JPS61229449A - Pouring device for continuous casting machine for thin sheet - Google Patents

Abstract

PURPOSE:To eliminate the spacing between a casting mold and tundish nozzle and to eliminate the possibility of molten metal leakage by forming any of the upper, lower, left and right nozzle forming parts of the tundish nozzle to a tapered shape movable in the axial line direction. CONSTITUTION:The tundish 5 of a pouring device for an endless track type continuous casting machine 1 for a thin sheet which constitutes the moving mold 3 by connecting endlessly many blocks 2 and combining such molds above and below to form a casting mold space 4 is inserted into the above-mentioned casting space 4 by the operation of a cylinder 12 and the pouring operation is executed. The upper nozzle forming part 6a among the upper, lower, left, right nozzles 6a, 6b, 6c, 6d forming the nozzle 6 of the above-mentioned tundish 5 is partly formed to the movable tapered nozzle forming part 6A which is moved in the axial line direction by the operation of a push and pull cylinder 7 so as to be adapted to the above-mentioned casting mold space 4. The generation of a solidified shell is prevented by providing a burner 9 held to a frame 8 and preheating the above-mentioned nozzle 6 or connecting an oscillation device (not shown) to the movable nozzle forming part 6A.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a water heater for a continuous thin plate casting machine.

[Prior art 1] As shown in FIG. 8, as an apparatus for continuously casting thin metal sheets, a moving mold is constructed by connecting a large number of blocks a in an endless manner, and the moving molds are assembled vertically. An endless track continuous thin plate casting machine is known in which a mold space C is formed between the two.

The molten metal is supplied to the continuous casting machine by a nozzle e fixed to the tundish d to the opening at one end of the mold space C.
This is done by inserting . At this time, as shown in Fig. 9, there is a gap S1 and S between the inner wall of the mold and the outer wall of the nozzle e.
2 is formed, and this gap S1 and $2 are 0.2 to 0.
．． If it exceeds 3 mm, it will cause water leakage, so it is necessary to prevent these gaps S+ and S2 from occurring.For this purpose, it has conventionally been considered to form a taper on the outer peripheral surface of the nozzle e.

[Problems to be Solved by the Invention] However, simply forming a taper on the outer circumferential surface of the nozzle e does not necessarily eliminate both gaps S+ and 82, and there is a problem that problems occur when worn. .

[Means for Solving the Problems] The hot water supply device for a continuous thin plate casting machine of the present invention has at least one of the upper, lower, left, and right nozzle forming portions forming the tundish nozzle in the direction of the nozzle axis. It is configured to be movable, and the movable nozzle forming portion is formed in a tapered shape.

[Function] Therefore, by adjusting the position of the movable nozzle forming portion when inserting the tundish nozzle into the mold space, the gap between the mold and the nozzle is eliminated.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes an endless track type continuous thin plate casting system in which a moving mold 3 is constructed by connecting a large number of blocks 2 in an endless manner, and a mold space 4 is formed by combining the moving molds 3 vertically. 5 is a tundish inserted into the mold space 4 of the continuous casting ti1 to perform heating work.

The nozzle 6 of the tundish 5 is constructed by dividing a part of the upper nozzle forming part 6a of the upper, lower, left, and right nozzle forming parts 6a, 6b, 6c, and 6d from the other forming parts to form a movable nozzle forming part. 6A, the movable nozzle forming portion 6A is formed in a tapered shape, and the movable nozzle forming portion 6A is moved in the tundish 5 axis direction (second
It is designed to be able to slide in the horizontal direction (as shown in the figure). 1. The outer surfaces of the left and right nozzle forming portions 6c and 6d are also slightly tapered.

Also, continuous casting I! A heating burner 9 held by a U-shaped frame 8 when viewed from the front is provided at an upstream position of the casting line 11, and the heating burner 9 is moved through the casting line by the operation of a side shift cylinder 10 connected to the frame 8. It is possible to move in a direction perpendicular to the Further, the insertion operation of the tundish 5 into the mold space 4 is performed by an insertion cylinder 12 via a truck 11.

