JPS6195749A - Continuous casting machine - Google Patents

Abstract

PURPOSE:To provide a titled lowboy casting machine which produces satisfactorily a steel ingot with easy pouring in a manner as to permit the expansion of the width thereof by pressing an endless corrugated belt to part of the circumferential surfaces of side rings spaced at a prescribed distance and a horizontal rotating roll having a currugated surface and moving synchronously the belt and the roll. CONSTITUTION:The endless corrugated belt 23 is pressed to about 1/4 the circumferential surface of the side rings 26 spaced at W1 and the horizontal rotating roll 22 having the corrugated circumferential surface to form a casting mold 25 and the belt 23 is moved synchronously in the same direction as the rotating direction of the roll 22. The one aperture 25a of the casting mold 25 is a top end face to permit easy pouring. The longitudinal thermal expansion is absorbed by the displacement in the height direction of the corrugation to prevent buckling deformation by which the production of the broad ingot 32 is made possible. Since the ingot 32 is produced under bending, the machine height is decreased.

Description

Detailed Description of the Invention [Technical Field of the Invention J This invention relates to a synchronous continuous casting machine that forms a mold by bringing together a plurality of sets of endless bands that move synchronously at the same speed and in the same direction. It is something.

[Prior art and its problems]

A mold is formed by bringing together a plurality of sets of endless bands that move synchronously at the same speed and in the same direction, and while a slab is formed by this mold, the slab is moved at the same speed and in the same direction as the endless band. A synchronous continuous casting machine is known, which continuously casts the slab by moving it in the direction of the metal.

FIG. 4 is a schematic perspective view showing an example of the conventional continuous casting machine mentioned above.

[Continuous casting machine] is a continuous casting machine that stacks a horizontal endless band 4 made up of a large number of metal blocks 2 and a horizontal endless band 5 made of a similar number of metal blocks 3 one above the other, and A concave portion 6 is formed in the connecting portion 7 of the metal block row 4a located inside the upper endless band 4 and the metal prong row 5a located inside the lower endless band 5.
, a metal Gronk row 5a is formed by connecting the outer surface of the metal block row 4a and the recess 6 of the metal block 3.
A mold 8 is formed by a U-shaped groove, and a nozzle 10 of a tundish 9 is provided at an opening at one end of the mold 8.

According to the continuous casting machine 1 having the above-described structure, the upper and lower endless bands 4,
5 in the direction of the arrow A at the same speed, the molten metal in the tanday sonyu 9 is injected into the mold 8 through the nozzle 10 and rapidly cooled, and the obtained slab 11 is conveyed in the direction of the arrow B. It is possible to continuously cast slabs.

However, in such a conventional synchronous continuous casting machine, the nozzle 10 is provided at one end opening of the mold 8, so when trying to obtain a slab 11 with a thin plate thickness, the molten metal at the nozzle The gap in the height direction of the passage, that is, the length obtained by subtracting the wall thickness of the nozzle 10 from the total height of the nozzle 10 becomes extremely small, making it impossible to supply molten metal to the mold 8.

[Purpose of the invention]

Therefore, it is an object of the present invention to easily inject molten metal into a mold, to prevent buckling from occurring in the endless band forming the mold, to have excellent cooling efficiency, and to provide a mold with excellent quality. An object of the present invention is to provide a continuous casting machine capable of continuously casting slabs.

[Summary of the invention]

The present invention includes a roll that is rotated at a constant speed, has two side rings on its circumferential surface at appropriate intervals, and has a corrugated shape on the circumferential surface between the side rings, and a roll that is in contact with the side ring surface of the roll. , an endless band of a corrugated belt arranged to surround approximately 1/4 circle of the roll and driven in synchronization with the roll, and a side ring of the roll and a belt between the side rings. The roll surface and the corrugated belt form a mold having an opening at one end upward and an opening at the other end in the horizontal direction.

[Structure of the invention]

Next, the present invention will be explained with reference to the drawings.

Fig. 1 is a sectional view conceptually showing an embodiment of a continuous casting machine of the present invention, Fig. 2 is a sectional view showing a mold forming state, and Fig. 3 (ω indicates a corrugated belt). FIG. 3(b) is a sectional view taken along the line AA' in FIG. 3(a).

The continuous casting machine 2I of this invention has a roll 22 and a full P-)
A mold 25 is formed by an endless band 24 which also serves as a belt 23.

