JPS63165009A - Manufacturing device for shape stock having flange - Google Patents

Abstract

PURPOSE:To simply spread the web width of an H shape steel stock by installing a both side edger integrated horizontal roll type spreader unit, a cantilever horizontal roll for web rolling, and a segmented cantilever horizontal roll type spreader unit on the pass line of a stock for a universal rolling mill to roll an H shape steel stock. CONSTITUTION:A both side edger integrated horizontal roll type spreader unit rolling an H shape steel stock consists of both a horizontal roll 4 rolling the web of the stock and a cantilever vertical roll 5 forming flange parts supported by a vertical roll supporting part 3 set on the back face of a horizontal roll supporting part 2 of a roll chock 1 being closely installed to each other. Respective plural units of the above unit, a cantilever horizontal roll 14 rolling the web part of the stock supported by a horizontal roll supporting part 12, and a segmented cantilever horizontal roll type spreader unit closely positioned to a cantilever vertical roll 15 are alternately or optionally combined each other and installed on the pass line of the stock so that a distance (l) between vertical rolls 15 is sequentially changed from a smaller value to a larger value to roll the stock from an ingot with a web inside width optionally changed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is an apparatus for manufacturing a profile having a flange, which allows the inner width of the web to be easily increased.

[Prior Art] FIG. 12 is a diagram showing a conventional universal rolling method for H-section steel. For example, when manufacturing H-shaped steel by the universal rolling method, a rough-shaped steel piece that has been roughly formed in a breakdown mill (not shown) is rolled into a web by the horizontal rolls 31 of the intermediate universal mill shown in FIG. 12 (a). At the same time, the side wall of the horizontal roll 31 and the vertical roll 32 roll the flange.

The end portion of the flange is rolled using an edger roll 33 of an edger mill shown in FIG. 12(b). Figure 12 (
C) is a finishing universal mill, which performs finishing rolling after being rolled several times in an intermediate universal mill or an edger mill. In this universal rolling method,
The web is stretched in the rolling direction, but the rolling process to widen or adjust the web inner width (W in Figure 12 (d)) is not performed. When changing the shape, each horizontal roll is replaced with another horizontal roll that matches the web width W of the rough shaped steel billet or H shaped steel. Shaped steel is manufactured, but the work of rearranging the horizontal rolls every time the W dimension changes is extremely repetitive, and a large number of horizontal rolls must always be kept on hand. JP-A-53-84856, JP-A-53-83961, regarding a method of not changing the horizontal roll even if the inner web width W of H-shaped steel to be rolled changes.
The technique disclosed in Japanese Patent Publication No. 58-57244 is known.

This method is a method in which the inner width W of the web is stretched by pulling and stretching the web in the direction of the flange at the stage of forming a rough shaped steel piece or during an intermediate finishing process. However, although this method is suitable for slightly increasing the inner width of the web, it has the problem that, as will be described later, the thickness of the reweb is likely to be uneven when the web is locally stretched. As another method for changing the web width, JP-A No. 59-133902,
JP-A-59-178101 is known. That is, during the rolling process, the extra thickness 35 shown in FIG. 13(a) is formed on the web by rolling.

Next, this excess thickness is flat-rolled to widen the throat web as shown in FIG. 13(b). However, since the partial rolling of the excess thickness portion 35 in this method involves metal flow in the rolling direction of the excess thickness portion, the web surface corresponding to the excess thickness portion tends to become wavy after rolling. Since the amount corresponds to the amount of excess thickness, it is important to accurately form the amount of excess thickness in order to ensure the dimensional accuracy of the web inner width of the finished product. Rolling to form extra thickness is troublesome in a universal mill.

[Problem that the invention attempts to solve] The present invention allows the inner width of the web to be easily changed.

At the same time, the thickness of the web can be maintained uniformly. The purpose is to manufacture profiles with flanges.

[Means for Solving the Problems] Fig. 1 is an example of a horizontal roll integrated dual-support type widening unit according to the present invention, and (a) is a front view perpendicular to the passing direction of the section;
B) is a side view of (A), (C) is a view showing a B-B end face, and (D) is a view showing a C-C end face. Fig. 2 shows an example of the horizontal roll split cantilever type widening unit of the present invention.
A) is a front view, (B) is a side view, (C) is a BB end view, and (D) is a C-C end view. FIG. 3 is a front view of an example of the barrier roll widening unit of the present invention.

(1) Claim (1) will be explained.

