VSD2000 Vibration Based Ladle Slag Detection System in Continuous Casting

VSD2000 continuous casting ladle slag detection system is the main choice of the iron and steel company to detect ladle slag based on vibration so far in China, which identify slag carry-over time point according to the vibration signal of shroud operation arm. The system possesses the tundish liquid level auto-control subsystem to realize the auto-control for ladle pouring progress.
The system got perfect approvals of clients rightly when it was launched. It had been put into practice in many continuous casting lines, such as WISCO, Shougang Group, Shagang, Xingcheng, Huaigang, Xingtai, Taiwan Fengxing etc, which had achieved significant economic benefits.
 
Technical parameters:
-- Slag detection validity: >96%
-- Tundish liquid level control precision:  0.5T
-- System response time: <0.5s
-- Sensor parameters: 
       Weight: <5Kg; 
       Size(depth×width×high): 100mm×170mm×110mm;
       Protection: multilayer steel shell protection and compressed air cool protection;
       Environment temperature:  <150ºC
       Life: >2 years
-- Size of control cabinet(depth×width×high):  600mm×600mm×2000mm
 
System fundamental features:
  Installation is convenience, has no negative influence to continuous casting production, and needn't modification for field equipments.
  Short periodic time for putting into practice, not exceed two weeks from mounting to debugging finished.
  High reliability of sensor, multilayer steel protection design, adapt various complex conditions.
  Tundish liquid level auto-control subsystem assist VSD2000 system in suppressing the entrainment, improving the molten steel yield and stabilizing the continuous billet quality.
  Convenience of system maintenance, modularized design makes the system run reliability.
   System operation is convenience, it shows the current and the last ladle casting time  which convenience operator to control the pouring progress of ladle.
  Multilevel columnar lamp were used to indicate the flowing status of molten steel and slag visually , and it also present the entrainment level.
  The system possesses acousto-optic alarm function. Operator can choose automatic mode or manual mode to close the slide gate when slag detected.
  The system possess the data saving and data playback functions, and the historical data can be saved over one year automatically.
 
Core technology:
Ladle Slag Detection Technology Based on Vibration (National Patent for Invention ,Patent Number: 200510050311.X)
   * By using vector quantization processing method to obtain vibration characteristic parameters of ladle slag , the technology can automatically breed out the switch motion of nozzle slide gale or any other external interferences ,and its slag detection validity can reach as high as 96%;
   * Installation is convenience, and don't need any modification for field equipments and ladle;
   * Short periodic time for putting into practice, do not exceed one week from mounting to debugging finished,  no negative influence on continuous casting production;
   * Reliability is high and operation is simple,can avoid maintain;
Vibration Signal Synergism Device(National Patent for Invention ,Patent Number: 200910100688.X)
Effective isolation from outside interferences and exellent signal-to-noise performance, away from high-temperature region.
Tundish Liquid Level Automatic Control Technology(National Patent for Invention ,Patent Number: 200710067218.9)
Multi-channel vibration signal extraction, improved effectiveness of ladle slag detection, suppression ladle slag entrapment and liquid level control accuracy: 0.5T.
Remote Monitoring Technology (National Patent for Invention ,Patent Number: 200910152594.7)
   * Remote monitoring and fault diagnosis of slag detection system;
   * With remote system debugging and control funtions;
   * Remote system upgrade and maintenance.