1. Background

VD furnace is a ladle refining furnace, which deoxidizes, desulfurizes and removes hydrogen by blowing argon under vacuum to achieve steel refining The temperature control of molten steel in the refining process is of great significance to improve the level of process control and ensure the quality of molten iron. Traditional temperature measurement methods can only be used to measure temperature by manual thermocouples before and after entering the furnace. The main problems are:

● Repeated sampling with much work load;

● Blowing temperature monitoring cannot be achieved, and temperature measurement has hysteresis;

● The temperature of molten steel is high, the environment harsh, and the personnel risk factor high.

2, plan

Refining furnace molten steel temperature online detection solution is mainly composed of multi-spectral imaging temperature probe, control box, server and display terminal. According to the thickness of the refining furnace cover and the requirements for sealing, fixed imaging temperature probe is used to improve the system sealing This set of solutions is based on the principle of black body radiation, dual-light fusion, and colorimetric temperature measurement technology. The front-end multi-spectral camera collects visible light and near-infrared spectrum signals and outputs video data streams and temperature data streams. The back-end uses dedicated software for display Real-time video and two-dimensional temperature field, the software has ROI temperature analysis, infrared heat map analysis, historical record query and other functions.

3. Value

● Real-time monitoring of the internal operating status of the heating furnace, reducing production safety hazards, and improving the stable operation cycle of the furnace;

● Design products according to the scene, realize multi-position, large area, high-definition monitoring, ensure good viewing and long service life;

● Reduce manual inspection and workload and improve employees' occupational health.

4. Application case