Abstract: A welding system and method is provided for welding heavy plate, where the method and device include using a laser which directs a beam to a first weld puddle to weld at least a portion of a work piece and a welding torch to direct a first welding electrode to the first weld puddle while the beam is being directed to the weld puddle. The welding torch deposits the first welding electrode to create a first weld bead. A flux nozzle is employed to deposit a welding flux onto the weld bead, and a submerged arc welding torch is used to direct a submerged arc filler metal to the weld bead to create a second weld bead through a submerged arc welding process, where the submerged arc welding process melts a portion of the first weld bead to consume the melted portion into the second weld bead.

Abstract: The invention described herein generally pertains to a system and method related to adjusting at least one of an arc current for a welding operation, an arc voltage for a welding operation, a wire feed speed for a welding operation, or a height of a torch that performs the welding operation. In particular, a parameter can be updated based upon, for instance, a user input, and the arc current, arc voltage, wire feed speed, or the height of the torch can be calibrated to perform the welding operation. Specifically, while a parameter is being adjusted or transitioned to the setting received via user input, the height of the torch and/or at least one of the arc current level, the arc voltage, the wire feed speed is maintained until the setting is achieved for the parameter. Once the parameter is at the setting, a second arc current level, a second arc voltage, a second wire feed speed, or second height for the torch is implemented to perform the welding operation.

Abstract: A welding head is provided. The welding head includes a bracket and a plurality of blocks coupled to the bracket. Each of the plurality of blocks has a contact tip. The contact tips are adapted to receive an electrode. Further, at least one of the plurality of blocks is capable of variable positioning relative to the bracket.

Abstract: A system and method for submerged arc metal powder welds includes modular programmable control of: a) a weld torch, and the position of the welding wire(s) from the torch traveling within a weld cavity, b) the rate of metal powder and welding flux added to the weld cavity ahead of the weld torch, c) the matching ratio between of metal powder and welding wire within the weld cavity, and d) a square wave welding torch power supply. An embodiment includes a controlled column and boom manipulator with up to six axes of motion and controlled motorized slide assemblies for single or multi-pass welds. A method of use is also disclosed.

Abstract: In an abrasion resistant welded steel pipe, each of a base material and a weld metal contains specific amounts of chemical composition. The base material of the abrasion resistant welded steel pipe has a Vickers hardness within the range of 150 to 250, and the weld metal has a Vickers hardness within the range of 230 to 350. A weld heat affected zone in the abrasion resistant welded steel pipe has a Vickers hardness within the range of 150 to 350. In the weld metal, the dispersion density of a sulfide having an aspect ratio of 5 or more and containing at least one selected from Fe, Mn, and Ti is 10 grains/mm2 or less. The abrasion resistant welded steel pipe that can be produced at high productivity and low cost with no reduction in weld crack resistance can be provided.

Abstract: A submerged arc welding system includes a robot having a first arm connected to a second arm, and at least one wire supply. A welding torch is connected to a first end of the second arm of the robot. A wire motor is mounted to a second end of the second arm of the robot. The wire motor moves wire from the wire supply along a wire path to the welding torch. The system further includes a flux supply and a flux delivery system configured to move flux from the flux supply along a flux path to the welding torch.

Abstract: An automated assembly, system and method for a narrow-gap Electroslag-welded moment connection welded between horizontal beam to vertical column flanges includes vertical column doubler plates affixed to the column web and horizontal beam doubler plates affixed to the beam web with alignment of the respective webs/doubler plates to carry the moment load through the vertical support columns. An embodiment includes a radius in each horizontal beam doubler plate. The assembly, system and method are readily applicable to overdesign moment load factors.

Abstract: A DC balanced square wave power source, controlled in a constant voltage mode, for ESW and ESW-NG welding systems and methods can be matched with variable speed wire electrode feeders, multiple guide tubes, articulated air-cooled cooper welding shoes, and multiple pass ESW welding systems, thus gaining the following advantages, namely, controlling weld bead shape, reducing base metal dilution, reducing total heat input into the parent material, and reduction or elimination of any DC magnetic field in the weld cavity.

