Mold powder for continuous casting and continuous casting method used for Fe—Ni based alloys or Ni-based alloys.

摘要

PROBLEM TO BE SOLVED: To provide a mold powder used for continuous casting of a molten metal of Fe—Ni based alloy or Ni based alloy in order to manufacture a continuous casting slab of Fe—Ni based alloy or Ni based alloy having excellent surface properties, and for main continuous casting. A continuous casting method using a mold powder is provided. SOLUTION: The mold powder for continuous casting of Fe—Ni based alloy or Ni based alloy containing 30 wt% or more of Ni is CaO—SiO 2 based powder, CaO: 30 to 40 wt%, SiO 2 : 30 to 40 wt%, Al 2 O 3 : 3 to 10 wt%, Na 2 O: 8 to 15 wt%, F: 5 to 10 wt%, K 2 O: 0.01 to 2.00 wt%, S: 0.01 to 0.50 wt%, It has a component composition of P: 0.01 to 2.00 wt% and C: 1.0 to 3.5 wt%, and satisfies a basicity of 0.75 ≤ CaO / SiO 2 ≤ 1.33, and is 1300 ° C. The viscosity is 1.0 to 4.0 poise and the solidification temperature is 1000 to 1250 ° C. [Selection diagram] Fig. 2