TWM535609U - Device for rolling continuous casting slab corner - Google Patents

Description

Device for performing corner casting of continuous casting billet

This work relates to the field of solidification and continuous casting of metals, and in particular to a device for performing corner casting of continuous casting billets.

With the development of metallurgical technology in the world, modern continuous casting technology has been continuously improved, and castable steels have been continuously expanded. Some high-alloy, high-quality, high crack-sensitive steel grades have been continuously produced in the continuous casting production process of large steel enterprises. Especially in the recent development of plate production technology, the rolling width of plates has been increasing. With the increase of the ratio of the continuous casting billet, the edge cracking or warping defects of the medium and heavy plate are more serious. The steel enterprises have to meet the quality requirements by increasing the amount of trimming and reducing the yield. This has led to a significant increase in the cost of production.

To this end, in addition to the optimization of molten steel quality, secondary cooling technology and reasonable rolling, metallurgical workers have adopted a crystallizer technology with chamfering. 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 continuous casting billet, the results of mass production practice show that the continuous casting billet produced by the chamfering crystallizer technology with the above parameters is due to its pouring The chamfer angle formed by the angle surface and the upper and lower wide faces of the continuous casting blank is small, one Generally, it is less than 135°, and the continuous casting of the shape does not 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 continuous casting billet to obtain a more continuous casting billet with a more angular shape.

For example, the Chinese utility model patent CN203725727U filed on March 13, 2014 by the applicant of the present application provides "a support roller device for corner deformation of a chamfered continuous casting billet", which is in the fan segment of the casting machine. Four movable support roller devices are arranged on the inner and outer arcs to deform and roll the four corners of the continuous casting blank, thereby further optimizing the shape of the corners, in order to meet the requirements of eliminating the straight edges during the plate widening and rolling process. The need for defects such as cracks or bumps. However, the position and width of the continuous casting billet in actual production will vary with the change of the continuous casting process system. Therefore, the four corners of the continuous casting billet are rolled by four supporting rollers, and the corner position of the continuous casting billet must be dynamically monitored and fed back to the four supporting roller control cylinders in time to dynamically adjust the position of the supporting roller. This requires a relatively complicated automatic control system and frequent equipment movements, which results in large investment and difficult maintenance of equipment.

In view of the defects and deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a device for performing corner casting of a continuous casting billet, wherein the chamfering rolls are driven by hydraulic cylinders, and the slab corners are driven without rotation. The deformation rolling is carried out, and only the hydraulic pressure can be properly controlled to meet the requirements of the rolling angle and the dynamic movement of the rolls, and a reasonable continuous casting billet shape can be obtained to avoid the continuous casting billet in the subsequent rolling process. Defects such as straight cracks or bumps.

In order to achieve the above objectives, this creation provides the following technical means: A device for performing corner casting of continuous casting billet, comprising a chamfering roll, a roll supporting frame, a roll moving rod, a positioning slide, a hydraulic cylinder rod, a hydraulic cylinder, a hydraulic cylinder support seat and a device base, wherein the chamfering roll comprises a roller The body and its rotating shaft, both ends of the rotating shaft are clamped on the roll supporting frame; the roll moving rod is driven by the hydraulic cylinder to reciprocate on the positioning slide to perform corner rolling on the continuous casting blank to form a chamfer of the continuous casting blank The hydraulic cylinder is supported by the hydraulic cylinder support seat; the hydraulic cylinder support seat is disposed on the base of the device; the roll support frame is connected with one end of the roll moving rod; the other end of the roll moving rod is connected with the hydraulic cylinder rod of the hydraulic cylinder; and wherein the roller body The working surface is divided into a middle portion and a bevel portion on both sides, and the middle portion of the working surface is a positioning surface of the continuous casting billet angle, and the inclined surface portion of the working surface on both sides is the rolling angle surface of the continuous casting billet.

