Abstract: A core tie having a varying cross sectional diameter, a component including such a core tie, and a method of casting a hot gas path component for a turbomachine are provided herein. In an embodiment, the core tie includes a tie member having an axial length; and a cross sectional diameter which varies along the axial length of the tie member. A variation in the cross sectional diameter of the tie member positively secures a position of the core tie relative to the core.

Abstract: A component casting apparatus includes a mold to receive a molten solid for casting a component. The mold includes a first sacrificial layer to define a housing of the component and a second sacrificial layer to form at least one core passage of the component in response to contact from the molten solid. The component casting apparatus further includes a trusset disposed against an outer surface of the second sacrificial layer and formed from metal to support the second sacrificial layer.

Abstract: A chaplet includes a first portion configured to engage one of a core and a mold, a second portion configured to engage the other of the core and the mold, and an elongated rod extending between the first portion and the second portion. The rod has a plurality of breakaway sites for allowing the length thereof to be selectively reduced in predetermined increments.

Abstract: It is a technical common knowledge that a chaplet used in casting of a hollow casting is fusion-bonded with the melt and is incorporated into the casting. However, the adhesion between the chaplet and the casting body is not necessarily satisfactory, thereby incurring the strength reduction of a thin-wall hollow casting. A core for a thin-wall hollow casting according to the present invention is provided with a chaplet mounted thereon. The chaplet has arcuate portion 2 with a gap 5 and a plurality of projections 4 from an outer peripheral of the arcuate portion and is in contact with an inner wall 7 of a mold. The entire arcuate portion of the chaplet is included in a groove 6 formed around an outer peripheral portion of the core body. Only the projections 4 of the chaplet protrude from the core body, when the chaplet is inserted in the groove.

Abstract: System and method for fusing a chaplet to a casting. The method includes placing the chaplet on an upper surface of a mold; distributing a heater around the chaplet such that the heater is not exposed to the casting; placing a core on the chaplet such that the mold and the core define a component of a machine; heating the chaplet with the heater to a predetermined temperature; and pouring the casting in the mold, around the core and the chaplet, when the chaplet is at the predetermined temperature.

Abstract: A solid high silicon cast iron elongated anode has a midpoint electrical connection keeping the connection as far as possible from the ends to combat the deleterious pencil effect. The anode is made by casting using a hollow or shell core to form a small axial hole extending from one end. The sand or foundry material of the core is removed and the wall of the hole at the blind end of the hole is at least partially finished to receive a diagonally split slug to which a lead wire is connected. Alternatively the hole is formed by a steel pipe which is left in place as a hole liner. The pipe may be supported by one or more chaplets. The slug is fastened in the blind end of the hole by a driving tool rotating a threaded headed bolt with both axial and rotational force to hold the connection in the blind end of the hole as it is secured in place. The hole is filled with a potting compound sealing the connection in the center of the solid cast iron anode.

Abstract: A cast abrasion resistant hollow ball is formed with a hollow ceramic core that generates no gas during the casting operation. Solid ceramic bars or supports hold the hollow ceramic core in a fixed location at the center of the cast ball during the casting process. There are no open holes or openings in the ceramic supports due to the fact that the hollow ceramic sphere is composed of an inert refractory material which eliminates any gases being generated during the pouring and solidification of the liquid metal in the casting process.

Abstract: In an investment casting process including the known steps of injecting a molten wax into a die, allowing the wax to solidify, removing the die, investing the wax with ceramic, firing the ceramic and removing the wax so as to provide a ceramic mould, and casting a molten material into the mould, and apparatus including a ceramic core the shape and size of the cavity to be provided in the blade, a removable wax impression die surrounding and spaced from the core member so that the space between the die and the core member is the shape and size of the blade, there is provided a number of platinum chaplets adapted and arranged to support and locate the core in relation to the ceramic mould by point contact abutment with an adjacent mould surface.

Abstract: The locating pins have notched ends, each of which simultaneously restricts the movement of an expendable core in two orthogonal directions in a die casting die. A plurality of these pins alone and with other pins project into the space between the printout cavity in a die casting die and the printout portion of an expendable core positioned in that cavity. Other pins having flat ends locate the core in only one directional line. Still other pins having tapered ends require special pockets in the printout section of the core, which pockets have sides that must be formed adjacent to the tapered surfaces of these pins. The configurations of the space around the printout portions of the cores permit molten metal injected into the die to produce a skin or skull over the printout portions, which skin can have thicker ribs or portions through it for further reinforcing the printout portions.

Abstract: A plurality of supporting elements for providing a separation between adjacent casting molds are interconnected by a web or band. The interconnecting element allows the supporting elements to be easily placed on a mold surface, and requires securing only selected ones of the supporting elements to the mold surface. The remainder of the supporting elements are held in place by the action of the interconnecting element.

Abstract: The subject invention is a process for improving the performance capacity of chaplets or spacer supports as used in metal casting as supports adjacent the mold cavity, said process comprising the steps of immersing the chaplet into a water-based solution of borax and thereupon employing the chaplet in the molding process with said solution covering the chaplet.