Research on Thermocouple Embedded Position for CC mould Copper Plate with Different Cooing Water Temperature

Cooling water temperature is one of the key parameters for continuous casting, and it has great influence to the thermal state of the mould copper plate. The coupled visco-elasto-plastic FEM models have been presented for thermal process analysis of steel the mould copper plates. With the understanding to the mould thermal state for different heat transfer coefficient, the characters of mould copper plate thermal state is obtained. It is shown that, when the cooling water temperature increasing, the surface temperature of the mould plate would be higher, but the temperature distribution trend is steady, and at same time, the cooling water temperature has little influence to the equivalent strain distribution, especially for the nodes nearer to the meniscus. Lower cooling water temperature would cause bigger mould copper plate equivalent strain, and induce more surface crack of the strand. For breakout signal catching of this mould, the thermocouple is better to embedded lower than 350mm to the meniscus by vertical, and less than 30mm to the mould cold side by level.