A filter for molten metal having a high melting point is in the form of a net woven of glass yarns formed by twisting a multiplicity of glass fibers together. The glass fibers contain at least 75 wt. % of SiO.sub.2 and are thermally cured at a thermal shrinkage of 2.5 to 15%. The thermal shrinkage is...http://www.google.fr/patents/US4798615?utm_source=gb-gplus-shareBrevet US4798615 - Process for making a filter for molten metal having a high melting point
Process for making a filter for molten metal having a high melting point
