TWM552391U - Two-roll continuous casting slab corner rolling - Google Patents

Description

Two-roll continuous casting billet horning device with inclined rolls

The present invention relates to the field of metal solidification and continuous casting, and more particularly to a two-roll continuous casting billet horn device having inclined rolls.

In today's strip and strip production technology, edge cracks or warping defects are common, especially in the near future, with the development of plate production technology, the stretch ratio of the sheet is increasing, and the edge of the sheet is straight or warped. The defect is also further away from the edge of the sheet and further closer to the center. Iron and steel enterprises have to use the method of increasing the amount of trimming and reducing the rate of finished products to remove the above defects and meet the quality requirements, but this also causes a substantial increase in the production costs of enterprises.

In view of this, in addition to the optimization of molten steel quality, secondary cooling technology and reasonable rolling, metallurgical workers adopt a main technical measure of adopting chamfering crystallizer technology. In the prior art, the use of side chamfered crystallizer technology is relatively common. Although the use of chamfered crystallizer technology can effectively solve the problem of transverse cracks in the corner of the slab, the results of mass production practice show that the continuous casting billet produced by the chamfering crystallizer technology with the above parameters is chamfered The chamfer angle formed by the surface and the upper and lower sides of the slab is small, generally less than 135o, and the slab of this shape cannot completely eliminate the defects such as straight cracking or warping of the edge of the strip during the subsequent rolling process.

Therefore, some metallurgical workers at home and abroad have developed a method of rolling the corners of the slab to obtain a slab with a more reasonable corner shape.

For example, Chinese Patent No. CN204747439U discloses "a device for performing corner casting of continuous casting billet", which is placed on the left and right sides of the billet, that is, each side of the billet has a convex edge at the upper and lower ends. The chamfering roll is driven by a driving force, and a chamfering roll with a convex edge is rolled toward the casting blank, and the corner of the casting blank is rolled by the convex edge of the rolling roll to realize chamfering of the corner portion of the casting blank. Further optimize the shape of the corners in order to meet the need to eliminate defects such as straight cracks or buckling of the middle plate during the widening and rolling process. However, in actual production applications, the chamfered rolls with the convex edges are rolled from the side to the corners of the slab, rather than the corners of the slab. This inevitably brings two problems: one is that the rolling pressure is large, and the other is that the life of the rolls is lowered due to friction.

In view of the deficiencies and deficiencies in the above prior art, the object of the present invention is to provide a two-roll continuous casting billet angling apparatus having inclined rolls.

In order to achieve the above objectives, the present invention provides the following technical solutions:

The present invention provides a two-roll continuous casting sizing device with inclined rolls, which comprises a chamfering roll, a roll supporting frame, a connecting piece and a driving push rod; the roll supporting frame is connected with a driving push rod which can be moved back and forth, and the roll support The two cantilever ends of the frame are respectively provided with a chamfering roll; the two chamfering rolls are oppositely arranged, and the roll surface of the chamfering roll is inclined at an oblique angle to the wide surface of the casting blank. The device is mounted on the left and right sides of the continuous casting billet, and the corners of the continuous casting billet are continuously rolled.

Preferably, the two chamfer rolls on the two cantilever ends of the roll support frame are symmetrically disposed or asymmetrically disposed.

Preferably, the two cantilever ends of the roll support frame have a "U" or "Y" configuration, and the middle portion of the frame is driven by the drive pusher via the connector.

Preferably, the roller shaft of the chamfering roll is disposed at an angle α with the wide surface of the continuous casting blank, and the angle α is 0o to 45o; the rolling surface of the chamfering roll and the wide surface of the continuous casting blank or the curved roller of the chamfering roll The curved tangent of the surface of the wide surface of the continuous casting billet is set at an angle β with the wide surface of the continuous casting blank, and the angle β is 1o to 45o.

Preferably, the chamfering roll and the roller shaft have a separate structure or are of a unitary structure.

Preferably, the roll surface of the chamfering roll is a uniform cylindrical shape, a non-uniform frustum shape, an arcuate frustum or a grooved shape.

Preferably, the chamfering rolls have a diameter of from 100 to 350 mm, and the chamfering rolls have a roll surface length of from 100 to 350 mm.

Preferably, the driving force for driving the driving of the push rod is hydraulic pressure, electric power or mechanical force.

Preferably, the device is disposed at the exit of the continuous casting machine or within the sector of the continuous casting machine.

