Abstract: The invention relates to an abrasive wire which comprises: abrasive particles (32) of which the 5% minimum diameter, denoted D5, is no lower than 5 ?m and of which the 95% maximum diameter, denoted D95, is less than 40 ?m; and a binder (34) which mechanically holds the abrasive particles on a central core, the thickness of said binder being between Tbo_min and Tbo_max, where Tbo_min and Tbo_max are provided by the following relationships Tbo_max=D5×(1?Emin/100) and Tho_min=D95×(1?Emax/100), where Emin and Emax are, respectively, greater than 50% and less than 90%. The binder (34) has a hardness of greater than 450 Hv on the Vickers scale and the number of abrasive particles (32) per millimeter of wire is less than 31 and greater than 1 over at least 1 km of the length of the wire.

Abstract: This process for manufacturing a closed loop of cutting wire comprises manufacturing a cutting wire comprising a central core extending continuously between two free ends. The central core having a tensile strength higher than 1400 MPa. The process includes welding the two free ends together to form the closed loop of cutting wire, in which: the manufacture of the cutting wire comprises making the central core from a material that is solid-state weldable. The welding is a solid-state welding operation comprising crushing, at a temperature below the melting point of the material of the central core, one of the free ends against the other of its free ends until the two ends have interpenetrated and formed a single uniform body of material.

Abstract: A device for metal coating of fibers, for example ceramic fibers, by a liquid process, the device including a crucible containing a liquid metal bath through which a fiber is drawn to be coated with the metal, and a cooling system positioned downstream from the metal bath to solidify the metal sheath created around the fiber by capillarity. The cooling system includes at least one nozzle for ejecting a compressed gas towards the coated fiber, and the system is sized such as to solidify the metal on the periphery of the coated fiber over a length of no more than 200 mm.

Abstract: A method of depositing a coating of a first metal alloy on a fiber extending in a main direction, including: a) heating a first mass of a first metal alloy above its melting temperature; and b) moving the fiber through the liquid first mass to be covered by a coating of a non-zero thickness over the entire periphery of the fiber; and prior to a): i) providing a second mass of a second metal alloy having a higher melting temperature than the first alloy; j) heating the second mass to above its melting temperature to be in its liquid state and then moving the fiber through the second alloy such that the second alloy is taken up under visco-capillary conditions and the fiber becomes covered over a portion by a coating of the second alloy of non-zero thickness; and k) cooling the second coating until it becomes solid.

Abstract: A method of coating ceramic material fibers in metal using a liquid technique and a device implementing the method. The method maintains a charge of molten metal in levitation in a substantially spherical shape inside a crucible and causes a tensioned ceramic material fiber to travel at a predetermined speed between a bottom pulley and a top pulley disposed on either side of the crucible such that a portion of fiber is immersed in the charge to be covered in a metal coating. During coating, the portion of fiber that is immersed in the charge is shifted as a function of the remaining volume of the charge such that the instantaneous height of fiber that is immersed in the charge remains substantially constant throughout the coating operation.

Abstract: The invention relates to a wire (1) which comprises a copper or pinchbeck core (2) surrounded by a pinchbeck coating consisting of a continuous pinchbeck sub-layer (3) in phase ? and a superficial layer (4) with a fractured pinchbeck structure in phase ? enabling the appearance of pinchbeck in phase ? in the fractures (5a). In this way, the electrical discharge machining speed is essentially increased.

Abstract: The electrode wire according to the invention comprises a brass core (1) covered with a ? phase brass coating (2) having a structure fragmented into blocks (2a) between which the core (1) is exposed. The blocks (2a) have a thickness (E2) with a narrow distribution and produce a coverage of the core (1) according to a coverage rate greater than 50%. This produces a regular fragmentation of the coating, which improves the finish state of the machined parts.

Abstract: A device for metal coating of fibers, for example ceramic fibers, by a liquid process, the device including a crucible containing a liquid metal bath through which a fiber is drawn to be coated with the metal, and a cooling system positioned downstream from the metal bath to solidify the metal sheath created around the fiber by capillarity. The cooling system includes at least one nozzle for ejecting a compressed gas towards the coated fiber, and the system is sized such as to solidify the metal on the periphery of the coated fiber over a length of no more than 200 mm.

Abstract: The electrode wire according to the invention comprises a brass core (1) covered with a ? phase brass coating (2) having a structure fragmented into blocks (2a) between which the core (1) is exposed. The blocks (2a) have a thickness (E2) with a narrow distribution and produce a coverage of the core (1) according to a coverage rate greater than 50%. This produces a regular fragmentation of the coating, which improves the finish state of the machined parts.

Abstract: The invention relates to a wire (1) which comprises a copper or pinchbeck core (2) surrounded by a pinchbeck coating consisting of a continuous pinchbeck sub-layer (3) in phase ? and a superficial layer (4) with a fractured pinchbeck structure in phase ? enabling the appearance of pinchbeck in phase ? in the fractures (5a). In this way, the electrical discharge machining speed is essentially increased.

Abstract: The present invention relates to a method of producing a metallic coating on an object (4) emerging from a bath of molten metal (5). The object can for example be a wire or a plate. A magnetic field is created near the point of exit of the object. The object leaves the bath of molten metal via an exit channel (3) containing a meniscus of the said bath of molten metal. The thickness of the metallic coating is controlled as a function of the second derivative of the curve of the meniscus (6) and of a capillary number Ca representing the ratio between the viscous forces of the molten metal and the forces of surface tension at the surface of the molten metal.