KR20100094632A - Twist guide apparatust for rolling mill and roolling mill apparatus of wire rod therewith - Google Patents

Abstract

PURPOSE: A twist guide apparatus for a rolling mill and a rolling mill system for a wire rod are provided to prevent damage to a rolled material during rolling by naturally twisting the rolled material discharged from a rolling mill and passing it to the next rolling mill smoothly. CONSTITUTION: A twist guide apparatus for a rolling mill comprises a first housing member(10), a second housing member(20), a guide roll member(30), a housing rotation control member(40), and a material guide member(50). The first housing member is installed in the exit side of the rolling mill. The second housing member has a path which a rolled material(1) is carried through. The guide roll member twists the rolled material to be passed to the next rolling mill. The housing rotation control member controls the rotation of the second housing member. The material guide member has a material guide path(50a) for guiding the rolled material to the guide roll member.

Description

Twist Guide Apparatust for Rolling Mill and Roolling Mill Apparatus of Wire Rod Therewith}

The present invention relates to a twist guide device for a rolling mill and a circular steel rolling device having the same. More particularly, the present invention has been invented so as to smoothly guide a raw material to a next rolling mill by twisting a raw material when rolling a circular steel.

In general, circular steel is a section steel having a circular cross section, such as rebar, widely used in civil engineering, construction, and mechanical fields, and is manufactured through a hot rolling process that passes a plurality of rolling machines after heating a rolled material.

The rolling process line for the production of circular steel is composed of a plurality of two-stage parallel rolling mill for pressing the rolled material with the upper and lower rolling rolls, and a two-stage vertical rolling mill for pressing the rolled material with the left and right rolling rolls alternately, By passing through the two-stage parallel rolling mill and the two-stage vertical rolling mill to have a circular shape gradually in an ellipse shape, rough rolling, intermediate rolling, and finishing rolling are completed in circular steel.

By the way, the two-stage vertical rolling mill is to roll the rolled material in the horizontal direction, there is a problem that the rolling efficiency is low and difficult to manage compared to the two-stage parallel rolling mill including the load of the rolling roll in the up and down directions.

Therefore, after forming a rolling process line for the production of circular steel with a plurality of two-stage parallel rolling mills, a twist guide device for rolling mills is used to twist the rolled material to 90 ° between each two-stage parallel rolling mill to guide the next rolling mill.

The twist guide device for the rolling mill is formed in a shape such that the housing member 1 including both side parts, which are spaced apart so as to pass the rolled material 1 therebetween, and the diameter gradually decreases toward the end side, as shown in FIG. A pair of guide rolls 3 are rotatably coupled to the inner side surfaces of the side parts to twist the rolled material 1 passing through the rolling mill to be inserted into the next rolling mill.

In other words, the rolled material 1 is twisted at an angle of 90 ° while passing through the guide rolls 3 of the twist guide device for the rolling mill after passing through the two-stage parallel rolling mill, and then inserted into the next two-stage parallel rolling mill.

However, the twist guide device for the conventional rolling mill is a deflection occurs when the end of the rolled material 1 is driven between the guide rolls 3 due to the gap between the rolls of the rolling mill and the guide rolls 3, and thus the guide roll 3 In this case, the end shape of the rolled material becomes poor or the guide roll 3 is damaged frequently.

And as described above, if the end of the rolled material 1 is bad, there is a problem that the defect rate of the rolled product is increased because it is not smoothly inserted into the next rolling mill, if the failure of the rolled material (1) is severely inserted into the next rolling mill There is a problem that a large accident occurs that the rolling line is stopped.

In particular, the rolled material 1 may have a case in which the angle is deviated after passing through the rolling mill according to the rolling conditions that are rolled by the rolling mill. Since it is to maintain the rolled material (1) to pass through the state is distorted.

Therefore, as described above, when the rolled material 1 is discharged out of an angle, the guide roll 3 of the twist guide device installed on the exit side of the rolling mill should be readjusted according to the discharge angle of the rolled material. Since the installation is fixed to the outlet side of the rolling mill is not easy to adjust the angle of course, in order to adjust the angle had to work after stopping the rolling process, there was a problem to lower the productivity.

In addition, the conventional twisting apparatus for rolling mills is installed in close proximity to the guide roll (3) so that the rolled material passed through the rolling mill is smoothly inserted, when the rolled material (1) is installed in such a close manner and suddenly discharged to the exit of the rolling mill Twist occurred and there was a problem that the end of the rolled material (1) is damaged.

