JPS6336868B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to continuous thin plate casting equipment that is capable of continuously manufacturing thin plates with good width dimensional accuracy and that also allows the width to be changed.

In conventional twin-roll continuous thin plate casting equipment,
The molds at both ends of the roll body are fixed molds, so
Relative slippage occurs between the mold and the molten metal during casting.
Therefore, the development of the solidified shell at the ends in the width direction of the plate is inhibited, or the solidified shell at the ends in the width direction of the plate is destroyed, resulting in a decrease in the dimensional accuracy of the cast plate in the width direction. Couldn't get a quality product. Furthermore, if the solidified shell were to break, the molten metal would flow out, making the work dangerous. Furthermore, when changing the width of the plate to be cast, the line must be stopped to clean the roll surface, and then the fixed mold is removed and set to the new width, resulting in longer line downtime and reduced production. Efficiency was declining.

In view of such circumstances, the present invention prevents the solidification shells at both ends in the width direction of the plate from being damaged in the molten metal part, which becomes part of the mold after solidification begins, and improves dimensional accuracy in the width direction of the plate. The purpose of this invention is to reduce the risk of work and improve production efficiency by automatically changing the width of the plate.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention, in which horizontal roll axle boxes 2 and 4 are fitted into the window portion of a horizontally installed housing 6 so as to be able to rise and fall freely. Horizontal rolls 1 and 3, which can be driven by a drive device (not shown), are rotatably mounted, and the gap between the horizontal rolls 1 and 3 is adjusted by a screw 5 screwed onto the side of the housing 6. The horizontal rolls 1 and 3 can be shifted in the direction of the roll axis by suitable means (not shown). Hollow holes are provided inside the horizontal rolls 1 and 3, and by introducing a cooling medium into the hollow holes, the horizontal rolls 1 and 3 can be cooled from inside.

Sprockets 7 and 8 are rotatably pivoted in parallel with the horizontal rolls 1 and 3 at predetermined positions on the downstream side of the continuous casting machine main body, and the roll 1, sprocket 7, and roll 3 are
As shown in Figures 1 and 2, the endless track type molds 9 and 10 formed in an endless chain on the sprocket 8 and the sprocket 8 have different phases when viewed from directly above, and are different from the mold 9 when viewed from the side. The mold 10 is arranged parallel to the gap between the horizontal rolls 1 and 3, and the mold space is defined by the space surrounded by the horizontal rolls 1 and 3 and the endless track type molds 9 and 10. Forming and endless track type molds 9, 10
can be rotated in the same direction in synchronization with the circumferential speed of the horizontal rolls 1 and 3, and the endless track molds 9 and 10 are rotated together with the sprockets 7 and 8 in the roll axis direction by appropriate means (not shown). Configure so that it can be moved. 11 in the figure is a pinch roll.

Next, the operation of the present invention will be explained.

By driving the screw 5, the gap between the horizontal rolls 1 and 3 is adjusted according to the thickness of the plate to be cast, and the gap between the pinch rolls 11 is also adjusted according to the thickness of the plate. The molds 9 and 10 are shifted in the roll axis direction to set the width W between the molds 9 and 10 to a predetermined state, and the horizontal rolls 1 and 3 and the pinch roll 11 are driven by a drive device (not shown), and the sprockets 7 and 8 are moved. Rotate the endless track molds 9 and 10, and horizontal rolls 1 and 3.
horizontal rolls 1 and 3.
A cooling medium is sent into the tank and the pouring of molten metal begins.
During casting, the track molds 9, 10 act as side seals.

The molten metal M introduced into the gap of the horizontal rolls 1 and 3 at the start of the molten metal is cooled from the contact surfaces of the horizontal rolls 1 and 3 and the contact surfaces of the endless track molds 9 and 10, and a good solidified shell is generated and grown. Mold 9,
horizontal roll 1, while being guided on the side by 10;
3, is pressed by the pinch rolls 11, and is continuously guided and pulled out as a slab by the pinch rolls 11.

