Method and apparatus for horizontal continuous casting of magnesium slab or magnesium alloy slab

摘要

A molten Mg or Mg alloy is supplied into a mold (3), which is sheltered from the surroundings, from a pool (2) in a tundish (1), which is shielded from the surroundings. An Mg slab or Mg alloy slab (6) in the mold (3) is drawn out to the outside from an outlet (4) of the mold (3). A cooling medium (18) is jetted onto the slab (6) on an outer side of and in a vicinity of the outlet (4) to cool the slab (6). A sealing gas (19) is sprayed over an entire width of a free surface of the molten Mg or Mg alloy on an inner side of and in the vicinity of the outlet (4), to seal a portion above the entire width of the free surface of the molten Mg or Mg alloy, thereby preventing oxygen from flowing into the mold (3) from the portion and preventing the cooling medium (19) from running back to the mold side. <IMAGE>