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Eklavya Calla

Eklavya Calla, Rajasthan IN

Patent application numberDescriptionPublished
20100173087Apparatus, Systems, and Methods Involving Cold Spray Coating - A cold spray coating system comprising, a cold spray coating gun having a nozzle member operative to emit a stream of gas and granules of a coating material from a nozzle opening defined by the nozzle member such that the granules of the coating material impact and bond with a first region of a substrate, and a heat source member operative heat the first region of the substrate.07-08-2010
20110052824APPARATUS AND PROCESS FOR DEPOSITING COATINGS - A spray coating process and apparatus suitable for depositing coatings on surfaces of components, and particularly surfaces that are difficult to access with conventional cold spraying equipment. The process and apparatus employ a spray gun having a tubular body with a longitudinal axis and an exit at one end thereof. The body has a first portion defining a converging passage, a second portion defining a diverging passage that defines the exit of the body, and a throat portion therebetween that defines a throat between and connecting the converging and diverging passages. The gun is further equipped with at least one gas inlet for introducing a gas upstream of the converging passage, and at least one feedstock inlet for introducing a feedstock at or immediately upstream of the throat.03-03-2011
20110078896TURBINE ROTOR FABRICATION USING COLD SPRAYING - A method of manufacturing a rotor includes: (a) providing a core shaft; (b) cold spraying alloy powder particles onto the core shaft; (c) controlling the cold spraying to form sections at least of different shape along the core shaft to thereby form a near-net shape rotor; and (d) heat treating the near-net shape rotor to relieve stresses and to form diffusion bonding across interfaces between individual powder particles and the core shaft, and finish-shaping said near-net shape rotor.04-07-2011

Eklavya Calla, Bangalore IN

Patent application numberDescriptionPublished
20090301645SYSTEM AND METHOD OF JOINING COMPONENTS - A method of joining components includes applying a first coating to a first surface of a first component. The first coating is cold sprayed onto the first surface. The method also includes applying a second coating to a second surface of a second component. The second coating is cold sprayed onto the second surface. The first surface of the first component is adjoined to the second surface of the second component to form an interface zone. A liquid layer, including at least a portion of the first and second coatings is formed at the interface zone and then solidified to form a bond between the first and second components.12-10-2009
20100170937System and Method of Joining Metallic Parts Using Cold Spray Technique - Systems and methods are disclosed for joining two or more parts together via cold spraying. In one embodiment, a first part and second part may be aligned together to create a joint. The parts are joined by cold spraying a material on the first metal part and the second metal part to create a bond at the joint. A system is disclosed that includes a controller configured to control a cold spray gun to create a bond between a first metal part and second metal part07-08-2010
20100172789METHOD OF COATING WITH CRYO-MILLED NANO-GRAINED PARTICLES - A method of coating a substrate with cryo-milled, nano-grained particles includes forming a face-centered-cubic gamma matrix comprising nickel, cobalt, chromium, tungsten and molybdenum, adding a dispersion strengthening material to the gamma matrix to form a first mixture, cryo-milling the first mixture to form a second mixture to form a nano-grained structure, and cold spraying the second mixture onto a substrate to form a coating having a nano-grained structure.07-08-2010
20100326962WELDING CONTROL SYSTEM - In one embodiment, a system includes a welding controller configured to receive images from multiple observation points directed toward a deposition zone. The welding controller is also configured to control a parameter affecting deposition based on a differential analysis of the images.12-30-2010

Eklavya Calla, Karnataka IN

Patent application numberDescriptionPublished
20090324401ARTICLE HAVING A PROTECTIVE COATING AND METHODS - The article comprises a substrate having a first surface, a plurality of elements extending from the first surface, and a protective coating disposed between at least a portion of the plurality of elements, on at least a portion of the plurality of elements, or both. The plurality of elements are integral with the substrate. A method for applying a protective coating onto an article is also provided.12-31-2009