JPS6316802A - Rolling method - Google Patents

Abstract

PURPOSE:To easily control the shape of a rolling material without making roll deflection by imparting the contour of odd function curves axially to sleeve rolls which are loosely fitted onto supporting rolls and moving the sleeves relatively in the axial direction. CONSTITUTION:The sleeve rolls 3, 3' which are loosely fitted onto the supporting rolls 2, 2' having an axially equal diameter are formed to have the contours which are point-symmetrical with each other. The profiles of the contours thereof are formed of, for example, the axial odd function curves such as, for example, cubic curves. The shapes of sheet crowns are controlled to a recess 4' or projecting shape 4'' by the contours of the sleeves 3, 3' when said sleeves are relatively axially moved at upper and lower work rolls 1, 1' from the reference state.

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology belongs to the technical field of rolling and forming a steel plate or the like into a thin plate having a predetermined thickness.

*Summary of the Summary> Therefore, the invention of this application is a roll in which a sleeve roll is fitted to the support roll in at least one pair of rolls such as a work roll, an intermediate roll, and a reinforcing roll. When rolling a rolling mill, at least a pair of upper and lower sleeves U-1
- The invention relates to a method of rolling by relatively moving the sleeve roll in the axial direction, and in particular, the contour of the sleeve roll is formed with an odd function curve such as a cubic function in the axial length,
One side is arranged symmetrically with respect to the usage, and
This invention relates to a rolling method in which the sleeve rolls are moved relative to each other in the axial direction, and further, roll bending is applied in addition to the relative movement in the axial direction.

<Prior art> As is well known, with the prosperity of the automobile and electrical industries, the demand for rolled steel sheets that support these industries has increased, and the shape of the steel sheets has increased.
(I) i4 L/ <Accuracy is now required for control1, so the control of the shape of the rolled steel plate in the longitudinal direction must satisfy the required precision1α. Although techniques have been developed in recent years, temporary crowns have not yet been supplied in sufficient quantities, and various techniques have been developed.

Then, for example, the intermediate roll is moved relative to the axial direction,
A model was developed and adopted that attempted to control the shape of the mo by adding roll bending.
), but for example, JP-A-51-103
0538 publication, the invention published in JP-A-53-48051, and the invention published in 1982-48052 (1989-48052). : A technology has been developed that increases the bending effect of the work 11-rule and makes it easier to control the plate shape by making the sleeve one core per 40 root width and adjusting it in the axial direction. Ta.

However, in the sleeve roll type of the prior art, it is difficult to adjust the shaft of the cylindrical sleeve fitted on the support roll to the width of the rolled material. By shifting the sleeve, the purpose is to increase the roll bending effect and eliminate the bending moment caused by the contact load with the reinforcing roll. In that sense, the relative movement of the sleeve in the axial direction merely plays an auxiliary role in roll bending. It was nothing more than

In other words, sheet shape control only provides elastodynamic shape control based on roll deflection, and has the disadvantages that desired shape control cannot be extended to the center of the rolled material and that a powerful roll bending device is required. there were.

That is, with control based only on roll deflection, there is a moving point where the large crown control function is insufficient, and there is a limit to the roll pending force due to limitations in the strength of the work roll and the size of the sleeve support roll. In addition, a powerful bending device is required to apply a perpendicular bending force to the large-diameter roll, and the control and management of these devices is extremely complicated.

<Object of the Invention> According to 1-1 of the invention of this application, sleeve rolls are arranged for at least one pair of rolling rolls such as work rolls, intermediate [1-rolls, reinforcement rolls, etc.] in each month based on the above-mentioned prior art. death,
The sleeve roll fitted in the supporting D-rule has a geometrical shape, i.e. an odd function curve in the axial direction):
A curved shape is given, and the upper and lower pairs of three-nos 1-
Geometrically and elastically controlled by adding roll bending and relative movement in the axial direction of the 1-roll, it is possible to accurately and easily extend the curvature. 1kos・1
This provides an excellent rolling method that is beneficial to the field of application of rolling forming technology, allowing for greater shape control.

In order to solve the above-mentioned problems, the structure of the invention of this application, which is summarized in the above-mentioned '14j i+Q claims, is to solve the above-mentioned problems by providing a work roll of a rolling mill, At least one pair of the intermediate roll and the reinforcing roll is used as a sleeve roll, and
By imparting a curved shape according to an odd function curve such as a cubic function in the axial direction of the sleeve roll fitted to the sleeve roll, and moving the upper and lower sleeve rolls relative to each other in the axial direction, and furthermore, by imparting roll bending. , technical measures have been taken to make it possible to control the plate crown over a wide range.

