JPH08318351A - Twin roll type continuous casting equipment - Google Patents

Abstract

PURPOSE: To provide twin roll type continuous casting equipment easily changeable of many kinds of cooling rolls different in the roll width in a short time. CONSTITUTION: In this twin roll type continuous casting equipment, a mold part is formed with one pair of rotating cooling rolls 51 and both side weirs 52 pressed onto both end surfaces of both cooling rolls 51 with each pressing cylinder 4 through a side weir supporting frame 53, respectively. A movable stand 1 supporting the pressing cylinder 4, a supporting shaft 5 and the side weir supporting frame 53 is slidably supported along a rail 15 on a base 14. The movable stand 1 is displaced by a motor 11 by engaging a ball screw 13 with a ball nut 3, thereby the interval between both side weir supporting frames 53 can easily be changed while being matched with the width of the cooling rolls 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding section comprising a pair of rotating cooling drums and both side dams which are pressed against both end faces of both cooling drums by side cylinders through side dam support frames. The present invention relates to twin drum type continuous casting equipment.

[0002]

2. Description of the Related Art A conventional twin-drum type continuous casting facility is shown in FIG.
And an example shown in FIG. FIG. 4 is a perspective view showing a schematic configuration of an example of a water cooling drum and a side weir of a conventional twin-drum type continuous casting facility, and FIG. 5 is a side view showing a side weir and its pressing and vibrating device.

In FIGS. 4 and 5, reference numeral 51 denotes a pair of water-cooled drums, which are arranged side by side with a required gap corresponding to the plate thickness of the cast slab 50a, and are arranged side by side by a bearing (not shown). The drive side is connected to a drive device and a drain pipe (not shown), and the working side is connected to a water supply pipe. Reference numeral 52 denotes a side dam, and a wedge 52a thereof is fitted and supported from above by a support plate 53a of the side dam support frame 53. This pair of water cooling drums 5
The mold portion 60 is formed by 1 and the side dam 52.

A pressing cylinder 54 is mounted on a fixed stand 57 via a half-split spacer 58, and its rod portion 54a penetrates the fixed stand 57 and is connected to the side dam support frame 53. Reference numeral 55 denotes a support shaft, which is attached to a fixed stand 57 via a spacer 58, penetrates the fixed stand 57, and has a tip end connected to the side dam support frame 53.

A vibrating shaft 56 is mounted on a fixed stand 57 via a spacer 58, and an eccentric roller 56a is fitted to the tip of the vibrating shaft 57 to generate a vibrating force by rotation. Then, the side dam 52 and the side dam support frame 53 are rotated about a support shaft 55 by being rotated by a drive device (not shown) and the rotation of the eccentric roller 56a. A device for pressing, vibrating, etc. attached to the side dam 52 is also installed on the side of the water cooling drum 51 opposite to the end face shown in FIG.

While the cooling water is circulated through both water cooling drums 51, both side dams 52 are pressed against both end surfaces of both water cooling drums 51 by pressing cylinders 54, and a vibration shaft 56 is rotated to rotate both side cooling dams 51. The side weir 52 of the above is vibrated, the molten metal 50 is continuously supplied to the mold portion 60, and is cooled and solidified by the water cooling drum 51 to form a strip-shaped slab 50.
Discharge a from below.

When changing the drum width W of both water cooling drums 51, the pressing of the side dam 52 by the pressing cylinder 54 is released, and the side dam 52 is supported by the side dam support frame 53.
, And each half-split spacer 58 is disassembled and removed. Then, the side dam support frame 53, the pressing cylinder 54, the support shaft 55, and the vibrating shaft 56 are moved in the horizontal direction in combination with the spacer 58 corresponding to the drum width W to change the distance between the side dam support frames 53. Then, both the water cooling drums 51 and the side dams 52 are mounted and the continuous casting of the slab 50a is restarted.

[0008]

In the conventional apparatus, when the drum width W of the water cooling drum 51 is changed, the width of both side dams 52 is changed by changing the spacer 58 to a length corresponding to the drum width W. The dimensions were changed to match the drum width W of the water-cooled drum 51 to be rearranged.

