The frequency of vortex increases with the augment of the casting speed, and decreases with the augment of the immersion depth and nozzle angle.
漩涡的出现频率随拉速的增加而增加，随水口浸入深度的增加而减小，随水口张角的减小而增大；
2
The results show that the submerged nozzle ingate angle and depth of its immersion should decrease gradually with the lowering of casting speed.
结果表明，随着拉速的降低，水口的上倾角大小和浸入深度应逐渐减小。
3
The utility model belongs to the field of metallurgy continuous casting, in particular to a special type immersion gate in a crystallizer for sheet bar continuous casting.