<Example> Next, an example of the invention of this application will be described below with reference to the drawings.

In the embodiment shown in FIGS. 1 to 5, the illustrated embodiment is a two-high rolling roll embodiment, in which a pair of upper and lower work rolls 1.1' are sleeve roll types, and supporting rolls 2.2 having the same diameter in the axial direction are used. Sleeve rolls 3.3' are loosely fitted in the sleeve rolls 3 and 3', and these rolls are supported by roll chocks and rolling devices, similar to rolling mills that have been developed so far, and the roll bending device is also equipped with this. It is designed to be able to apply what has been developed up until now.

Then, support rolls with equal diameter in the axial direction? , 2' are loosely fitted with respect to the three 71- and l-3. is, for example, formed by an axial odd function curve such as a cubic function.

As shown in FIG. 1, in the standard state, the cross section of the rolled material 4 is flat (j) in the axial direction.

When the sleeve rolls 3 and 3' of the upper and lower work rolls 1.1' are relatively moved relative to each other from the reference state shown in FIG. 1, the contours shown in FIG. 4 are obtained. It is possible to control the shape of the plate crown into a concave shape 4' or a convex shape 4'' as shown in FIG.

As shown in FIG. 2, by imparting roll bending, the shape control of the rim can be further assisted and finely adjusted, and a desired temporary crown can be obtained.

These are capable of (Jt 11711), and the plate crown can be further easily controlled by using the OF.

That is, by relatively moving the pair of upper and lower sleeve rolls 3.3' in the axial direction, the sleeve rolls 3.3'
By locating the ends of the sleeve rolls 3.3' on the outside of the rolled material 4, the geometry of the sleeve roll 3.3' is imparted symmetrically to the rolled material, resulting in the desired sheet crown (9). I can do it.

Furthermore, by applying roll bending in the process, it is possible to perform fine adjustment by roll deflection in addition to shape control by relative axial movement, and it is possible to obtain the required accurate plate shape.

In the invention filed with , the plate crown is significantly controlled by geometric control by shifting the sleeve roll in the axial direction, and fine adjustments are made by roll bending as necessary, which is different from the conventional plate crown control method. They are based on fundamentally different concepts.

Furthermore, the relative movement of the sleeve roll in the axial direction can be performed extremely smoothly since it is guided by the support roll.

Since the above-mentioned embodiments are basic embodiments of two-high rolling rolls, the grooves can be applied to four-high and six-high rolling rolls without any problems, and examples of these application modes are described below. Next, the embodiment shown in Fig. 6.7 has four stages 1-
1. It is in the form of a rolling roll, and the upper and lower parts of the work roll are
- The roll 11.1'' is similar to the conventional straight type, and the upper and lower reinforcing rolls 5.5' are
6.6.
' has a cylindrical shape, and the sleeve roll 7 is loosely fitted into this.
．． 7' is provided with an odd function curve such as a cubic function in the axial direction, and from the standard state shown in FIG. The root crown of the rolled material 4 can be controlled through the work [1-rules 1' and 11] by relative movement in the axial direction on the supports J and F1n-rues 6.6', and As shown in FIG. 7, by applying roll bending to the sheet crown, it is possible to increase the amount of control of the plate crown or to make fine adjustments.

The embodiment shown in Fig. 8.9 is a six-high rolling roll, in which a sleeve roll is used for the intermediate tall pair 11.8', and the sleeve roll loosely fits into the support roll 9.9'. 10.10' has a profile given by an odd function curve such as an axial cubic function and is arranged point symmetrically, and the work roll pair 11.11 and reinforcing rolls 5'', 5''' are straight types. By applying relative movement in the axial direction to the sleeve rolls 10 and 10' in the manner shown in FIG. 8, the plate crown of the rolled material 4' can be controlled. As shown in the figure, by applying [1-ru pending to the intermediate roll 8.8', shape control of 1m is further assisted,
Alternatively, it becomes possible to make fine adjustments.

