| 摘要 |
PROBLEM TO BE SOLVED: To provide a cast product in which an alumina barrier layer is formed even in a welded spot, and a method for manufacturing the same.SOLUTION: A manufacturing method of a cast product used in a high-temperature atmosphere, obtained by welding a first casting body and a second casting body of heat resistant alloy containing, by mass, 15-18% Cr and 2-4% Al, includes steps of: joining the first casting body and the second casting body by welding; applying a surface treatment to the welded spot joined; and applying a heat treatment to the welded spot surface-treated. |
