JPH01130855A - Caterpillar type continuous casting machine - Google Patents

Abstract

PURPOSE:To improve the product quality and the safety by arranging guide wheels supported with elastic body at upper part carrier and supporting the carrier near mold space side with this elastic body. CONSTITUTION:Plural block molds 2 are fixed to the carrier 1 with bolts, etc., and also plural hollow parts 17 are arranged to the reverse block mold side of the upper part carrier 1. Cylinders 18 are inserted as liftable into the horrow parts 17 and the guide wheels 20 rotating along the rails 19 are fitted to the reverse block mold side of the cylinder 15. Further, springs 21 are inserted into the hollow part 17 and the space part of the cylinder 15. At the time of casting, even if dam block 8 and the block mold 2 are deformed with heat, shifting of the mold 2, which is not brought into contact with the block 8, is restrained to the max. gap G, too. By this method, the gap between the block molds 2 side by side is not developed. Therefore, the breakout caused by leakage of molten metal is prevented, and the product quality and the safety are improved.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is a continuous track type continuous block mold that prevents gaps from forming between adjacent block molds in the width direction even when the block mold is divided into a plurality of pieces in the width direction. This relates to casting machines.

[Prior Art] An example of a conventional endless track type continuous casting machine will be explained with reference to FIGS. 2 and 3. A block mold 2 attached to a carrier 1 is connected via a carrier l to form an endless track mold 3.
The mold 3 is movably attached to endless tracks 5 provided on the upper and lower frames 4 via wheels 6, and a mold space 7 is formed between the upper and lower molds 3.3. Further, on both sides of the mold space 7, side dams 9 formed in an endless track shape by connecting dam blocks 8, as shown in Japanese Patent Publication No. 58-23181, are movable while being held between the upper and lower molds 3. It is arranged like this.

In the figure, lσ is tandaitsu, 11 is tandaitsu lO
A tundish nozzle fixed to the front lower part and inserted into the mold space 7, 12 a driving row/l for the mold, 13 an idle roll for the mold, 14 a spring for biasing the block mold 2, and 15 a carrier. A tie rod 16 connects 1 and the block mold 2, and 16 is a slab.

In such a continuous casting machine, the molten metal injected into the tundish IO is supplied from the tundish nozzle 11 to the mold space 7, and is cooled and solidified by the upper and lower block molds 2 moved by the drive roll 12 and the idle roll 13. The cast slab 16 is then taken out of the machine. During casting, even when the block mold 2 and dam block 8 thermally expand, the spring 14 causes the block mold 2 to evenly press the dam block 8 on the left and right sides.
Since it is pushed to the side and in close contact with the dam block 8, the molten metal supplied to the mold space 7 will not leak from between the block mold 2 and the dam block 8.

In addition, when the block mold 2 is narrow, the block mold 2 is integrally formed in the slab width direction as shown in FIG. However, no gap is formed in the block mold 2, and there is no risk of molten metal leaking to the outside from a midway position in the width direction of the block mold 2.

However, if the block mold 2 is wide, the block mold 2 is divided into a plurality of parts as shown in FIG. 4 in order to suppress vertical thermal deformation.

In this case, each divided block mold 2 is provided with a spring for each block mold 2 in order to absorb thermal expansion equally.
4 will be required.

[Problem to be solved by the invention] Therefore, when the block mold 2 is divided in the width direction, when the dam block 8 thermally expands as shown in FIG. The block molds 2 at both ends tilt, creating a gap between the block molds 2 adjacent in the width direction, and the solidified shell growing within the mold space 7 breaks out, causing molten metal to enter the gap and cause a burr. Otherwise, there is a risk that the molten metal may leak to the outside.

In view of the above-mentioned circumstances, the present invention has been developed so that even when a block mold is divided in the width direction, block molds 2 adjacent to each other in the width direction,
This was done to prevent a gap from forming between the two.

