Converter roughing slag detection method based on infrared temperature measurement

Abstract

The present invention relates to a converter roughing slag detection method based on infrared temperature measurement. The method comprises: (1) employing an infrared thermal imager as an image and temperature data collection device, wherein the information output end of the infrared thermal imager is connected with an industrial control computer, the instruction output end of the industrial control computer is connected with the information input port of a converter PLC electric control cabinet; (2) disposing the infrared thermal imager at the position far away from the convertor and connecting the infrared thermal imager with the industrial control computer, performing real-time shooting of the steel tapping and steel stream images in the steel tapping process, obtaining the image data, and obtaining the real-time temperature data of the molten steel; (3) transmitting the obtained image data and real-time temperature data collected by the infrared thermal imager to the industrial control computer, and emitting an instruction through the industrial control computer to the converter PLC electric control cabinet through calculation and analysis; and (4) closing a sliding plate through a converter PLC electric control cabinet hydraulic pressure station, and finishing the slag stopping. The converter roughing slag detection method based on infrared temperature measurement can directly provide the infrared radiation temperature of each point of the surface of the detection molten steel through adoption of the infrared temperature measurement detection method, namely one single quantity is detected, the temperature measurement range is 300-2000 degrees, and the infrared radiation temperature of the molten steel in the steel tapping process can be directly obtained.

Description

Technical field [0001] The invention relates to visual detection technology, and relates to infrared thermal image detection, in particular to a converter slag detection method based on infrared temperature measurement. Background technique [0002] With the needs of social development, the requirements for material quality in all walks of life are increasing, especially the quality of steel in basic industries is also increasing, forcing steelmaking to continue to adopt new technologies and new processes to improve the quality of molten steel. Therefore, the production of high-quality, high-tech, high-value-added high-quality steel products has become an inevitable choice for steel companies, and the quality of molten steel directly affects the performance of steel. Reducing the amount of slag during the converter tapping is an important part of improving the quality of molten steel. It can reduce the rephosphorization and resulfurization of the molten steel, increase the alloy ...

AI Technical Summary

Problems solved by technology

If the filter coating is not uniform, it will cause non-uniform and non-linear correspondence between image gray scale and infrared radiation temperature, which will increase the error link and affect the detection accuracy.

Once the lens aperture changes, the corresponding relationship between the gray scale and the infrared radiation temperature will also change, and the relevant system parameters must be modified according to the working conditions, which requires a large amount of maintenance.

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