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| Number | Title | Issue Date |
| 7141754 | Method for repairing defects in a conductive substrate using welding A method for repairing defects in a substrate including the steps of placing a consumable filler slug in contact with the substrate in the vicinity of the defect; placing at least one electrically conductive cover sheet in contact with a portion of the consumable fi... | 11/28/2006 |
| 7126076 | Method for repairing defects in a metallic substrate using welding A method for repairing defects in a metallic substrate including the steps of placing a consumable filler slug in contact with the substrate in the vicinity of the defect; bringing a first electrode and a second electrode in contact with the consumable slug and appl... | 10/24/2006 |
| 7004374 | Process of making a shaped product A process of making a shaped product consisting of aluminium or an aluminium alloy comprising the steps of producing an intermediate object by extrusion or rolling and having at least one flat surface, coating the at least one flat surface with a brazing flux retain... | 02/28/2006 |
| 6881919 | Powder feed nozzle for laser welding A powder feed nozzle for laser welding applications including a multiple outlet nozzle tip for focusing a discharged powder stream. The multiple outlet nozzle tip disperses multiple outlet streams and includes a powder discharge outlet and at least one focus gas dis... | 04/19/2005 |
| 6610959 | Single-wire arc spray apparatus and methods of using same Material droplet generator systems utilizing single-wire arc spray apparatus and methods are provided. In some embodiments, the apparatus include a single consumable, first wire electrode fed through a gas nozzle and a non-consumable, second electrode out... | 08/26/2003 |
| 6475647 | Protective coating system for high temperature stainless steel A method for protecting high temperature stainless steel from coking and corrosion at elevated temperatures in corrosive environments, such as during ethylene production by pyrolysis of hydrocarbons or the reduction of oxide ores, by coating the stainless... | 11/05/2002 |
| 6469271 | Method and apparatus for refurbishing valves A method and apparatus for in situ refurbishment of valve seats are disclosed in which a worn valve seat is initially ground to a flat surface, a buildup of weld metal is deposited on the flat surface, and the weld buildup is machined to the final dimensi... | 10/22/2002 |
| 6441338 | Rapid manufacturing of steel rule dies and other 3-dimensional products, apparatus, process and products A model building apparatus includes a beam delivery module and a stage movable in the X, Y and Z directions. A feedstock holding mechanism for the model building apparatus enables the model building apparatus to corrugate the feedstock into a latticed lay... | 08/27/2002 |
| 6307178 | Method for welding shaped bodies made of carburized heat-resistant steel The invention relates to a method for welding shaped bodies of carburized heat-resistant austenitic steel. The inventive method is characterized in that carburized steel parts to be welded are preheated to temperatures of 700 to 900 degrees Celsius before... | 10/23/2001 |
| 6258402 | Method for repairing spray-formed steel tooling A machine tool or die that is fabricated from thermally spray-formed steel is easily repaired by cleaning, roughing and covering the surface to be repaired by a cold-spray layer of metal and then forming a weldment by conventional electric welding process... | 07/10/2001 |
| 6117493 | Bearing with improved wear resistance and method for making same A steel bearing member having an erosion resistant surface and a method of making the same is disclosed. The steel bearing member comprising a bearing substrate, a first overlay of hardbanding material having sintered cemented metal carbide pellets in ste... | 09/12/2000 |
| 5996219 | Method for embedding electric or optical components in high-temperature metals This invention relates to a method of embedding electric components or optical components, such as sensors, in a high-temperature metal and the embedded products produced by the method. In the preferred embodiment the components are embedded on a substrat... | 12/07/1999 |
| 5958521 | Method of depositing a thermally sprayed coating that is graded between being machinable and being wear resistant A method of thermally spraying a coating onto the interior of a cylindrical surface which coating is graded between enhanced optimal machinability and enhanced wear resistance. The method comprises the steps of; (a) preparing a cylindrical bore surface of... | 09/28/1999 |
