Abstract:
One embodiment includes a method to regenerate a component (10). The method includes additively manufacturing a component (10) to have voids greater than 0 percent but less than approximately 15 percent in a near finished shape. The component (10) is encased in a shell mold (22). The shell mold (22) is cured. The encased component (10) is placed in a furnace and the component (10) is melted. The component (10) is solidified in the shell mold (22). The shell mold (22) is removed from the solidified component (10).
Abstract:
The problem addressed by the present invention is providing a grain-oriented electrical steel sheet wherein both core loss and noise are reduced. The present invention is an electrical steel sheet wherein regions with locally high lattice defect density are formed on the surface of or within the steel sheet and magnetic domains are refined, said electric steel sheet being characterized by the hardness of the high lattice defect density regions as measured by a micro Vickers hardness meter being identical to or less than the hardness of other regions.
Abstract:
Verfahren zur Reparatur eines Gasturbinenbauteils (1), bei dem ein Teilstück des Gasturbinenbauteils (1) an einem Trennbereich abgetrennt wird und ein Ersatzstück mit dem Gasturbinenbauteil (1) verschweißt wird, wobei die Querschnittsfläche des Gasturbinenbauteils (1) an dem Trennbereich vor dem Abtrennen des Teilstücks durch Aufbringen von zusätzlichem Material in einem thermischen Spritzverfahren erhöht wird.
Abstract:
A method and apparatus for assembly of small structures is disclosed. The present invention discloses electron beams created from one or more nanotips in an array operated in a field emission mode that can be controlled to apply heat to very well defined spots. The multiple electron beams may be generated and deflected and applied to electron beam heating and welding applications.
Abstract:
The present application pertains to unconventional sputter target/backing plate assemblies (10) for high power operation and to the low temperature method of making them. The sputter target/backing plate assemblies (10) comprise targets (12) and backing plates (16) having dissimilar thermal coefficients of expansion. Although the consolidated targets (12) and backing plates (16) have dissimilar thermal coefficients of expansion, they are able to be bonded together and used at high sputtering temperatures without bowing or bending and are able to utilize backing plates (16) normally associated with a specified target metal. In the method of making, a plurality of male projections (16) are formed in one member of the assembly (10) with a plurality of corresponding female grooves (32) formed in the other surface. The assembly (10) is bonded by conventional techniques around an annular zone that surrounds the male (26) and female portions (32). The assembly (10) is then pressure consolidated at low temperature so that the projections are force fit into the female recesses.
Abstract:
The invention relates to a method for producing a cage for antifriction bearings which consists of two lateral rings (1) that are interlinked via webs, said cage being rolled to a cylindrical or cone-shaped form from a planar strip once the pockets are punched and the cage is welded together at its joints (14, 15, 16). The inventive method is characterized in that the cage is subjected to an additional melt-welding in the area of the weld seam (4) after the joint welding, thereby substantially reducing the notch effect of the weld seam (13) while increasing the fatigue strength of the cage.
Abstract:
Method of producing metal sheets or strips by tandem rolling a metal sheet or strip with at least one pair of work rolls, at least one of which being a textured work roll in order to transfer the surface pattern of the textured work roll to the surface of said sheet or strip, characterized in that said pattern consists in regular deterministic bidimensional pattern in the form of unit cells of spots wherein each spot has the form of a crater with a rim around it, said spot being obtained through an electron beam irradiation.
Abstract:
This disclosure describes an improved method of electron beam ("EB") welding utilizing a collection pocket (118). The method includes providing a first surface (110,146) and a second surface (100,132,140,144), forming a collection pocket (118) in at least one of the first surface (110,146) and the second surface (100,132,140,144), coupling the first surface to the second surface at a joining location (136,138), and EB welding the first surface (110,146) and the second surface (100,132,140,144) to each other at the joining location (136,138). The collection pocket (118) captures and contains excess weld material to prevent the excess material from escaping the joining location (136,138), and also reduces an amount of wall thickness required for EB welding. A method of reconditioning gas turbine components is also disclosed.