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Background

Infrared thermal imaging monitors the surface temperature distribution and solidification state of the continuous casting billet, warns of defects such as cracks, shrinkage holes, and abnormal cooling in the secondary cooling zone, and provides real-time data support for continuous casting process optimization and billet quality control.

Solution introduction

HIRDA-LZ continuous casting billet IR thermal imaging camera intelligent monitoring system is an infrared thermal imaging product specially used for continuous casting billet temperature monitoring. The system is mainly composed of infrared cam movement, infrared lens, air-cooled metal protective cover, thermal imager control cabinet, image algorithm server and client software. The system adopts full-amplitude radiation temperature measurement technology, which can simultaneously obtain multipoint temperature value; temperature measurement range up to 2500℃; self-developed temperature measurement algorithm with high temperature measurement accuracy; metal shield design, IP66 protection grade; the system software can realize the functions of target infrared heat map display, thermal data collection, storage and analysis, alarm at high and low temperature, positioning and temperature tracking. This product has been widely used in iron and steel metallurgy, non-ferrous metals, electric power, cement, glass and many other industries temperature monitoring.

System characteristics

 Operating temperature range is wide, can work at-20 ℃ ~ + 60 ℃ ambient temperature;

 Infra red camera has high protection level, the highest protection level can reach IP66;

 Full-screen real-time temperature measurement, wide coverage range;

 Without relying on the system platform, it can directly log in to the web page to access the image and configuration, and can directly output the alarm signal to the PLC or the alarm;

 Support the onvif protocol, can access to the mainstream NVR;

 Temperature data can be connected to the LED screen and the PLC;

 Electric / autofocus, at any time through the software to focus operation;

 Temperature measurement range can be customized, the maximum support-20℃ to 2500℃;

 The temperature measurement accuracy is better than ± 2℃ or ± 2%;

 Support the modbus protocol and can dock with the DCS system for temperature data transmission.

Benefits brought

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  Monitor the flaking status of iron oxide scale: The iron oxide scale on the surface of the ingot is reddish brown above 1100℃. If the local temperature is greater than 1250℃, the iron oxide scale will flake off due to overheating (forming black spots). Thermal imaging can quantify the temperature of the flaking area and guide the adjustment of the heating furnace temperature system to avoid “pitting” defects on the surface of the rolled material.

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  Dynamically adjust the pulling speed to match the temperature: According to the solidification endpoint position fed back by thermal imaging (the ideal solidification endpoint is 3-5m away from the crystallizer), the pulling speed can be adjusted in real time. A steel plant increased the pulling speed from 2.0m/min to 2.3m/min, increasing production capacity by 15%, while maintaining stable ingot quality.

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  Thermal imaging can mark defect locations in real time during billet casting (casting speed 0.5-3m/min). A steel plant uses thermal imaging to remove defective billets online, increasing the surface quality pass rate of rolled products to 99.5%. Thermal imaging can mark defect locations in real time during billet casting (casting speed 0.5-3m/min). A steel plant uses thermal imaging to remove defective billets online, increasing the surface quality pass rate of rolled products to 99.5%.