In addition, the rolled material 1 damaged by such a sharp twist continuously impacts the upper and lower portions of the guide roll 3 and degrades the surface quality, and in many cases, the rolled material 1 is frequently separated from the outside of the guide roll 3. It happened.

An object of the present invention is to twist the rolled material smoothly through the rolling mill to be inserted into the next rolling mill to prevent the damage of the rolling material between the rolling mill, improve the quality of the final rolled product, as well as increase the durability of the twist guide for the rolling mill An apparatus and a circular steel rolling apparatus having the same are provided.

This object of the present invention and the first housing member is installed on the outlet side of the rolling mill;

A second housing member rotatably mounted to the first housing member and having a passage through which a rolled material passes;

A guide roll member rotatably mounted to the second housing member to twist the rolled material passing through the passage into the next rolling mill;

A housing rotation control member for controlling rotation of the second housing member;

It is solved by providing a twist guide device for a rolling mill including a material guide member through which a material guide passage is mounted to the first housing member and guides the rolled material discharged to the exit of the rolling mill to the guide roll member.

In addition, the object of the present invention is a first rolling mill having an upper and lower rolling roll for rolling the rolled material into an ellipse shape in which the major axis is positioned horizontally or vertically;

A second rolling mill having a top and bottom rolling rolls spaced apart from the first rolling mill and rolling the rolled material rolled in an elliptic shape in a first rolling mill with a long axis rotated by 90 °;

A first housing member installed between the first rolling mill and the second rolling mill at an outlet side of the first rolling mill and having a through hole drilled from the front to the rear;

A rotating shaft portion rotatably coupled to the rear surface of the first housing member and having a coupling hole communicating with a through hole of the first housing member is provided with a front portion protruding from the front side and a side portion protruding from both sides of the front portion to the rear side. A second housing member including;

It is provided in pairs spaced apart from each other up and down between the two side portions, the taper roll portion for guiding the twist of the rolled material having a shape that gradually decreases in diameter toward the end side, and the rolled material which is twisted and twisted at the end of the tapered roll portion A guide roll member including a cylindrical guide roll portion supporting both side ends of the guide roll member;

A worm gear part provided at the front part of the second housing member and a worm gear part engaged with the worm wheel gear part by being coupled to a gear shaft rotatably coupled to the first housing member; A housing rotation control member including a gear casing in which an angle scale is displayed on one surface and a indicator plate mounted on the worm wheel gear to indicate the angle scale;

The material guide passage is mounted to the first housing member and guides the rolled material discharged to the exit of the rolling mill to the guide roll member, and is rotatably installed in the through hole of the first housing member to be connected to the second housing member. It is solved by providing a circular steel rolling device having a twist guide device for a rolling mill including a fixed material guide member.

The present invention naturally twists the rolled material discharged from the rolling mill and smoothly inserts it into the next rolling mill to prevent damage of the rolled material during the rolling process, thereby improving the quality of the final rolled product as well as accidents caused by the departure of the rolled material during the rolling process. The effect is to prevent.

In addition, the present invention by twisting the rolled material smoothly through it has the effect that the damage caused by the collision with the rolled material does not occur.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

2 is a perspective view showing a basic structure of a twist guide device for a rolling mill of the present invention, in which a first housing member through which a material guide member penetrates and a second housing member on which a guide roll member is mounted are rotatably connected. .

3 is a view showing the operating state of the twist guide device for a rolling mill of the present invention, the worm wheel gear unit is formed integrally with the second housing member the rotation control means for controlling the rotation of the second housing member, the first housing An example of rotating the worm gear part including a worm gear part engaged with the gear shaft rotatably coupled to the member and engaged with the worm wheel gear part is shown.

4 is a cross-sectional view showing the configuration of a twist guide device for a rolling mill of the present invention, showing an example in which the material guide member is rotatably penetrated to the first housing member and the penetrated end is fixed to the second housing member. have.

5 is a diagram illustrating another use state of the present invention, in which water is sprayed from the injection pipe member provided in the twist guide apparatus for a rolling mill of the present invention to prevent scattering of metal particles during rolling.

6 is a view showing a circular steel rolling device having a twist guide device for a rolling mill of the present invention, wherein the rolled material passing through the first rolling mill is twisted vertically through the twist guide device for a rolling mill of the present invention, and then the second rolling mill. It is shown that it is fitted in.

