摘要:
Die Erfindung betrifft ein Verfahren zum Herstellen eines Laufrads eines Abgasturboladers aus einer TiAI-Legierung (3). Dabei ist vorgesehen, dass die Legierung (3) einen Anteil von wenigstens 1,9 at/% Niob aufweist und das Laufrad durch Schleudergießen der Legierung (3) ausgebildet wird. Die Erfindung betrifft weiterhin eine TiAI-Legierung (3).
摘要:
The invention concerns an apparatus for centrifugal casting, said apparatus comprising: a rotor (1) having a shaft (2) extending in an essentially vertical direction therefrom and being rotatable around an axis (A) defined by the shaft (2), the rotor (1) having at least one fixing means for releaseably fixing at least one mold (9) in a first radial distance from the axis (A), and a means for accommodating at least one crucible (6, 7, 23) being associated with the mold (9) so that an outlet opening (8) of the crucible (7, 23) is arranged opposite an inlet opening of the mold (9), a drive device (13) for driving the shaft (2) in order to rotate the rotor (1), and an auxiliary acceleration device (14, 16, 25, 26, 27) for generating a force to overcome a moment of inertia of the rotor (1).
摘要:
A centrifugal casting method and apparatus for casting molten metal into a mold. The casting apparatus includes a housing provided with a bottom surface and a retaining wall for minimizing a number of projectiles that escape the housing during casting operations. A prime mover is provided for imparting a centrifugal force on the molten metal, and an arm is coupled to the prime mover adjacent to a proximate end to be rotated about a rotational axis and to support a cradle for receiving the mold adjacent to a distal end. A crucible is to be coupled to the arm for supporting the molten metal to be cast into the mold, while a catch surface is disposed between the arm and the bottom surface of the housing to collect molten metal that is cast but not received within the mold.
摘要:
Various enhanced features are provided for centrifugal casting apparatuses, rotatable assemblies, and molds for casting products from molten material. These enhanced features include, among others, tapered gate portions positioned adjacent to the cavities of a mold, extended and shared gating systems, and detachable mold structures for modifying the thermodynamic characteristics and behavior of molds during casting operations.
摘要:
The invention concerns an apparatus for centrifugal casting under vacuum, said apparatus comprising: a rotor (1) having a shaft (2) extending in an essentially vertical direction therefrom and being rotatable around an axis (A) defined by the shaft (2), the rotor (1) having at least one fixing means for releaseably fixing at least one mold (9) in a first radial distance from the axis (A), and a means for accommodating at least one crucible (6, 7, 23) being associated with the mold (9) so that an outlet opening (8) of the crucible (7, 23) is arranged opposite an inlet opening of the mold (9), the rotor (1) further comprising a gas-tight housing (1, 10) in which the mold (9) and the crucible (7, 23) are accommodated, a vacuum source to create a vacuum in the housing (1, 10), a heating device for melting a metal, the metal being taken up in the gas-tight housing (1, 10) within in the crucible (7, 23), a drive device (13) for driving the shaft (2) in order to rotate the rotor (1), and an auxiliary acceleration device (14, 16, 25, 26, 27) for generating a force to overcome a moment of inertia of the rotor (1).
摘要:
A centrifugal casting method and apparatus for casting molten metal into a mold. The casting apparatus includes a housing provided with a bottom surface and a retaining wall for minimizing a number of projectiles that escape the housing during casting operations. A prime mover is provided for imparting a centrifugal force on the molten metal, and an arm is coupled to the prime mover adjacent to a proximate end to be rotated about a rotational axis and to support a cradle for receiving the mold adjacent to a distal end. A crucible is to be coupled to the arm for supporting the molten metal to be cast into the mold, while a catch surface is disposed between the arm and the bottom surface of the housing to collect molten metal that is cast but not received within the mold.
摘要:
The invention relates to a centrifugal casting method, a centrifugal casting device, a hollow casting mold (13), a feed trough forming device which is suitable for producing hollow casting molds of this type and applications of these devices and methods. Cast workpieces are produced using the centrifugal casting technique by arranging and driving several mold cavities (14) formed by at least one hollow casting mold (13) in such a way that the mold cavities (14) rotate about a common axis of rotation (18). At least three mold cavities (14) are provided and these rotate in one plane.
摘要:
Multi-mold centrifugal casting system comprising basically conventional centrifugal casting apparatus (10) except that instead of receiving a single mold, i.e., one pair of mold halves, a plurality of molds (44, 46 and 48) are mounted in the apparatus (10) in stacked relation, with all mold halves (44a and 44b, 46a and 46b, and 48a and 48b), having central openings to define a plurality of ring-like molds (44, 46 and 48). A manifold member (54) is positioned in the center of the stacked ring-like molds (44, 46 and 48) for receiving and simultaneously feeding molten metal to each of the stacked molds (44, 46 and 48).
摘要:
Dispositif de fabrication (10) d'une ébauche en alliage métallique par coulée centrifuge d'un alliage métallique en fusion, comprenant une roue de coulée centrifuge (20), la roue de coulée centrifuge (20) étant rotative autour d'un axe de rotation (A) et comprenant un moule (22) pour recevoir l'alliage métallique en fusion, le moule s'étendant dans une direction radiale (RI) par rapport à l'axe de rotation (A). Le dispositif (10) comprend au moins un aimant arrangé de manière à induire un courant électrique induit dans le moule (22) lors de la rotation de la roue de coulée centrifuge (20) autour de l'axe de rotation (A).