Reuse manner of water soluble core, being reuse manner

摘要

PROBLEM TO BE SOLVED: To provide a method, system and program for reusing a water-soluble core by which the concentration of mixing sand (slurry) to be fed to a core die of a molding machine can be adjusted simply and highly precisely in a short time without using any centrifugal separator.;SOLUTION: In adjusting the blending ratio of cast sand and inorganic salt solution of a slurry containing inorganic salt, fine inorganic powder and cast sand which are settled and collected when a water-soluble core is washed with water or water solution of an inorganic salt binder, the target density ρ of the slurry for obtaining the predetermined blending ratio is determined from the blending ratio of cast sand and inorganic salt solution and the density. The removing amount x of the inorganic salt solution to be removed from the slurry in order to set the density ρ₀ of the slurry to be the target density ρ is obtained, and the inorganic salt solution of the removing amount x is removed from the slurry.;COPYRIGHT: (C)2008,JPO&INPIT