As shown in FIG. 1, the present invention includes a horizontal roll 4 that is pivotally supported at both ends by a horizontal roll support 2 provided on a roll chock 1 and presses the web in the thickness direction, and a horizontal roll 4 provided on the rear surface of the horizontal roll support 2 of the roll chock 1. A cantilevered vertical roll 5 is pivotally supported by the vertical roll support part 3 and abuts against the inner surface of the flange to widen the inner width of the web.
and were placed close together. A horizontal roll integrated double-support type widening unit made of a profile having flanges, and a cantilevered horizontal roll 14 that is pivotally supported by a horizontal roll support part 12 provided on the roll chock 11 in FIG. 2 and presses the web in the thickness direction. A flange is provided with a cantilevered vertical roll 15 which is pivotally supported by a vertical roll support part 13 provided on the rear surface of the horizontal roll support part 12 of the roll chock 11 and which abuts against the inner surface of the flange to widen the inner width of the web. horizontal roll split cantilever type widening units of the profile are alternately aligned with the pass line of the profile, or in appropriate combinations, and the vertical roll interval Q shown in Fig. 1 or 2 is from the entry side to the exit of the profile. This is an apparatus for manufacturing a profile having a flange, characterized by a plurality of units arranged from small to large on one side.

(2. Claim (2) will be explained.

As shown in FIG. 1, the present invention includes a horizontal roll 4 that is pivotally supported at both ends by a horizontal roll support 2 provided on a roll chock 1 and presses the web in the thickness direction, and a horizontal roll 4 provided on the rear surface of the horizontal roll support 2 of the roll chock 1. A cantilevered vertical roll 5 is pivotally supported by the vertical roll support part 3 and abuts against the inner surface of the flange to widen the inner width of the web.
and a horizontal roll integrally supported type widening unit having flanges arranged in close proximity to each other, and a roll chock 2 shown in Fig. 3.
The piece-shaped roll support part 22 provided in 1, or 22 and 2
3 has a piece-shaped roll 24 that is pivotally supported at an angle, and a backup roll 26 that is pivotally supported by a backup roll support part 25 provided on the roll chock 21 and backs up the piece-shaped roll, and the left and right piece-shaped rolls 24 and the backup roll 26 press against each other to bring the piece roll into contact with the inner surface of the flange of the section having a flange and the web to pressurize the web and at the same time widen the inner width of the web. A plurality of units are arranged alternately or in appropriate combinations along the pass line of the profile, and the roll spacing shown in Figures 1 or 3 increases from small to large from the input side to the output side of the profile. This is an apparatus for manufacturing a profile having a flange, which is characterized by the following. In addition, in Figure 3, the shaft supports 22 and 25
The roll chock 21 with the shaft support 23 and the roll chock 21 with the pivot support 23 are connected, for example, on the front side and the back side of the paper surface of the figure to form one roll chock 21.
Omitting the inner roll chock where the shaft support 23 is arranged,
The left and right piece-shaped rolls 24 may have a cantilever structure, or the third
As shown in the drawing, the piece-shaped roll has a shape in which the bottom surfaces of two truncated cones are joined to each other, and is a so-called solo bread ball-shaped roll.

[Operation, Examples] Figure 4 is a diagram showing the operation of the horizontally supported widening unit of the present invention, (a) is a diagram showing the state in which the inner width of the web of the H-section steel is widened, and (b) ) is its A-A end view, (c) is its B-
B is an end view, in this example, the four cantilever vertical rolls 5 are in contact with the inner surface of the flange 7 of the H-section steel, and the web 6 is expanded to a width of Q. There is. At this time, the hatched portion 10 of the web in FIG. 4(a) is subjected to tension processing when only the vertical rolls 5 are used, so that the web tends to be locally stretched and the web thickness becomes non-uniform.

The two horizontally supported lateral rolls 4 press the web in the thickness direction near the center of its width. In the present invention, the vertical rolls 5 and the horizontal rolls 4 are arranged close to each other. In general, the amount of expansion ΔW is determined by the geometrical positional relationship between the roll and the material, and the components of the amount of expansion separated by the expansion mechanism are expressed as shown in the following equation.

Amount of width expansion ΔW = Amount of expansion due to reduction of excess thickness 10 Width expansion due to stretching of excess thickness Quantum Amount of expansion due to web stretching other than the excess thickness 2 When the stretching width increases, the web thickness becomes uneven. , a constriction occurs in the cross section, and if the stretching width is further increased, it will lead to web breakage.On the other hand, if the web width is expanded only by reducing the excess thickness, metal flow will occur in the rolling direction in the area of excess thickness reduction. The web surface, which is restrained from stretching in the rolling direction, is likely to buckle and become wavy.If the vertical rolls 5 and horizontal rolls 4 perform stretching and width reduction at the same time as in the present invention, the stretching action will cause the inside of the material to buckle and become wavy. The stress acting on the material and the stress acting on the inside of the material due to the reduction of excess thickness are mutually balanced, resulting in smooth deformation.
The web thickness becomes uniform. Furthermore, as an accompanying effect, there is no problem of abnormal material deformation or surface flaws caused by widening, and the load and processing energy required for width widening are reduced.

