JPH06226323A - Method for lubricating and rolling shape steel and lubricator - Google Patents

Abstract

PURPOSE:To perform stable rolling without deteriorating the dimension of a product by specializing contact areas with flanges of a material to be rolled in the side surfaces of horizontal rolls and lubricating the parts concentrically. CONSTITUTION:In the universal rolling to a wide flange shape steel, partial areas of 1/2-1/5 on the tip sides of the flanges in contact areas with the material to be rolled in the side surfaces of horizontal rolls 4, 5 of a universal mill are lubricated concentrically by high viscosity lubricant through transfer rollers 7 and the remaining areas are rolled without lubricating. In other words, each lubricator 6 is provided with a lubricant supplying part to supply high viscosity or grease compounded agent at a suitable pressure and a lubricant storing part 16, the area of width 1 on the each side surface 20 of a horizontal roll is coated by a transfer roller peripherally with lubricant and this width 1 is given by about 1/2-1/5 of the contact width with the flange. As a result, an amount of wear can be reduced and the life of the roll can be prolonged as a stable rolling state is kept and a product holds a high dimensional accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for lubricating and rolling a section steel having a flange such as an H-section steel, an I-section steel or a channel steel by a universal rolling mill.

[0002]

2. Description of the Related Art Generally, in a section steel having a flange such as an H-section steel or an I-section steel, as shown in FIG. 8, the axial centers of the left and right vertical rolls 2 and 3 and the upper and lower horizontal rolls 4 and 5 are on the same vertical plane. It is rolled and shaped using a universal rolling mill. One of the problems in that case is, as shown in FIG. 9, an area of about 1/2 from the flange tip end side (hereinafter, simply referred to as “flange tip contact area”) among the horizontal roll side surfaces 41 and 51 as rolling is performed.
The amount of wear of 411 and 511 is about 10 times as large as that of the remaining area, and it is a rule condition for roll unit and flange thickness accuracy.

Next, the reason why the wear pattern on the side surface of the horizontal roll becomes as shown in FIG. 9 will be described with reference to FIG. 10 which is an explanatory view of H-section steel rolling by a universal rolling mill. Figure 10 (a)
In the plan view and the side view (b), 1A is a sectional shape of the material to be rolled before rolling, and 1B is a sectional shape of the material to be rolled after rolling. The flange 1D of the rolled material 1A traveling in the direction of the arrow X is formed by the side surface of the horizontal roll 4 (5) and the vertical rolls 2, 3
Therefore, the shaded area SF1-EF1 in FIG.
-EF2-SF2 contact area (hereinafter, simply "contact area"
Referred to as), and the flange thickness is changed from tF1 to tF2. During this time, the web 1C of the material 1A to be rolled is rolled between SW and EW by the horizontal rolls 4 and 5, and the web thickness becomes tW1 to tW2. in this case,
For web rolling, it is similar to normal plate rolling, and the speed of the web surface of the material to be rolled and the horizontal speed of the horizontal roll are almost equal.
The relative slip between the roll surface and the web surface of the material to be rolled is small. Therefore, as shown in FIG. 9, in the contact regions 42 and 52 with the web surface of the horizontal roll, the amount of roll wear is relatively small. However, the situation of flange rolling is completely different from that of ordinary plate rolling.

FIG. 11 (a) shows an example of universal rolling of H-section steel of H400 × 400 size, assuming that the inner surface of the rolled material flange inner surface and the side surface of the horizontal roll are slipping in the entire contact area. The distribution of the relative speed (hereinafter, simply referred to as “relative speed”) of the material to be rolled with respect to the side surface of the horizontal roll at each point is shown by the size and direction of the arrow. As can be seen from FIG. 11A, the relative velocity in the contact area is different in size and direction at each point, and is extremely large especially between the positions SF2 to EF2 where the flange tip contacts and in the vicinity of the entrance corner SF1. It has become.

