Understanding the erosion mechanisms that cost steel mills millions annually

Some common situations, causes and preventive measures of steel penetration, seepage and leakage in ladle sliding plates

The tundish is a device used for the transition of molten steel between the molten steel ladle and the mold. The tundish plays a role of "connecting the upper and lower parts" after receiving the molten steel flowing into the continuous casting ladle. Its installation position is shown in the figure

With the large-scale development of continuous casting equipment, the amount of steel passing through the unit in the long spout has gradually increased, from less than 1t/min originally to more than 7t/min at present. The increase in the amount of steel passing through per unit time has caused a sharp erosion of the inner wall. Therefore, the erosion of the inner wall has become the decisive factor for the long service life of the water outlet.

The main function of the molten iron ladle is to transport molten iron to the converter and electric furnace. In the process of transporting molten steel, the lining of the tank is mainly subjected to the following aspects of damage.

With the development of secondary refining, ladle has been developed from the container for holding steel to the important metallurgical equipment for secondary refining, along with the use of refractory materials for ladle conditions have also changed significantly, mainly in the following aspects:

The ladle permeable brick is the most critical functional element in the secondary refining process, as well as a key functional material in the bottom-blown argon process of secondary refining of iron and steel

Refractories for ingots

Ladle permeable bricks play a vital role in the steelmaking process, and their permeability is affected by a number of factors.