Abstract: The present invention relates to a feeder system for use in metal casting operations utilising casting moulds and to a feeder sleeve for use in the feeder system. There is provided a feeder system for metal casting, the feeder system comprising a feeder sleeve mounted on a breaker core, the feeder sleeve having a first end and an opposite second end, a longitudinal axis extending between the first and second ends, and a continuous sidewall extending generally around the longitudinal axis between the first and second ends, the sidewall defining a cavity for receiving molten metal during casting, and the breaker core defining an open bore therethrough for connecting the cavity to the casting, wherein the first end of the feeder sleeve is mounted on the breaker core, and the feeder sleeve comprises at least one protrusion extending from an exterior surface of the sidewall at the second end of the feeder sleeve.

Abstract: The present invention relates to a feeder system for use in metal casting operations utilising casting moulds, and to feeder sleeves and breaker cores for use in the feeder system.

Abstract: Provided is a system for casting molten metals. The system includes a mould comprising a casting cavity having an inlet, and a bore between an upper surface of the mould and the inlet. The system further includes a shroud comprising a funnel and a hollow shaft, wherein the funnel is located outside of the mould, adjacent the upper surface, and the hollow shaft is received within the bore and is moveable therein. A lifting mechanism is located on the upper surface of the mould, the lifting mechanism being operable to lift the funnel of the shroud away from the upper surface for bringing the shroud into engagement with a ladle nozzle. Also provided is a method for casting molten metals using the system.

Abstract: The present invention relates to a feeder system for use in metal casting operations utilising casting moulds and to a feeder sleeve for use in the feeder system. There is provided a feeder system for metal casting, the feeder system comprising a feeder sleeve mounted on a breaker core, the feeder sleeve having a first end and an opposite second end, a longitudinal axis extending between the first and second ends, and a continuous sidewall extending generally around the longitudinal axis between the first and second ends, the sidewall defining a cavity for receiving molten metal during casting, and the breaker core defining an open bore therethrough for connecting the cavity to the casting, wherein the first end of the feeder sleeve is mounted on the breaker core, and the feeder sleeve comprises at least one protrusion extending from an exterior surface of the sidewall at the second end of the feeder sleeve.

Abstract: The present invention relates to a feeder system for use in metal casting operations utilising casting moulds, and to feeder sleeves and breaker cores for use in the feeder system.

Abstract: A feeder system for metal casting comprising a feeder sleeve mounted on a tubular body. The feeder sleeve has a first end and a second end and a longitudinal axis extending generally between said first and second ends. The feeder sleeve comprises a continuous sidewall that extends generally around the longitudinal axis that defines a cavity for receiving liquid metal during casting and the sidewall has a base at the first end of the feeder sleeve. The tubular body defines an open bore therethrough for connecting the cavity to the casting in use. The feeder sleeve comprises at least one cut-out that extends into the sidewall from the base to a first depth and the tubular body projects into the cut-out to a second depth, the tubular body having at least one abrading region in contact with a surface of the feeder sleeve within the cut-out.

Abstract: A feeder system for metal casting comprising a feeder sleeve mounted on a tubular body. The tubular body has a first end and an opposite second end and a compressible portion therebetween so that upon application of a force in use, the distance between the first and second ends is reduced. The feeder sleeve has a longitudinal axis and comprises a continuous sidewall extending generally around the longitudinal axis that defines a cavity for receiving liquid metal during casting, the sidewall having a base adjacent the second end of the tubular body. The tubular body defines an open bore therethrough for connecting the cavity to the casting. The feeder sleeve has at least one cut-out that extends into the sidewall from the base and the second end of the tubular body projects into the cut-out to a fixed depth. The cut-out can be a groove which is separate from the cavity. The invention also resides in a process employing the feeder system.

Abstract: A feeder system for metal casting comprising a feeder sleeve mounted on a tubular body. The feeder sleeve has a first end and a second end and a longitudinal axis extending generally between said first and second ends. The feeder sleeve comprises a continuous sidewall that extends generally around the longitudinal axis that defines a cavity for receiving liquid metal during casting and the sidewall has a base at the first end of the feeder sleeve. The tubular body defines an open bore therethrough for connecting the cavity to the casting in use. The feeder sleeve comprises at least one cut-out that extends into the sidewall from the base to a first depth and the tubular body projects into the cut-out to a second depth, the tubular body having at least one abrading region in contact with a surface of the feeder sleeve within the cut-out.

