Cause analysis of abnormal melting loss in slag line of monoblock stopper

 

The monoblock stopper plays a very important role in continuous casting production. Sometimes, the abnormal melting loss and fracture of slag line of the stopper may occur, resulting in abnormal final casting. The research shows that the main reason for the abnormal melting loss of slag line of the monoblock stopper is that the Fe2O3 and MnO in the slag are abnormally high, which react with the C in the monoblock stopper below the steel-making temperature, and the C is gradually consumed, and the slag resistance of the stopper decreases obviously.

On the one hand, the CO2 produced by the decomposition of CaCO3 in the covering agent will react with the C in the plug, resulting in the gradual consumption of C in the plug and accelerated corrosion.?

On the other hand, the water bearing minerals in the covering agent decompose at high temperature to produce water vapor, which will react with the C in the plug rod to form water gas, which also causes the C in the plug rod to be gradually consumed and the erosion is accelerated.

Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc.

Article Source:Cause analysis of abnormal melting loss in slag line of monoblock stopper

Company name ：Luoyang Wanhao New Material Co., Ltd.

More Refractory Products: http://www.wanhaorefractory.com/en/product.html

Website: http://www.wanhaorefractory.com/


 


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