NET-LIKE FILTER FOR FILTERING MOLTEN HIGH MELTING POINT METAL

摘要

PURPOSE:To obtain a filter which substantially withstands a molten high melting metal and has an excellent filtration effect for the molten metal by forming a net-like filter of glass fibers contg. specific components. CONSTITUTION:The net-like filter for filtering the molten high melting point metal is formed of the glass filters to a mesh shape. The glass fibers contain >=75wt% SiO22 and are preliminarily shrunk by calcination. The net body after the calcination treatment is adequate for handling of filter if an acidic or neutral consolidating agent is deposited on the fibers to provide a shape retaining property to said body. Since the filter is molded of the glass fibers in the above- mentioned manner, the filter has excellent heat resistance and withstands all kinds of molten cast irons.