| 5942289 | Hardfacing a surface utilizing a method and apparatus having a chill block A hardfacing apparatus includes a deposition head including a heat source, a hardfacing material source, and a chill block having a chill block surface. The deposition head is positioned at a location so as to deposit a mass of the hardfacing material ont... | 08/24/1999 |
| 5831241 | Optimized welding technique for NiMoV rotors for high temperature applications A welding process of repairing a ferrous NiMoV low alloy steel turbine component. A first and a second layer of weld material are welded to the turbine component at electrical current levels chosen so as to prevent a substantial decrease and a substantial... | 11/03/1998 |
| 5786562 | Method and device for producing three-dimensional bodies Method to create three-dimensional bodies (30), for example models, formers, finished products, semi-finished products, among others, from a medium (12) consisting of particles, by producing a number of cross-sectional layers (25), each and every one repr... | 07/28/1998 |
| 5704765 | High chromium content welding material to improve resistance of corrosion method and device A low pressure steam turbine and generator low alloy steel disc rotors with extended useful life properties. A ring member of the disc rotor has disposed on it multiple weld layers of ferrous material, forming a weld region. The ring member is made of a l... | 01/06/1998 |
| 5674419 | Method for weld repairing of structures in nuclear reactors Disclosed is a highly reliable weld repairing method to repair a crack defect in structures and apparatus inside pressure vessels of nuclear reactors, while preventing generation of new crack defects in the structures and apparatus during the repairing. T... | 10/07/1997 |
| 5591363 | Optimized welding technique for NiMoV rotors for high temperature applications A process of depositing layers of weld metal onto a ferrous NiMoV low alloy steel turbine component. During a deposition of a first layer of weld metal, low levels of amperage are used to prevent a dramatic increase in a level of hardness of a heat affect... | 01/07/1997 |
| 5449874 | Method of welding a soft-iron guide band to a steel projectile body A method of welding a soft-iron guide band on a steel projectile body includes the steps of applying a layer of nickel or a nickel alloy to the projectile body and applying a soft-iron wire as the guide band to the layer by electric protective gas welding... | 09/12/1995 |
| 5399836 | Welding apparatus and method for buttering an end face surrounding a circular opening in a work-piece An end face of a work-piece having a circular opening is welded upon by apparatus which includes a stationary post mounted by a mounting assembly to the work-piece with its longitudinal axis coincident with the axis of the opening. A rotating assembly inc... | 03/21/1995 |
| 5258600 | Process for welding thermally and/or mechanically treated metal conduits A process for welding mechanically and/or thermally treated alloy pipes to achieve the full tensile capacity of the unwelded base alloy across the welded pipe joint is disclosed. The process comprises welding the pipes together at the beveled pipe ends to... | 11/02/1993 |
| 5233149 | Reprocessing weld and method A fatigue-resistant welded joint between structural members and process for making same, as for an automotive bracket, are shown. A filler metal-containing reprocessing weld is applied over at least part of a toe of a small primary structural weld at the ... | 08/03/1993 |
| 5147996 | Tool joint A method is provided for applying grooved bands of hardsurfacing on a tool joint for earth boring drill pipe. The hardfacing of the tool joint has tungsten carbide granules in an alloy steel matrix. The tool joint is rotated and an arc between an electrod... | 09/15/1992 |
| 5010225 | Tool joint and method of hardfacing same A method is provided for applying grooved bands of hardsurfacing on a tool joint for earth boring drill pipe. The hardfacing of the tool joint has tungsten carbide granules in an alloy steel matrix. The tool joint is rotated and an arc between an electrod... | 04/23/1991 |
| 4896814 | Method of welding inside a groove machined in a solid steel part, and utilization of the method for repairing a cracked rotor A method of welding in a groove (1) machined in a solid alloyed steel part, characterized in that bottom passes (2) are performed and then each wall (11, 13) of the groove (1) is faced with low alloy steel filler material, heat treatment is performed so a... | 01/30/1990 |
