JPS63286250A - Twin belt type continuous casting apparatus - Google Patents

Abstract

PURPOSE:To enable shifting of casting unit and to improve the productivity by arranging plural casting units assembling one pair of belts and short side molds forming a pouring basin part on a running carrier or a turn table. CONSTITUTION:Two sets of casting units A, B are loaded on the running carrier 11. The running carrier 11 is carried on main rails 12 toward X-Y direction and exchange of the casting units A, B is executed. Four sets of the casting units A-D may be able to arrange on the turn table 21. By such a constitution, the exchange of the casting units can be efficiently executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a twin-belt continuous casting apparatus that is capable of producing metal ribbons with a plurality of thicknesses and widths by switching casting units. .

[Conventional technology]

BACKGROUND ART Recently, continuous casting methods have been attracting attention, in which a metal ribbon having a thickness of several millimeters to several tens of millimeters, which is close to the final shape, is directly manufactured from molten metal such as molten steel. When using this method,
Since the conventional multi-step rolling process can be omitted, the process and equipment can be simplified. Also,
Since the process of heating the material to the processing temperature between each process is essentially unnecessary, an energy saving effect can also be expected.

One type of continuous casting is the twin belt method. FIG. 3 is a diagram schematically showing a twin belt continuous casting machine. In this continuous casting machine, molten metal in a kundish 1 is supplied from a nozzle 2 to a casting space. This casting space is formed by partitioning both sides of the opposing gap between a pair of belts 4 made of a heat-resistant material such as steel that run over a pulley 3 with short side molds (not shown). ing. The molten metal poured into this casting space is
The metal is cooled and solidified, and then transported out as a thin metal ribbon 7.

Various proposals have been made in the past for producing metal ribbons of various thicknesses, widths, etc. using twin belt continuous casting machines having such a structure. For example, in Japanese Patent Application No. 59-218618 (Japanese Unexamined Patent Publication No. 61-99541), it is possible to change the length of the casting space in the belt width direction by making the short mold placed between the belts movable. I'm trying to make it possible.

[Problem that the invention seeks to solve]

However, in the conventional method of changing the size and shape of the casting space, it takes time to change the size and shape.
Since various instruments are placed near the casting space, the workability is also poor.

Further, since the belt in contact with molten metal is easily worn out, it is necessary to replace the belt when the wear state exceeds a predetermined value. Furthermore, the short-side mold that forms the casting space together with the belt is also susceptible to wear and tear. Therefore, these belts and short-side molds must be replaced frequently, but this is also done in a narrow working space where various tools are arranged, resulting in low workability.

For this reason, at present, the casting operation is stopped and the continuous casting machine is removed from the casting line while inspections, parts replacement, etc. of the equipment are carried out. However, this results in a decrease in productivity.

Therefore, the present invention efficiently, easily and quickly changes the arrangement of belts and short-side molds according to the target plate thickness and width, and replaces aging belts and short-side molds. The purpose of the present invention is to provide a twin-belt continuous casting device that can perform continuous casting.

[Means for solving problems]

In order to achieve the object, the twin belt type continuous casting apparatus of the present invention has a plurality of casting units each incorporating a pair of belts forming a pool and a short side mold in a movable manner on a traveling carriage or a turntable. The casting units are arranged so that these casting units are movable between an operating position and a standby position.

〔Example〕

Hereinafter, the features of the present invention will be specifically explained using examples with reference to the drawings.

FIG. 1 is a diagram illustrating a first embodiment in which a plurality of casting units are mounted on a traveling truck.

In this example, two casting units A and B are mounted on a traveling truck 11. In the example in Figure 1, the casting unit)
A is in the operating position. At this operating position, as shown in FIG. 3, pinch rolls and the like for carrying out the dish and the manufactured thin metal strip 7 are arranged, but these are omitted in FIG. Then, using the casting unit A, molten metal is injected from a tundish into a casting space defined by a belt 4 and a short-side mold 5 to continuously cast a metal ribbon 7.

The traveling truck 11 runs along the main rail 12 in the XX direction, and switches between the casting units 'A' and B. Also,
A sub-rail 13 is laid on this traveling bogie ll in the Y-Y direction. On the other hand, this subrail 1 is installed on the work floor.
3) connected to the casting unit in the operating or repair position
, B are arranged, respectively.

