A method for controlling the steel casting operation in a slab crystallizer

Abstract

This invention belongs to the field of steel production technology. It relates to a method for controlling the casting operation of a slab crystallizer. A manual control box is added to the liquid level control system, along with an enable switch for switching between the cantilever box and the manual control box. The casting operator at the flowside is responsible for manually controlling the flow while simultaneously controlling the casting machine's speed start / stop, speed adjustment, and manual casting operations via the manual control box. This invention optimizes the crystallizer casting control by adding the manual control box, achieving optimized division of labor in slab crystallizer casting operations. Only one operator at the flowside is required to simultaneously perform: speed start / stop, speed adjustment, manual / automatic switching of liquid level control, and manual casting operations, thus optimizing human resources, improving operational convenience, and reducing the risk of accidents.

Description

Technical Field

[0001] This invention belongs to the field of steel production technology and relates to a method for controlling the steel casting operation of a slab crystallizer. Background Technology

[0002] The casting operation in the slab crystallizer requires the cooperation of personnel working alongside the flow-side casting operator and the cantilever box operator. The flow-side operator is responsible for manual flow control, while the cantilever box operator is responsible for starting and stopping the casting machine, adjusting the casting speed, and switching between manual and automatic control of the liquid level. Because the casting flow control system is integrated into the cantilever box, the flow-side casting operator cannot independently take measures such as flow control, stopping the machine, or reducing the speed when abnormalities occur in the crystallizer casting process. This can lead to delayed responses and production accidents. Furthermore, this division of labor under these equipment conditions fails to integrate on-site operations, increasing labor costs. Summary of the Invention

[0003] In view of this, the purpose of this invention is to solve the above problems and to propose a method for controlling the steel casting operation of a slab crystallizer.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A method for controlling the casting operation of a slab crystallizer includes adding a manual control box to the liquid level control system, and adding an enable switch for switching between the cantilever box and the manual control box; the casting personnel are responsible for manually controlling the flow while controlling the casting machine's starting and stopping speed, speed increase and decrease, and manual casting operations through the manual control box.

[0006] Furthermore, the enable switch is located on the manual control box. When the liquid level control system requires manual control, the enable switch is selected to the "manual control box" side, and the manual / automatic control of the liquid level is switched at the manual control box. When the automatic liquid level system requires cantilever box control, the enable switch is selected to the "cantilever box" side, and the manual / automatic control of the liquid level is switched at the cantilever box.

[0007] Furthermore, the upper billet start button of the cantilever box is a normally open trigger type, and the billet start button on the manual control box is directly connected in parallel with the upper billet start button of the cantilever box; the upper billet stop button of the cantilever box is a normally closed trigger type, and the billet stop button on the manual control box is directly connected in series with the upper billet stop button of the cantilever box.

[0008] Furthermore, the upper billet lifting speed button of the cantilever box is divided into four normally open buttons: fast lifting, fast lowering, slow lifting, and slow lowering. The upper billet lifting speed button of the manual control box corresponds to the upper billet lifting speed button of the cantilever box, and they are connected in parallel in a one-to-one correspondence.

[0009] The beneficial effects of this invention are as follows:

[0010] This invention optimizes the crystallizer casting control by adding a manual control box, thereby optimizing the division of labor in the slab crystallizer casting operation. Only one person is needed to simultaneously perform: starting and stopping the casting speed, raising and lowering the casting speed, switching between manual and automatic control of the liquid level, and manual casting operations. This optimizes human resources, improves operational convenience, and reduces the risk of accidents.

[0011] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0012] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a schematic diagram of the hand-operated box in this invention. Detailed Implementation

[0014] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0015] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0016] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0017] A method for controlling the casting operation of a slab crystallizer includes adding a manual control box to the liquid level control system, and adding an enable switch for switching between the cantilever box and the manual control box; the casting personnel are responsible for manually controlling the flow while controlling the casting machine's starting and stopping speed, speed increase and decrease, and manual casting operations through the manual control box.

[0018] The enable switch is located on the manual control box, which also has indicator lights to show the status. When the liquid level control system requires manual control, the enable switch is set to the "manual control box" side, allowing for manual / automatic control of the liquid level at the manual control box. When the automatic liquid level system requires control from the cantilever box, the enable switch is set to the "cantilever box" side, allowing for manual / automatic control of the liquid level at the cantilever box.

[0019] The upper billet start button of the cantilever box is a normally open trigger type, and the billet start button on the manual control box is directly connected in parallel with the upper billet start button of the cantilever box; the upper billet stop button of the cantilever box is a normally closed trigger type, and the billet stop button on the manual control box is directly connected in series with the upper billet stop button of the cantilever box.

[0020] The upper loading and lowering speed buttons of the cantilever box are divided into four normally open buttons: fast lifting, fast lowering, slow lifting, and slow lowering. The upper loading and lowering speed buttons of the manual control box correspond to the upper loading and lowering speed buttons of the cantilever box, and they are connected in parallel one by one.

[0021] In terms of programming, a manual / automatic control program for the manual control box is designed in parallel, and the "enable selection" is integrated into the manual / automatic control program. Regarding PLC points, three I points are added, namely:

[0022] I0.5 Automatic (manual control box) I1.3 Manual (hand-operated box) I1.2 Enable selection (manual control box / cantilever box)

[0023] Only one person is needed to simultaneously perform: starting and stopping the pumping speed, raising and lowering the pumping speed, switching between manual and automatic control of the liquid level, and manual pouring operations.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for controlling the steel casting operation in a slab crystallizer, characterized in that: A manual control box is added to the liquid level control system, along with an enable switch for switching between the cantilever box and the manual control box; the pouring personnel are responsible for manually controlling the flow while simultaneously controlling the casting machine's starting and stopping speed, speed increase and decrease, and manual pouring operations through the manual control box. The enable switch is located on the manual control box. When the liquid level control system requires manual control, the enable switch is selected to the "manual control box" side, realizing the switch between manual and automatic control of the liquid level at the manual control box. When the liquid level control system requires cantilever box control, the enable switch is selected to the "cantilever box" side, realizing the switch between manual and automatic control of the liquid level at the cantilever box. The billet start button on the cantilever box is a normally open trigger type, and the billet start button on the manual control box is directly connected in parallel with the billet start button on the cantilever box. The billet stop button on the cantilever box is a normally closed trigger type, and the billet stop button on the manual control box is directly connected in series with the billet stop button on the cantilever box.

2. The slab crystallizer steel casting operation control method according to claim 1, characterized in that: The ball-throwing speed control buttons on the cantilever box are divided into four normally open buttons: fast lift, fast lower, slow lift, and slow lower. The ball-throwing speed control buttons on the manual control box correspond to those on the cantilever box and are connected in parallel.

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