Abstract: In a method for producing a riser for inserting into a casting mold used for casting metals, the riser includes a riser body (31) surrounding an inner cavity (36) as a riser volume and is composed of an exothermic and/or insulating riser material (30). To produce a single-piece riser body (31) in a two-part core box (10), a cavity (14) reproducing the outer contour of the riser body (31) is formed and, in order to produce the inner cavity (36), a reversibly expandable king (15) is set in the cavity (14) in such a way that, in the shooting of the riser body (31), the wall region (32), the cup region (33), and the base region (34) of the riser body are formed by the riser material (30) introduced into the intermediate space (41) between the expanded king (15) and the inner wall (40) of the cavity (14).

Abstract: A process produces a composite cast part containing an insert part and casting material. The insert part is integrally bonded to the casting material. The process includes: producing the insert part formed of an exothermic material; encapsulating or embedding the insert part; inserting the encapsulated/embedded insert part into a casting mold; filling the mold with molten mass; and flowing a casting material on the insert part. The exothermic material ignites through contact with the flowing casting material or as a result of the ignition temperature of the exothermic mass being reached, whereby a temperature gradient between the cast material solidifying molten mass the insert part is reduced.

Abstract: In a method for producing a riser for inserting into a casting mold used for casting metals, the riser includes a riser body (31) surrounding an inner cavity (36) as a riser volume and is composed of an exothermic and/or insulating riser material (30). To produce a single-piece riser body (31) in a two-part core box (10), a cavity (14) reproducing the outer contour of the riser body (31) is formed and, in order to produce the inner cavity (36), a reversibly expandable king (15) is set in the cavity (14) in such a way that, in the shooting of the riser body (31), the wall region (32), the cup region (33), and the base region (34) of the riser body are formed by the riser material (30) introduced into the intermediate space (41) between the expanded king (15) and the inner wall (40) of the cavity (14).

Abstract: The invention relates to a method for producing a feeder configured for use in a casting mold used for casting metals, wherein the feeder has a feeder body (14) enclosing a feeder cavity (15) and a through opening (19) in its base region (18) for connecting the feeder cavity (15) to the casting mold and the feeder body (14) consists of an exothermic material and is enclosed on its outer side at least in regions by an external shell (27) consisting of insulating refractory material, and wherein the feeder is provided with a feeder foot (20) arranged externally in its base region (18) and having an opening (21) flush with the through opening (19).

Abstract: A process for producing a composite cast part containing an insert part and casting material, wherein the insert part is integrally bonded to the casting material and the process comprises the following steps: producing the insert part formed of an exothermic material; encapsulating or embedding the insert part; inserting the encapsulated/embedded insert part into a casting mould; filling the mould with molten mass; and flowing a casting material on the insert part wherein the exothermic material ignites through contact with the flowing casting material or as a result of the ignition temperature of the exothermic mass being reached, whereby a temperature gradient between the cast material solidifying molten mass the insert part is reduced.

Abstract: The invention relates to a method for producing a feeder configured for use in a casting mold used for casting metals, wherein the feeder has a feeder body (14) enclosing a feeder cavity (15) and a through opening (19) in its base region (18) for connecting the feeder cavity (15) to the casting mold and the feeder body (14) consists of an exothermic material and is enclosed on its outer side at least in regions by an external shell (27) consisting of insulating refractory material, and wherein the feeder is provided with a feeder foot (20) arranged externally in its base region (18) and having an opening (21) flush with the through opening (19).

Abstract: A semiconductor bridge (SCB) device. In one embodiment, the SCB device includes a laminate layer on top of an insulating material, wherein the laminate layer comprises a series of layers of at least two reactive materials, and wherein the laminate layer comprises two relatively large sections that substantially cover the surface area of the insulating material, and a bridge section joining the two relatively large sections. At least one conductive contact pad is coupled to at least one of the series of layers, wherein a predetermined current through the conductive contact pad causes the bridge section to initiate a reaction in which the laminate layer is involved. In one embodiment, the SCB device includes an integrated diode formed by an interface of the insulating material with another material, such as a metal.

Abstract: A semiconductor bridge (SCB) device. In one embodiment, the SCB device includes a laminate layer on top of an insulating material, wherein the laminate layer comprises a series of layers of at least two reactive materials, and wherein the laminate layer comprises two relatively large sections that substantially cover the surface area of the insulating material, and a bridge section joining the two relatively large sections. At least one conductive contact pad is coupled to at least one of the series of layers, wherein a predetermined current through the conductive contact pad causes the bridge section to initiate a reaction in which the laminate layer is involved. In one embodiment, the SCB device includes an integrated diode formed by an interface of the insulating material with another material, such as a metal.