摘要:
A method of forming at least a portion of an earth-boring tool using an electronic representation of at least one geometric feature of at least a component of an earth-boring tool stored in memory accessible by a processor operatively connected to a multi-axis positioning system, a direct metal deposition apparatus, and a material removal apparatus. The processor generates a deposition path for the direct metal deposition apparatus is based at least in part on the electronic representation of the at least one geometric feature of the at least a component of the earth-boring tool. The direct metal deposition tool is operated according to the generated deposition path to deposit metal material on an earth-boring tool component coupled to the multi-axis positioning system to at least partially form the at least one geometric feature of the earth-boring tool. Methods also include methods of repairing earth-boring tools.
摘要:
A method of forming at least a portion of an earth-boring tool using an electronic representation of at least one geometric feature of at least a component of an earth-boring tool stored in memory accessible by a processor operatively connected to a multi-axis positioning system, a direct metal deposition apparatus, and a material removal apparatus. The processor generates a deposition path for the direct metal deposition apparatus is based at least in part on the electronic representation of the at least one geometric feature of the at least a component of the earth-boring tool. The direct metal deposition tool is operated according to the generated deposition path to deposit metal material on an earth-boring tool component coupled to the multi-axis positioning system to at least partially form the at least one geometric feature of the earth-boring tool. Methods also include methods of repairing earth-boring tools.
摘要:
An apparatus for surface modification includes a support to hold a workpiece, a plasma source to generate a plasma in a localized region that is smaller than the workpiece, and a six-axis robot to manipulate relative positioning of the workpiece and the plasma source. The six-axis robot is coupled to at least one of the support and the plasma source.
摘要:
A method of forming an earth-boring tool includes forming a tool body including at least one inverted cutting element pocket, at least a portion of the at least one inverted cutting element pocket having a profile substantially matching a profile of an actual cutting element to be secured within a cutting element pocket to be formed by subsequently machining the at least one inverted cutting element pocket. Hardfacing material may be applied to portions of the tool body. The actual cutting element pocket is formed by removing material of the tool body within the at least one inverted cutting element pocket subsequent to applying the hardfacing material to portions of the tool body. A cutting element is affixed within the actual cutting element pocket.
摘要:
Systems and methods for selectively making non-spherical metal nanoparticles from a metal material. The metal target surface is ablated to create an ejecta event or plume containing nanoparticles moving away from the surface. Ablation may be caused by laser or electrostatic discharge. At least one electromagnetic field is placed in front of the solid target surface being ablated. The electromagnetic field manipulates at least a portion of the nanoparticles as they move away from the target surface through the electromagnetic field to create coral-shaped metal nanoparticles. The distance between the electromagnetic field and metal surface can be adjusted to yield metal nanoparticles of a desired size and/or shape.
摘要:
L'invention concerne un procédé (40) de réparation d'un rail amont (20) d'un carter (19) de turbine de turbomachine, ledit carter (19) comportant un corps de carter (21) s'étendant selon un axe longitudinal, ledit rail amont (20) comportant : - Une base (22) comportant une face, dite face radiale (27), s'étendant sensiblement radialement depuis le corps de carter (21) - Un plateau (23) comportant une face, dite face supérieure (25), s'étendant sensiblement selon l'axe longitudinal - Une portion de raccordement (24) entre la base (22) et le plateau (23), comportant une face concave (26) raccordant la face radiale (27) et la face supérieure (25), la face concave (26) et la face radiale (27) s'étendant de part et d'autre d'une arête (29), ledit procédé (40) comportant: - Une étape de recouvrement (41) d'une surface par du métal d'apport (33), ladite surface comportant la face supérieure (25) et la face concave (26), de sorte que ledit métal d'apport (33) s'étende sensiblement jusqu'à l'arête (29) - Une étape d'usinage (42) de la surface recouverte, d'une traite, dans la direction de la face radiale (27), et au moins jusqu'à l'arête (29), de sorte à reformer la surface.
摘要:
A method and apparatus for direct writing of single crystal super alloys and metals. The method including heating a substrate to a predetermined temperature below its melting point; using a laser to form a melt pool on a surface of the substrate, wherein the substrate is positioned on a base plate, and wherein the laser and the base plate are movable relative to each other, the laser being used for direct metal deposition; introducing a superalloy powder to the melt pool; and controlling the temperature of the melt pool to maintain a predetermined thermal gradient on a solid and liquid interface of the melt pool so as to form a single crystal deposit on the substrate. The apparatus configured to generally achieve the aforementioned method.
摘要:
A method of producing a nickel alloy clad steel pipe including: providing a hollow cylinder of nickel alloy cladding material and a hollow cylinder of steel, placing the hollow cylinder of the nickel alloy cladding material concentrically inside the hollow cylinder of steel or the hollow cylinder of the steel concentrically inside the hollow cylinder of nickel alloy cladding material to form a composite billet, heating the composite billet to 1121-1260°C, and extruding the composite billet, wherein the nickel alloy cladding material comprises 6.0-12.0 wt.% molybdenum, 19.0-27.0 wt.% chromium, 1.0 wt.% maximum tungsten, 0.6 wt.% maximum aluminum, 0.6 wt.% maximum titanium, 0.001-0.05 wt.% carbon, 0.001-0.035 wt.% nitrogen, 0.001-0.3 wt.% silicon, 1.0 wt.% maximum niobium, 2.5 wt.% maximum iron, 0.5 wt.% maximum manganese, 0.015 wt.% maximum phosphorous, 0.015 wt.% maximum sulfur, 1.0 wt.% maximum cobalt, and the balance nickel and may have a solidus temperature greater than 1312°C.
摘要:
A non-weldable workpiece may be affixed to a weldable workpiece by friction stirring the weldable workpiece to plasticize and extrude at least a portion thereof into a recess in the non-weldable workpiece. The weldable workpiece may then be welded to a body of a downhole tool to enable the welding of a non-weldable workpiece onto a body to increase the wear-resistance of the body.
摘要:
Improvements relating to a mechanically lined pipe A reelable mechanically lined pipe (MLP) having a metallic outer pipe (4, 42) and a metallic inner liner (6, 44), wherein the inner liner (6, 44) is secured to the outer pipe (4, 42) by one or more welds (46) extending longitudinally along the MLP. Longitudinal welds (46) are more efficient in pipeline manufacture, and in preventing 'wrinkling' of the inner liner (6, 44) when the MLP undergoes bending, in particular spooling the MLP onto and off a reel (10). Alternatively, any wrinkles formed are sufficiently minor or small that they can be reduced or removed once the MLP is installed on a seabed and after a hydrotesting step.