Therefore, each time the drum width W is changed, it is necessary to replace the spacer 58 with a spacer 58 having a different length.
The change time of the drum width W of 1 becomes long, and the downtime of the equipment increases. In addition, various types of slabs 50 having a slab width Wa
When a is required and there are many types of the drum width W of the water cooling drum 51, it is necessary to manufacture and store the spacer 58 corresponding to the water cooling drum 51 of each drum width W.

An object of the present invention is to provide a twin-drum type continuous casting facility that can easily change a large number of types of cooling drums having different drum widths in a short time.

[0011]

According to the present invention, there are provided a pair of rotating cooling drums and both side dams which are respectively pressed against both end faces of the cooling drums by a pressing cylinder through side dam supporting frames. In order to solve the above-mentioned problems in the twin-drum type continuous casting equipment in which the mold portion is formed, a configuration in which a horizontal direction moving device is provided in the side dam support frame and the pressing cylinder is adopted.

[0012]

The twin-drum type continuous casting equipment according to the present invention has the above-described structure. During normal operation, both cooling drums are rotated in opposite directions and the side dam is pressed by the cylinder to form the side dam support frame. It is pressed against both end faces of the cooling drum through continuous feeding of the molten metal to the mold portion for cooling, and the solidified slab is discharged downward.

On the other hand, when it is necessary to change the drum widths of both cooling drums, first, the pressing cylinder is released from pressing the side dam on both end surfaces of the cooling drum, and the side dam is moved from the side dam supporting frame. Remove and remove cooling drum.

Next, the side weir support frame and the pressing cylinder are moved by the horizontal moving device provided in the continuous casting equipment of the present invention to change the width dimension of both side weirs. The width of the slab is set corresponding to the width of the slab, a cooling drum having a drum width corresponding to the width of the slab is attached, and the side dam is attached to the side dam support frame. In this way, after setting both cooling drums to the desired drum width, the side weirs are pressed against both end surfaces of both cooling drums, and continuous casting of the slab is resumed.

[0015]

EXAMPLE A twin-drum type continuous casting facility according to the present invention will be specifically described below based on an example shown in FIGS. FIG. 1 is a side view showing a side weir and its pressing / vibrating device in a twin-drum type continuous casting facility according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a side weir width changing control device. 3 is a flow diagram summarizing the procedure for changing the width of the side weir. In FIG. 1, the same members, parts and devices as those of the conventional equipment shown in FIGS. 4 and 5 are designated by the same reference numerals, and a duplicate description thereof will be omitted.

In FIG. 1, 1 is a moving stand,
A pressing cylinder 4, a support shaft 5 and a vibration shaft 6 are mounted. The rod portion 4a of each pressing cylinder 4 is connected to the side dam support frame 53, and the eccentric roller 6 for vibration is provided at the tip of the support shaft 5 and the tip of the vibration shaft 6.
a is rotatably fitted in the side dam support frame 53.

Reference numeral 14 is a base, and the rail 1 on the upper surface thereof.
A guide 2 on the lower surface of the movable stand 1 is slidably inserted into the movable stand 5, and is screwed with a ball nut 3 on the lower surface of the movable stand 1 to be connected to a motor 11 having a rotation angle detector 12. 13 are decorated.

In FIG. 2, the side weir width changing control device 20 includes a drum width dimension calculation processing unit 21 and a drum width dimension storage unit, which receive from the rotation angle detectors 12 on the driving side and the working side of the water cooling drum 51, respectively. Section 23, a drum width dimension comparison calculation section 22 received from the drum width dimension calculation processing section 21 and received from the drum width dimension storage section 23, and both motors 11 received from the drum width dimension comparison calculation section 22 respectively. It is configured by a motor operation instructing section 24 to be operated.

