METHOD FOR MANUFACTURING SHELL MOLD USING LOW-MELTING PATTERNS

摘要

A method for manufacturing a shell mold using a low-melting patterns comprises applying a molding sand on a pattern made ​​from frozen water, melting the pattern and partial absorption into the surface layer of molding sand of the products of melting pattern, introduction into the molding sand prior to application on the pattern of the first ingredient – material promoting creation of a solid cake with the products of pattern melting and during use of this mixture - forming the cake, which is characterized in that into the frozen water of pattern the second component is preliminarily introduced that interacts with the first ingredient and thus speeds up forming the solid cake, wherein one of said pair of the ingredients is a binder of the molding sand, while the other is a hardener or a curing agent of this binder.