In such a configuration, when heating the continuous casting v11 using the tundish 5, first, the heating burner 9 is moved to a position on the line by operating the side shift cylinder 10, and the heating burner 9 is moved to the position shown in FIGS. The nozzle 6 of the empty tundish 5 is heated as shown in the figure. After heating for the required time, the heating burner 9 is moved back, and then the tundish 5 is moved forward by operating the insertion cylinder 12, and the nozzle G is inserted into the mold space 4. At this time, the movable nozzle forming part 6
Lower A slightly and insert the left and right nozzle forming parts 6.
Insert until the tapered outer surfaces of c and 6d touch the inner surface of the mold 3. Thereafter, by operating the push/pull cylinder 1, the movable nozzle forming portion 6A is slid until its upper surface contacts the inner surface of the mold 3. As a result, all four outer surfaces of the nozzle 6 are in contact with the mold 3 without any gaps.

Then, pour the molten metal into the tundish 5, and pour the molten metal into the nozzle 6.
Molten metal is supplied into the mold space 4 from the mold space 4.

In the above, since the nozzle 6 of the tundish 5 is preheated by the heating burner 9, the molten metal flows through the nozzle 6.
No solidified shell is generated on the inner surface of the nozzle 6 even after passing through the inner surface of the nozzle 6.

Furthermore, since the nozzle 6 and the mold 3 are in contact with each other without any gap, there is no risk of leakage.

Furthermore, during the refueling operation, the movable nozzle forming portion 6A is activated by the push/pull cylinder 7 or a separate oscillation device (not shown).
By applying oscillation in the heating direction to the nozzle 6, abnormal growth of a solidified shell around the nozzle 6 can be prevented.

5 and 6 show other embodiments of the present invention, and in the case of this method, left and right nozzle forming portions 6c, 6
A part of d is formed into movable nozzle forming parts 6C and 6D. In the case of this method, only one of the left and right nozzle forming parts 6C and 6d may be made into the movable nozzle forming parts 6C and 6D.

In this system, although the vertical and horizontal relationships are reversed from those in the previous embodiment, the same effects can be obtained.

FIG. 7 shows still another embodiment of the present invention, and in the case of this method, the upper nozzle forming part 6a and the right (or left)
A part of the nozzle forming part 6d is integrated into a movable nozzle forming part 6A.
This was done with D.

Therefore, in the case of this method, both the width and thickness of the mold 3 are sealed with one adjustment.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] As explained above, the thin plate continuous casting machine of the present invention has a monthly salary of a! According to the device: (1) The tundish nozzle can be easily inserted into the mold without any gaps, eliminating the risk of leakage.

α) Since the tundish nozzle can be heated before being inserted into the vI type, it is possible to prevent the formation of solidified shells on the inner surface of the nozzle.

(To) Since the movable nozzle forming part can be oscillated during hot water supply work, abnormal growth of the solidified shell around the nozzle can be prevented, and breakouts and plate breaks can be eliminated.

It can produce excellent effects such as

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a tanditsu, which is the main component of the water heater of the present invention, FIG. 2 is a cutaway side view of FIG. 1, and FIG.
The figure is a schematic diagram showing the entire supply 5Vivx of the present invention, FIG. 4 is a view along the rV-rV arrow in FIG. 3, FIG. A cutaway plan view of
FIG. 7 is an explanatory diagram showing still another example of the tandish, FIG. 8 is an explanatory diagram of a conventional example, and FIG. 9 is a view taken along the tX-■ arrow in FIG. 1 is a thin plate continuous casting machine, 5 is a tundish, 6 is a nozzle, 6A is a movable nozzle forming part, 1 is a push/pull cylinder, and 9 is a heating burner. Patent application: Hitoshi Kawajima Harima Heavy Industries Co., Ltd. Patent application: Nippon Steel Tube Co., Ltd.

Claims (1)

[Claims] 1) At least one of the upper, lower, left, and right nozzle forming portions forming the tundish nozzle is movable in the nozzle axis direction, and the movable nozzle forming portion is tapered. A hot water supply device for a continuous thin plate casting machine, characterized in that it is formed into a thin plate continuous casting machine. 2) At least one of the upper, lower, left, and right nozzle forming portions forming the tundish nozzle is configured to be movable in the nozzle axis direction, and the movable nozzle forming portion is formed in a tapered shape, and further A water heater for a continuous thin plate casting machine, characterized by comprising a heating device for heating a tundish nozzle. 3) At least one of the upper, lower, left, and right nozzle forming portions forming the tundish nozzle is configured to be movable in the nozzle axis direction, and the movable nozzle forming portion is formed in a tapered shape, and further, the movable nozzle forming portion is formed in a tapered shape. A water heater for a continuous thin plate casting machine, characterized in that an oscillation device is connected to a movable nozzle forming section.