A curve AB shown by a broken line in FIG. 11A is a curve obtained by connecting points at which the horizontal direction (X direction in FIG. 10) component of the relative speed is 0, and is called a neutral line. . Incidentally, it is only at point B on the neutral line that both the vertical and horizontal components of the relative velocity become 0 (that is, the horizontal roll side velocity and the rolled material velocity match). In the contact area, the side surface of the horizontal roll and the inner surface of the rolled material flange rub against each other at such a relative speed. It is obtained by integrating along the locus, and the sliding distance when the point on the side surface of the roll passes through the contact area once is as shown by the broken line in FIG. 11 (b). That is, it can be seen that the sliding distance of the portion in contact with the vicinity of the rolled material flange tip is the largest. Actually, the influence of the contact pressure distribution, the temperature distribution, etc. is added to the influence of the sliding distance, and the horizontal roll side surface wear pattern shown in FIG. 9 appears.

Further, the existence of a fixed region is a factor that governs the wear pattern in actual rolling. That is, if the coefficient of friction between the rolled material flange surface and the side surface of the horizontal roll is high to some extent, in the region shown by the diagonal lines near the neutral line in FIG. 11A, from the relationship between the contact pressure distribution and the rolled material temperature distribution. Since the shear yield stress of the rolled material flange is lower than the friction stress received from the roll surface and the relative sliding speed is low, the rolled material deforms in synchronization with the roll, so it is actually not slipping and is in a fixed state. . Therefore, it is assumed that the rolling state of the material to be rolled is stable as a whole, and the sliding distance received by the roll surface passing through the fixed area is in a sliding state over the entire contact area indicated by the broken line as shown by the solid line in FIG. 11 (b). Since it is smaller than the sliding distance (hereinafter simply referred to as “apparent sliding distance”), the amount of roll wear from the center of the flange piece width to the vicinity of the corner is smaller than the amount of wear based on the apparent slip distance. Local wear appears near the tip of the flange shown in FIG. Further tip,
In the area of about 1/5, the flange tip of the inlet side material is bulging in the preceding edging rolling and locally thickened, so that local wear becomes particularly steep as the thickness reduction of that portion increases. .

In order to deal with the above-mentioned local wear of the roll, the applicant of the present application has provided, for example, Japanese Patent Publication No. 53-39174 with a means for press-coating solid graphite with a constant pressure on the roll surface. However, since it is difficult to maintain the pressing force evenly, it is difficult to obtain a uniform lubricating effect. Therefore, a fluid lubricant supply method is well known as an alternative means, and FIG. 12 shows a general configuration example thereof. In the figure, nozzles are arranged at symmetrical positions in the vertical and horizontal directions, and a lubricant is supplied around the rolled material flange tip contact areas 411, 511 or the corner R portions 412, 512 of the horizontal roll side surfaces 41, 51 to contact the contact areas. 2 shows a structure in which the friction coefficient between the inner surface of the rolled material flange and the side surface of the horizontal roll in FIG.

However, it is extremely difficult to supply the lubricant while keeping the friction coefficients of the contact regions at the four side surfaces of the upper and lower horizontal rolls equal in order to achieve a symmetrical lubrication state. The reason is as follows. That is, a wear reduction target portion, for example, a rolled material flange tip contact region 411 shown in FIG.
When the lubricant is sprayed on 511, the corner R part 4 is used for the lubricant sprayed on 411 of the upper roll due to gravity.
The drips in the direction of 12 and the lubricant sprayed on the lower roll 511 drips in the direction of the roll axis center C5. For this reason, even if the lubricant is sprayed at the symmetrical positions 411 and 511 in the vertical direction, the lubricant sprayed on 411 of the upper roll 4 is sprayed on the entire side surface 41 of the upper roll 4 to 511 of the lower roll 5. Since the lubricant flows vertically downward,
With respect to the lower roll, only the injection portion 511 works effectively, and the upper roll has a relatively better lubrication state. Further, since the lubricant sprayed on the upper roll drips on the lower roll, it becomes impossible to predict the lubrication state of the lower roll, and it becomes difficult to control it.