The horizontal rolls 4 also have the function of accurately guiding the H-section steel to the vertical rolls 5. In Figure 4 (b), web 6
In order to effectively widen the width of the web 6, it is desirable that the vertical roll 5 be as close to the web 6 as possible, that is, the gap g between the web and the side surface of the vertical roll in FIG. The horizontal side surface of the web 6 contacts the web 6, making it difficult for the H-section steel to pass through.

In order to accurately position the web of H-shaped steel with respect to the horizontal side surface of the vertical roll 5, the horizontal roll 4 can narrow the gap g shown in (B) and effectively widen the inner width of the web. It is beneficial for

FIG. 5 is a diagram showing the operation of the horizontal roll split cantilever type widening unit of the present invention. In this unit, cantilever horizontal roll 1
4 applies pressure to the web near the flange in the thickness direction, and similarly to the horizontal roll integrated width expanding unit, this pressure is preferable to keep the web thickness uniform and to spread it smoothly.

FIG. 6 is a diagram showing the action of the piece-type roll widening unit of the present invention, in which (A) is a schematic front view as seen from the rolling direction in the direction of arrow E, and (B) is a schematic plan view of the roller in the direction of arrows. . In the figure, a indicates the upper surface of the barrier roll 24, b indicates its maximum diameter surface, C indicates its lower surface, and the diagonal lines indicate H-beams. The b side of the barrier roll is H
It initially contacts the inner surface of the flange of the section steel at point d, and as the barrier roll rotates (the H section moves forward), point d on the bridge roll reaches point e, changing the web inner width of the H section from Ql to Q2. Expand. In addition, in this unit, the conical surface f formed between the b surface and the 0 surface of the barrier roll is horizontal in order to pressurize the web portion adjacent to the flange in the web thickness direction during the process of widening the web. As in the case of the roll split cantilever type spreading unit, it is preferable to keep the web thickness uniform and spread the web smoothly.

Figure 7 is a diagram showing an example of the effect of each width expanding unit of the present invention, and shows the deviation in web thickness when the inner width of the web is expanded using H-section steel of H250 x 90 x 5/9. .

Line B in the figure is an example of the case where the web is expanded only by the vertical rolls 5 in Fig. 4 without applying pressure in the thickness direction. The line A in the figure shows each unit example of the present invention in which pressure is applied in the web thickness direction to the width expanding device B, and the width of the inner width of the web increases. Even if the amount increases, the deviation in web thickness is small and the web thickness is kept uniform.

FIG. 8 is a first example of the device of the present invention, and is a plan view showing the expanded width of the section steel 10 by each roll.
... is a horizontal roll split cantilever type width expansion unit, P
,, P, . . . are horizontal roll-integrated double-support type widening units. In FIG. 8, the section steel 10 is vertically rolled 5. and 1
5, the width is expanded over multiple stages. At this time, horizontal roll 4
and 14 press the web in the web thickness direction, but the horizontal roll 4 also presses the part near the center of the width of the web.
4 pressurizes the part of the web near the flange.

According to this device, the web is pressurized evenly in the web thickness direction and is expanded in multiple stages by the vertical rolls 5 and 15, so it is possible to increase the amount of expansion while keeping the web thickness uniform. I can do it.

FIG. 9 is a second example of the device of the present invention, and is a plan view showing a state in which the section steel 10 is expanded by each roll.

In the figure, R1, R, . . . are piece-shaped roll widening units.

P engineering, P2. . . . is a horizontal roll-integrated width expanding unit.

Similar to the device shown in FIG. 8, this device also maintains a uniform web thickness because the web is spread in multiple stages by the vertical rolls 5 and barrier rolls 24 while being evenly pressurized in the web thickness direction. Therefore, the amount of expansion can be increased.

Fig. 8 is an example in which Q units and P units are arranged alternately for each unit.
The number and arrangement of units may be selected as appropriate. Further, the number and arrangement of the R units and P units shown in FIG. 9 may be selected as appropriate.

In Figures 8 and 9, the roll chocks of each unit are attached to a fixed housing or frame (not shown), but the fixed housing or frame is provided with a groove for installing the roll chock, and each unit is fitted into the fixed housing or frame. When the roll unit is installed in a fixed manner, it is preferable for work because the roll unit can be quickly replaced when the roll wears out or when changing to widening a section steel of a different size.

The apparatus of the present invention can also be used by being placed in a reverse rolling line or continuous rolling line for section steel. When placed on a reverse rolling line, in the middle pass, the device formed as an integral part is retracted, for example, to the right of the pass line to open the pass line, and in the final pass, it is set in a predetermined position to widen the width. A frame 31 and 32 divided into upper and lower halves, which can be rolled and which can hold the apparatus of the present invention in a predetermined position with high rigidity while being vertically movable, as shown in FIG. 10, for example.
When installed, the frame can be moved vertically during intermediate passes to open the pass line, and then set at a predetermined position during the final pass for widening rolling.