Abstract: A method for cladding of superalloy materials. A layer of powder (14) disposed over a superalloy substrate (12) is heated with an energy beam (16) to form a layer of superalloy cladding (10) and an overlying layer of slag (18). A filler material (44) of nickel, nickel-chromium or nickel-chromium-cobalt wire or strip is also added to the melt pool to combine with the melted powder via a submerged arc or electroslag heating process to give the superalloy cladding the composition of a desired superalloy material. The layer of powder includes a layer of powdered flux material (22) over a layer of powdered metal (20), or the flux and metal powders may be mixed together (36).

Abstract: Opposing, paired and positionally adjustable serrated water-cooled copper welding shoes, run-off tabs, and sumps affixed at the junction of workpieces to be welded with an Electroslag or Electrogas welding system. The serrated water-cooled copper welding shoes are capable of being controlled between 150 to 200 degrees Fahrenheit, and the welding flux plating over the serrations reduces over-chill to the molten weld puddle while also reducing the amount of heat that the serrated water-cooled shoe removes from the surface of the work piece. This reduction in base material heat allows the welding operator to reduce the weld voltage to dramatically decrease the size of the weld nugget and, in turn, to decrease the heat input from the welding process into the work piece. These significant thermo-dynamic improvements to the Electroslag or Electrogas welding process provide a smaller weld grain structure and much stronger bond in the weld fusion zone.

Abstract: An in-liquid plasma electrode according to the present invention is an in-liquid plasma electrode for generating plasma in a liquid and has an electrically conductive member having an electric discharge end surface in contact with the liquid, and an electrically insulating member covering an outer periphery of the conductive member at least except the electric discharge end surface. Preferably, d and x satisfy ?2d?x?2d, where d is a length of a minor axis of the cross section when a conductive end portion of the electrically conductive member having the electric discharge end surface has an approximately circular cross section, or d is a length of a short side of the cross section when the conductive end portion has an approximately rectangular cross section, and x is a distance from a reference plane to a plane containing the electric discharge end surface when the reference plane is an end surface of the electrically insulating member that is approximately parallel with the electric discharge end surface.

Abstract: A submerged arc welding system includes a robot having a first arm connected to a second arm, and at least one wire supply. A welding torch is connected to a first end of the second arm of the robot. A wire motor is mounted to a second end of the second arm of the robot. The wire motor moves wire from the wire supply along a wire path to the welding torch. The system further includes a flux supply and a flux delivery system configured to move flux from the flux supply along a flux path to the welding torch.

Abstract: A weld metal contains Cr: 28.0% to 31.5% by mass, Fe: 7.0% to 11.0% by mass, Nb and Ta: 1.5% to 2.5% by mass in total, C: 0.015% to 0.040% by mass, Mn: 0.5% to 4.0% by mass, N: 0.005% to 0.080% by mass, Si: 0.70% by mass or less (and more than 0%), Al: 0.50% by mass or less, Ti: 0.50% by mass or less, Mo: 0.50% by mass or less, Cu: 0.50% by mass or less, B: 0.0010% by mass or less, Zr: 0.0010% by mass or less, Co: 0.10% by mass or less, P: 0.015% by mass or less, and S: 0.015% by mass or less, the remainder being Ni and incidental impurities.

Abstract: A submerged arc welding apparatus of the present invention includes: a flux receiver for receiving and holding flux in an area formed by itself and a workpiece inside thereof when abutting against the workpiece on the open side; a flux feeder for supplying flux to the flux receiver; a welding torch for supplying a welding wire toward the workpiece with the tip disposed in the area where the flux is held; and a moving mechanism for moving the flux receiver and the welding torch along the direction of a welding line of the workpiece with the flux receiver abutting against the workpiece. A submerged arc welding method of the present invention includes: performing welding by opposing the welding torch to the workpiece and by moving the welding torch along the direction of the welding line with flux held in an area formed between the workpiece and the welding torch.

Abstract: Technologies related to electroslag welding are generally disclosed.