Hereinafter, as shown in FIG. 2, the first housing member 10 of the present invention has a through hole for coupling the material guide member 50 to be penetrated from the front to the rear, and has a wedge portion at the front and the rear of the lower portion. (11) is provided to be seated on the clamp means 300 provided on the outlet side of the rolling stand, the clamp means 300 and the description of the installation will be described in detail below.

On the rear surface of the first housing member 10, a second housing member 20 having a passage through which the rolled material 1 passes is rotatably mounted to the first housing member 10.

The second housing member 20 is rotatably coupled to the first housing member 10 and the front shaft portion 21 in which a rotating shaft portion having a coupling hole communicating with a through hole of the first housing member 10 protrudes in front. )Wow;

It is provided to protrude from both sides of the front portion 21 to the rear side and includes a side portion 22 is mounted to each of the guide roll member 30 to be described later.

That is, the second housing member 20 has a coupling hole formed in the rotating shaft portion of the front portion 21 and a passage through which the rolled material 1 passes through a space between the side portions 22.

And both side portions 22 are rotatably mounted with a guide roll member 30 for twisting the rolled material 1 passing through the passage of the second housing member 20 into the next rolling mill.

The guide roll member 30 is rotatably coupled to each other by a rotatable roll rotating shaft fixed to both side portions 22 through the center thereof, and rotatably mounted to each side. Since it is fixed to 22), it is firmly supported and has rigidity enough to withstand the load generated when the rolled material 1 is twisted.

In addition, the guide roll member 30 is provided in a pair spaced apart from each other, the upper side and the lower side between the two side portions 22, tapered to guide the twist of the rolled material (1) to have a shape that gradually decreases toward the end side The roll part 31 and the cylindrical guide roll part 32 which support the both side ends of the rolling material 1 which are protruded and twisted at the edge part of the said taper roll part 31 are included.

That is, the rolled material 1 is guided to be twisted through the tapered circumferential surface of the tapered roll part 31 while passing between the guide roll members 30, and both end portions of the twisted rolled material 1 are It is supported by the guide roll portion 32 is to be smoothly twisted in a stable state.

On the other hand, when the second housing member 20 is rotated through the housing rotation control member 40, stopped to the rotated position and passed through the rolling mill, the angle of the rolled material is twisted of the guide roll member 30 The angle can be adjusted to correspond to the discharge angle of the rolled material (1).

The housing rotation control member 40 includes a worm wheel gear portion 41 provided on the front portion 21 of the second housing member 20;

And a worm gear portion 42 engaged with the worm wheel gear portion 41 by engaging the gear shaft 42a rotatably coupled to the first housing member 10.

That is, as shown in Figure 3, the guide roll member 30 is coupled to the tool 43 to the gear shaft 42a by the operator directly rotates the worm gear portion 42 is to adjust the angle.

Therefore, the guide shaft member is rotated by rotating the gear shaft 42a when the rolling material 1 is discharged from the rolling mill in a state where the angle of the rolling material 1 is distorted due to a change in rolling conditions such as a difference between the wear of the upper and lower rolling rolls of the rolling mill and a difference in cooling conditions. By adjusting the angle of 30, the rolled material 1 discharged from the rolling mill can be smoothly twisted.

In addition, the housing rotation control member 40 is installed on the exit side of the rolling mill and the bending sensor (not shown) for detecting the state of the rolled material (1) discharged from the rolling mill;

A motor unit 44 connected to the gear shaft 42a to rotate the gear shaft 42a;

The controller 45 further includes a control unit 45 connected to the bending sensor unit and the motor unit 44 to control the operation of the motor unit 44 through a signal transmitted from the bending sensor unit.

The shaft of the motor unit 44 is known to transmit rotational force to the gear shaft 42a through the gearbox and transmits a rotational force to the gear shaft 42a.

The warp sensor part includes an optical sensor and a camera that can detect the degree of warpage of the rolled material (1), it turns out that any known can be used.

That is, the housing rotation control member 40 detects the state of the rolled material 1 discharged from the rolling mill in the bending sensor unit, and when the rolled material 1 is discharged in a twisted state, the motor unit 44 in the control unit 45. ) To automatically adjust the angle of the guide roll member 30 to correspond to the angle at which the rolled material 1 is twisted.

In addition, the housing rotation control member 40 preferably further includes a display portion 46 to check the adjusted angle of the guide roll member 30, the display portion 46 is a built-in worm gear portion A gear casing 46a whose angle scale is marked on the surface;

It is attached to the worm wheel gear portion 41 includes a indicating plate 46b for indicating the angle scale.

