Abstract: The invention describes a feeder insert (2, 2?, 2?, 2??, 2IV) for use for the casting of metals in vertically separable casting molds, having a first shaped element (8, 8?, 8?, 8??, 8IV) and a second shaped element (10) which (i) are moveable telescopically relative to one another, (ii) delimit a feeder cavity (30) for receiving liquid metal, and (iii) are designed for being position by means of a centring pin (20, 22?) that can be positioned along a centring axis (28), wherein the first shaped element (8, 8?, 8?, 8??, 8IV) has a passage opening (18) for the liquid metal, and wherein the feeder cavity (30) is designed such that, in the case of horizontal arrangement of the centring axis (28), a predominant volume fraction of the feeder cavity (30) can be positioned above the centring axis.

Abstract: An arrangement for use in the production of a separable casting mold, preferably of a vertically separable casting mold is disclosed. The arrangement can include (i) a mold plate and/or a mold pattern, (ii) a feeder system having a feeder element and having a feeder insert, wherein feeder element and feeder insert delimit a feeder cavity for receiving liquid metal. The arrangement also includes one or more tipping prevention elements which are designed to counteract tipping of the feeder system out of the opening axis about the first end of the feeder element when, in the event of the feeder system being acted on with a force acting parallel to the opening axis and in the direction of the first end, the side wall deforms and the spacing between the first and second ends is reduced, wherein the one or more tipping prevention element(s) are/is spaced apart from the opening axis.

Abstract: A feeder insert for use for the casting of metals into casting molds, having a mold body (6) and a supply element (4) which delimit the feeder cavity (10) for receiving liquid metal, wherein the supply element (4) has a passage opening (26) for the liquid metal, and wherein the mold body (6) is movable in a feeder longitudinal direction relative to at least one part of the supply element (4), characterized in that the supply element (4) has a deformation region which is designed to trim in at least in sections in at least a first phase of a relative movement of the mold body (6) in the feeder longitudinal direction and in the direction of the supply element (4).

Abstract: Feeders for use in the foundry industry comprising (a) rice husk ash containing, based on the total amount of the constituents detectable in the rice husk ash by quantitative phase analysis by means of x-ray diffractometry (i) crystalline modifications of silicon dioxide, (ii) monoclinic feldspar and (iii) amorphous silicon dioxide, a total content of at least 70 wt. %, preferably more than 75 wt. % of (i) crystalline modifications of silicon dioxide and (ii) monoclinic feldspar, wherein, based on the total weight of the shapeable composition of the feeder, the amount of this rice husk ash is in the range of from 5 to 50 wt. %, preferably 5 to 25 wt. %, (b) cured binder, (c) optionally fiber material, (d) optionally one or more further fillers, and (e) optionally an oxidizable metal and an oxidizing agent for the oxidizable metal are described.

Abstract: A use of a feeder insert, having a volumetric center of gravity which is offset in relation to the opening axis of the passage opening of said feeder insert, in the manufacture of a casting mold having a vertical mold separation and a feeder insert which for dense feeding of the mold cavity during the casting procedure is attached to the casting mold, is described, wherein the feeder insert is positioned in a prefabricated mold part of the casting mold such that the opening axis of said feeder insert runs below the volumetric center of gravity of the latter.

Abstract: The present invention relates to a core-sheath particle for use as filler for feeder compositions for the production of feeders, comprising (a) a carrier core which has a size within a range of from 30 ?m to 500 ?m and consists of a material which is maximally resistant up to a temperature of 1400° C. and does not contain any polystyrene, (b) a sheath which encloses the core and consists of or comprises (b1) particles having a D 50 value for the particle size of at most 15 ?m, which are resistant up to a temperature of at least 1500° C., and (b2) a binder which binds the particles to one another and to the carrier core, the core-sheath particle being resistant up to a temperature of at least 1450° C.

