Other

Porvair Corporation

Donald B Craig

Leonard S Aubrey

Thomas Margaria

Sara M Robinson

Steven H Martin

A strainer for molten metal. The strainer comprises a well and a multiplicity of passages. Each passage comprises a first cavity a second cavity with a smaller equivalent diameter than the first cavity. A neck is between the first cavity and second cavity. An inoculation pellet is received in the well.

Inoculant-strainer with improved filtration effectiveness and inoculant dissolution

A method for inoculating molten iron. The method comprises passing the molten iron through a filter assembly at an approach velocity of about 1 to about 60 cm/sec. The filter assembly comprises a filter element and an inoculation pellet in contact with the filter element. The pellet has an inoculant dissolution rate of at least 1 mg/sec. to no more than 320 mg/sec. and comprises about 40-99.9%, by weight, carrier comprising ferrosilicon. The pellet further comprises about 0.1-60%, by weight, at least one inoculating agent selected from a group consisting of cerium, strontium, zirconium, calcium, manganese, barium, bismuth, magnesium, titanium and aluminum or from rare earths.

Inoculation filter

The use of wollastonite fibers having relatively long average fiber lengths as reinforcement agents for unfired sanitaryware bodies. The addition of refined wollastonite to sanitaryware bodies exhibited improved resistance to propagation of cracks, reduced drying and firing shrinkage, fluxing activity, an HF release inhibition upon firing. Reduced shrinkage and increased permeability improves the resistance to cracking during rapid drying and allows faster time schedules to be employed.

Growing community of inventors

Fletcher, NC, United States of America

Donald B Craig