That is, the indicator plate 46b is rotated together with the worm wheel gear part 41 when the second housing member 20 is rotated to adjust the angle of the guide roll member 30. The angle scale is to allow the operator to check the adjusted angle of the guide roll member 30.

On the other hand, in the first housing member 10, one end is located on the exit side of the rolling mill, the other end is located on the inlet side of the guide roll member 30, the material guide through which the rolled material 1 passes in the longitudinal direction The material guide member 50 through which the passage 50a penetrates is mounted.

The material guide member 50 passes the rolled material 1 through the material guide passage 50a to guide the rolled material 1 from the exit of the rolling mill to the inlet of the guide roll member 30 so that the rolled material 1 is the guide roll member 30. To be smoothly inserted and twisted between the, the rolling material (1) passed through the rolling mill is rapidly twisted by allowing the upper and lower rolling rolls of the rolling mill and the guide roll member 30 to be set at intervals of a predetermined distance or more. It is a configuration to prevent problems that occur.

In addition, the material guide member 50 forms a first contact preventing groove 51 to prevent the outer circumferential surface of the upper and lower rolling rolls from contacting the upper and lower ends of the rolling mill, and the upper and lower ends of the rolling guide. The second contact preventing groove 52 is formed so that the outer circumferential surface of the roll member 30 does not come into contact with each other so that both ends thereof are as close as possible to the exit side of the rolling mill and the inlet side of the guide roll member 30.

In addition, the material guide member 50 is rotatably coupled to the first housing member 10 and connected to the second housing member 20 to be fixed to the housing rotation control member together with the second housing member 20. It is preferable to allow rotation control to 40.

This allows the rolled material 1 discharged from the rolling mill to smoothly enter the material guide passage 50a of the material guide member 50 so that the end of the twisted rolled material 1 is caught at the entrance of the material guide member 50. The entry will not be smooth and the damage will be prevented.

On the other hand, the rear side of the second housing member 20 is equipped with a spray pipe member 60 having a plurality of nozzles for spraying water to the rolled material (1) passed through the guide roll member (30).

The injection pipe member 60 is connected to the cooling water line of the rolling mill to inject water into the rolling material 1 by receiving the cooling water, and the metal particles are scattered from the rolling material 1 while passing through the guide roll member 30. To prevent it.

The injection pipe member 60 is mounted on the upper and lower portions at the rear side of the second housing member 20 so as to spray water on the upper and lower portions of the rolled material 1, respectively, as shown in FIG. It is desirable to prevent the generated fine metal particles from scattering.

That is, it is possible to improve the working environment in the factory by preventing the metal particles generated in the rolling process in the steel mill producing the rolled products to be scattered.

On the other hand, the circular steel rolling device having a twist guide device for a rolling mill described above has a top and bottom rolling rolls for rolling the rolled material 1 into an ellipse shape in which the long axis is positioned horizontally or vertically. One first rolling mill 100;

The upper and lower rolling rolls are installed to be spaced apart from the first rolling mill 100 and rolled in a shape in which the long axis of the rolled material 1 rolled in an elliptic shape in the first rolling mill 100 is rotated by 90 °. 2 rolling mill 200;

A first housing member (10) installed between the first rolling mill (100) and the second rolling mill (200) at an outlet side of the first rolling mill (100) and having a through hole drilled from the front side to the rear side;

The front shaft portion 21 and the front portion portion 21 is rotatably coupled to the rear surface of the first housing member 10 and the rotating shaft portion protruding from the through hole of the first housing member 10 protrudes from the front surface. A second housing member 20 including side portions 22 protruding from both sides of the back side to the rear side thereof;

A pair of taper rolls 31 and a taper roll unit are provided between the two side parts 22 so as to be spaced apart from each other in a pair, and have a shape that gradually decreases in diameter toward the end side, thereby guiding the twist of the rolled material 1. A guide roll member 30 including a cylindrical guide roll portion 32 supporting both side ends of the rolled material 1 which is protruded and twisted at an end of the 31;

The worm wheel is coupled to a worm wheel gear part 41 provided on the front portion 21 of the second housing member 20 and a gear shaft 42a rotatably coupled to the first housing member 10. The worm gear part 42 engaged with the gear part 41, the worm gear part 42, and the gear casing 46a and the worm wheel gear part 41, each of which has an angular scale marked on one surface thereof, are mounted on the worm gear part 42. A housing rotation control member 40 including an indication plate 46b indicating the angle scale;

The material guide passage 50a which is mounted to the first housing member 10 and guides the rolled material 1 discharged to the exit of the rolling mill to the guide roll member 30 passes through the first housing member 10. It is rotatably installed in the through hole includes a material guide member 50 connected to the second housing member 20 and fixed.

