In order to meet the needs of producing various specifications of continuously cast products, shorten the time for replacing the mold, and improve the production capacity and production efficiency of the continuous casting machine, the mold online width adjustment system is the key technology for efficient continuous casting. The online mold width adjustment system enables the two narrow sides of the continuous casting slab mold to move inward or outward in small steps until the predetermined width is reached. During the production process, the adjustment of the mold’s width can be completed without stopping the machine. Generally, the online width adjustment of the mold needs to be connected with the online taper measurement of the mold. Only with adjustment and detection can the online adjustment range of the mold be accurately controlled.
Fig 1 Mold online width adjustment system
The components of the system
Workstation: host system, system width adjustment control, taper detection.
On-site operation box: real-time display of the current control status, manual operation to adjust parameters.
Digital Electric Cylinder: Precise digital control of electro-hydraulic drive cylinder, which can achieve high-precision quantitative control.
On-line measurement of taper: Install it on the narrow-face copper plate of the mold, and monitor the taper of the narrow-face copper plate in real time. Cooperate with the detection feedback control of the width adjustment system, so as to achieve high-precision adjustment.
FIG 2 System block diagram
The technical parameters
Adjustable range: 0-1250mm (unilateral)
Control accuracy: 0.02mm/0.05mm/0.1mm
Step resolution: 0.01mm/0.02mm
Running speed: 0-10mm/s
16-bit encoder: 65536 pulses
Shell: high-strength aluminum alloy
FIG 3 Syetem software interface
The functions of the system
Realize online width adjustment function
Realize the online real-time monitoring function of mold taper
Continuous casting production adjustment and non-stop production
One-key operation in the main control room, automatic completion
High adjustment accuracy and fast speed
The interlock control of the continuous casting steelmaking system can realize automatic steel pouring