To provide a test procedure of ventilated refractory body capable of implementing it on a scale of laboratory with high reproducibility of conditions of real operation.
The ventilated refractory body 13 is arranged to a part or all of tubular wall of a tubular sample object 10 both vertical ends of which are closed and containing a hollow space 11 inside, the ventilated refractory body 13 is immersed in molten metal bath 30, while controlling temperature of a molten metal bath 30 with high-frequency heating, gas is introduced into the hollow space 11 of the sample object 10, and gas is jetted from a circumference surface of the ventilated refractory body 13 prepared on the tubular wall of the sample object 10 concerned into the molten metal bath 30.
UCHIDA HIRONARI
YOSHIJI ONORI
Takato Tsutsumi
Next Patent: FLUID ASSISTED GAS GAUGE PROXIMITY SENSOR