CN-121972617-A - Continuous casting machine dummy bar system, method, equipment and storage medium

CN121972617ACN 121972617 ACN121972617 ACN 121972617ACN-121972617-A

Abstract

The application belongs to the technical field of continuous casting equipment, and discloses a continuous casting machine dummy bar system, a continuous casting machine dummy bar method, continuous casting machine dummy bar equipment and a storage medium, wherein the continuous casting machine dummy bar system comprises a roller way; the device comprises a control module, a sector section, a laser range finder, a timer, a control module and a crystallizer, wherein the control module is used for detecting the head and the tail of a dummy bar and sending signals to the control module, the timer is connected with the control module and is provided with set time, when the head of the dummy bar is detected, the control module sends signals to the control module, the control module starts the timer, when the set time is reached, the control module controls a sector section driving roller to reversely rotate to clamp the head of the dummy bar for transmission, when the tail of the dummy bar is detected, the laser range finder sends signals to the control module, the control module carries out initialization coordinates according to the current position of the dummy bar, and controls transfer of the dummy bar until the head of the dummy bar reaches the range of the set distance from the crystallizer lower opening based on the initialization coordinates. The application realizes that the dummy bar is conveyed to the setting distance range of the lower opening of the crystallizer under the condition that the dummy bar is not stopped.

Inventors

YANG MINGLEI
SHU SHILONG
ZHANG HANG
ZHANG XINMING

Assignees

中冶南方连铸技术工程有限责任公司

Dates

Publication Date: 20260505
Application Date: 20251226

Claims (12)

1. A continuous casting machine dummy bar system, comprising: the roller way is used for driving the dummy bar to move towards the direction of the sector section; A sector section; The laser range finder is connected with the control module and is used for detecting the head part and the tail part of the dummy bar and sending signals to the control module; the timer is connected with the control module and is provided with set time; When the laser range finder detects the dummy bar head, a signal is sent to the control module, the control module starts a timer, when the set time of the timer is reached, the control module controls the sector section driving roller to reversely rotate to clamp the dummy bar head for transmission, when the laser range finder detects the dummy bar tail, the laser range finder sends a signal to the control module, the control module carries out initialization coordinates on the current position of the dummy bar, and controls and transfers the dummy bar based on the initialization coordinates until the dummy bar head reaches the range of the set distance from the crystallizer lower opening.
2. The continuous casting machine dummy bar system according to claim 1, wherein the laser rangefinder is set in a pinch-off position.
3. The continuous casting machine dummy bar system according to claim 1, wherein the set time of the timer is set so that the set time of the timer is reached, according to the distance between the laser rangefinder and the segment and the speed at which the roller table is transferred in the direction of the segment, the dummy bar reaches the segment in a moving state.
4. The continuous casting machine dummy bar system according to claim 1, wherein the roller table stops when the segment driving roller drives the dummy bar to move.
5. The continuous casting machine dummy bar system according to claim 1, wherein the initialization coordinates means setting a current position of the dummy bar as a zero point of a motion trajectory of the dummy bar.
6. The continuous casting machine dummy bar system according to claim 1, wherein the roller table is a conveyor system composed of parallel arrangement of rollers driven by a motor.
7. A continuous casting machine dummy bar system according to claim 3, wherein the sector is located below the crystallizer and is composed of a plurality of segments, each segment comprises a driving roller and a driven roller, and when the set time of the timer is reached, the control module controls the segment driving roller closest to the dummy bar to reversely rotate so as to clamp the head of the dummy bar for conveying.
8. The continuous casting machine dummy bar system according to claim 1, wherein the dummy bar head reaching the lower opening of the mold is automatically stopped within a range of 1 to 1.5m from the lower opening of the mold.
9. The continuous casting machine dummy bar system according to claim 7, wherein the motor of the driving roller is provided with an encoder, and after initializing the coordinates, the control module tracks the motor rotation of the driving roller in real time through the encoder, and calculates the real-time position of the dummy bar, thereby ensuring that the head of the dummy bar automatically stops within a set distance range from the lower opening of the crystallizer.
10. A method for feeding a dummy bar in a continuous casting machine, characterized in that the following steps are performed by using the continuous casting machine dummy bar system according to any one of claims 1 to 9: s1, controlling a roller way to convey a dummy bar from a dummy bar storage position to a sector section direction at a first set speed; Step S2, detecting the head of the dummy bar by the laser range finder, sending a signal to a control module, controlling a timer to start by the control module, enabling the dummy bar to reach the sector section in a moving state after the set time of the timer is reached, controlling a sector section driving roller to clamp the dummy bar to reversely rotate by the control module, and conveying the dummy bar at a second set speed, wherein the second set speed is smaller than the first set speed; Step S3, the laser range finder detects that the tail of the dummy bar passes through the laser range finder, signals are sent to the control module, and the control module initializes coordinates with the current position of the dummy bar; and S4, controlling the sector section driving roller to continuously convey the dummy bar until the head of the dummy bar reaches the set distance range of the lower opening of the crystallizer.
11. A computing device, comprising: A memory and a processor; the memory is configured to store computer-executable instructions that, when executed by the processor, perform the steps of the continuous caster dummy bar method of claim 10.
12. A computer readable storage medium storing computer executable instructions which when executed by a processor perform the steps of the continuous casting machine dummy bar method of claim 10.

