.
In this modification, the cup brush 21 is inclined with respect to the vertical direction so that the cup brush 21 is in contact with the joint portion of the material to be rolled (steel sheet pile) 7 at an angle.
By tilting the cup brush 21 in this way, the brush tip contacts not only the surface connecting the joint tip and joint shoulder of the joint, but also the outer surface of the joint, so that the brush tip is wider. It becomes possible to remove the edge flaws at

  In the first to third embodiments, an example of removing the wrinkles generated in the joint portion of the steel sheet pile, which is one of the steel materials formed by rolling, by the steel material wrinkle removal apparatus according to the present invention is taken as an example. Although demonstrated, this invention is applicable also when removing the wrinkles which generate | occur | produce in the other steel materials formed by rolling a to-be-rolled material with a rolling mill.

Next, an embodiment of the steel material flaw removal apparatus of the present invention will be described.
As a result of applying the steel material debris removal apparatus according to the first embodiment of the present invention to the rolling of 5L-type steel sheet piles, the accumulation of the edge debris removed in the water collection tank around the drought removal apparatus and in the lower part of the rolling mill It was confirmed that the edge flaws were removed.
In addition, using the steel material flaw removal apparatus according to the first embodiment, the occurrence rate of end flaws (= number of occurrence of end flaws / number of inspections) before and after the installation of the flaw removal measures over several months As a result of the investigation, as shown in FIG. 8, it was 3.7% before the installation, but 1.1% after the installation, and the occurrence rate of the edge flaws was reduced by 2.6%.

1 Wire brush (brush)
2 Supporting part 7 Material to be rolled 11 Wire wheel brush (wheel-shaped brush)
21 Cup brush (cup type brush)

Claims (4)

A steel material wrinkle removal device for removing wrinkles generated in a steel material formed by rolling a material to be rolled by a rolling mill,
A metal brush disposed on a line through which the material to be rolled passes, and a support portion for supporting the brush,
An apparatus for removing wrinkles of steel, wherein the brush is disposed such that a tip portion thereof is in contact with the material to be rolled. The brush is a wire-shaped brush;
2. The steel flaw removal apparatus according to claim 1, wherein the wire-like brush is supported by the support portion in a state in which a tip portion of the brush faces the rolled material side. The brush is a wheel-shaped brush;
The wheel-like brush is supported by the support portion so as to be rotatable in a state in which an outer peripheral edge portion of the brush is directed to the rolled material side. apparatus. The brush is a cup-type brush;
2. The apparatus for removing wrinkles of steel according to claim 1, wherein the cup-shaped brush is rotatably supported by the support portion in a state in which a tip portion of the brush faces the rolled material side. .

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