Further, roll cooling water is constantly sprayed on the rolls to prevent heat cracks due to sensible heat, working heat, etc. of the material to be rolled, and due to the outflow of the lubricant, the lubricating state becomes even more complicated. And it becomes asymmetric. As a result, the frictional force between the roll surface and the material to be rolled is reduced, and
Rolling becomes unstable because the entire sticking region of (a) disappears and the entire rolling contact region becomes a sliding region, or the lubrication state becomes asymmetric at the four side surfaces of the upper and lower horizontal rolls. In other words, this results in defective biting of the material to be rolled, defective slippage and poor output, and dimensional deterioration resulting from this.

Therefore, although lubrication rolling is attempted to improve the durability of shaped steel rolls, improve the surface texture of the material to be rolled, and prevent seizure, the lubrication is stopped during rolling due to unstable rolling. However, there were many situations in which it was difficult to make a full-scale adoption. In particular, the high-viscosity composite lubricant has a large application effect such as reduction of wear amount and prevention of seizure, but the friction coefficient is generally small, and passing-through failure is likely to occur in the whole surface lubrication. In addition, the nozzle injection method, which has been widely used as a method for supplying lubricating oil, not only makes it difficult to perform localized centralized lubrication due to diffusion of the injection lubrication surface, but also causes nozzle clogging and rolling problems due to asymmetrical lubrication. However, it was difficult to apply it to shape rolling.

[0011]

SUMMARY OF THE INVENTION According to the present invention, when performing lubrication rolling of a section steel having a flange such as an H-section steel or an I-section steel by a universal rolling mill, the fixing area between the side surface of the universal horizontal roll and the inner surface of the flange of the material to be rolled is determined. The present invention provides a method and a lubrication apparatus for the same, which makes the lubrication state symmetrical and realizes stable rolling without deteriorating the product size.

[0012]

The gist of the present invention is as follows. (1) When universally rolling a shaped steel having a flange, a circumference within a range of at least about ⅕ or within about ½ from the flange tip side of the contact area with the rolled material flange in the side surface of the horizontal roll of the universal rolling mill. Lubricating rolling method for shaped steel, characterized in that the surface is partially lubricated with a high-viscosity lubricant and the remaining area is rolled without lubrication. (2) A lubrication device for a horizontal roll of a shaped steel universal rolling machine having a flange, which includes a rotatable transfer roller provided on a side surface of the horizontal roll so as to be movable back and forth through a pressing mechanism, and the transfer roller. A lubrication device comprising a lubricant supply mechanism for supplying a lubricant.

(3) A lubrication device for a horizontal roll of a shaped steel universal rolling mill having a flange, which is a rotatable endless track belt provided on the side surface of the horizontal roll so as to be movable back and forth through a pressing mechanism. A lubrication device for rolling a shaped steel, comprising a lubricant supply mechanism for supplying a high-viscosity lubricant to the endless track belt.

(4) A universal rolling mill of a shaped steel rolling mill having a flange, which is a lubrication device for a horizontal roll, wherein a lubricant storage tank is provided on the side surface of the horizontal roll so as to be movable back and forth through a pressing mechanism, and the lubrication. Shaped steel rolling comprising a sliding piece that slides on the side surface of the horizontal roll on the open bottom surface of the agent storage tank, and a lubricant supply unit that supplies a high-viscosity lubricant to the lubricant storage tank. Lubricator.

[0015]

The present invention ensures the stability of rolling by locally applying a high-viscosity lubricant having a high lubrication rolling effect only to a portion with severe wear while keeping the non-lubricated region in a fixed state. At the same time, the local wear of the lubrication area is reduced and the wear amount of the entire contact area is made uniform.

The operation and embodiments of the present invention will be described in more detail with reference to the drawings. The horizontal roll side-face wear pattern shown in FIG. 9 can be explained by the relative slip distance of the roll surface, which is shown by the solid line in FIG. Approximately 1 on the flange tip side in the larger flange tip contact area
Obviously, it is sufficient to lubricate / 2 to ⅕.

