The invention belongs to the field of steel
smelting continuous casting, and relates to an experimental method capable of controlling uniform
crystal phase and eliminating needle
crystal. According tothe experimental method, after protective
slag is directly melted at the two ends of thermocouples by means of a
thermocouple double-wire technology, a uniform and consistent environment of the
crystallization temperature of the protective
slag is created by controlling the same temperature of the thermocouples at the two ends and setting the same
hearth temperature so that in the
crystal solidification process of the liquid protective
slag, the uniform crystal phase can be obtained and needle crystal can be eliminated. According to the experimental method, the process of crystallizing the protective slag from high temperature to low temperature in the
continuous casting process in a factory is simulated, and is more like the actual production process, the obtained experimental data is more convincing, compared with the method for obtaining the crystal phase by re-rising the temperature of the glass slag obtained by
quenching the molten protective slag, the experimental method has theadvantages that the experimental
operation time is short, the steps are simple and convenient, the
workload is smaller, and the obtained product has no needle crystal and the like.