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AssigneeALD Vacuum Technologies GmbH
InventorsAlok Choudhury, Matthias Blum, Harald Scholz, Georg Jarczyk, Franz Hugo, Hans Günther Fellmann, Peter Busse, Thomas Ruppel, Alfred Henn
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Molds (1) with annular mold parts (2, 3) divided by at least one plane of division (E—E) and forming a plurality of cavities (8) disposed at least substantially radially to a centrifugation axis (A—A), serve for the production of precision castings by centrifugal casting, especially of parts made of materials containing titanium for internal combustion engines, the molds (1) and a casting system being contained in a closed chamber. To automate production, at least one mold part (2, 3) is made to rotate in its own rotational guide, and two mold parts (2, 3) together with the corresponding rotational guides are brought to a closed position for the casting and solidification and to an open position for the removal of the precision castings. When cast, the precision castings are preferably joined together at their radially inward pointing ends by a circumferential ring of the solidified metal and thus a circle of castings can be removed from the opened mold by a manipulating system.
A method for the production of precision castings by centrifugation about a centrifugation axis, comprising casting in molds divided by at least one plane of division being radial to the centrifugation axis into annular mold parts, the precision castings when cast are united at radially inwardly pointing ends by a ring of solidified metal, with a plurality of mold cavities arranged at least substantially radially to the centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein said mold parts are brought to rotation in a rotation guide for each of the mold parts, and two mold parts together with corresponding rotation guides are brought relative to one another into a closed position for the casting operation and the solidification and into an open position for the removal of the precision castings, whereby movements of the mold parts into the closed and opened position are carried out in a direction parallel to the centrifugation axis and whereby the mold parts are reliably pressed together parallel to their radial plane of division.
An apparatus for the production of precision castings by centrifugation about a centrifugation axis, comprising molds divided by at least one plane of division being radial to the centrifugation axis into annular mold parts with mold cavities disposed at least substantially radially to the centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold parts are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another in an axial direction into a closed position for the casting operation and the solidification, and into an open position for the removal of the precision castings and comprising means for reliably pressing the mold parts together parallel to their at least one radial plane of division;
An apparatus for the production of precision castings by centrifugation about a centrifugation axis, comprising molds divided by at least one plane of division being radial to the centrifugation axis into annular mold parts with mold cavities disposed at least substantially radially to the centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold parts are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another in an axial direction into a closed position for the casting operation and the solidification, and into an open position for the removal of the precision castings and comprising means for reliably pressing the mold parts together parallel to their at least one radial plane of division, wherein the rotation guides are movable relative to one another between a closed position and a removal position, that the casting apparatus for casting the melt with the mold closed can be brought to the plane of division, and further comprising a manipulator system within the chamber for the removal of the precision castings, wherein the manipulator system has a radially acting gripping device by which the cohering precision castings are removable from the mold parts, wherein the gripping device comprises radially movable plungers.
An apparatus for the production of precision castings by centrifugation about a centrifugation axis, comprising molds divided by at least one plane of division being radial to the centrifugation axis into annular mold parts with mold cavities disposed at least substantially radially to the centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold parts are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another in an axial direction into a closed position for the casting operation and the solidification, and into an open position for the removal of the precision castings and comprising means for reliably pressing the mold parts together parallel to their at least one radial plane of division, wherein the manipulator system is provided on its outer circumference with a heat insulating body and a concentric heating body for heating the mold parts.
An apparatus for the production of precision castings by centrifugation about a centrifugation axis, comprising molds divided by at least one plane of division being radial to the centrifugation axis into annular mold parts with mold cavities disposed at least substantially radially to the centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold parts are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another in an axial direction into a closed position for the casting operation and the solidification, and into an open position for the removal of the precision castings and comprising means for reliably pressing the mold parts together parallel to their at least one radial plane of division, wherein the chamber consists of two chamber sections with a plane of separation, and that the one mold part is mounted in the one chamber and the other mold part in the other chamber section.
A method for the production of precision castings by centrifugation, comprising casting in molds divided by at least one plane of division into annular castings, with a plurality of mold cavities arranged at least substantially radially, to a centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein at least one mold part is brought to rotation in a rotation guide of its own, and two mold parts together with corresponding rotation guides are brought relative to one another into a closed position for the casting and the solidification and into an open position for removal of the precision castings, wherein the mold parts are heated up at such a rate that a temperature gradient diminishing radially from the inside out, of at least 40° C. is established.
A method for the production of precision castings by centrifugation, comprising casting in molds divided by at least one plane of division into annular castings, with a plurality of mold cavities arranged at least substantially radially to a centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein at least one mold part is brought to rotation in a rotation guide of its own, and two mold parts together with corresponding rotation guides are brought relative to one another into a closed position for the casting and the solidification and into an open position for the removal of the precision castings, wherein the mold parts are heated at such a rate that a temperature gradient diminishing radially from the inside out, of at least 200° C. is established.
An apparatus for the production of precision castings comprising molds divided by at least one plane of division into annular casting rings or casting forms or mold parts with mold cavities disposed at least substantially radially to a centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold parts are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another into a closed position for the casting operation and the solidification, and into an open position for the removal of the precision castings wherein the rotation guides are movable relative to one another between a closed position and a removal position, the casting apparatus for casting the melt with the mold closed can be brought to the plane of division, and further comprising a manipulator system within the chamber for the removal of the precision castings, wherein the manipulator system has a radially acting gripping device by which the cohering precision castings are removable from the mold parts wherein the gripping device comprises radially movable plungers.
An apparatus for the production of precision castings comprising molds divided by at least one plane of division into annular casting rings or casting forms or mold parts with mold cavities disposed at least substantially radially to a centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold parts are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another into a closed position for the casting operation and the solidification, and into at an open position for the removal of the precision castings wherein a manipulator system is provided on its outer circumference with a heat insulating body and a concentric heating body for heating the mold parts.
An apparatus for the production of precision castings comprising molds divided by at least one plane of division into annular casting rings or casting forms or mold parts with mold cavities disposed at least substantially radially to a centrifugation axis, the molds and a casting apparatus being contained in a closed chamber, wherein the mold pals are mounted in coaxial rotation guides and by means of these rotation guides can be brought relative to one another into a closed position for the casting operation and the solidification, and into an open position for the removal of the precision castings wherein the chamber consists of two chamber sections with a plane of separation, and that the one mold part is mounted in the one chamber section and the other mold part in the other chamber section.
Dependencies are inferred from the claim text.