Overview
The mold is a device that shapes the cast product in continuous steel casting, and it is also the core equipment and key technology of continuous casting machine. The main function of the mould oscillation deflection detection instrument is to detect the the mould oscillation table’s oscillation frequency, amplitude, deflection rate, phase, oscillation trajectory curve, etc. Through the detection and adjustment of the detection instrument, the mold moves along the outer arc of the continuous casting machine according to the set amplitude, frequency and waveform deflection characteristics.
The actual oscillation parameters of the mold oscillation table during the production process and the process parameters of the cast products cannot be effectively known without the data detection of the mold deflection detection instrument, so that the operator cannot adjust the mould’s production process parameters in real time according to the real-time situation of the on-site production.
The continuous casting mold deflection detection instrument independently developed by our company is suitable for various molds such as slab, square billet, round billet and shaped billet. The system obtains the process parameters such as actual oscillation holographic parameters and negative slip amount of the oscillation table by effectively detecting the movement of the mold. The technicians can formulate the control strategy of the mould according to these actual parameters, and improve the output and quality of the product within a safe and reliable range.
The structure of the instrument
Continuous casting mold oscillation and deflection detection instrument is mainly composed of sensor system, sensor signal conditioning circuit, power supply circuit, synchronous data acquisition module, communication cable, and software data analysis system.
There are three axial acceleration sensors installed in the mold oscillation and deflection detection instrument, one of which is to detect the vertical oscillation signal (Y axis), and the other two are to detect the horizontal oscillation signal (X and Z axis). The signal obtained by the sensor is processed by the preprocessor and the preprocessing module. The oscillation signal and sensor status signal will be filtered and normalized, sent to the synchronous data collector for digitization and feature extraction, and the data is analyzed and processed by the master computer software to obtain various oscillation parameters and process parameters required by users.
The functions of the system
1. Adopting mould oscillation X/Y/Z three-dimensional data acquisition, using high-precision sensor system and high-sensitivity axial accelerometer, comprehensive detection of equipment oscillation state, including:
1) Detect the oscillation frequency of the mold oscillation table
2) Detect the amplitude of the mold oscillation table
3) Detect the deflection rate of oscillation
4) Detect the lateral deflection, longitudinal deflection, phase, and phase difference of the mold oscillation table
5) Three-dimensional display of the oscillation trajectory, and the oscillation table trajectory can be viewed from 6 sides of the oscillation table (X-Y, X-Z, Z-Y)
2. The software system adopts the design of man-machine interactive graphic interface, which can display the mold oscillation state in real time. The software functions include:
1) Real-time data curve display: oscillation waveform, oscillation frequency, signal superposition analysis
2) Single-axis curve display, multi-axis curve display, amplitude, acceleration, three-dimensional graph
3) View historical curve
4) Generate test report
5) Give a warning prompt
6) Spectrum analysis function
7) Long-term storage of data
3. Portable measurement method, which can provide handheld detection equipment with wireless remote transmission, and the operation is simple.
4. Provide an overview of inspection parameters under the full screen, displaying all data including oscillation parameters and process parameters. At the same time, the calculation and display of the oscillation spectrum is completed in real time, which is used to evaluate the frame loss of the waveform , and to determine whether there is a problem with the installation of the oscillation device.
5. Alarm management. Record each alarm data under real-time alarm conditions to analyze the cause of the alarm and evaluate the impact of the alarm on production.
6. Parameter setting. Users can set the ideal oscillation value and normal working range of various steels online. We also can set the alarm limit, and the storage time of the database etc.
7. After charging the device once, it can work continuously for more than four hours.
8. Integrate embedded processing equipment to realize data collection, display, analysis, reporting and other functions.
9. According to the mold characteristics and user requirements, it can be flexibly configured, wich is suitable for all types of molds such as square billets, slabs, round billets and other mold oscillation tables.
10. Support wired and wireless data transmission functions, easy to use.
11. Use the laptop to receive the collected data, can be used for the operation test on site, and can analyze and process the data conveniently.
The features of the system
1. The actual oscillation state replaces the ideal oscillation state. The actual oscillation state of the table is used to formulate a control strategy, so that the oscillation table can be used to produce products with more accurate oscillation.
2. Convenient detection method. The equipment can be used for on-site inspection at any time, and the production site can grasp the operating status of the on-site equipment in time, so that we can make production adjustments to the equipment at any time.
3. Efficient working methods and processing platforms. The high-integration equipment developed by embedded technology can work in high temperature and harsh environment. This system can comprehensively detect XYZ three-axis data, and realize real-time data analysis and processing with high-speed data operation and processing platform.
4. Powerful database function. The database adopts the mode of computer automatic management and operator's manual assistance management, and there are tables for recording historical data and alarm data and working parameter setting table of monitoring system inside the database. By adjusting the output range, the best output effect can be obtained.