When each roll of the present invention is not driven, the present invention is placed, for example, between a universal mill and an edger mill, and when the tip of the material is pushed into the device of the present invention, the roll of the present invention is placed between the mill located at the front stage of the device of the present invention. It is sufficient to use the pushing force, and after the rear end of the material has kicked out the previous stage mill, the pulling force of the latter stage mill can be used.

When placed in a continuous rolling line, it is best to place it in front of the finishing mill. FIG. 11 is an example in which the present invention is applied to channel steel. Although the present invention has been explained in detail using H-beam steel as an example,
As is clear from Fig. 11, the present invention can be used as a manufacturing device for steel sections having flanges other than H-section steel, and can also be applied to materials other than steel. This is the object of the present invention.

[Effects of the Invention] According to the present invention, it becomes possible to easily change the inner width of the web of a section having a flange. Also, by this method, a profile with a uniform web thickness and good dimensional accuracy can be manufactured. In the present invention, since the width is expanded multiple times, the amount of expansion of the inner width of the web of the profile is large.

Further, in the present invention, if each unit is made into a replaceable cassette type unit, the device can be used in common with many shapes having nine different dimensions.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a horizontal roll integrated double-support type widening unit of the present invention, FIG. 2 is a diagram showing an example of a horizontal roll split cantilever type widening unit of the present invention, and FIG. 3 is a diagram showing an example of the horizontal roll split cantilever type widening unit of the present invention. Fig. 4 is a diagram showing the operation of the horizontal roll integrated double-support type width expansion unit of the present invention, and Fig. 5 is a diagram showing an example of the horizontal roll split cantilever type width expansion unit of the present invention. FIG. 6 is a diagram showing the operation of the piece-type roll widening unit of the present invention. FIG. 7 is a diagram showing the effect of the present invention. FIG. 8 is a first example of the device of the present invention. FIG. 9 is a plan view showing the widening state of the shaped material by each roll, FIG. Fig. 11 is a diagram showing an example of unit connection; Fig. 11 is a diagram showing an example of using the device of the present invention for a section steel having a flange other than H-section steel; Fig. 12 is a diagram showing a normal universal rolling method; FIG. 13 is a diagram showing an example of a conventional technique.

Claims (2)

[Claims] (1) A horizontal roll 4 whose both ends are pivotally supported by a horizontal roll support 2 provided on the roll chock 1 and pressurizes the web in the thickness direction, and a vertical roll support provided on the rear surface of the horizontal roll support 2 of the roll chock 1. A horizontal roll-integrated width expanding unit of a profile having a flange, in which a cantilevered vertical roll 5 which is pivotally supported by a section 3 and abuts against the inner surface of the flange to widen the inner width of the web is disposed in close proximity to the horizontal roll widening unit, and a roll chock. A cantilevered horizontal roll 14 is pivotally supported on a horizontal roll support 12 provided in the roll chock 11 and presses the web in the thickness direction, and a vertical roll support 13 provided on the rear surface of the horizontal roll support 12 of the roll chock 11 is pivoted. A horizontal roll split cantilever type widening unit for a profile having a flange, in which a cantilever vertical roll 15 is disposed close to the cantilever vertical roll 15 for widening the inner width of the web by contacting the inner surface of the flange, is connected to the pass line of the profile. 1. A manufacturing apparatus for a shaped material having a flange, characterized in that a plurality of units are arranged alternately or in appropriate combination so that the vertical roll interval 1 gradually increases from small to large from the input side to the exit side of the shaped material. (2) A horizontal roll 4 whose both ends are pivotally supported by a horizontal roll support 2 provided on the roll chock 1 and pressurizes the web in the thickness direction, and a vertical roll support provided on the rear surface of the horizontal roll support 2 of the roll chock 1. A horizontal roll-integrated width expanding unit of a profile having a flange, in which a cantilevered vertical roll 5 which is pivotally supported by a section 3 and abuts against the inner surface of the flange to widen the inner width of the web is disposed in close proximity to the horizontal roll widening unit, and a roll chock. A piece-shaped roll 24 that is tilted and pivotally supported by a piece-shaped roll support 22 provided at 21 or 22 and 23, and a backup roll support 25 provided on a roll chock 21 to back up the piece-shaped roll. It has a backup roll 26, and when the left and right piece-shaped rolls 24 and the backup rolls 26 press against each other, and the piece-shaped rolls are brought into contact with the inner surface of the flange of the section having a flange and the web to press the web. At the same time, piece-type roll widening units that widen the inner width of the web are arranged alternately or in appropriate combinations on the pass line of the profile, and the roll interval l gradually increases from small to large from the input side to the exit side of the profile. A manufacturing device for a profile having a flange, which is characterized by having multiple units arranged in the flange.