The reason why the lubrication area is limited to "a peripheral surface within a range of at least about ⅕ or within about ½ from the flange tip side" is as follows. As is clear from the horizontal roll side wear pattern shown in FIG.
The amount of wear rapidly increased from the vicinity of the widthwise center of one flange to the tip of the flange. Especially about 1
In the vicinity of / 5, not only the relative sliding distance is large, but also the entry side material is locally thickened and the temperature is low, resulting in intensive and intense wear. Generally, the region where this wear is severe is about 1/2 to 1/5 of the flange tip side. If the lubricated surface is expanded by more than about 1/2, rolling troubles such as defective threading and defective shape and dimension often occur.
If the lubricating surface is squeezed to about 1/5 or less, the result of wear reduction cannot be obtained. Therefore, considering comprehensively the lubrication rolling application results including the rolling stability, rolling characteristics peculiar to the rolling size, and lubricant cost, at least about 1/5 of the flange tip side, and within the range of up to about 1/2 Partial lubrication rolling is effective.

Next, an example of an apparatus for carrying out the method of the present invention will be described with reference to the drawings. 1 (a) and 1 (b) are a front view and a side view, respectively, showing a usage state in the present invention,
Maximum wear parts 411, 511 of the horizontal roll in FIG.
Shows a state in which lubrication is being performed in order to reduce the amount of wear. In the figure, the H-shaped steel 1 is rolled by the upper and lower horizontal rolls 4 and 5 and the left and right vertical rolls 2 and 3, and each roll rotates in the direction of the arrow.

Reference numeral 6 denotes a lubricating device, which has a lubricant supply portion 15 and a lubricant storage portion 16 for supplying a high-viscosity, for example, a grease-based composite lubricant under a proper pressure, and a transfer roller 7 for increasing the viscosity. A viscosity lubricant is applied circumferentially on the side surface 20 of the horizontal roll in a width range of 1. l is about 1/2 of the flange contact width
Set to 1/5. The transfer roller 7 is rotatably attached to the lubricant storage tank 8 by a shaft 13 via a bearing. The lubricant storage tank 8 is held by a holder 9 through a stop pin 14 and a long hole 12 so that the position of the roll can be adjusted in the radial direction. The holder 9 is fixed to the rolling mill via a fixed plate 11. The transfer roller 7 has a structure in which it is pressed against the side surface of the horizontal roll with a predetermined pressure by a pressing mechanism 10 such as a spring via a lubricant storage tank 8. In the present invention, the lubricant supply mechanism is a generic term including the lubricant supply unit 15, the lubricant storage unit 16 and the lubricant storage tank 8.

The lubrication device 6 is installed at four positions on the left and right of the upper and lower horizontal rolls as shown in FIG. 1 (a). When the steel material is rolled in the direction X of FIG. 1, first, in order to lubricate the area of the maximum wear portion in the contact area, the transfer roller 7 for supplying the lubricant makes the circumference of the horizontal roll side surface 20 in the range of the width l. The high-viscosity solid composite lubricant is applied in a striped manner. Here, the rotatable transfer roller 7
Are frictionally driven through horizontal rolls 4 and 5, and the rotation thereof causes the high-viscosity lubricant in the lubricant storage tank 8 to transfer.
On the horizontal roll, and then the maximum wear area 411,5 of the horizontal roll
The high-viscosity lubricant is transferred to the roll surface by contact with 11 and pressing. Further, the surface of the transfer roller 7 from which the lubricant has been removed by transfer receives the rotational force from the contact surface with the horizontal roll and enters the lubricant storage section 16 of the lubricant storage tank 8,
The structure is such that the high-viscosity lubricant reattaches. The minimum gap m between the transfer roller 7 and the outlet of the lubricant storage tank 8 is determined by the required lubricant film thickness, and is usually 0.1 mm to 0.
Set to about 5 mm. When m is less than 0.1 mm, solid additives in the high-viscosity composite lubricant tend to cause clogging and oil film breakage. On the other hand, when m is larger than 0.5 mm, oil leakage generally increases and the efficiency of the lubricant decreases.

