A heat-sink base provided with heat-sink fin portions, a manufacturing method and a motor provided with the heat-sink base. The base is produced by pouring cast metal into a mold cavity to replace a pattern having a predetermined sublimation temperature. The base includes a preformed heat-sink member comprising a plurality of heat-sink fin portions and at least one anchor portion embedded at least partially in the pattern, and a base body comprising an enclosed base portion and a holder portion for receiving and holding the at least one anchor portion. By virtue of the invented method, the heat-sink member having an extremely thin thickness can be mounted on the base body and the overall surface area of the heat-sink base is increased considerably.

A modular spruing system apparatus contains a base section, a main sprue cone, a center rod, a plurality of trunk sections, a plurality of arm sections, and an end cap. The main sprue cone is mounted onto the base section. The center rod centrally traverses through the base section and the main sprue cone so that the user can design a spruing tree of desired height. A center rod receiving hole of each of the plurality of trunk sections allows the center rod to traverse through the plurality of trunk sections when removably attached to each other. Next, the plurality of arm sections is attached to the plurality of branch sections. The plurality of arm sections can be fixed or removably attached to the plurality of branch sections. When the desired height is reached, the plurality of trunk sections is fastened together with the end cap.

A method for producing a helical, electrically conducting body. The method including: producing a helical pattern as a lost mold made of a pattern material that can be at least one of liquefied and evaporated under the action of heat; covering the helical pattern with an insulating layer; embedding the helical pattern in foundry sand; pouring a metallic casting material into the lost mold, displacing the pattern material, and bonding with the insulating layer to form a cast body; and removing the cast body, together with the insulating layer adhering thereto, from the foundry sand.

A method for manufacturing a metal workpiece by casting a metal alloy in a mould, in which prior to the casting, a chart is determined providing a risk of appearance of recrystallised grains during the casting and/or solidification of the metal workpiece, depending on temperature and plastic deformation energy conditions undergone by the metal workpiece, the casting of the metal alloy in the mould being implemented under casting and solidification conditions determined using the chart in order for the temperature and plastic deformation energy conditions undergone by the metal workpiece to be less than a given threshold for the risk of appearance of recrystallised grains.

An airfoil core includes a first core portion that has a hybrid skin core, a tip flag core, and a trailing edge core. A second core portion has a serpentine core and a leading edge core.

An airfoil core includes a first core portion that has a hybrid skin core, a tip flag core, and a trailing edge core. A second core portion has a serpentine core and a leading edge core.

A heat-sink base provided with heat-sink fin portions, a manufacturing method and a motor provided with the heat-sink base. The base is produced by pouring cast metal into a mold cavity to replace a pattern having a predetermined sublimation temperature. The base includes a preformed heat-sink member comprising a plurality of heat-sink fin portions and at least one anchor portion embedded at least partially in the pattern, and a base body comprising an enclosed base portion and a holder portion for receiving and holding the at least one anchor portion. By virtue of the invented method, the heat-sink member having an extremely thin thickness can be mounted on the base body and the overall surface area of the heat-sink base is increased considerably.

A method of forming an airfoil, includes forming a hybrid skin core, a tip flag core, and a trailing edge core. The hybrid skin core, tip flag core, and trailing edge core are connected to form a first core portion. A leading edge core and a serpentine core are formed. The first core portion, the leading edge core, and the serpentine core are assembled together to form an airfoil core. An airfoil is formed around the airfoil core.

A gas turbine engine component includes a structure including spaced apart first and second exterior walls that extend in a first direction to an endwall. The first and second exterior walls are joined at the endwall to provide a cooling cavity. A wishbone baffle is arranged in the cooling cavity and includes first and second interior walls respectively adjacent to the first and second exterior walls. The first and second interior walls extend in the first direction to and are joined by an apex to provide a first cavity. The wishbone baffle separates the first cavity from a second cavity provided between the apex and the endwall.

A mold assembly for use in forming a component having an outer wall of a predetermined thickness includes a mold and a jacketed core. The jacketed core includes a jacket that includes a first jacket outer wall coupled against an interior wall of the mold, a second jacket outer wall positioned interiorly from the first jacket outer wall, and at least one jacketed cavity defined therebetween. The at least one jacketed cavity is configured to receive a molten component material therein. The jacketed core also includes a core positioned interiorly from the second jacket outer wall. The core includes a perimeter coupled against the second jacket outer wall. The jacket separates the perimeter from the interior wall by the predetermined thickness, such that the outer wall is formable between the perimeter and the interior wall.