| 摘要 |
PROBLEM TO BE SOLVED: To provide a strengthening method for strengthening a local part which is a fitting part of a cast iron member to other members. SOLUTION: In a fitting part strengthening method to other members in a cast iron member to reinforce a fitting part to other members through the solid solution of much Ni which is a metallic element for strengthening, a porous body 5 of Ni is installed in a mold 1 in advance, a molten metal of the temperature higher than the melting point of the porous body 5 is poured in the mold 1 to melt the porous body 5, and Ni is solid-solved to a local part of a casting, and a martensitic phase is formed. |
