An electrodeposited wire for a saw wire includes a core wire containing tungsten or a tungsten alloy. The electrodeposited wire for a saw wire has a tensile strength of at least 4800 MPa. The electrodeposited wire for a saw wire has a straightness of at least 400 mm per 500 mm in length.

An abrasive article includes a substrate having an elongated body, a plurality of discrete tacking regions defining a discontinuous distribution of features overlying the substrate, where at least one discrete tacking region of the plurality of discrete tacking regions includes a metal material having a melting temperature not greater than 450? C., a plurality of discrete formations overlying the substrate and spaced apart from the plurality of discrete tacking regions, and a bonding layer overlying the substrate, plurality of discrete tacking regions, and plurality of discrete formations.

A diamond wire saw includes a steel wire, a molded sleeve, and a plurality of diamond bead bearing units. The molded sleeve surrounds and is bonded to the steel wire. The diamond bead bearing units are disposed around and bonded to the molded sleeve. Each of the diamond bead bearing units includes a tubular body and a functional layer that covers the tubular body and that contains a plurality of abrasive diamond particles. The molded sleeve is made of polyether-type thermoplastic polyurethane, and has a Shore hardness of greater than or equal to 70 D.

A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A surface roughness Ra of the metal wire is at most 0.15 m. A tensile strength of the metal wire is at least 3500 MPa. A diameter of the metal wire is at most 60 m.

A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A nickel plating layer is provided over the metal wire. An adhesion layer is provided at an interface between the metal wire and the nickel plating layer. The adhesion layer contains nickel and tungsten. A plurality of abrasive particles are provided at a surface of the nickel plating layer.

A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing one of tungsten and a tungsten alloy. A surface roughness Ra of the metal wire is at most 0.15 m. A diameter of the metal wire is at most 60 m.

A saw wire includes a metal wire containing rhenium-tungsten alloy. A rhenium content of the metal wire is at least 0.1 wt % and at most 10 wt % with respect to a total weight of rhenium and tungsten, an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa, a tensile strength of the metal wire is at least 3500 MPa, and a diameter of the metal wire is at most 60 m.

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.

A wire saw abnormality diagnosis device and a wire saw abnormality diagnosis method are provided. The abnormality diagnosis device includes: a diagnosis mode executer that executes a first diagnosis mode, a second diagnosis mode, and a third diagnosis mode before the cutting; a data group acquirer that acquires a first data group, a second data group, and a third data group for pluralities of data items indicating operating states of the wire saw; a deviation information calculator that calculates deviation information relating to deviations derived by comparing a first reference data group, a second reference data group, and a third reference data group with the first data group, the second data group, and the third data group for the pluralities of data items; and a determiner that determines presence or absence of an abnormality in the wire saw based on the calculated deviation information.

This wire saw machine having a dust collecting apparatus comprises a main roller for moving a wire by rotation; a first pulley system including a first upper dust collecting roller, a first lower dust collecting roller, and a first support roller; a second pulley system including a second upper dust collecting roller, a second lower dust collecting roller, and a second support roller; and a dust collecting unit which is provided under the first pulley system and the second pulley system to collect foreign substances that escape from the first pulley system and the second pulley system.