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Ladle roughing slag detection, control method and system

A detection method and detection system technology, which are applied in general control systems, control/regulation systems, program control, etc., can solve the problems of the influence of vibration detection accuracy, difficulty in meeting actual needs, and the influence of system vibration characteristics. The effect of high accuracy and low maintenance cost

Inactive Publication Date: 2008-08-27
SHAANXI AIBEIER ELECTRIC POWER EQUIP
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AI Technical Summary

Problems solved by technology

However, due to the influence of various environmental vibrations and operating processes around the continuous casting system on the vibration characteristics of the system, the accuracy of vibration detection may be affected to a certain extent, and it is difficult to meet actual needs

Method used

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  • Ladle roughing slag detection, control method and system
  • Ladle roughing slag detection, control method and system
  • Ladle roughing slag detection, control method and system

Examples

Experimental program
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Embodiment

[0052] The vibration sensor of the ladle slag detection system adopts the speed sensor model PCB 640B01, the ICP power supply adopts the SCXI-1530 of NI Company, the detection station adopts the PXI computer composed of NI Company’s PXI-8186 P4 and PXI-1042Q, and the data acquisition selects NI Company PXI-6122 data acquisition card. Based on data communication, the opening of the sliding gate, the flow rate of molten steel, the liquid level of molten steel, and the weight of the ladle are obtained. Among them, the density and viscosity of molten steel can also be directly input to the detection station. The detection system has data communication function to output slag lowering alarm signal and slag inclusion amount signal. The slag lowering station control software is based on LabView8.0 software, which realizes human-computer interaction, including operation and parameter modification; realizes comprehensive processing of data; realizes storage and query of historical data...

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Abstract

The present invention discloses a detection / control method and a system for steel ladle roughing slag. The method comprises contents in two aspects as follows: according to vibration signals, molten steel flow velocity, molten steel liquid level, slide gate opening degree, molten steel density and molten steel viscosity coefficient, the detection of steel ladle roughing slag state in casting process is realized, so as to get the roughing slag state of the steel ladle, as well as roughing slag amount; according to the detected steel ladle roughing slag state, a slide gate is automatically controlled to be closed with the preset roughing slag sensitivity. The method improves the instability and inaccuracy of adopting single vibration signal for detection in the prior art, improves the precision and reliability of roughing slag detection systems, can close the slide gate in time, prevent excessive steel ladle roughing slag and improve molten steel purity through automatic control, and improves molten steel yielding rate on the premise of guaranteeing molten steel quality. The system is low in cost, high in reliability and low in maintenance cost, which is extensively applied to metallurgical industry.

Description

Technical field: [0001] The invention relates to the field of automatic control in the metallurgical industry, in particular to a ladle slag detection and control method and system. Background technique [0002] With the increasingly stringent requirements on steel quality, achieving less or no slag tapping is the prerequisite for improving steel quality and effective secondary refining, and is an important technical measure to reduce the consumption of alloys, aluminum and refractory materials. The implementation of good slag prevention technology in the pouring process is an important guarantee for maintaining the effect of secondary refining to the maximum extent, improving the purity of molten steel, and stabilizing the operation process. [0003] The current ladle slag detection technology includes infrared detection method, electromagnetic detection method, weighing detection method, ultrasonic detection method, vibration detection method and so on. The detection prin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/048B22D41/00
Inventor 徐宝平
Owner SHAANXI AIBEIER ELECTRIC POWER EQUIP
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