Preferably, the apparatus is used for corner rolling of billet, rectangular billet or slab, and the applicable continuous casting billet has a thickness of 90 mm to 500 mm.

Preferably, the device is suitable for both the rolling of the chamfered continuous casting billet and the rolling of the right angle casting billet and the arc corner casting billet.

Compared with the prior art, the beneficial effects of the present creation are:

The creation device is installed on the left and right sides of the continuous casting slab. As the casting process of the continuous casting machine proceeds, the driving pusher of the two-roll continuous casting slab device with inclined rolls moves toward the continuous casting slab under the driving of power. The corners of the continuous casting billet are rolled. Then, with the movement of the slab, the chamfering rolls continuously roll-roll the corners of the slab, and the rolling amount of the chamfering rolls to the corners of the slab is mainly determined by the driving force of the driving ram. The larger the driving force, the larger the amount of chamfering at the corner of the continuous casting billet. At the same time, since the axis of the chamfering roll is inclined, and the roll surface of the chamfering roll is inclined, a good angle for the forward rolling of the corner of the continuous casting slab can be obtained, and under the condition of small rolling force The desired corner shape of the slab is obtained. At the same time, the roll life is greatly improved by reducing the friction between the rolls and the continuous casting billet.

This creation can realize the forward rolling of the corner of the continuous casting billet, so it has the advantages of small rolling resistance and simple equipment maintenance.

The present invention will be further described below in conjunction with the embodiments.

A two-roll continuous casting horn apparatus having a slanted roll of the present invention comprises a chamfering roll 1, a roll 2, a roll support frame 3, a connecting member 4 and a drive pusher 5. The roll support frame 3 is connected to the drive push rod 5 which is movable forward and backward. The two cantilever ends of the roll support frame 3 are respectively provided with a chamfer roll 1; the two chamfer rolls 1 are symmetrically arranged, and the roll face of the chamfer roll 1 It is inclined at an angle to the wide surface of the slab.

The apparatus is mounted on the left and right sides of the continuous casting blank 6, and the corners of the continuous casting blank 6 are continuously rolled.

The two chamfering rolls 1 on the two cantilever ends of the roll support frame 3 can be arranged symmetrically or asymmetrically.

The two cantilever ends of the roll support frame 3 have a "U" or "Y" shape, and the middle of the frame is driven by the drive pusher 5 via the connecting member 4.

The roller shaft 2 of the chamfering roll 1 is disposed at an angle α with the wide surface of the continuous casting blank 6, and the angle α is 0o to 45o; the rolling surface of the chamfering roll 1 and the wide surface of the continuous casting blank 6 or the arc of the chamfering roll 1 The curved tangent of the contact surface of the roll surface with the wide surface of the continuous casting blank 6 is set at an angle β with the wide surface of the continuous casting blank 6, and the angle β is 1o to 45o.

The device is installed on the left and right sides of the continuous casting blank 6. As the casting process of the continuous casting machine proceeds, the two-roll continuous casting slab device with inclined rolls is pressed against the continuous casting blank 6 under the driving force of the continuous casting blank, The corner portion of the slab 6 is rolled to form a desired shape. Referring to Fig. 1, the chamfering roll 1 is rotated by the movement of the slab 6 and the corners of the slab 6 are continuously fed. Rolling.

The chamfering roll 1 and the roll shaft 2 may be separate (see Fig. 1) or integral (see Fig. 2).

The roll surface of the chamfering roll 1 may be a uniform cylindrical shape, a non-uniform frustum shape 8, an arcuate frustum 9 or a grooved shape 10 (see Figures 3 to 5), or Other shapes are limited to the above.

The diameter of the chamfering roll 1 is 100 to 350 mm, and the length of the roll surface of the chamfering roll 1 is 100 to 350 mm.

The driving force for driving the movement of the push rod 5 may be hydraulic, electric or other mechanical force or the like.

The device can be placed at the exit of the continuous casting machine or placed inside the segment of the continuous casting machine.

The device can be used for corner rolling of billet, rectangular billet and slab, and the thickness of the suitable strand 6 is 90-500 mm.

The device is suitable for both the rolling of the chamfered continuous casting billet and the rolling of the right angle casting billet and the arc corner continuous casting billet.