In addition, the circular steel rolling device having a twist guide device for the rolling mill is mounted on the rear side of the second housing member 20 and sprays water on the rolled material 1 passed through the guide roll member 30. Further comprising a spray pipe member 60 having a plurality of nozzles.

The first housing member 10 is mounted on the clamp means 300 provided in the rolling stand of the first rolling mill 100. The clamp means 300 is provided at the lower front of the first housing member 10. A clamp body portion 310 in which the first catching portion 311 into which the wedge portion 11 is inserted is protruded;

The clamping part 320 which is bolted at the rear of the clamp body part 310 and has a second locking part 321 inserted at the end thereof, into which the wedge part 11 is inserted into the rear surface of the first housing member 10. It will include.

That is, the present invention is a twist device for a rolling mill is mounted by mounting the first housing member 10 in the upper portion of the clamp body 310, and then clamped by clamping the clamping part 320 in the rear of the clamp body.

The rolling process line for producing a round steel product is composed of a plurality of two-stage parallel rolling mills including the first rolling mill 100 and the second rolling mill 200 to repeatedly roll the rolled material 1 in an elliptical shape. In manufacturing, circular steel is rolled by repeatedly twisting the major axis direction to 90 ° alternately.

Accordingly, the rolled material 1, which is rolled in an elliptical shape with the long axis horizontal or vertical in the first rolling mill 100, is twisted at 90 ° while being in contact with the tapered roll portion 31 of the guide roll member 30. ) Is smoothly inserted.

When the rolling material 1 is discharged from the rolling mill in a state in which the rolling material 1 is twisted due to a change in rolling conditions such as a difference between the upper and lower rolling rolls of the rolling mill and a difference in cooling conditions, and the like, the gear shaft 42a is rotated and guided. By adjusting the angle of the roll member 30, the rolling material 1 discharged from the rolling mill is smoothly twisted.

In addition, water is sprayed onto the rolled material 1 passing through the guide roll member 30 to prevent scattering of metal particles generated during rolling.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention, which is understood to be included in the configuration of the present invention.

1 is a schematic view showing a twist guide device for a conventional rolling mill

Figure 2 is a perspective view showing the basic structure of the twist guide device for the present invention rolling mill

Figure 3 is a view showing the operating state of the twist guide device for the present inventors rolling mill

4 is a cross-sectional view showing a configuration of a twist guide device for a rolling mill of the present invention.

5 is another use state diagram of the present invention

6 is a view showing a circular steel rolling device having a twist guide device for a rolling mill of the present invention;

* Description of the major symbols in the drawings *

1 rolled material 10 first housing member

20: second housing member 30: guide roll member

31: taper roll part 32: guide roll part

40: rotation control member 50: material guide member

60: injection pipe member 100: first rolling mill

200: second rolling mill

Claims (11)

