Abstract:
A tool for friction stir spot welding of high melting temperature materials, wherein the tool geometry includes a short pin and broad shoulder to enhance mixing of high temperature materials, and wherein the tool includes a superabrasive coating to thereby enable FSSW of high melting temperature materials .
Abstract:
A method of selecting a geometry for a friction stirring tool, said tool having a melting point that is higher than the workpiece material, wherein the tool is placed in motion against the workpiece to generate heat in the workpiece such that workpiece material is transported in surface features of the tool, and wherein surface features manage workpiece material flow around the tool, and wherein the tool can be used in friction stir processing, friction stir mixing, friction stir welding, and friction stir spot welding of high melting temperature materials or high softening temperature materials.
Abstract:
A system and method for friction stir processing of an industrial blade, wherein friction stir processing techniques are used to modify the properties of the industrial blade to thereby obtain superior edge retention and superior resistance to chipping.
Abstract:
A mandrel that provides a counter-force to the pressure exerted on the outside of a pipe or other arcuate surface by a friction stir welding tool, wherein the mandrel is expandable through the use of a wedge, and wherein the mandrel enables multiple friction stir welding heads to simultaneously perform welding on the arcuate surface.
Abstract:
Solid state processing is performed on a workpiece (16) by using a tool (10) capable of friction stir processing, friction stir mixing, or friction stir welding, wherein solid state processing modifies characteristics of a workpiece while substantially maintaining a solid phase in some embodiments, allowing some elements to pass through a liquid phase in other embodiments, and wherein modified characteristics of the material include, but are not limited to, microstructure, macrostructure, toughness, hardness, grain boundaries, grain size, the distribution of phases, ductility, superplasticity, change in nucleation site densities, compressibility, expandability, coefficient of friction, abrasion resistance, corrosion resistance, fatigue resistance, magnetic properties, strength, radiation absorption, and thermal conductivity.
Abstract:
The present invention relates to a method of joining segments of high melting temperature materials, that includes frictionally heating a first high melting temperature material and a second high melting temperature material wherein the first high melting temperature material and second high melting temperature material are welded together, without substantially changing the macrostructure and/or the microstructure of the first high melting temperature material and the second high melting temperature material, after application of a frictional force.
Abstract:
A center cutting or plunging end mill (10) or ball mill has one or more spiral grooves (18) and flutes (14) in the walls of a mill body (12) of cemented tungsten carbide. Each groove (18) includes polycrystalline diamond (30) or cubic boron nitride formed in situ along a leading edge (15) of each flute. Such a groove (18) extends across the cutting end of the mill so that the mill can be used for center cutting or plunging. The vein of diamond-like material may extend to the center of the mill body or may extend almost all of the way to the center, leaving an area of tungsten carbide exposed at the center of the mill body. A high temperature-high pressure press is used for forming the polycrystalline diamond-like veins in situ within the grooves in the mill.
Abstract:
The present invention is a system and method for repairing and/or joining together multiple reels of tubular, for example coiled tubing, using friction stir joining using a combination of a disposable or reusable mandrel to react the loads from friction stir joining, and a system for manipulating the coiled tubing so that friction stir joining may be performed while the coiled tubing is on a reel and/or at a field site. These and other embodiments of the present will become apparent to those skilled in the art from 'a consideration of the following detailed description taken in combination with the accompanying drawings.
Abstract:
A system and method for providing a mandrel that can be used to react the loads that are created by a friction stir joining tool as it performs friction stir joining of tubulars, the mandrel selected from a disposable mandrel, a partially disposable mandrel, a reusable mandrel, and a mandrel that is partially disposable and partially reusable.