To provide an immersion nozzle capable of effectively reducing the generation rate of surface defects in the center part of a cast slab, which are caused by MHD countercurrents, and of which the structure is simple and the maintenance is easy, and to provide a continuous casting method using the immersion nozzle.
The immersion nozzle 2 is equipped with dispersion preventing plates 6, which extend in the longitudinal direction of a continuous casting mold 1, on both sides of a nozzle body for pouring molten steel into the continuous casting mold 1, with discharging holes 3 put between the plates 6. When using the immersion nozzle 2 to perform continuous casting of molten steel while applying a static magnetic field produced by electromagnetic brakes 4, MHD countercurrents, which flow toward the discharging holes 3, ascend toward a surface level 5 through a central flow passage formed between the two dispersion preventing plates 6, so that the MHD countercurrents become hard to come into contact with a solidification interface at the center part. Thus, the generation index of surface defects at the center part is remarkably reduced.
MIZOGUCHI TOSHIAKI
MIKI DAISUKE
KANEKO TETSUYA
JP2005021941A | 2005-01-27 | |||
JPH04333353A | 1992-11-20 | |||
JPS6466052A | 1989-03-13 | |||
JPH08300113A | 1996-11-19 | |||
JP2003266155A | 2003-09-24 | |||
JPS63235050A | 1988-09-30 | |||
JPH02284750A | 1990-11-22 | |||
JPH05146851A | 1993-06-15 | |||
JP2005021941A | 2005-01-27 | |||
JPH04333353A | 1992-11-20 | |||
JPS6466052A | 1989-03-13 | |||
JPH08300113A | 1996-11-19 | |||
JP2003266155A | 2003-09-24 | |||
JPS63235050A | 1988-09-30 | |||
JPH02284750A | 1990-11-22 |
Fumio Yamamoto
Yukine Sekine
Kita Shizuo