Next, in the embodiment shown in FIG. 10, the work roll pair 11.1
1 was made into a straight 1~ shape, and an intermediate roll pair 8.8';
A sleeve type roll is disposed on the reinforcing roll 5.5', and in the intermediate roll pair 8.8', the sleeve roll 10.10' is given a curved profile with a point-symmetric axial odd function curve, A sleeve roll 7.7', the contour of which matches this, is placed 180° symmetrically.
Reinforcement 1-1-ru 5.5' that loosely fits into the support roll 6.6'
Of course, in this embodiment, the intermediate roll pair 8.8' and the reinforcing roll pair 5.5'' are provided with not only relative movement in the axial direction, but also 1]-repending. In addition, it is possible to control the desired plate crown.

Furthermore, in Fig. 11, poly-example a3 is a four-high rolling roll mode, and all of the work [1-rule 1.1', reinforcing [1-rule; using a roll,
Equipped with relative movement in the axis IJ direction and roll bending! −
Similarly to each of the present embodiments, it is possible to control the desired plate free run.

In addition, in the example shown in Fig. 12, sleeve rolls are used for the work roll pair 1.1' and the reinforcing roll pair 5.5', and sleeve rolls are used for the intermediate roll 11'' and the ξ pair. This is an embodiment using a rate type II-rule, and in this embodiment, a3-
b 41 work [1-ru cauterization 1.1' and reinforcing roll pair 5.5'
In this embodiment, plate crown control is performed by imparting relative axial movement or relative axial movement and roll bending to the threes 13.3' and 5.5'.

Furthermore, in the embodiment not shown in FIG.
, 5' as Stray 1~Roll, work roll pair 1
．． 1' and a pair of intermediate rolls 8 and 8' are sleeve rolls, and this embodiment also applies relative movement in the axial direction and roll bending to create a desired temporary crown in the rolled material. This is an embodiment in which the shape can be controlled so that it can be applied to 4.

It goes without saying that the actual IM aspect of the invention of this application is not limited to the above embodiments, for example, two-stage, four-stage,
Relative movement in the axial direction with respect to the 6-high rolling rolls, and
Various modes that can impart bending can be adopted.

<Effects of the Invention> As described above, according to the invention of this application, sleeve rolls are used for at least a pair of upper and lower rolls of a rolling roll such as a 2-stage, 4-stage, or 6-stage rolling roll, and the sleeve is loosely fitted to the support roll. Roll the roll in the axial direction to an odd function curve such as a cubic function J,
'1111
By applying relative movement on the :/j plane, the roll deflection caused by the conventional human FI V bending device can be reduced.
In contrast, it not only makes it possible to easily control the shape of the rolled material, but also has the excellent effect of greatly increasing the range of shape control.

In addition, since the sleeve roll slides on the support 1 call, there is no need for a multi-layer 3-1 guide or shift I-device.
There is a version 5r'+r which can be shifted by using a support [1-ru] as a kite and can be easily adopted even if it is used in a double rolling mill ffl/.

Furthermore, since roll bending can be used in conjunction with relative movement in the axial plane (13-C-b roll bending can be used supplementarily, fine adjustments and corrections can be easily made). In addition, since the bending force perpendicular to the axial direction on the entire roll is small, the power is also reduced, and there is no problem such as the limitation of V'-1 bending, and the design can be freely adjusted. It has the excellent effect of imparting polish.

[Brief explanation of drawings]

The drawings are detailed explanatory diagrams of the invention of this application, and are shown in Section 1.2.
The figure is a partial sectional view of an embodiment of a two-high rolling roll, Section 3.4.
Figure 5 shows the base state of the rolled material and a cross-sectional view of the rolled plate.
Figures 1 to 13 are partial cross-sectional views of sleeve roll embodiments for various types of rolling mills. 2.2'...Support roll, 3.3'...Sleeve roll, 4...Rolled material,
1.1'...Work roll, 8.8'...Intermediate roll, 5.5'...Reinforcement [1-ru

Claims (2)

[Claims] (1) In a rolling method in which relative movement in the axial direction is imparted to the sleeve roll in the process of rolling a rolled material with a roll having a pair of rolls in which a sleeve roll is fitted to a support roll, the profile has a length in the axial direction. A rolling method characterized in that relative movement in the axial direction is imparted to the pair of sleeve rolls, which are formed by an odd function curve and are arranged point-symmetrically with respect to each other. (2) In a rolling method in which relative movement in the axial direction is imparted to the sleeve roll in the process of rolling a rolled material with a roll having a pair of rolls in which a sleeve roll is fitted to a support roll, the profile has a length in the axial direction. A rolling method characterized in that relative movement in the axial direction is imparted to the pair of sleeve rolls, which are formed by an odd function curve and arranged point-symmetrically with respect to each other, and roll bending is imparted to the pair.