Continuous casting roughing slag inspection method and device based on vibration monitoring

Abstract

This invention relates to continuous casting dross detection method and device based on vibration detection. On section if the end of motion arm far away the long nozzle, assemble multiple vibration sensors with different directions to collect vibration signals of different directions; form sampled signal after amplifying, filtering, sampling and A / D transform; take off-line process for the ,mass collected signals to form norm eigen vector; use effective vector quantization algorithm to train codebook corresponding to all states used as codebook KB of all casting states when recognizing on line; by wavelet analysis method, obtain eigen vector of sampled signals; through the search and calculation for code word, decide which codebook that current state belongs to and give dross information. The advantage of this invention is that it needs just to set multiple vibration sensors on motion arm and treat the signal real time, and needs no other auxiliary device.

Description

technical field [0001] The invention relates to the field of metallurgical industry, and mainly relates to a continuous casting slag detection method and device based on vibration monitoring for molten steel continuous casting equipment. Background technique [0002] With the intensification of market competition, major steel companies have focused their attention on the research and development of high-end products. For the production of high-quality steel, ladle slag detection is a very critical link. In order to solve the problem of ladle slag prediction, many foreign companies have researched and developed a variety of ladle slag detection technologies. [0003] The steel slag detection system based on infrared technology can ensure accurate and reliable steel slag detection from the tapping process. At present, only this type of system is often used in the slag detection of the converter taphole, and it cannot be applied to the slag detection from the ladle to the tund...

AI Technical Summary

Problems solved by technology

[0008] 1. During the pouring process of molten steel, sometimes the molten steel does not necessarily come into contact with the shroud wall but directly enters the tundish, resulting in very small vibration of the mechanical operating arm, making it difficult to manually distinguish the slag discharge time

[0009] 2. At the end of a ladle of molten steel pouring, sometimes the molten steel swirls down, and the steel slag will also be involved at this time, and the steel flow with steel slag rotates and continuously impacts on the shroud wall, resulting in mechanical The vibration of the manipulator arm does not necessarily decrease, and it is impossible to distinguish the slag manually

Therefore, such a vibration signal processing method has great limitations, and it is difficult to meet the actual needs.

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