A method for using a vehicle-mounted wire saw for cutting an object (such as a wind turbine blade) includes coupling a wire saw having a continuous abrasive wire to a vehicle, engaging a wire tension to between about 100 PSI and about 5000 PSI, engaging a speed of an engine of the vehicle to between about 500 RPM and 4000 RPM, and cutting the object with the wire saw.

A multiplicity of wafers are simultaneously cut from an ingot by means of a structured sawing wire, wherein the structured sawing wire is guided through grooves of two wire guide rolls, and a bottom of each groove, on which the structured wire hears, has a curved groove bottom with a radius of curvature which, for each groove, is equal to or up to 1.5 times as large as the radius of the envelope of the structured wire which the structured wire has in the respective groove.

A spool of saw wire is disclosed. The saw wire is wound on the core of the spool (718). The saw wire is made of steel wire (406) wherein two or more crimp deformations are implemented. Each of said two or more crimp deformations has a crimp direction that is perpendicular to the longitudinal axis. Each of the crimp directions is different from the other crimp directions. The saw wire on the spool comprises a number of elastic rotations per unit length applied in the elastic rotation direction. The spool with saw wire can give excellent processability in the sawing process.

An element for serial configuration with an adjacent element in an abrasive tool, wherein the element is arranged to be mounted on a flexible drive carrier having a drive direction D. The element comprising at least one protruding member extending in a direction parallel to the drive direction D. The at least one protruding member being configured to overlap with the adjacent element at least when the flexible drive carrier has a straight configuration, and to reduce a width of a gap G formed between the element and the adjacent element when the flexible drive carrier is configured bent in an arcuate form.

A method is provided for removing an abandoned marine platform from a seabed. The platform extends below the seabed mud line. In order to remove the platform, a frame is provided having a perimeter that surrounds an open center. The frame is lowered over the platform wherein the platform occupies the open center portion. A movable cutter cable is fitted to the frame. At least a part of the cutter cable is positioned below the mud line. The cutter is moved relative to the frame to cut the platform below the mud line. Such movement can be a back and forth movement wherein the cutter cable moves in a first direction, stops and then moves in a second direction that is generally opposite the first direction. A lifting device can employ two vessels and two frames, each frame bridging from one vessel to the other. Winches on the vessel can be used to provide movement to the cutter cable. These same winches can take up cable slack as cutting moves from one platform member (e.g. leg, jacket leg, piling, etc) to another.

A spool of saw wire is disclosed. The saw wire is wound on the core of the spool (718). The saw wire is made of steel wire (406) wherein two or more crimp deformations are implemented. Each of said two or more crimp deformations has a crimp direction that is perpendicular to the longitudinal axis. Each of the crimp directions is different from the other crimp directions. The saw wire on the spool comprises a number of elastic rotations per unit length applied in the elastic rotation direction. The spool with saw wire can give excellent processability in the sawing process.

A method produces wafers from a cylindrical ingot of semiconductor material having an axis and an indexing notch in an outer surface of the cylindrical ingot and parallel to the axis. The method includes, in the order specified: (a) simultaneous removal of a multiplicity of sliced wafers from the cylindrical ingot by multi-wire slicing in the presence of a cutting agent; (b) etching of the sliced wafers with an alkaline etchant in an etching bath at a temperature of 20? C. to 50? C. and for a residence time, such that the material removed from each of the sliced wafers is less than 5/1000 of an initial wafer thickness; and (c) grinding of the etched wafers by simultaneous double-disk grinding using an annular abrasive covering.

A saw wire to cut hard and brittle materials is disclosed that comprises a steel wire that is provided with bends with segments in between. The average degree of bending of the bends is between 0.5% and 5%. Such a saw wire has a higher breaking load compared to saw wires having a conventional, higher average degree of bending. A method to measure the curvature is described as well as a process to make the inventive saw wire. The invention is applicable to any shaped saw wire for example a single crimped saw wire, a saw wire with at least two crimps in different planes, a saw wire with crimps rotating in a plane.

A marked abrasive wire including, on the cylindrical outer face thereof and between abrasive particles, a mark that is deformed as a function of the twisting of the abrasive wire, this mark extending longitudinally over at least 50% of the total length of the abrasive wire and having a reflectance Rm at a wavelength m,during the displacement of the wire and with the aid of a sensor sensitive to the reflectance of the outer face of the abrasive wire, the reading of at least one characteristic of the current shape of the mark that varies as a function of the twisting of the abrasive wire, andthe estimation of the twisting of the abrasive wire from the observed characteristic of the current shape of the mark and from a known value of this characteristic corresponding to a known twisting of the abrasive wire.

A plurality of bushings are coupled to one another via a series of bolts to provide an interlocking, articulating cutter. The bolts have a cylindrical end and a convex end. The convex ends are seated inside a concave socket coupled to the bushings. The cylindrical ends are coupled to a convex nut seated inside another concave socket coupled to an adjacent bushing. The convex ends of the bolts are configured to articulate inside the seat of the concave sockets. A washer may be placed between the bushings to provide a desired amount of flexibility and/or rigidity. The outer surface of the bushing comprises a cutting structure, such as a milled or clad cutting structure.