Abstract: A feeder system for metal casting comprising a feeder sleeve mounted on a tubular body. The tubular body has a first end and an opposite second end and a compressible portion therebetween so that upon application of a force in use, the distance between the first and second ends is reduced. The feeder sleeve has a longitudinal axis and comprises a continuous sidewall extending generally around the longitudinal axis that defines a cavity for receiving liquid metal during casting, the sidewall having a base adjacent the second end of the tubular body. The tubular body defines an open bore therethrough for connecting the cavity to the casting. The feeder sleeve has at least one cut-out that extends into the sidewall from the base and the second end of the tubular body projects into the cut-out to a fixed depth. The cut-out can be a groove which is separate from the cavity. The invention also resides in a feeder sleeve for use in the system and a process employing the feeder system.

Abstract: The present invention relates to a feeder system for metal casting. The feeder system comprises a feeder sleeve mounted on a tubular body. The feeder sleeve has a longitudinal axis and comprises a continuous sidewall that defines a cavity for receiving liquid metal during casting. The sidewall extends generally around the longitudinal axis and has a base adjacent the tubular body. The tubular body defines an open bore therethrough for connecting the cavity to the casting. A groove extends into the sidewall from the base to a first depth and the tubular body projects into the groove to a second depth and is held in position by retaining means. The second depth being less than the first depth so that upon application of a force in use the retaining means are overcome and the tubular body is pushed further into the groove.

Abstract: The invention provides a neck-down feeder of unitary construction for use in metal casting. The feeder comprises a body portion integrally formed at a first end thereof with a tapered base portion for mounting on a mold pattern. The body portion and the base portion are defined by a continuous sidewall having one or more regions of weakness arranged such that the feeder is breakable in use whereby at least a part of the base portion detaches from the body portion and is received therein.

Abstract: A method for the production of closed edge filters suitable for filtering molten metal and filters made by such a method. The method comprises: providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter; applying a liquid comprising an organic coating component to the first surface; solidifying the organic coating component to form a filter precursor having a volatilizable coating on the first surface; impregnating the filter precursor with a slurry comprising particles of a refractory material, a binder and a liquid carrier; and drying and firing the impregnated filter precursor to form the filter having a closed edge.

Abstract: An elongate collapsible feeder element for use in metal casting and a feeder system with attached feeder element and feeder sleeve. The feeder element has an A end and an opposite B end measured along the height, and a C end and an opposite D end measured along the length. The A end is for mounting on a mold pattern or swing plate and the opposite B end is for receiving a feeder sleeve. A bore is between the A and B ends defined by a sidewall having a stepped collapsible portion. The feeder element is compressible in use to reduce the distance between the A and B ends. The bore is offset from the centre of the feeder element along the length towards the C end and a second sidewall region is non-planar, contiguous with a third sidewall region and located between the bore axis and the D end.

Abstract: A method for the production of closed edge filters suitable for filtering molten metal and filters made by such a method. The method comprises: providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter; applying a liquid comprising an organic coating component to the first surface; solidifying the organic coating component to form a filter precursor having a volatilisable coating on the first surface; impregnating the filter precursor with a slurry comprising particles of a refractory material, a binder and a liquid carrier; and drying and firing the impregnated filter precursor to form the filter having a closed edge.

Abstract: Method for the production of a closed edge refractory foam filter, by providing a reticulated foam substrate having at least one first surface for forming a side face of the filter and two opposed second surfaces for forming the through-flow faces of the filter, applying a liquid including an organic coating component to the first surface, solidifying the organic coating component to form a filter precursor having a continuous volatilizable coating on the first surface, and impregnating the filter precursor with a slurry containing particles of a refractory material, a binder and a liquid carrier. The impregnated filter precursor is dried and fired to form the filter having a closed edge.

Abstract: A foundry coating composition for molds and cores, a process for preparing coated foundry molds and cores, and coated molds and cores obtainable by the process. The foundry coating composition comprises a liquid carrier; a binder; and a particulate refractory filler. The particulate refractory filler comprises a first (relatively coarse) fraction having a particle size of d>38 ?m and a second (relatively fine) fraction having a particle size of d<38 ?m. No more than 10% of the total particulate refractory filler has a particle size of 38 ?m<d<53 ?m and no more than 50% of the second (relatively fine) fraction is constituted by calcined kaolin. The foundry coating composition is applied to molds and cores to assist in the removal of the casting from the mold and prevention of casting defects.