Next, the operation of this apparatus will be described. Both the water cooling drums 51 are rotated in opposite directions, and the side dam 52 is pressed against both end surfaces of the water cooling drum 51 by the pressing cylinder 4 via the side dam support frame 53.
Molten metal is continuously supplied to a mold portion including the water cooling drum 51 and the side dam 52 to cool and solidify the slab 50a.
Is discharged downward.

When changing the drum width W of both the water cooling drums 51, the pressing of the side dam 52 by the pressing cylinder 4 to both end surfaces of the water cooling drum 51 is released, and the wedge 52a is formed.
Is pulled upward from the support plate 53a of the side dam support frame 53 to remove the side dam 52 from the side dam support frame 53, and further both cooling drums 51 are removed.

Then, the required drum width W to be changed is instructed to the drum width dimension storage section 23 in which the dimensions of each drum width W are stored in advance. Then, the motor 11 is operated by the motor operation instructing section 24 to rotate the ball screw 13, move the ball nut 3 in the horizontal direction, and move the moving stand 1 on the rail 15 to drive the water cooling drum 51. And each of the working-side pressing cylinder 4, support shaft 5, vibration shaft 6, and side dam support frame 53.
To move.

The rotation angle detectors 12 on the driving side and the working side are
The rotation angles of both motors 11 are detected and transmitted to the drum width dimension calculation processing unit 21, respectively, and converted into a drum width fluctuation dimension. The drum width dimension comparison / calculation unit 22 calculates the drum width required variation dimension based on the previously designated drum width dimension and the newly designated drum width dimension, compares the calculated dimension with the detected dimension, and The required operation amount of the motor 11 required to equalize both dimensions is calculated and transmitted to the motor operation instructing section 24.

The motor operation instructing section 24 rotates the driving-side and working-side motors 11 until the dimensional difference becomes zero. A summary of the above procedure for changing the width of the side weir is shown in the flow chart of FIG.

A water-cooling drum 51 having a drum width W corresponding to the cast piece width Wa to be changed is mounted between the side dam support frames 53 thus set to have a required width dimension, and both side weir support frames 53 are further mounted. Side weir 52 and wedge 52a
Are respectively attached to the side dam support frames 53, and the side dams 52 are pressed against both end surfaces of both water cooling drums 51 by the pressing cylinder 4 via the side dam support frames 53,
The continuous casting of the slab 50a is restarted.

[0025]

According to the twin drum type continuous casting equipment of the present invention,
Even if the cooling drum is changed to one with various drum widths, the dimension between both side dams is shortened by providing the horizontal moving device on the side dam support frame and the pressing cylinder that support both side dams. It is possible to easily change the time without any steps, and it is possible to shorten the time for changing the width of the cooling drum and shorten the downtime of the equipment. Further, a width adjusting member (spacer) corresponding to various kinds of drum width changes becomes unnecessary.

[Brief description of drawings]

FIG. 1 is a side view showing a side weir and its pressing / vibrating device in a twin-drum type continuous casting facility according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a side weir width changing control device in a twin-drum type continuous casting facility according to an embodiment of the present invention.

FIG. 3 is a flow chart summarizing the procedure of changing the width of a side weir in a twin-drum type continuous casting facility according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a schematic configuration of an example of a water cooling drum and a side weir of a conventional twin-drum type continuous casting facility.

FIG. 5 is a side view showing a side weir and its pressing / vibrating device in a conventional twin-drum type continuous casting facility.

[Explanation of symbols]

 1 Moving Stand 2 Guide 3 Ball Nut 4 Pressing Cylinder 5 Support Shaft 6 Excitation Shaft 11 Motor 12 Rotation Angle Detector 13 Ball Screw 15 Rail 50a Cast Piece 51 Water Cooling Drum 52 Side Weir 53 Frame Side Weir Support Frame W Drum Width Wa Cast Piece width

Claims (1)

[Claims] 1. A mold part is formed by a pair of rotating cooling drums and both side dams respectively pressed by a pressing cylinder on both end faces of both cooling drums via side dam supporting frames, and the side parts are formed. A twin-drum type continuous casting facility characterized in that a horizontal movement device is provided on the weir support frame and the pressing cylinder.