BACK-UP STUCCO MATERIAL FOR MANUFACTURING MOLD FOR PRECISION CASTING, MANUFACTURING METHOD THEREOF, AND MOLD FOR PRECISION CASTING OBTAINED BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a back-up stucco material for manufacturing a mold for precision casting which can be repeatedly recycled, to provide a manufacturing method thereof, and to provide a mold for precision casting obtained by using the same.;SOLUTION: The back-up stucco material for manufacturing the mold for precision casting is constituted of non-spherical monolithic refractory particles having rounded corner parts, having the Al₂O₃-SiO₂ based or Al₂O₃ based refractory composition containing at least Al₂O₃ as a major component, and consisting of mullite or corundum or compound ore thereof while the apparent porosity is 5%.;COPYRIGHT: (C)2010,JPO&INPIT