Patent ID: 11945028
Assignee: JFE STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 7:
8. The mold powder for continuous casting of Al-containing hypo-peritectic steel according to claim 7, wherein a viscosity difference (Δη=η1−η0) between a viscosity η1 and a viscosity η0 is 0.15·Pas or less, and a crystallization temperature difference (ΔTCS=TCS1−TCS0) between a crystallization temperature TCS1 and a crystallization temperature TCS0 is 100° C. or less,
where η0 is a viscosity at 1,300° C. in an initial composition of the mold powder, TCS0 is a crystallization temperature in the initial composition, η1 is a viscosity at 1,300° C. in a composition of the mold powder in which SiO2 of the mold powder is reduced from the initial composition by 17.6%, by mass %, and Al2O3 content is increased from the initial composition by 20.0%, by mass %, and TCS1 is a crystallization temperature in the composition.