Abstract: A holding device for holding a casting core in a casting mold, especially in a die-casting mold, includes a plurality of clamping sections which are positioned in relation to each other in such a way that a clamping region for a casting core is formed.

Abstract: A polishing clamp for clamping a work-piece to be polished and a polishing method using the same. The polishing clamp includes a fixing-block for fixing the work-piece to be polished, a recess formed on an end surface of the fixing-block and having the same shape as the work-piece to be polished, the work-piece able to be embedded in the recess, and when the work-piece is placed in the recess, a polished surface of the work-piece to be polished is flush with the end surface of the fixing-block forming the recess. Since a portion of the work-piece to be polished that does not need polish could be prevented from contacting the polishing apparatus by means of the fixing-block when being polished, the over-wearing may not occur at edges and corners of the work-piece, improving the quality of polishing. This can improve the quality of, e.g., a light guide plate.

Abstract: A mold for casting a workpiece that includes a casting shell, a casting core and casting pin that supports the core within the shell. The casting shell includes an interior shell surface. The casting core is located within the shell, and includes a sidewall extending between a first core surface and a second core surface. The casting pin includes an intermediate segment connected between a first support segment and a second support segment. The intermediate segment contacts the sidewall. The first support segment extends from the first core surface to a first side of the interior shell surface. The second support segment extends from the second core surface to a second side of the interior shell surface that is opposite the first side.

Abstract: An apparatus for casting material has a die for receiving a compressive force, the die having a shaped-opening for receiving a die insert. The die insert has an exterior shape that is adapted to cooperate with and be received in the opening such that compressive forces impinging upon the die are focused upon the die insert such that tensile forces within the die and impinging upon the die insert are minimized.

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 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: 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: The pins which are used for the support of a core in a lost wax casing process are provided with caps. The caps provide sufficient surface area for encapsulation by ceramic slurry. Heat loss from the metal melt via the pins is thus obviated along with undesirable grain nucleation.

Abstract: A gating system of general application for pouring foundry molds by gravity, based on a distinct prefabricated casting skin-strainer, located along and following the casting surface, structurally constructed and mold supported to withstand the impact of falling molten metal and the consequent metalistatic pressure, all while the cavity is filled through a skin-strainer aperture and with the skin-strainer retaining its original position and shape. The skin-strainer is able, when necessary, to allow the feeding of the casting once the mold is full and before it is solidified. Depending on the casting to be poured the system may include an overhead melt distributor, and techniques for mold casting cavity venting and sprue-feeder extraction.