4 to 7 show other embodiments of the present invention. In this embodiment, a fluid pressure cylinder 12 that shifts the roll 1 in the roll axis direction and an endless track type mold 9, 10 are shifted in the roll axis direction. Fluid pressure cylinders 13 and 14 are provided.

For example, when reducing the width between the molds 9 and 10 from the state shown in FIG. 4 to the state shown in FIG. The pressure cylinders 13 and 14 are operated in the direction in which the rods protrude, and the track mold 10 is slid and shifted on the sprocket 8, so that the sides of the track mold 10 are made with a gap that prevents molten metal from leaking. It is brought close to the body end of the roll 1 to the extent that it is held. In this case, the track mold 9 and the roll 3 are not shifted. However, the track type mold 9 and the roll 3 may be shifted and the track type mold 10 and the roll 1 may be fixed, or both may be shifted.

FIG. 8 shows still another embodiment of the present invention. In the previous embodiment, the track type molds 9 and 10 are stretched between the horizontal rolls 1 and 3, but in this embodiment, the track type mold 10 is stretched around the horizontal rolls 1 and 3. 1 and the endless track type mold 9 into the grooves 16 of the roll 3, respectively.
Fluid pressure cylinder 1 for shifting to horizontal rolls 1 and 3
7 and 18 are provided.

With such a configuration, when the hydraulic cylinders 17 and 18 are operated to shift the horizontal rolls 1 and 3, the endless track molds 9 and 10 move into the grooves 15 and 1.
6 and shifted together with the horizontal rolls 1 and 3. Therefore, a hydraulic cylinder for a track type mold shift is not required.

In FIGS. 4 to 8, the same reference numerals as those shown in FIGS. 1 to 2 indicate the same components.

In the embodiments of the present invention, the case where a track type endless chain body is used as the endless track type mold is explained, but it is also possible to use an endless belt-shaped steel belt, and the direction of casting and the thin plate Although the flow direction of the hot water has been explained from top to bottom, i.e., the flow of hot water is vertical, this direction may be applied to either an inclined or horizontal direction, and various other changes may be made without departing from the gist of the present invention. Of course, you can add more.

According to the thin plate continuous casting equipment of the present invention, () safety is significantly improved because leakage of molten metal and breakout of slabs can be prevented by the endless track type mold;

() Since the trackless mold rotates in synchronization with the circumferential speed of the horizontal roll, a solidified shell grows well at both ends in the width direction of the plate when pouring molten metal. Therefore, it is possible to produce a product with good width dimension accuracy without bulging or breakout, with a good rectangular plate end face.

() Width changes can be made automatically and quickly, reducing line stoppage time and improving production efficiency.

In particular, various excellent effects can be achieved.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an embodiment of the thin plate continuous casting equipment of the present invention, Fig. 2 is an explanatory diagram of the thin plate continuous casting equipment of Fig. 1 when the width is reduced, and Fig. 3 is an explanatory diagram of an embodiment of the thin plate continuous casting equipment of the present invention. FIG. 4 is an explanatory diagram of another embodiment of the thin plate continuous casting equipment of the present invention, and FIG. 5 is an explanatory diagram of the continuous thin plate casting equipment of FIG. 4 when the width is reduced. , FIG. 6 is a view taken in the -direction of FIGS. 4 and 5, FIG. 7 is a view taken in the -direction of FIG. 6, and FIG. 8 is a further embodiment of the thin plate continuous casting equipment of the present invention. FIG. In the figure, 1 and 3 are horizontal rolls, 9 and 10 are track type molds, and 12, 13, 14, 17, and 18 are fluid pressure cylinders.

Claims (1)

[Claims] 1 A pair of rolls, at least one of which is freely shiftable in the axial direction, is provided with an endless track mold that surrounds the outer periphery of each roll, and is arranged so that it can rotate in the same direction as the roll rotation direction and in synchronization with the roll circumferential speed. A space surrounded by the roll and the track type mold forms a mold space, and the track type mold is arranged so as to surround at least a roll different from the roll that is freely shiftable in the axial direction. 1. Continuous thin plate casting equipment characterized by being configured to be able to shift in any direction.