| abstract |
A continuous casting nozzle which inserts a refractory sleeve containing 20 mass% or more of CaO into the nozzle body to reduce adhesion of alumina, wherein the sleeve does not fall off due to expansion of the refractory sleeve or adversely affect the nozzle body; It provides a bonded structure of the nozzle body. Applying the adhesive material mixed with a refractory aggregate and a binder to the joint formed between the outer circumferential surface of the refractory sleeve or the main body perforated wall mounting the refractory sleeve, or between the inserted refractory sleeve and the nozzle main body perforated wall, By adjusting the porosity of the adhesive to 15-90%, it has a function of alleviating the thermal stress caused by the rapid expansion caused by the inflow of molten steel into the inner cavity during use. |