As shown in FIG. 2, the roll 22 has a predetermined distance @
A pair of side links 26 are provided with W□ open. The side ring 26 has a corrugated surface 26a. The roll 22 also has corrugated surfaces 22a between the side rings 26.26.

The endless belt 24 connects the corrugated belt 23 to the driving roll 2.
7. It is wound around the driven roll 28.

As shown in FIG. 3(a), the corrugated belt 23 has a corrugated shape at the center in the width direction of the belt as shown in FIG. ing.

Then, the corrugated belt 23 of the endless belt 24 is connected to the corrugated peripheral surface 2 of the side ring 26 provided on the roll 22.
An endless band 24 is arranged so as to surround approximately one-quarter of the surface of 6a.

Therefore, as shown in FIG. 2, a mold 25 is formed by the side ring 26 of the roll 22, the corrugated surface 22a, and the corrugated belt 23 of the endless band 24.

The mold 25 has an opening 25a in the upper part for pouring the molten metal, and an opening 25b in the lower part for extracting the slab in the horizontal direction.

Furthermore, this continuous casting machine 21 includes a sprayer 2 along a corrugated belt 23 located outside the endless belt 2.1.
The corrugated belt 23 is constantly cooled by the cooling water sprayed from the spray 27, and a tunding 7 unit 29 is disposed above the opening 25a for pouring molten metal into the mold 25. The molten metal in the tundish 29 is always injected into the mold 25 through the nozzle 30. Further, a rolling roll 31 is arranged on the extension of the opening 25b for extracting the slab from the mold 25, and corrects the shape of the corrugated surface of the slab 32 extracted from the mold 25.

Such a continuous casting machine 2] has a roll 22 and an endless band 24.
are synchronously driven in the direction of arrow C. The molten metal in the tundish 29 is continuously injected into the opening 25a at one end of the mold 25 through the nozzle 30. The injected molten metal moves within the mold 25 according to the movement of the endless band 24 and the rolls 22, and is gradually cooled to become a slab 32. This slab 32 is extracted to the outside from the other end opening 25b of the mold 25, and its corrugated surface shape is corrected by the rolling rolls 31.

In addition, in the case of the above-mentioned deaf person, the upper part of the mold 25 is the roll 2.
2, a corrugated belt is wound around the peripheral surface corresponding to the corrugated surface 22a of this roll 22, thereby forming a corrugated shape on the roll 22, and the corrugated belt is also applied to other rolls. The upper part of the mold 25 can also be extended by wrapping it around.

〔Effect of the invention〕

As explained above, according to the present invention, since one end of the mold is opened upward, it is easy to pour the molten metal into the mold, and the surfaces of the roll and the endless band are Since it has four sides, thermal expansion in the longitudinal direction is absorbed as displacement in the height direction of the full length, which is particularly advantageous in preventing buckling and plastic deformation due to thermal expansion of the endless band. Since the strength in the width direction of the reeds is extremely high, it is possible to obtain wide slabs, and since the slabs obtained are corrugated, excessive deformation loads are applied to the slabs. Therefore, a continuous casting machine with a low machine height can be obtained.

[Brief explanation of the drawing]

3 and 3 show one embodiment of the continuous casting machine of the present invention, and FIG. 1 is a conceptual vertical cross-sectional side view thereof;
Fig. 2 is a cross-sectional front view of the main part showing the structure of the mold, Fig. 3 is a perspective view and m1 side view showing a part of the corrugated belt, and Fig. 4 is a schematic perspective view of a conventional continuous casting machine. . In the drawings, 21... Continuous casting machine 22... Roll 22a... Cork P-) peripheral surface 23... Cork P-
) Belt 24...Endless band 25...Mold 25
a... One end opening 25b... Other end opening 26... Side link 26a... Corrugated peripheral surface 27...
i-moving roll 28...driven roll 29...tandish roll 31...pressure FBg o-le. Agent Natsuo Shioya (and 2 others) Figure 2 Figure 3 (2) Figure 4

Claims (1)

[Claims] A roll that rotates at a constant speed with its axis horizontal, comprising two side rings at a predetermined interval on its circumferential surface, and a corrugated surface on the circumferential surface between the side rings;
an endless belt made of a corrugated belt that moves synchronously at the same speed and in the same direction as the roll, the endless belt being arranged so as to surround approximately one-fourth of the circumference of the roll; The side rings, the surface of the roll between the side rings, and the corrugated belt have an opening for injecting molten metal in the upper part and an opening for extracting the slab in the lower part in the horizontal direction. A continuous casting machine characterized by forming a mold.