Abstract: An improved filtration system is provided. The filtration system comprises a pour cup comprising a reservoir and a filter engagement region wherein the filter engagement region comprises a pour cup taper, tab slots and a bottom. The filtration system also comprises a filter wherein the filter comprises a filter taper and filter tabs wherein the filter tabs can be received by the tab slots in one rotational orientation of the filter relative to the pour cup and the tab slots engage with the bottom in a second rotational orientation of the filter relative to the pour cup.

Abstract: An improved filter is described which is particularly suitable for filtering molten metal. The filter has a porous open celled ceramic foam body with voids separated by struts wherein a portion of the struts are densified with glass.

Abstract: An improved filter is described which is particularly suitable for filtering molten metal. The filter has a porous open celled ceramic foam body with voids separated by struts wherein a portion of the struts are densified with glass.

Abstract: A fill tube for die casting machine includes a vitreous coating thereon effective to reduce or eliminate the flow of air through the gas permeable wall of the fill tube during die casting when air pressure is applied on the molten metal or alloy in the vessel.

Abstract: A crucible material whose chemical composition consists essentially of, in weight %, about 93.5% to about 97.5% ZrO2, about 0.2% to about 1.0% MgO, about 1.0% to about 3.0% SiO2, and about 1.5% to about 2.5% Y2O3 wherein the SiO2 can be present as silica and a silicate of zirconium, magnesium, and/or yttrium. When formed to a crucible shape and sintered (fired) at elevated temperature, the ceramic material provides a crucible with improved resistance to thermal shock when heated to over 1100 degrees C.