Abstract: A method for recovery of moulding sand from a foundry sand mixture, which includes at least one proportion of moulding material fragments or loose moulding material grains, which accumulates when a cast part is demoulded from a casting mould as a result of the destruction of casting cores which have been formed from the moulding sand and an inorganic binder. The method includes: a) mixing the foundry sand mixture with cleaning water to form a slurry in order to dissolve the inorganic binder residues contained in the foundry sand mixture and optionally present additives from the moulding sand and to rinse them from the foundry sand mixture, and b) separating the cleaning water contaminated with the inorganic binder residues from the moulding sand contained in the slurry, wherein the process temperature of the slurry formed in step a) is 50 to 200° C.

Abstract: The invention provides a method for the cost-effective, resource-saving and highly productive recovery of moulding sand (F) from a foundry sand mixture (G), which comprises at least one proportion (FAB) of moulding material fragments or loose moulding material grains, which accumulates when a cast part is demoulded from a casting mould as a result of the destruction of casting cores or moulded parts representing the cast part which have been formed from the moulding sand (F) and an inorganic binder and optionally one or a plurality of additives to set the properties of the moulding material, wherein the method comprises the work steps a) mixing the foundry sand mixture (G) with cleaning water (RW) to form a slurry (S) in order to dissolve the inorganic binder residues (AB) contained in the foundry sand mixture (G) and optionally present additives from the moulding sand (F) and to rinse them out of the foundry sand mixture (G), and b) separating the cleaning water (RWK) contaminated with the inorganic bin

Abstract: A casting mold is pivoted about a horizontal pivot axis for casting cast parts in a casting machine. The casting mold has a lid and a reference side wall. A main plane is placed into the reference side wall. A tundish is coupled to the casting mold and the casting mold is then pivoted into a pouring-in position. The tundish filled with a molten metal portion is pivoted with the casting mold about the pivot axis, so that the molten metal flows into the casting mold. An angle ?1 enclosed between the main plane of the reference side wall and a bath level of the molten metal portion in the tundish is constantly <180° until the melt hits the bottom of the casting mold.

Abstract: A casting mould is pivoted about a horizontal pivot axis for casting cast parts in a casting machine. The casting mould has a lid and a reference side wall. A main plane is placed into the reference side wall. A tundish is coupled to the casting mould and the casting mould is then pivoted into a pouring-in position. The tundish filled with a molten metal portion is pivoted with the casting mould about the pivot axis, so that the molten metal flows into the casting mould. An angle ?1 enclosed between the main plane of the reference side wall and a bath level of the molten metal portion in the tundish is constantly <180° until the melt hits the bottom of the casting mould.

Abstract: In an X-ray tube comprising a metal housing portion and an electrode which can be connected to a positive high voltage with respect thereto and which is mounted on a ceramic insulator portion, a conical insulator portion is enclosed by a wall portion, at least the inner surface of which has an insulating effect. A screening sleeve which electrically screens the connection between the insulator portion and the electrode projects into a recess in the wall portion.

Abstract: A connecting element for chip carriers comprises a unitary pin frame of insulating material and a set of contact elements which are secured within the frame by injection molding. Each contact element comprises a wire segment having a terminal end projecting from the bottom of the frame to connect with a printed circuit board, the wire segment including a portion extending upward from the frame to serve as a spring leg for connection with a contact surface of a chip carrier. Connection may be made by soldering. The chip may be supported either on top of or hanging below the carrier. The spring legs press laterally into semicircular cutouts on the sides of the frame. Posts are provided on the frame for restricting the insertion depth of the contact elements. The posts may be formed by injection molding and may be located at miter-joint areas of pieces of the pin frame.

Abstract: In high-voltage vacuum-tubes, specifically X-ray tubes, comprising an electrode (anode) which carries a positive high voltage and which is connected to a conductive part (for example the metal tube envelope) via an insulator, flashover may occur at very high temperatures. In order to preclude such flashover a shielding electrode is arranged at a small distance from the insulator and has such a shape that the electric field strength at the location where the insulator is connected to the conductive part is reduced.

Abstract: The invention relates to a rotating-anode X-ray tube with increased continuous loadability. The anode comprises a plurality of concentrically disposed hollow cylindrical bodies, which are connected to each other at their end faces in such a way that a meander-shaped cross-section is obtained. The thermal resistance is then very high, while the radiant cooling is very good because of the large surface area. The energy which is radiated towards the interior can be absorbed by hollow cylindrical cooling surfaces which are connected to the tube envelope.

Abstract: X-ray tubes with a magnetic bearing either have the disadvantage that the anode must be at earth potential, so that an asymmetric high-voltage supply is required or that -- in the case of a symmetric high voltage -- a relatively wide air gap is necessary which requires a high driving force and a bearing which has a certain amount of drawbacks. The invention provides an insulator between the anode which is at the high-voltage potential and the rotor which is at the earth potential, so that the air-gap between the rotor and stator can be relatively small and an effective magnetic bearing is possible.

Abstract: A high-voltage, high vacuum electron discharge tube particularly an X-ray tube, having a metal envelope and an anode insulatingly mounted within the envelope. To avoid the deleterious effects of charge formed on the insulator surface, the insulator is formed with a recess of larger size than the anode diameter and the anode is secured to the insulator by mounting it at the region of the bottom of the recess.