Filler material for slurry for precision casting mold production, slurry obtained using the same, and precision casting mold

摘要

PROBLEM TO BE SOLVED: To provide a filler material of slurry for manufacturing a precision casting mold which can effectively reduce a used amount of zircon particle or zircon fine powder and can be advantageously used for manufacture of the precision casting mold capable of easily performing collapse and removal of the casting mold after the casting, further to provide the slurry for manufacturing the precision casting mold and to provide the precision casting mold obtained by using the slurry.SOLUTION: Filler material of slurry for manufacturing a precision casting mold is constituted with fire-resistant fine powder which has a total chemical composition consisting of AlOof 35 to 90 wt.%, SiOof 5 to 35 wt.%, ZrOof 5 to 40 wt.% and the other oxides of 0 to 5 wt.%, includes mullite crystal and/or corundum crystal together with zircon crystal as main crystal minerals and has a particle diameter of 1 to 200 μm.