Apparatus and method for screeding/rodding concrete (and method of manufacture of the same), comprising: a rigid base member configured to comprise a tight tolerance of levelness along its length, and a mounting structure for securely attaching a working layer; attachment of a preferably fiberglass working layer comprising a durable material deposited on the rigid base member and capable of being finished to a smooth surface suitable for advantageous direct contact with poured wet concrete.

A heavy-duty vehicle maintenance tool applicable to mount or remove a component from a gearbox has a cylindrical shape with a predetermined extension along a central axis. The tool further including a cylindrical wall enclosing an inner cylindrical cavity and connecting an open first end and a closed second end. The tool has a first end arranged to be placed in contact with a corresponding surface on a component to be mounted and a second end arranged to be subjected to an external force in order to mount or remove the component. The second end includes an internal reinforcing lattice structure within the cavity. The tool is a lightweight, one-piece thermoplastic component and is produced using an additive manufacturing process.

A method for manufacturing a tool including assembling a stack-up that includes a plurality of precured composite laminates, the stack-up having an engagement surface, wherein each precured composite laminate of the plurality of precured composite laminates is flexible, and wherein an adhesive is positioned between adjacent precured composite laminates of the plurality of precured composite laminates, and placing the engagement surface of the stack-up onto a target surface of a substrate.

A method for producing abrasive particles includes: i) providing a starting mixture which contains at least aluminum hydroxide and which can be converted at least into aluminum oxide by a heat treatment, ii) extruding the starting mixture in order to form an extrudate, iii) separating the extrudate into intermediate particles, and iv) heat-treating the intermediate particles. The intermediate particles are converted into abrasive particles which contain aluminum oxide, and the starting mixture is pressed through at least one nozzle element with a plurality of substantially parallel nozzle channels. The nozzle channels are preferably arranged in a mutually spaced manner over the course of the extrusion process, and the extrudate has a spiral or hollow cylindrical shape at least in some sections.

A method for sealing gaps in a component including generating vapor from a liquid; directing the vapor to an exposed surface of the component, wherein the component includes a plurality of layers of an extrudate and gaps between the plurality of layers and wherein the extrudate includes an outer portion; softening the outer portion of the extrudate at the exposed surface; and filling the gaps with softened outer portion of the extrudate. An apparatus includes a heating chamber including at least one first heating element; a vapor chamber coupled to the heating chamber; a pressure regulator operatively coupled to the vapor chamber; and a nozzle coupled to the vapor chamber by a duct.

A composite lay up tool comprising a metal faceplate (12) on a support member (13), wherein the faceplate has been formed by cold-gas dynamic spraying of particles of the metal onto a substrate and wherein the support member is compatible with the faceplate and comprises a casting of a ceramic composition. A process for forming the tool is disclosed. In one aspect, a castable ceramic composition comprises a binder and an aggregate component mixable with water to form a slurry ready for casting, wherein the aggregate component is one of, or a mixture of, fused silica and a particulate metal alloy, and the binder and aggregate component are present in the proportions 10-50 wt % and 90-50 wt % based on the dry weight of the composition. Also disclosed is a process for producing a faceplate for a lay up tool, which process comprises cold-gas dynamic spraying of particles of a nickel-iron alloy onto a substrate to form a faceplate of the nickel-iron alloy on the substrate, the faceplate being of a thickness in the range 2 to 10 mm. Further disclosed is a process for depositing a metal on a faceplate of a lay up tool in which the faceplate is formed of a nickel-iron alloy, which process comprises preparing an area of a surface of the faceplate to effect cleaning and conditioning of the area to accept and adhere to cold-gas dynamic sprayed particles, and cold-gas dynamic spraying particles of the metal onto the cleaned and conditioned area, wherein the metal is a nickel-iron alloy selected to be compatible with the faceplate.

A method and apparatus for forming a tool. A layer is conformed to a reference part. The layer having an adhesive side that faces outward from the reference part and a release side that faces the reference part. A plurality of prefabricated sections is adhered to the layer. A plurality of gaps is filled between the plurality of prefabricated sections with a joining material.

A method of manufacturing a whipstock assembly includes cutting a shape of a body plate from a flat metal plate; forming a concave surface in the body plate; and attaching a body core to the body plate in a mold.

Hardfacing materials include a polymer matrix material and particles of hard material embedded within and dispersed throughout the polymer matrix material. Earth-boring tools include a tool body and a hardfacing material on at least a portion of a surface of the body, wherein the hardfacing material includes a polymer matrix material and particles of hard material embedded within and dispersed throughout the polymer matrix material. Methods of applying hardfacing material to an earth-boring tool comprise mixing hard particles with a polymer precursor material to form a paste, applying the paste to a surface of an earth-boring tool, and curing the polymer precursor material to form a hardfacing material on the surface of the earth-boring tool.

Apparatus and method for screeding/rodding concrete (and method of manufacture of the same), comprising: a rigid base member configured to comprise a tight tolerance of levelness along its length, and a mounting structure for securely attaching a working layer; attachment of a preferably fiberglass working layer comprising a durable material deposited on the rigid base member and capable of being finished to a smooth surface suitable for advantageous direct contact with poured wet concrete.