| 摘要 |
PROBLEM TO BE SOLVED: To provide a metallic mold for casting excellent in erosion resistance, and its producing method. SOLUTION: The metallic mold for casting is contained by mass% of 0.1-0.6% C, 0.1-2% Mn, 1-7% Cr and 0.1-0.4% Mo and Si content in the range shown in the following (1) formula, Si<=(2.7/[Cr])-0.43...(1) and provided with spinel structural oxide film having 0.2-30μm thickness at least on the surface in contact with molten metal. Wherein, [Cr] in the (1) formula is solid solution Cr content (mass%) in a matrix obtained with the following (2) equation and each of element marks shows the content (mass%) in the respective elements. [Cr]=-0.68C+0.72Cr+0.35C<2> +0.020Cr<2> -0.38C×Cr+0.76...(2) This metallic mold can be produced by applying a heating treatment at 500-600 deg.C.
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