That is, the casting unit) A is operated by moving the traveling trolley 11 in the X-X direction to align the sub-rail 13 with the connecting rail 14, and then moving it in the Y-Y direction along the sub-rail 13 and the connecting rail 14. being carried into position. On the other hand, the casting unit) B is in a standby position, and is transported to the side via the sub-rail 13 and the communication rail 15 as necessary to perform work such as re-stretching or repairing the belt 4.

By making the arrangement of the belt 4 and the short side molds 5 provided in these two casting units A and H different from each other, the plates of the metal ribbon 7 manufactured in the individual casting units A and B are Thickness, plate width, etc. can be changed. Or casting unit A.

It is also possible to arrange the belt 4 and the short side mold 5 for manufacturing the metal ribbon 7 having the same size in both casting units B, and use one casting unit B for emergency purposes.

The casting units A and B can be changed very easily and quickly because the casting unit A or B can be changed by bringing either of the casting units A or B to the operating position by operating the cart. Therefore, even during casting work, the supply of molten steel can be stopped using a stopper nozzle, sliding nozzle, electromagnetic force, etc., and after the metal ribbon 7 has passed through the mold, casting units A and B can be quickly replaced, and a simple method can be used. By using a suitable dummy par and restarting casting, it is possible to change the width and use it as an emergency measure. Therefore, productivity can be significantly improved.

In addition, work on the casting unit in the standby position is also possible.
It is easy because it is carried out in a space where tanditshu, nozzles, etc. are not installed.

Moreover, since the casting unit (B) is idle in this standby position, it is sufficient to change the arrangement of the belt 4 and short-side mold 5 according to the thickness and width of the thin metal strip 7 to be manufactured. This will be done with plenty of time to spare.

FIG. 2 is a diagram illustrating a second embodiment in which a plurality of casting units are arranged on a turntable.

In this example, there are four casting units) A and B.

C and D are mounted on the turntable 21.

Of these, the casting unit A is in the operating position and is manufacturing the metal ribbon 7. Other casting unit B.

C and D are each in a standby position, and the belt 4 and the short-side mold 5 are re-strung, etc., as necessary. and,
Which casting unit A, B, C, or D is to be used can be determined simply by rotating the turntable 21 and transporting a predetermined casting unit to the operating position.

In addition, whether or not the predetermined casting units A, B, C, and D have been transported to the operating position can be determined by installing a contact such as a limit switch on the turntable 21 and checking the appropriate position outside the turntable 21 near the operating position. It can be detected by placing sensors. As this position detection mechanism, various types of widely known types can be used. It is convenient to stop the rotation of the turntable 21 based on this detection result.

When the casting spaces of these casting units) A, B, C, and D are made to have different sizes, the metal produced can be achieved by simply transporting the casting units) A, B, C, and D to the operating position. The thickness, width, etc. of the ribbon 7 can be easily changed. Moreover, some of these casting units A, B, c, and D can also be used for emergency purposes.

In this example, since the casting units A, B, C, and D are arranged circumferentially on the turntable 21, the area occupied by the switching stand is small even though a large number of units are arranged. becomes.

〔Effect of the invention〕

As explained above, in the twin belt type continuous casting apparatus of the present invention, a plurality of casting units are mounted on a traveling truck or a turntable, and these casting units are used for continuous casting of metal ribbon while switching between them. There is. This greatly reduces the time required for equipment adjustments and repairs when manufacturing thin metal strips with different thicknesses or widths, or when replacing worn belts or short-side molds. . In addition, the switching work can be easily performed by operating a cart or turntable, and the supply of molten steel is temporarily stopped using a stopper nozzle, sliding nozzle, electromagnetic force, etc., making it possible to perform the switching work even during casting. In this way, according to the present invention, it becomes possible to efficiently manufacture various metal ribbons.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the first embodiment of the present invention, and the second embodiment is a diagram explaining the first embodiment of the present invention.
The figure is also a diagram explaining the second embodiment. Also, the third
The figure schematically shows a conventional twin-belt continuous casting machine. Patent applicant: Nippon Steel Corporation Representative: Masu Kobori (and 2 others) Figure 1 14.15: Communication rail Figure 2

Claims (1)

[Claims] 1. A plurality of casting units in which a pair of belts forming a pool and a short-side mold are installed in a movable manner are placed on a running cart or a turntable, and these casting units are moved between an operating position and a standby position. Twin-belt continuous casting equipment.