Description

Continuous casting machine dummy bar system, method, equipment and storage medium Technical Field The application belongs to the technical field of continuous casting equipment, and particularly relates to a continuous casting machine dummy bar system, a continuous casting machine dummy bar method, continuous casting machine dummy bar equipment and a storage medium. Background The continuous casting machine is a solid steel material which cools and pulls molten steel in a high temperature and liquid state into a fixed shape (such as a slab and a billet). The mold is a copper mold that is filled with cooling water, where the molten steel is poured in one direction and rapidly cooled to form a thin solid billet shell. The dummy bar provides a reliable traction starting point for starting the continuous casting process, and ensures that liquid molten steel can be smoothly pulled into a solid casting blank. The dummy bar is fed into the lower opening of the crystallizer of the continuous casting machine before continuous casting is started, and is used for pulling the billet which is solidified at the beginning, so that the action of the whole continuous production process is started. Before continuous casting starts, the roller way of the continuous casting machine is empty, the dummy bar is stored at the tail part of the equipment, the dummy bar is conveyed forwards from the tail part through the conveying device, passes through the fan-shaped section and is conveyed to the lower opening of the crystallizer at the forefront. The head of the dummy bar is blocked at the lower opening of the crystallizer, and the shape of the upper surface of the head of the dummy bar is completely consistent with the section shape of the billet to be produced. After the dummy bar is in place, the tundish opens the water gap and injects high-temperature molten steel into the crystallizer. The molten steel contacts and solidifies with the head of the dummy bar, and the dummy bar is connected with the initially solidified billet into a whole. The continuous casting machine can pull the dummy bar at a set speed. The dummy bar pulls the billet which is solidified continuously at the back but is still in liquid state at the center to come out from the lower opening of the crystallizer, and the billet is continuously cooled through the secondary cooling section until the billet is solidified completely. The dummy bar is a key procedure in the preparation stage of continuous casting start-up, and the efficiency of the dummy bar directly influences the operation rate and the production rhythm of the continuous casting machine. The traditional dummy ingot feeding process adopts a multi-stage speed reduction and manual intervention mode, and has the following problems: (1) The efficiency is low, the initial speed is low (such as 9 m/min), the speed is reduced and stopped for a plurality of times in the process, and the total use time is about 860s by taking a slab with 14 sector sections of 8m arc as an example; (2) The automation degree is low, the coordinate initialization depends on manual operation, and the waiting time of the equipment is prolonged; (3) The flow is incoherent, namely the transmission flow is interrupted by people, and one-key type automation cannot be realized; (4) The light passing hole is too small, and signals are easy to lose when the dummy bar is conveyed at a high speed. Therefore, there is a strong need in the art for an efficient, automated dummy bar solution to improve the overall efficiency of a continuous casting machine. Disclosure of Invention According to the application, the head and the tail of the dummy bar are used as detection objects of the laser range finder, and the timer is adopted to assist in controlling the reverse rotation of the sector-shaped section driving roller, so that the dummy bar can be ensured to continuously run within a set distance range from the lower opening of the crystallization period under the condition of no stop, and the working efficiency is improved. According to a first aspect of the present application, there is provided a continuous casting machine dummy bar system comprising: the roller way is used for driving the dummy bar to move towards the direction of the sector section; A sector section; The laser range finder is connected with the control module and is used for detecting the head part and the tail part of the dummy bar and sending signals to the control module; the timer is connected with the control module and is provided with set time; When the laser range finder detects the dummy bar head, a signal is sent to the control module, the control module starts a timer, when the set time of the timer is reached, the control module controls the sector section driving roller to reversely rotate to clamp the dummy bar head for transmission, when the laser range finder detects the dummy bar tail, the laser range finder sends a signal to the control module, the cont