To avoid air suction in the nozzle joint gap and simplify the operating procedure for contionuous casting a protection method in which the joint gap is air tight with sealant is put forward.

• 为了避免水口接缝吸入空气和简化保护浇注现场操作,提出了利用密封料密封水口接缝的保护方法,实验结果表明,保护效果显著。