摘要:
Provided is a vehicle subframe such that the thickness of the subframe can be formed in a uniform manner. The vehicle subframe (15) is provided with a main body (32) formed in a hollow shape by means of a core unit (200). The subframe (15) includes: a top parallel section (51) and a bottom rear parallel section (71) that are approximately parallel and that are provided to the top (41) and the bottom (42) of the main body (32); a top left sand elimination opening (56) and a top right sand eliminating opening (57) that are formed at the top parallel section (52); and a left bottom rear sand elimination opening (75) and a right bottom rear sand elimination opening (76) formed at the bottom rear parallel section (71). The left bottom rear sand elimination opening (75) is provided to a site opposing the top left sand elimination opening (56), and is formed in a shape equivalent to the top left sand elimination opening (56). The right bottom rear sand elimination opening (76) is provided to a site opposing the top right sand elimination opening (57), and is formed in a shape equivalent to the top right sand elimination opening (57).
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung einer Gussform für ein Werkstück, das in seinem Inneren zumindest einen Hohlraum definiert, insbesondere für eine Turbinenschaufel, das die Schritte aufweist: a) Fertigen eines vollständigen Modells, dessen äußere und innere Konturen im Wesentlichen mit den äußeren und inneren Konturen des zu gießenden Werkstücks übereinstimmen, mittels eines additiven Herstellungsverfahrens aus einem Modellmaterial; b) Aufbringen eines Gussformmaterials auf sämtliche Außenflächen und Innenflächen des Modells derart, dass das Modell mit Ausnahme zumindest einer Gießöffnung vollständig von dem Gussformmaterial umhüllt ist; und c) Trennen und Entfernen des Modellmaterials von dem Gussformmaterial, wobei das Modell zerstört wird.
摘要:
There is provided a manufacturing method including: forming a molded body element with a molding material containing a ceramic powder and a binder; forming a ceramic molded body by disposing at least one molded body element in a mold and then injecting a molding material containing a ceramic powder and a binder into the mold and graft molding a graft molded body element to the molded body element; and forming a ceramic sintered body by degreasing and sintering the ceramic molded body. A graft connecting surface of the molded body element to which the graft molded body element is graft molded is formed so as to have a surface roughness of 2 µm or more in terms of Ra.
摘要:
A core for forming a cooling microcircuit has at least one row of metering/tripping features configured to form at least one row of protrusions in the cooling microcircuit, a plurality of teardrop features configured to form forming a plurality of fluid passageways in the cooling microcircuit, and a terminal edge. The plurality of teardrop features includes a central teardrop feature having a trailing edge which is spaced from the terminal edge and a first teardrop feature located on a first side of and spaced from the central teardrop feature. The first teardrop feature has a longitudinal axis and is non-symmetrical about the longitudinal axis. A process of using the core and a turbine engine component formed thereby are described.
摘要:
A method for manufacturing a metallic object (10) by casting, comprising the following steps: - generation of a virtual model (11) of the object (10) to be manufactured, - three-dimensional printing of a physical model (12), which corresponds to the virtual model (11), using metallic material that has a melting point that is lower than that of the metallic material of which the object (10) will be made, - insertion of the physical model (12) within a mold (14) containing material in powder form (15), - compaction of the material in powder form (15), creating a negative pressure in the mold (14), - injection of molten metallic material, of which the object (10) must be made, within the mold (14), replacing the physical model (12) by melting its metallic material, and discharge of the material outside the mold (14), - hardening of the object (10) within the mold (14), - opening of the mold (14) and extraction of the object (10).
摘要:
The present application provides a method of producing a component (110). The method may include the steps of creating a dissolvable ceramic material mold (120, 130) in an additive manufacturing process, casting a metallic material in the dissolvable ceramic material mold (120, 130), creating the component (110), and dissolving the dissolvable ceramic material.
摘要:
A compressor housing 1 is provided with a scroll piece 2 that includes a cylindrical intake port forming section 21 that forms an intake port 11, a scroll wall surface forming section 22 that forms an air-intake side wall surface of a discharge scroll chamber 12, and a scroll outer circumferential section 23 that covers an outer circumferential side of the discharge scroll chamber 12; a shroud piece 3 that includes a cylindrical shroud press fitted section 31 press fitted into the intake port forming section 21, and a shroud wall surface forming section 32 that forms an inner circumferential side wall surface of the discharge scroll chamber 12 and also forms a shroud surface 321 that opposes an impeller 5 and a diffuser surface 322; and an outer circumferential annular piece 4 that includes an outer circumferential annular press fitted section 41 that is press fitted inside the scroll outer circumferential section 23, and an outer circumferential annular wall surface forming section 42 that forms an outer circumferential side wall surface of the discharge scroll chamber 12.