A conventional low-viscosity liquid lubricant becomes a liquid film due to the influence of gravity, roll cooling water, etc. after being attached to the roll surface and centrifugal force accompanying the roll rotation, and drips on the side surface of the roll.
It will penetrate into areas where lubrication is not needed, which makes the rolling unstable. However, in the present invention, a high-viscosity solid composite lubricant having high adhesiveness and hardly diffusing on the roll surface is used, and further, the transfer roller 7 is physically as close as possible to the rolling contact area between the material to be rolled and the roll. Since they are arranged in such a manner, there is no problem as in the past. Here, when a UV-curable type is applied as the lubricant, it is more effective because it is cured immediately by irradiating it with UV rays immediately after transfer, and strong adhesion, diffusion resistance and abrasion resistance are obtained. It is also effective to drain the transfer surface of the horizontal roll side surface 20 with a high-pressure steam, high-pressure air or a drain plate such as rubber or felt before the transfer, and the cleaning effect of the transfer surface increases as the transfer surface is cleaned in advance. .

Here, the transfer roller 7 in the apparatus of the present invention.
Can adopt various structural forms as shown in FIGS. 2 (a) to 2 (f). (A) is a single roller type as in FIG. 1, and is a basic type of a transfer type lubricant supply device. (B) is a twin-roller type, and the transfer roller 7 is supported by the backup roll 23 and the pressing device 10 causes the maximum wear parts 411, 51
Since it is pressed by 1, the rigidity is higher than that of the basic type and the adhesion of the lubricant to the transfer roller 7 is good. In (c), a plurality of transfer rollers 7 are arranged in series to direct more careful coating. (D) is one in which two transfer rollers 7 are supported by one backup roll 23, and has the advantages of (b) and (d). (E) is one transfer roller 7
Is supported by two backup rolls 23 to enhance the holding rigidity of the transfer roller 7. In (f), the transfer roller 7 is arranged around the backup roll 23 as a planet, and the rigidity and durability of the transfer roller 7 having a small diameter are improved.

Next, the lubrication device of the present invention is not limited to the roller transfer means shown in FIGS.
Even if the belt transfer means or the spatula pressing means shown in (4) is adopted, substantially the same effect can be expected. That is, in the example of FIG. 3, an endless track belt 17 is used instead of the transfer roll 7 in FIG. 1, and a high-viscosity lubricant is circled on the side surface 20 of the horizontal roll in the range of width 1 by the track belt 17. Apply circumferentially. The endless track belt 17 is rotatably attached to the lubricant storage tank 8 via a work roller 18 and a backup roll 19, and also has a pressing device 10 such as a spring.
Is pressed against the side surface of the horizontal roll with a predetermined pressure. The function of the endless track belt 17 is exactly the same as that of the transfer roller in FIG. 1, and the same applies to the range of the minimum gap m between the belt 17 and the outlet of the lubricant storage tank 8.

Further, as the endless track belt 17, FIG.
There are structural types as shown in (a) and (b). (A) is a single work roller type as in FIG. 3, and is a basic type of a lubricant supply device by an endless belt transfer method. (B)
Is a twin work roller type, the endless track belt 17 is held between two work rollers 18, and is pressed by the pressing device 10 against the maximum wear portion 411 or 511 of the horizontal roll,
Since the application contact length by the endless track belt 17 can be made longer than that of the basic type, the application of the lubricant becomes more reliable.

The endless track belt 17 is shown in FIGS.
Shows the state of contact between the maximum wear parts 411 and 511 of the horizontal roll. 5 (a) corresponds to FIG. 4 (a),
The belt 17 is provided with slit grooves perpendicular to the rotation direction at regular intervals, and the belt 17 and the work roller 18 are provided near the outlet where the distance between the lubricant storage layer 8 and the belt 17 is minimum (m). Since they come into contact with each other to form an arc shape and the slit groove is opened, the trapping property of the lubricant is improved. At the time of transfer, the slit groove is pressed by the horizontal rolls 411 and 511, elastically deforms and closes, so that the captured lubricant is reliably discharged to the roll surface. FIG. 5B corresponds to FIG. 4B, and the slit groove of the belt 17 has horizontal rolls 411 and 51.
The contact length with 1 is longer than that in FIG. 5 (a), and
Pushed by the curved surface of the horizontal rolls 411, 511,
Further, since the slit groove is closed, it is possible to reliably transfer the lubricant even with a low pressing force.