A first housing member 10 installed at the exit side of the rolling mill; A second housing member 20 rotatably mounted to the first housing member 10 and having a passage through which the rolled material 1 passes; A guide roll member (30) rotatably mounted to the second housing member (20) to twist the rolled material (1) passing through the passage to be introduced into the next rolling mill; A housing rotation control member 40 for controlling rotation of the second housing member 20; It includes a material guide member 50 which is mounted on the first housing member 10 and the material guide passage 50a through which the rolled material 1 discharged to the exit of the rolling mill is guided to the guide roll member 30. The twist guide apparatus for rolling mills characterized by the above-mentioned. The method according to claim 1, The second housing member 20 is rotatably coupled to the first housing member 10 and the front shaft portion 21 in which a rotating shaft portion having a coupling hole communicating with a through hole of the first housing member 10 protrudes in front. )Wow; It is provided to protrude from both sides of the front portion 21 to the rear side and includes a side portion 22, each of which the guide roll member 30 is mounted, The guide roll member 30 is a twist guide device for a rolling mill, characterized in that provided in a pair spaced apart from each other, the upper and lower sides between the two side portions (22). The method according to claim 1 or 2, The guide roll member 30 has a shape in which the diameter gradually decreases toward the end side, so that the tapered roll portion 31 for guiding the twist of the rolled material 1 and the end roll of the tapered roll portion 31 are twisted and rolled. The twist guide apparatus for rolling mills characterized by including the cylindrical guide roll part 32 which supports the both side ends of the raw material 1. The method according to claim 1, The housing rotation control member 40 includes a worm wheel gear portion 41 provided on the front portion 21 of the second housing member 20; Twist guide device for a rolling mill, characterized in that it comprises a worm gear portion 42 engaged with the worm wheel gear portion 41 by engaging the gear shaft 42a rotatably coupled to the first housing member 10. . The method according to claim 4, The housing rotation control member 40 is installed on the exit side of the rolling mill and the bending detection sensor for detecting the state of the rolled material (1) discharged from the rolling mill; A motor unit 44 connected to the gear shaft 42a to rotate the gear shaft 42a; And a control unit 45 which is connected to the bending sensor unit and the motor unit 44 and controls the operation of the motor unit 44 through a signal transmitted from the bending sensor unit. Guide device. The method according to claim 1 or 4, The housing rotation control member 40 is a twist guide device for a rolling mill, characterized in that it further comprises a display unit 46 for checking the adjusted angle of the guide roll member (30). The method according to claim 1, The material guide member 50 forms a first contact preventing groove 51 to prevent the outer circumferential surface of the upper and lower rolling rolls of the rolling mill from contacting the upper and lower ends of the rolling mill, and the upper and lower guide rolls. The twist guide apparatus for rolling mills characterized by forming the 2nd contact prevention groove | channel 52 which prevents the outer peripheral surface of the member 30 from contacting. The method according to claim 1 or 7, The material guide member (50) is rotatably coupled to the first housing member (10) and twist guide device for a rolling mill, characterized in that the connection is fixed to the second housing member (20). The method according to claim 1, Further comprising a spray pipe member 60 mounted on the rear side of the second housing member 20 and having a plurality of nozzles for spraying water onto the rolled material 1 passing through the guide roll member 30. Twisting guide device for rolling mill, characterized in that. A first rolling mill (100) having upper and lower rolling rolls for rolling the rolled material (1) in an ellipse shape in which the major axis is positioned horizontally or vertically; A second rolling mill 200 having upper and lower rolling rolls installed to be spaced apart from the first rolling mill 100 to roll the rolled material 1 rolled in an elliptic shape in the first rolling mill 100 in an opposite direction; ; A first housing member (10) installed between the first and second rolling mills (100) and the second rolling mill (200) at an outlet side of the first rolling mill (100) and having a through hole drilled from the front to the rear; The front shaft portion 21 and the front portion portion 21 is rotatably coupled to the rear surface of the first housing member 10 and the rotating shaft portion protruding from the through hole of the first housing member 10 protrudes from the front surface. A second housing member 20 including side portions 22 protruding from both sides of the back side toward the rear side; A pair of taper rolls 31 and a taper roll unit are provided between the two side parts 22 so as to be spaced apart from each other in a pair, and have a shape that gradually decreases in diameter toward the end side, thereby guiding the twist of the rolled material 1. A guide roll member 30 including a cylindrical guide roll portion 32 supporting both side ends of the rolled material 1 which is protruded and twisted at an end of the 31; The worm wheel is coupled to a worm wheel gear part 41 provided on the front portion 21 of the second housing member 20 and a gear shaft 42a rotatably coupled to the first housing member 10. The worm gear part 42 engaged with the gear part 41 and the worm gear part 42 are mounted on the gear casing 46a and the worm wheel gear part 41, each of which has an angular scale indicated on one surface thereof. A housing rotation control member 40 including an indication plate 46b indicating the angle scale; The material guide passage 50a which is mounted to the first housing member 10 and guides the rolled material 1 discharged to the exit of the rolling mill to the guide roll member 30 passes through the first housing member 10. Circular steel rolling device having a twist guide device for a rolling mill, characterized in that it comprises a material guide member (50) rotatably installed in the through-hole and connected to the second housing member (20). The method according to claim 10, Further comprising a spray pipe member 60 mounted on the rear side of the second housing member 20 and having a plurality of nozzles for spraying water onto the rolled material 1 passing through the guide roll member 30. Circular steel rolling apparatus provided with the twist guide apparatus for rolling mills characterized by the above-mentioned.

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