Preferably, the roll support frame is connected to one end of the roll moving rod through the first connecting member; the roll moving rod passes through the positioning slide, the positioning slide is supported by the boss on the base of the device; and the other end of the roll moving rod passes through the second The connecting piece is connected to the hydraulic cylinder rod of the hydraulic cylinder.

Preferably, the roller body and the rotating shaft of the chamfering roll are separate or integral.

Preferably, the positioning slide is tubular or multi-roller supported.

Preferably, the roll support frame includes an upper fork arm and a lower fork arm, and both ends of the rotating shaft are sandwiched between the upper fork arm and the lower fork arm.

Preferably, the upper and lower fork arms are integral with or detachable from the roll support frame.

Preferably, the inner portion of the chamfering roll is internally water-cooled; or the outer portion of the chamfering roll is provided with spray cooling.

Preferably, the device is placed on the equipment base at the location of the rear segment of the continuous casting machine or in the second cold section of the casting machine.

Preferably, the apparatus is used for corner rolling of right angle continuous casting billets and corner rolling of chamfered continuous casting billets.

Preferably, the device is placed perpendicular to the direction of the continuous casting blank; or inclined at an angle such that the chamfering roll is rolled forward by the hydraulic cylinder to the direction of movement of the continuous casting blank and 90 degrees of movement of the casting machine blank Place at °~135°.

Preferably, the hydraulic cylinders may be electric motors, electric digital cylinders, and electric hydraulic cylinders.

Preferably, the thickness of the continuous casting blank suitable for the device is 70 to 500 mm.

Compared with the prior art, the beneficial effects of the present creation are: In the process of rolling, the hydraulic pressure can be controlled to meet the requirements of the dynamic movement of the rolling angle and the roll, and the optimized chamfer shape of the continuous casting billet can be obtained. The continuous casting billet of the shape can not only be After the furnace is baked, a more uniform temperature field of the continuous casting billet is obtained, and the continuous casting billet is rolled, thereby eliminating the straight crack or warping of the edge of the sheet; the device of the creation is simple in manufacturing control, technically reliable, and light in weight. It does not adversely affect the production of continuous casting machines.

1‧‧‧Chamfering rolls

2‧‧‧ Roller support frame

3‧‧‧ Roller moving rod

4‧‧‧ positioning slide

5A‧‧‧First connector

5B‧‧‧Second connection

6‧‧‧Hydraulic cylinder rod

7‧‧‧Hydraulic cylinder

8‧‧‧Hydraulic cylinder support

9‧‧‧ device base

10‧‧‧ equipment base

11‧‧‧Continuous slab

12‧‧‧Multi-roller support positioning guide

13‧‧‧ Roll body

14‧‧‧ shaft

15‧‧‧The middle part of the work surface

16‧‧‧Slope portion of the work surface

171‧‧‧Upper arm

172‧‧‧ lower wishbone

18‧‧‧ bolt

Fig. 1 is a schematic view of the apparatus for performing corner casting of continuous casting billet.

Figure 2 is a schematic illustration of the manner in which the positioning slide is a multi-roller support.

Figure 3 is a schematic view of the chamfering roll as a whole.

Figure 4 is a schematic illustration of the chamfered rolls being split.

Figure 5 is a schematic view of the upper and lower fork arms of the roll support frame being separated.

The specific embodiments of the present invention are further described below in conjunction with the drawings and the embodiments, but are not limited thereto.

As shown in Fig. 1, a schematic view of an apparatus for performing corner casting of a continuous casting billet is shown. The apparatus comprises a chamfering roll 1, a roll support frame 2, a roll moving rod 3, a positioning slide 4, a hydraulic cylinder rod 6, a hydraulic cylinder 7, a hydraulic cylinder support base 8, and a device base 9.