Abstract: The invention describes a feeder insert (2, 2?, 2?, 2??, 2IV) for use for the casting of metals in vertically separable casting moulds, having a first shaped element (8, 8?, 8?, 8??, 8IV) and a second shaped element (10) which (i) are moveable telescopically relative to one another, (ii) delimit a feeder cavity (30) for receiving liquid metal, and (iii) are designed for being position by means of a centring pin (20, 22?) that can be positioned along a centring axis (28), wherein the first shaped element (8, 8?, 8?, 8??, 8IV) has a passage opening (18) for the liquid metal, and wherein the feeder cavity (30) is designed such that, in the case of horizontal arrangement of the centring axis (28), a predominant volume fraction of the feeder cavity (30) can be positioned above the centring axis.

Abstract: An arrangement for use in the production of a separable casting mould, preferably of a vertically separable casting mould is disclosed. The arrangement can include (i) a mould plate and/or a mould pattern, (ii) a feeder system having a feeder element and having a feeder insert, wherein feeder element and feeder insert delimit a feeder cavity for receiving liquid metal. The arrangement also includes one or more tipping prevention elements which are designed to counteract tipping of the feeder system out of the opening axis about the first end of the feeder element when, in the event of the feeder system being acted on with a force acting parallel to the opening axis and in the direction of the first end, the side wall deforms and the spacing between the first and second ends is reduced, wherein the one or more tipping prevention element(s) are/is spaced apart from the opening axis.

Abstract: A feeder insert for use for the casting of metals into casting molds, having a mold body (6) said a supply element (4) which delimit the feeder cavity (10) for receiving liquid metal, wherein the supply element (4) has a passage opening (26) for the liquid metal, and wherein the mold body (6) is movable in a feeder longitudinal direction relative to at least one part of the supply element (4), characterized in that the supply element (4) has a deformation region (22) which is designed to turn in at least in sections in at least a first phase of a relative movement of the mold body (6) in the feeder longitudinal direction and in the direction of the supply element (4).

Abstract: Feeders for use in the foundry industry comprising (a) rice husk ash containing, based on the total amount of the constituents detectable in the rice husk ash by quantitative phase analysis by means of x-ray diffractometry (i) crystalline modifications of silicon dioxide, (ii) monoclinic feldspar and (iii) amorphous silicon dioxide, a total content of at least 70 wt. %, preferably more than 75 wt. % of (i) crystalline modifications of silicon dioxide and (ii) monoclinic feldspar, wherein, based on the total weight of the shapeable composition of the feeder, the amount of this rice husk ash is in the range of from 5 to 50 wt. %, preferably 5 to 25 wt. %, (b) cured binder, (c) optionally fibre material, (d) optionally one or more further fillers, and (e) optionally an oxidizable metal and an oxidizing agent for the oxidizable metal are described.

Abstract: The present invention relates to a core-sheath particle for use as a filler for feeder masses for the production of feeders, comprising (a) a carrier core having a size of 30 ?m to 500 ?m and composed of a material, which is resistant up to a maximum temperature of 1400° C. and contains no polystyrene, (b) a sheath surrounding the core composed of or comprising (b1) particles having a maximum D 50 value for grain size of 15 ?m and resistant up to a temperature of at least 1500° C., and (b2) a binding agent binding the particles to one another and to the carrier core, wherein the core-sheath particle is resistant to temperatures up to 1450° C.

Abstract: A feeder element for use in casting molds, includes a first end for placing on a mold model and an opposing second end for connecting to or for carrying an upper feeder part. The feeder element has a passage extending from the first to the second end, wherein the feeder element is two-part or multi-part including a tube-like element which forms the first end of the feeder element; an adapter element with an opening into which the tube-like element is inserted so that it is connected with frictional engagement to the adapter element. The adapter element includes one or more path limiters to limit the insertion path of the tube-element, which are set up so that the outer face of the edge of the tube-like element opposing the first end, with insertion to the maximum extent within the adapter element, is present with its entire periphery, or portions thereof, exposed.