Abstract: The invention relates to a saw wire consisting essentially of a steel wire, an intermediate layer and a metallic binding phase into which diamond grains with an average diameter of 10 to 50 micrometers are inserted, characterized in that the metallic binding phase has a hardness of between 600 and 1100 HV 0.1 and consists of an inner layer and an outer layer which are arranged concentrically around the steel wire provided with the intermediate layer. The inner layer has a thickness of approximately between 10 and 25% of the average diamond grain diameter, while the thickness of the outer layer is such that the overall thickness of the metallic binding phase is 45-55% of the average diamond grain diameter and the diamond grains have an average interval of not more than 5 times their average diameter. Other fine particles with an average diameter of 1 to 6 micrometers are located between the diamond grains with an average diameter of 10 to 50 micrometers.

Abstract: A method for separating slices from a hard brittle workpiece involves subjecting the workpiece to an advancing movement and pressing it onto wires of a wire web of a wire saw, the wires being under a defined wire tension and making contact with the workpiece over a cutting depth along a cutting contour. The wires are lifted off the cutting contour an number of times while the wire tension is kept substantially unchanged, with the aid of rolls of a roll system. The roll system comprises at least one roll that is moved onto the wire web and back, the roll system comprising at least two moveable rolls which flank the workpiece. A wire saw is suitable for carrying out the method.

Abstract: A wire saw and method for cutting wafers from a workpiece, in which a saw wire is guided multiple times around wire-guiding rolls. The wire-guiding rolls have a rotatable bearing arrangement and two adjacent wire-guiding rolls delimit a saw gate. The saw has ceramic sliding-contact bearings for rotatably bearing the wire-guiding rolls.

Abstract: The invention relates to a saw wire consisting essentially of a steel wire, an intermediate layer and a metallic binding phase into which diamond grains with an average diameter of 10 to 50 micrometers are inserted, characterized in that the metallic binding phase has a hardness of between 600 and 1100 HV 0.1 and consists of an inner layer and an outer layer which are arranged concentrically around the steel wire provided with the intermediate layer. The inner layer has a thickness of approximately between 10 and 25% of the average diamond grain diameter, while the thickness of the outer layer is such that the overall thickness of the metallic binding phase is 45-55% of the average diamond grain diameter and the diamond grains have an average interval of not more than 5 times their average diameter. Other fine particles with an average diameter of 1 to 6 micrometers are located between the diamond grains with an average diameter of 10 to 50 micrometers.

Abstract: A component surface is coated with friction-increasing particles in a matrix, wherein the matrix comprises an upper layer and a lower layer, the lower layer being a metallic binder phase which is customary for friction-increasing fixing and the upper layer being a further metallic binder phase with a thickness of from 40 to 60% of the mean diameter of the particles.

Abstract: Connecting element with two joining surfaces which make possible a friction-enhancing, play-free reversible connecting of two workpieces to be joined, characterized by the fact that the connecting element displays a component surface lying outside the joining surfaces which is shaped in such a way that it displays an elastic or springy property which makes possible a reversible locking of the connecting element on one of the workpieces to be joined together.

Abstract: A method for separating slices from a hard brittle workpiece involves subjecting the workpiece to an advancing movement and pressing it onto wires of a wire web of a wire saw, the wires being under a defined wire tension and making contact with the workpiece over a cutting depth along a cutting contour. The wires are lifted off the cutting contour an number of times while the wire tension is kept substantially unchanged, with the aid of rolls of a roll system. The roll system comprises at least one roll that is moved onto the wire web and back, the roll system comprising at least two moveable rolls which flank the workpiece. A wire saw is suitable for carrying out the method.

Abstract: The invention relates to a process for producing a clothing wire which is suitable for fitting to an opening-cylinder base body, wherein a raw wire which is customarily used to produce clothing wire is processed on end to form a wire coil, in which the teeth of the wire are perpendicular to the coil axis and which has a diameter which corresponds to the diameter of the opening-cylinder base body or differs by at most ±5% from the diameter of the opening-cylinder base body, and the wire coil is pushed loosely onto a support device and, together with this device, is introduced into an electroplating unit, the process steps which are customarily used for the chemical deburring of a raw wire and the nickel-diamond coating of a clothed opening cylinder taking place in the electroplating unit, and the clothing wire being removed from the electroplating unit.

Abstract: A pulley has a wear-resistant dispersion coating on its running surface. This pulley is produced by an electrodeposition coating process without an external current (chemical deposition), and followed by a heat-treatment.

Abstract: A connecting element for the friction-increasing connection of workpieces which are to be joined, which is a thin resilient element which bears particles of a defined size at its surface, the particles being made from a material with a compressive and shear strength which exceeds that of the workpieces to be joined.

Abstract: A process for surface treatment and wear resistant coating of opening rollers for open end spinning of the type having a basic metallic body and a raw wire clothing, includes the steps of introducing the opening roller into a sealing bath in such a way that this sealing bath fills even the smallest voids between the raw wire and the basic body of the roller, rinsing off the opening roller clean on the outside, heat treating the opening roller, and subjecting the opening roller thus pretreated to deburring and antiwear coating in a conventional manner.