1‧‧‧Chamfering rolls
2‧‧‧ Roller
3‧‧‧ Roller support frame
4‧‧‧Connecting parts
5‧‧‧Drive putter
6‧‧‧Continuous slab
7‧‧‧Chamfered roll and roller shaft are integrated structure
8‧‧‧Chamfer roll surface is a uniform frustum shape
9‧‧‧Chamfer roll surface is curved frustum
10‧‧‧Chamfered roll surface is grooved shape α‧‧‧The angle between the roll of the chamfering roll and the wide side of the continuous casting blank β‧‧‧The roll surface of the chamfering roll and the width of the continuous casting blank The angle formed by the face or the angle between the curved tangent of the curved roll surface of the chamfering roll and the wide surface of the continuous casting blank and the wide surface of the continuous casting blank

Figure 1 is a schematic view showing the structure of a two-roll continuous casting billet sizing device with inclined rolls;

Figure 2 is a schematic view showing the structure of the chamfering roll and the roller shaft;

Figure 3 is a cross-sectional shape of the chamfering roll in which the shape of the roll surface is uniform;

Figure 4 is a curved frustum of the chamfering roll;

Figure 5 shows that the shape of the roll surface of the chamfering roll is a grooved shape.

1‧‧‧Chamfering rolls

2‧‧‧ Roller

3‧‧‧ Roller support frame

4‧‧‧Connecting parts

5‧‧‧Drive putter

6‧‧‧Continuous slab

The angle between the roller shaft of the α‧‧‧chamfering roll and the wide surface of the continuous casting blank

The angle formed by the roll surface of the chamfering roll and the wide surface of the continuous casting blank or the curved tangent of the curved roll surface of the chamfering roll and the wide surface of the continuous casting blank and the wide surface of the continuous casting blank angle

Claims (11)

A two-roll continuous casting horn device with inclined rolls, comprising a chamfering roll (1), a roll supporting frame (3), a connecting piece (4) and a driving push rod (5); the roll supporting The frame (3) is connected to the driving push rod (5) which is movable back and forth, and the two cantilever ends of the roll supporting frame (3) are respectively provided with one chamfering roll (1); the two chamfering rolls ( 1) oppositely disposed, the roll surface of the chamfering roll (1) is inclined at an oblique angle to the wide surface of the slab; wherein the two-roll continuous casting slab device having the inclined roll is installed on the left and right sides of a continuous casting slab (6) The corners of the continuous casting slab (6) are continuously rolled on both sides. A two-roll continuous casting horn apparatus having inclined rolls as described in claim 1, wherein the two chamfering rolls (1) on the two cantilever ends of the roll supporting frame (3) are symmetrically disposed, Or asymmetrical settings. The two-roll continuous casting horn apparatus having inclined rolls according to claim 1, wherein the two cantilever ends of the roll supporting frame (3) have a "U" or "Y" shape, and the roll supports The middle of the frame is driven by the drive pusher (5) via the connector (4). A two-roll continuous casting horn device having a slanted roll as described in claim 1, wherein a roll (2) of the chamfering roll (1) is integrated with a wide side of the continuous slab (6) The angle α is set to be 0° to 45°; the roll surface of the chamfering roll (1) and the wide side of the continuous casting blank (6) or the curved roll surface of the chamfering roll (1) and the continuous casting The curved tangent of the wide-surface contact point of the blank (6) is set at a β angle with the wide surface of the continuous casting blank (6), and the β angle is 1o to 45o. A two-roll continuous casting horn apparatus having inclined rolls as described in claim 1, wherein the chamfering roll (1) and a roll (2) are of a split structure or an integral structure. The two-roll continuous casting horn device with inclined rolls according to claim 1, wherein the roll surface of the chamfering roll (1) has a uniform cylindrical shape, a non-uniform frustum shape, and an arc shape. Frustum or grooved shape. The two-roll continuous casting horn apparatus having inclined rolls according to claim 1, wherein the chamfering roll (1) has a diameter of 100 to 350 mm, and the roll length of the chamfering roll (1) It is 100 to 350 mm. A two-roll continuous casting horn apparatus having inclined rolls as described in claim 1, wherein the driving force for driving the driving push rod (5) is hydraulic pressure, electric power or mechanical force. A two-roll continuous casting horn apparatus having inclined rolls as described in claim 1 is disposed at the exit of the continuous casting machine or disposed inside the continuous casting machine sector. The two-roll continuous casting slab device having inclined rolls as described in claim 1 is used for corner rolling of billet, rectangular blank or slab, and the thickness of the continuous casting blank is 90. Mm ~ 500 mm. The two-roll continuous casting slab device with inclined rolls as described in claim 1 is suitable for rolling of chamfered continuous casting billets, and is also suitable for right angle continuous casting billets and arc angle continuous casting billets. Rolling.