Testing method of baking temperature of steel ladle

The invention relates to a testing method of baking temperature of a steel ladle, which belongs to the technical field of temperature tests. When firebricks of a working layer of the steel ladle are constructed, thermocouples are embedded into seams of the firebricks in advance; three to five thermocouples are respectively embedded into the bottom, the inner wall and residue lines of the steel ladle according to the height and the inner diameter of the steel ladle; a temperature testing point of the thermocouples is consistent with the inner vertical surface of the firebricks of the working layer; wires of the thermocouples are distributed between the working layer and a permanent layer; the wires are led out of the bottom of the steel ladle or the top of the wall of the steel ladle; and the tail wires of the thermocouples are connected with a temperature display meter. Special fine thermocouples can be customized; the outer diameter of protective sleeves of the thermocouples is 2 to 3 mm; the thermocouples are made of heat-resistant stainless steel by adopting a hot drawing process; insulating materials are filled between the thermocouple wires in the sleeves and the sleeves; the embedded firebricks do not affect the construction of the steel ladle; in the baking process of the steel ladle, the temperature of a fireproof material of the inner wall is measured and displayed in real time; the operation and the baking time of a baker can be accurately controlled; and after baking is finished, the temperature display meter is disconnected from the thermocouples so as to be convenient to be used in next on-line baking.