Precision casting mold, precision casting mold casting method, and rotary machine blade manufacturing method

摘要

PROBLEM TO BE SOLVED: To provide a mold for precision casting capable of lowering strength of a part of the mold; and to provide a casting method of the mold for precision casting, and a manufacturing method of a rotary machine blade.SOLUTION: A mold for precision casting has a plurality of refractory material powder layers extending along a cavity part corresponding to an outer shape of a cast, and laminated mutually, a plurality of stucco layers interposed between the plurality of refractory material powder layers, and an easily collapsible part containing niobia-stabilized zirconia, and having a larger size than the particle size of refractory material particles constituting the plurality of stucco layers.SELECTED DRAWING: Figure 3