In the device using the endless track belt 17, the oil film thickness is basically controlled by the pressing pressure of the pressing device 10. Therefore, it is desirable that reliable transfer is possible even at low pressure. In the above example, the material of the belt 17 is hard rubber, but if flocking processing or felt-based material is used, transfer with a low pressing force is sufficiently possible even with the structure of FIG. 4A.

Further, in the present invention, the coating device having the pressing spatula structure shown in FIG. 6 can be adopted. That is, as shown in the figure, in order to apply the lubricant to the side surface 20 of the horizontal roll in a circumferentially pressing manner, the sliding piece 27 is provided on the outlet side of the lubricant storage section 16. The sliding piece 27 is a so-called spatula-shaped projecting piece for coating, and is configured to be freely taken in and out of the storage tank 8 so that it can be extended by a necessary length depending on the wear of the sliding piece 27. There is. A pressing spatula 22 is provided behind the sliding piece 27 to prevent the lubricant from flowing out, and covers a gap between the lubricant storage tank 8 and the roll surface in the lateral direction. The open bottom surface of the storage tank 8 for high-viscosity lubricant has a horizontal roll side surface 20 corresponding to the contact area 411 or 511 of the rolled material flange in the side surface of the universal mill horizontal roll via the pressing spatula 22 and the sliding piece 27.
Is slidably pressed against. The pressing spatula 22 is
In addition to the sealing function to prevent lubricant outflow, it also has the function of pre-wiping the lubricant application surface. The sliding piece 27 is pressed against the side surface of the horizontal roll with a predetermined pressure by the pressing device 10 such as a spring via the storage tank 8.

FIG. 7 shows an example of the structure of the sliding piece 27. Figure 7
(A) is a single blade type as in FIG. 6, and is a basic type of a lubricant supply device by a coating spatula coating method. Figure 7
(B) is a multi-stage blade type, in which a plurality of sliding pieces 27 are installed, and the pressing device 10 causes the maximum wear parts 411, 5 of the horizontal roll.
Since it is pressed by 11, and is applied by the sliding piece 27 a plurality of times as compared with the basic type, the lubricant is applied more reliably.

In the apparatus of FIG. 6, the oil film thickness is basically controlled by the pressing pressure of the pressing device 10. The sliding piece 27 and the spatula 22 are basically made of hard rubber. However, if a flocking process, felt-based material, or brush type is used, the coated surface is good without film breakage.

By the way, the embodiments shown in FIGS. 1, 3 and 6 are applied to rolls for unidirectional rolling such as finishing rolls and continuous rolling rolls, but are applied to reverse rolling rolls that perform a reciprocating pass. Installs the lubrication device 6 on both sides of the upper and lower horizontal rolls 4 and 5 in the rolling direction. However, when a lubricant that has extremely strong adhesiveness and durability and remains on the roll after rolling as shown in 21 of FIG. 1 is used, sufficient effect can be obtained even if it is installed on only one side. Not as long. Here, an on / off control is performed in which the lubricant is supplied from the lubricant supplying portion 15 on the inlet side only while the material to be rolled is being threaded, and the supply of the lubricant is stopped while the material to be rolled is not threaded and on the exit side. This will reduce the amount of lubricant used.

In reverse rolling, the fixed plate 1
By mounting 1 on the chock of the horizontal roll, the lubrication device 6 can move together with the horizontal roll in conjunction with opening and closing of the roll, so that the transfer roller 7 and the endless belt are provided at a predetermined side of the horizontal roll side 20 for each pass. Alternatively, the sliding piece is held and reliable application becomes possible. Since the lubricating device 6 is positionally adjustable in the radial direction of the roll and in the direction facing the roll circumferential surface, it is possible to transfer to an optimum portion according to the size of the material to be rolled. Although the same lubrication method can be applied to the contact regions 42 and 52 of the horizontal roll with the surface of the material to be rolled, in actual operation, the amount of roll wear in the region becomes more problematic than that of the side face of the horizontal roll. Not needed, so not needed.

