Foseco International Limited

Other

David L Jones

Helmut Jaunich

Kassim Juma

David A Bell

Andrew M Plowman

Reinhard Stoetzel

Andreas Ansorge

Martin S Swift

A process for making a filter suitable for filtering molten metal comprising (i) forming a slurry comprising (a) particles of a refractory material, (b) a binder and (c) a liquid carrier, (ii) coating a disposable former with a slurry, (iii) drying the coated former, (iv) optionally applying one or more additional coats of a refractory material and/or a binder, optionally with liquid carrier, and drying the one or more additional coats, and (v) firing the coated former to produce the filter, wherein the binder is a carbon rich source selected from one or more of the following classes of materials: pitches, tars and organic polymers that degrade to form carbon on pyrolysis.

Refractory articles

A filter for molten metal is an open-pored porous material comprising particles of refractory material embedded in and bonded together by a carbon matrix bonding material. The filter can be made by forming a porous article from refractory particles, e.g. refractory oxide, carbide or graphite, and a carbon-rich binder, e.g. tar, pitch or an organic (preferably aromatic) polymer that degrades to form carbon on pyrolysis, and then firing the porous article to generate the carbon matrix in which the refractory particles are embedded. The porous article is preferably made by coating a reticulated polyurethane foam with binder and refractory particles, and firing at preferably no higher than 800&#xb0; C.

Filters for light metals

An article of refractory holloware for use in a runner assembly for casting molten metals e.g. ferrous metals, has at least one inner surface adapted to increase the internal surface contact area of the article. The surface is so arranged as to effect at least two abrupt changes of direction of flow of molten metal flowing through the article. Use of the article minimizes the level of non-metallic inclusions in ingots and castings.

Runner system and article for the casting of metals

A container comprising a body having a base and a side wall extending upwardly from the base, at least one support member selectively movable between a first position in which a further container can be stacked inside the body, and a second position in which the support member can support the further container above the base, the or each support member being provided with at least one strengthening formation which is adapted to cooperate with a formation in the side wall, and strengthening means provided on the side wall in the vicinity of the or each formation in the side wall.

Container

A container comprises a body having a base and a side wall extending upwardly from the base. Support means is provided which is selectively movable between a first position in which a further container can be stacked inside the body, and a second position in which the support means can support a further container above the base.

An article of refractory hollowware for use in a runner assembly for casting molten metals e.g. ferrous metals, has at least one inner surface adapted to increase the internal surface contact area of the article. The surface is so arranged as to effect at least two abrupt changes of direction of flow of molten metal flowing through the article. Use of the article minimizes the level of non-metallic inclusions in ingots and castings.

Growing community of inventors

Birmingham, United Kingdom

David L Jones