[Means for Solving the Problems] The present invention has a block mold divided into a plurality of parts in the width direction of the slab, which is attached to a carrier, and a large number of carriers are connected in the longitudinal direction of the slab. A mold was formed, and the endless track-shaped molds were arranged one above the other so that their opposing surfaces moved in the same direction to form a mold space, and a large number of dam blocks were connected on both sides of the mold space. In a track-type continuous casting machine in which a track-shaped side dam is inserted, a guide wheel supported by an elastic body is installed in the upper carrier, and the carrier on the side of the upper mold near the mold space is supported by the elastic body. It has a configuration.

[Function] Even if the Kodam block thermally expands and the block mold in the upper mold is pushed up, or even if the block mold thermally expands, the divided block molds will each rise by the same amount, so the widthwise direction of the slab will increase. There are no gaps between the block molds, and breakout of the solidified shell is prevented.

[Example] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows one embodiment of the present invention, and the same parts as shown in FIGS. 3 and 4 are given the same reference numerals.

The block mold 2 is mounted on the carrier l in a circular tube with bolts or the like, and a plurality of hollow parts 17 extending vertically are provided on the side opposite to the block mold of the upper carrier 1, and the cylinder 1 is inserted into the hollow part 17.
A guide wheel 2 is fitted into the cylinder 18 so as to be able to move up and down, and can roll along a guide rail 19 on the opposite side of the cylinder 18 from the block mold.
A spring 21 for pressing a guide wheel 20 against a guide rail 19 provided only on the side close to the mold space 7 is housed in the hollow part 17 of the carrier 1 and the inner space of the cylinder 18.

With such a configuration, the dam block 8 is placed in the fifth position during casting.
As shown in the figure, when the block mold 2 at the end that is in contact with the dam block 8 is thermally expanded and pushed toward the anti-mold space side, or when the block mold 2 thermally expands, the block mold 2 via carrier 1 or guide rail 19
Because it is pushed to the side, other block molds 2 in the width direction that are not in contact with the dam block 8 also move by the maximum gap G toward the guide rail 19 together with the carrier L, and therefore the block molds at the end 2 and adjacent block molds 2 in the width direction, or between block molds 2 adjacent in the width direction.
There is no gap between 2. Therefore, it is possible to prevent the solidified shell from breaking out at the widthwise dividing portion of the block mold 2.

It should be noted that the present invention is not limited to the above-described 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] According to the continuous track type casting machine of the present invention, breakout of the solidified shell can be prevented even when the block mold is divided in the width direction of the slab, and therefore burrs can be prevented from forming on the slab. Or,
Alternatively, product quality and safety can be improved without molten metal leaking outside.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an embodiment of the endless track type continuous casting machine of the present invention, Fig. 2 is an explanatory diagram of an example of a conventional endless track type continuous casting machine, and Fig. 3 is an explanatory diagram of an example of the conventional endless track type continuous casting machine. 4 is an explanatory diagram of the block mold part when the block mold is wide, and FIG. 5 is an explanatory diagram of the divided block mold and dam block in FIG. 4 when they are deformed due to thermal expansion. It is. In the figure, 1 is a carrier, 2 is a block mold, 3 is a mold, 5 is an endless track, 7 is a mold space, 8 is a dam block, 9 is a side dam, 17 is a hollow part, 18 is a cylinder, 19 is a guide rail, and 20 is a The guide wheel 21 indicates a spring.

Claims (1)

[Claims] 1) A block mold divided into a plurality of parts in the width direction of the slab is attached to a carrier, and a large number of carriers are connected in the longitudinal direction of the slab to form an endless track-shaped mold with the block mold, and the endless track-shaped mold are placed one above the other so that their opposing surfaces move in the same direction to form a mold space, and track-shaped side dams formed by connecting a number of dam blocks are inserted on both sides of the mold space. An endless track type continuous casting machine, characterized in that a guide wheel supported by an elastic body is attached to the upper carrier, and the carrier on the side of the upper mold close to the mold space is supported by the elastic body.