The invention discloses a
system and method for preventing steel
ladle top
slag entrapment through an automobile plate, the
system comprises a
slag avoiding device and a
porous flow controller, the
slag avoiding device is made of a hot-rolled steel plate, the slag avoiding device is in a double-inverted-cone shape, the slag avoiding device comprises orifices which are located at the top and formed by inverted-cone-shaped cone bottoms, the double inverted cones correspond to the two orifices, and before an RH dip
pipe is inserted into a steel
ladle, the
porous flow controller is arranged on the steel
ladle. The slag-avoiding device is placed on the slag surface of the steel ladle, and the RH dip
pipe is inserted into an orifice of the slag-avoiding device; the multi-hole flow controller is fixed above the upper
nozzle of the steel ladle, the multi-hole flow controller is provided with a flow channel communicated with the upper
nozzle of the steel ladle, the flow channel forms a top hole in the top of the multi-hole flow controller, and the flow channel respectively forms side holes in a plurality of vertical sides of the multi-hole flow controller. By means of the
system, the situation that ladle slag enters
molten steel is reduced, the number and density of inclusions in a
casting blank are greatly reduced after
casting is finished, the surface quality defects are greatly reduced after a plate blank is rolled, and the serious surface defects existing in a ladle changing transition blank are overcome.