| 4881678 | Process for the remote-controlled semi-automatic welding of two rotationally symmetrical components Welding is controlled from a control station (14) located at some distance from the welding zone. Before the start of a welding pass, the welding parameters are set by an operator, to whom the values to be given to the parameters as a function of the type... | 11/21/1989 |
| 4869417 | Automatic build-up welding machine for track rollers An automatic build-up welding machine for repair of workpieces such as track rollers. The machine requires no operator in charge during the welding operation. The apparatus comprises a device including a pair of guides, and a switch box connected adjustab... | 09/26/1989 |
| 4857694 | Method and apparatus for automatic vapor cooling when shape melting a component A method and apparatus for automatically cooling a workpiece being manufactured by shape melting whereby a gas/liquid coolant mixture is pumped onto the external surface of the part to be cooled. Temperature and pressure data is fed to a computer control ... | 08/15/1989 |
| 4857693 | Method of forming stub ends A method of forming stub ends used for joining pipes together by depositing successive layers of weld metal on the outer circumference of a rotating length of pipe. Initial layers having a common forward edge but of decreasing width are deposited to provi... | 08/15/1989 |
| 4842186 | Method and apparatus for building a workpiece by deposit welding A method and apparatus for building a workpiece of a desired geometry by deposit welding with a reusable preform. The reusable preform forms, supports, and cools the deposited molten weld material puddle while the weld material is solidifying thereby elim... | 06/27/1989 |
| 4837417 | Method of hard-facing a metal surface A method of hard-facing is disclosed in which matrix metal is melted on the surface of a metal base member being hard-faced along with a portion of the metal base member by a non-consumable electrode moving over the matrix metal. The arc between the elect... | 06/06/1989 |
| 4807800 | Method for manufacturing thin-walled hollow bodies of concentric metal layers A method for manufacturing thin-walled hollow bodies comprising concentric layers forming thin-walled structural parts of chemical installations subjected to stress at high temperatures, thereby replacing non-layered pipes of single-metal materials. Due t... | 02/28/1989 |
| 4805826 | Slag removing apparatus for pad-welding machine Described herein is a slag removing apparatus suitable for use on a padi-welding machine, which permits automation of the pad-welding operation and which essentially includes: a C-shaped roller holder located beneath a movable welding torch and provided w... | 02/21/1989 |
| 4798930 | Process for producing a weld-built member Built-up or facing material is melted in an electric arc between a parent member and at least one electrode movable relative to the parent member. As the electrode moves, at least one welding parameter is varied in a predetermined zone of movement in orde... | 01/17/1989 |
| 4782206 | Method and apparatus for controlling weld bead shape to eliminate microfissure defects when shape melting austenitic materials A method and apparatus for eliminating microfissure defects in shape melted austenitic material components by closely controlling the deposited weld bead shape to a geometry where the underbead shape has no sharp discontinuties. Oscillation of the welding... | 11/01/1988 |
| 4745254 | Method of hard-facing a metal surface A method of hard-facing is disclosed in which matrix metal is melted on the surface of a metal base member being hard-faced along with a portion of the metal base member by a non-consumable electrode moving over the matrix metal. The arc between the elect... | 05/17/1988 |
| 4671448 | Method of preparing structural components having a symmetrically curved wall by buildup welding In a method of preparing from weld material a component having a curvature which is symmetrical in rotation, difficulties arise, more particularly in the case of large and heavy components, in guiding the treatment zone. The treatment zone remains in a ho... | 06/09/1987 |
| 4624860 | Method of applying a coating to a metal substrate using brazing material and flux A method for bonding a coating material to a substrate wherein the properties of the substrate material need to be precisely controlled which comprises providing a substrate which is to be coated, supplying a brazing material adapted to come into contact ... | 11/25/1986 |
| 4624406 | Overlay welding method An austenitic stainless steel welded metal layer having the given composition containing delta-ferrite phase is previously overlay welded as an intermediate layer prior to overlay welding of a surface layer of stainless steel, nickel alloy or the like on ... | 11/25/1986 |