The chamfering roll 1 includes a roller body 13 and a rotating shaft 14, and the roller body 13 is mounted on the rotating shaft 14, and both ends of the rotating shaft 14 are clamped on the roll supporting frame 2. The roll support frame 2 is connected to one end of the roll moving rod 3 through the first connecting member 5A. The roll moving rod 3 passes through the positioning slide 4, which is supported by the boss on the device base 9. The other end of the roll moving lever 3 is connected to the cylinder rod 6 of the hydraulic cylinder 7 through the second connecting member 5B. The hydraulic cylinder 7 is supported by a hydraulic cylinder support base 8. The hydraulic cylinder support base 8 is disposed on the apparatus base 9. The roll support frame 2 is connected to one end of the roll moving rod 3; the other end of the roll moving rod 3 is connected to the hydraulic cylinder rod 6 of the hydraulic cylinder 7. Wherein, the side surface of the roller body 13 is a working surface, and the intermediate portion 15 of the working surface is a positioning surface for the slab casting angle, and the inclined surface portion 16 of the working surfaces on both sides is a slanting surface of the continuous casting slab.

As shown in Fig. 3, the roller body 13 and the rotating shaft 14 of the chamfering roll 1 may be one unitary; or may be a separate body as shown in Fig. 4.

The positioning chute 4 may be in the shape of a pipe as shown in FIG. 1, or may be a multi-roller-supported positioning chute 12 as shown in FIG. 2, or may be in other positioning forms.

The roll support frame 2 may include an upper fork arm 171 and a lower fork arm 172, and both ends of the rotary shaft 14 may be sandwiched between the upper fork arm 171 and the lower fork arm 172. As shown in FIG. 1, the upper fork arm 171 and the lower fork arm 172 may be integral with the roll support frame 2. For the convenience of the chamfering roll 1 installation, The upper fork arm 171 and the lower fork arm 172 may also be separated from the roll support frame 2 as shown in FIG. 5, and the upper fork arm 171 and the lower fork arm 172 are connected to the roll support frame 2 through bolts 18, respectively.

For the continuous casting blank 11 of different thickness sections, the requirements of the corner rolling of the continuous casting slab can be satisfied by replacing the chamfering roll 1 or replacing the chamfering roll 1 and the roll supporting frame 2.

In order to increase the service life of the chamfering roll 1, in use, internal water cooling may be provided inside the chamfering roll 1, or spray cooling may be provided outside the chamfering roll 1.

The device of the present invention can be placed on the equipment base 10 at the position of the rear segment of the continuous casting machine, or can be placed inside the second cold section of the casting machine.

The device of the present invention can be used for corner rolling of a right angle continuous casting billet, or for corner rolling of a chamfered continuous casting billet.

In order to overcome the influence of the continuous casting billet thrust on the device, the device can be placed perpendicular to the direction of the continuous casting billet; or it can be placed obliquely, that is, the chamfering roll 1 is rolled forward by the hydraulic cylinder 7 to the direction of the continuous casting billet. Placed at 90°~135° with the direction of motion of the caster.

The driving force of the chamfering roll 1 may be a hydraulic cylinder as shown in FIG. 1, or may be other methods, such as an electric driving method, including a motor, an electric digital cylinder, an electric hydraulic cylinder, and the like.

When the device of the present invention is used, one of the left and right sides of the continuous casting blank 11 is installed. As the casting process of the casting machine proceeds, the chamfering roll 1 rolls the corner portion of the continuous casting blank 11 under the action of the hydraulic cylinder 7. The method is to perform deformation rolling on the corner of the continuous casting slab under the condition of no rotation driving, so that the continuous casting blank is chamfered. After the chamfering continuous casting billet, in the subsequent rolling process, the occurrence of straight cracks or warping defects on the edge of the steel surface can be effectively avoided, so as to reduce the amount of trimming of the strip and the billet, thereby improving the yield of the continuous casting billet. The thickness of the continuous casting blank suitable for the device is 70~500mm.

