| 摘要 |
PROBLEM TO BE SOLVED: To joint other parts to casting parts at enough strength by constituting one part of a mold of the casting parts with an adhering part, and jointing the parts adhered in casting and the post-heat treatment with the casting parts. SOLUTION: When a turbine blade 1, at the tip of which an abrasion resistant material 2 is adhered, is manufactured in casting, the abrasion resistant material 2 is attached to the tip of the turbine blade 1 made by pressure-inserting a semi-molten brazing material into a female mold. The mold is made by a lost wax method. The turbine blade 1 and the abrasion resistant material 2 of the brazing material are coated with ceramic slurry, and sanding for spraying the sand is applied on the surface. Coating and sanding are alternately performed, so as to obtain a given thickness. At that time, a runner 4 is constituted by pouring a core or the like. After the material before the mold is fully dried, it is debrazed by rapid-heating and fired in a furnace. Molten Ni alloy is cast into the obtained mold 3. When the molten metal is brought into contact with the abrasion resistant material 2, heated and solidified, diffusion jointing occurs between the solidified element and the abrasion resistant material 2.
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