[0032]

According to the lubrication rolling method of the present invention, it is possible to reliably and stably perform localized centralized lubrication while maintaining the symmetry of lubrication rolling. It is possible to eliminate instability, maintain high dimensional accuracy of the product, and reduce the amount of wear on the side parts of the universal horizontal roll, which causes the most wear, without causing rolling downtime for mill adjustment. Therefore, the life of the roll can be extended. In addition, the lubrication apparatus according to the present invention can perform the above-mentioned lubrication rolling method in a suitable state, has a rational structure, and is highly practical.

[Brief description of drawings]

FIG. 1 is an explanatory view of an apparatus of the present invention and a lubrication rolling condition.

FIG. 2 is an explanatory diagram of a transfer roller configuration type of the present invention.

FIG. 3 is an explanatory view showing another example of the lubricating means of the present invention.

FIG. 4 is an explanatory view of an example of a type of endless belt belt in FIG.

FIG. 5 is an explanatory diagram of a lubrication transfer state by the endless track belt according to the present invention.

FIG. 6 is an explanatory view showing still another example of the lubricating means of the present invention.

FIG. 7 is an explanatory view showing a structural type of the spatula pressing means in FIG.

FIG. 8 is a view showing a universal rolling condition of H-section steel.

FIG. 9 is an explanatory view of a horizontal roll wear pattern.

FIG. 10 is an explanatory diagram of H-section steel rolling by a universal rolling mill.

FIG. 11 is a diagram showing a relative velocity distribution between a roll and a material to be rolled and a slip distance in a horizontal roll side contact region.

FIG. 12 is a view showing a conventional lubricant supply pattern on the side surface of a horizontal roll.

[Explanation of symbols]

 1A Rolled material before rolling 1B Rolled material after rolling 2,3 Universal vertical rolls 4,5 Universal horizontal rolls 6 Lubrication device 7 Transfer roller 8 Lubricant storage tank 9 Holder 10 Presser 11 Fixing plate 12 Long hole 13 Shaft 14 Stop Pin 15 Lubricant Supply Section 16 Lubricant Storage Section 17 Endless Track Belt 18 Work Roller 22 Pressing Spatula 23 Backup Roll 27 Sliding Piece

Claims (4)

[Claims] 1. When universally rolling a shaped steel having a flange, a range of at least about ⅕ or within about ½ from a flange tip side of a contact area with a rolled material flange in a side surface of a horizontal roll of a universal rolling mill. The lubrication rolling method for shaped steel is characterized in that the peripheral surface of is partially lubricated with a high-viscosity lubricant and the remaining area is rolled without lubrication. 2. A lubrication device for a horizontal roll of a shaped steel universal rolling mill having a flange, comprising a rotatable transfer roller provided on a side surface of the horizontal roll so as to be movable back and forth through a pressing mechanism, and the transfer. A lubricating device, comprising: a lubricant supply mechanism for supplying a lubricant to the roller. 3. A universal roll mill horizontal roll lubricator for a shaped steel having a flange, comprising: a rotatable endless track belt provided on a side surface of the horizontal roll so as to be movable back and forth through a pressing mechanism; A lubrication apparatus for rolling a shaped steel, comprising a lubricant supply mechanism for supplying a high-viscosity lubricant to an endless track belt. 4. A lubrication device for a horizontal roll of a shaped steel universal rolling mill having a flange, wherein a lubricant storage tank is provided for advancing and retreating to a side surface of the horizontal roll via a pressing mechanism, and the lubricant. A rolling piece characterized by comprising a sliding piece that slides on the side surface of the horizontal roll on the open bottom surface of the storage tank, and a lubricant supply unit that supplies a high-viscosity lubricant to the lubricant storage tank. Lubrication device.