1‧‧‧Chamfering rolls

2‧‧‧ Roller support frame

3‧‧‧ Roller moving rod

4‧‧‧ positioning slide

5A‧‧‧First connector

5B‧‧‧Second connection

6‧‧‧Hydraulic cylinder rod

7‧‧‧Hydraulic cylinder

8‧‧‧Hydraulic cylinder support

9‧‧‧ device base

10‧‧‧ equipment base

11‧‧‧Continuous slab

Claims (12)

A device for performing corner casting of continuous casting billet comprises a chamfering roll (1), a roll supporting frame (2), a roll moving rod (3), a positioning slide (4), and a hydraulic cylinder rod ( 6) a hydraulic cylinder (7), a hydraulic cylinder support base (8) and a device base (9); wherein the chamfering roll (1) comprises a roller body (13) and a rotating shaft (14) thereof, Both ends of the rotating shaft (14) of the chamfering roll (1) are clamped on the roll supporting frame (2); the roll moving rod (3) is driven by the hydraulic cylinder (7) at the positioning slide (4) Reciprocating motion to perform corner rolling on the continuous casting blank (11) to form a chamfer; the hydraulic cylinder (7) is supported by the hydraulic cylinder supporting seat (8); the hydraulic cylinder supporting seat ( 8) being disposed on the base (9) of the device; the roll support frame (2) is coupled to one end of the roll moving rod (3); the other end of the roll moving rod (3) and the hydraulic cylinder (7) The hydraulic cylinder rod (6) is connected; wherein the working surface of the roller body (13) is divided into an intermediate portion and a bevel portion on both sides, and a middle portion (15) of a working surface is a positioning surface of the continuous casting billet angle, both sides The beveled portion (16) of a working face is the horn of the continuous casting blank. The apparatus for performing corner casting of a continuous casting billet according to claim 1, wherein the roll supporting frame (2) is connected to one end of the roll moving rod (3) through a first connecting member (5A); The roll moving rod (3) passes through the positioning slide (4), and the positioning slide (4) is supported by a boss on the base (9) of the device; the other end of the roll moving rod (3) passes through a first The two connecting members (5B) are connected to the hydraulic cylinder rod (6) of the hydraulic cylinder (7). The apparatus for performing corner casting of a continuous casting billet according to claim 1, wherein the roller body (13) of the chamfering roll (1) and the rotating shaft (14) are separated Or a whole. The apparatus for performing corner casting of a continuous casting billet according to the first aspect of the patent application, wherein the positioning slide (4) is tubular or multi-roller supported. The apparatus for performing corner casting of a continuous casting billet according to claim 1, wherein the roll supporting frame (2) comprises an upper fork arm (171) and a lower fork arm (172), the rotating shaft (14) Both ends are clamped between the upper fork arm (171) and the lower fork arm (172). The apparatus for performing corner casting of a continuous casting billet according to claim 5, wherein the upper fork arm (171) and the lower fork arm (172) are integrated with the roll supporting frame (2) or Removable and fixed. The apparatus for performing corner casting of a continuous casting billet according to the first aspect of the invention, wherein the inside of the chamfering roll (1) is internally water-cooled, or the outside of the chamfering roll (1) is spray-cooled. The apparatus for performing corner casting of a continuous casting billet according to the first aspect of the patent application, wherein the apparatus is disposed on a device base (10) at a position of a rear segment of the continuous casting machine, or is disposed in the casting machine 2 Inside the cold section. The apparatus for performing corner casting of a continuous casting billet according to the first aspect of the patent application, wherein the apparatus is used for corner rolling of a right angle continuous casting billet and corner rolling of a chamfered continuous casting billet. The apparatus for performing corner casting of continuous casting billet according to item 1 of the patent application, wherein the apparatus is placed perpendicular to the direction of casting of the continuous casting billet; or inclined at an angle of: the chamfering roll (1) is The hydraulic cylinder (7) is placed under the action of the forward rolling to the continuous casting billet and the moving direction of the casting machine is 90° to 135°. The apparatus for performing corner casting of a continuous casting billet according to the first aspect of the patent application, wherein the hydraulic cylinder (7) may be a motor, an electric digital cylinder and an electric hydraulic cylinder. The apparatus for performing corner casting of a continuous casting billet according to the first aspect of the patent application, wherein the apparatus has a continuous casting blank thickness of 70 to 500 mm.