Abstract: A system and method of multi-pass computer controlled narrow-gap Electroslag welding allowing a faster vertical rate of rise at a much lower voltage, and that includes welding selected narrow-gaps within segments of a weld cavity between heavy plate steel workpieces and attendant control of the heat transfer depth penetration from the weld puddle to the workpieces according to a pre-determined profile resulting in a smaller heat affected zone and smaller grain structure in the weld metal.

Abstract: A method of welding two members together wherein welding material is melted in an electrically heated molten slag, and forms a pool of molten welding material beneath the molten slag. The end surfaces of the two members are in contact with the molten weld material and are melted to bond with the weld material.

Abstract: A system and method of welding is provided where a first welding power supply provides a first welding waveform to a strip electrode for welding a work piece and a second welding power supply provides a second welding waveform to at least one curtain electrode for welding the work piece. The at least one curtain electrode is positioned adjacent to a side of said strip electrode during welding.

Abstract: An alloy comprising about 0.5 weight percent to about 2 weight percent carbon, about 15 weight percent to about 30 weight percent chromium, about 4 weight percent to about 12 weight percent nickel, up to about 3 weight percent manganese, up to about 2.5 weight percent silicon, up to about 1 weight percent zirconium, up to about 3 weight percent molybdenum, up to about 3 weight percent tungsten, up to about 0.5 weight percent boron, up to about 0.5 weight percent impurities, and iron.

Abstract: A DC balanced square wave power source, controlled in a constant voltage mode, for ESW and ESW-NG welding systems and methods can be matched with variable speed wire electrode feeders, multiple guide tubes, articulated air-cooled cooper welding shoes, and multiple pass ESW welding systems, thus gaining the following advantages, namely, controlling weld bead shape, reducing base metal dilution, reducing total heat input into the parent material, and reduction or elimination of any DC magnetic field in the weld cavity.

Abstract: An automated assembly, system and method for a narrow-gap Electroslag-welded moment connection welded between horizontal beam to vertical column flanges includes vertical column doubler plates affixed to the column web and horizontal beam doubler plates affixed to the beam web with alignment of the respective webs/doubler plates to carry the moment load through the vertical support columns. An embodiment includes a radius in each horizontal beam doubler plate. The assembly, system and method is readily applicable to overdesign moment load factors.

Abstract: A system for narrow-gap electroslag-welded moment connections welded between vertical column flanges includes vertical column doubler plates with top and bottom stiffeners and horizontal beam side plates aligned with the doubler plates to carry the moment load through the vertical support columns. An embodiment includes an elliptical radius in each side plate. Disclosure of an automated modular method for narrow-gap electroslag-welded moment connections is included.

Abstract: Adjustable articulated air-cooled copper welding shoes, capable of being controlled between 800 to 1000 degrees Fahrenheit during Electroslag welding operations, result in faster welds, smaller heat affected zone in the workpieces welded, and less base metal dilution. The shoes thus provide a smaller weld grain structure and stronger bonds in the weld fusion zone.

Abstract: Opposing, paired and positionally adjustable air cooled welding shoes, run-off tabs, and sumps affixed at the junction of workpieces to be welded with an Electroslag welding system. The air-cooled shoes are capable of being controlled between 800 to 1000 degrees Fahrenheit, resulting in faster welds, smaller heat affected zone in the workpieces welded, and far less base metal dilution. These significant results provide a smaller weld grain structure and much stronger bond in the weld fusion zone.

Abstract: A consumable guide tube includes a thin first elongated strip, a second elongated strip and a plurality of insulators. The thin first elongated strip has a front face having at least one longitudinal channel and a back face. The second elongated strip has a front face configured to be coupled to the front face of the first elongated strip and a back face. The plurality of insulator modules are deposited on the back faces of the thin first elongated strip and the second elongated strip. Preferably, the thin first elongated strip is a low carbon cold-rolled steel strip, and the second elongated strip is a low carbon hot-rolled steel strip. The guide tube is also configured to include two or more longitudinal channels.

Abstract: The invention relates to a component (1) for a continuous casting mould, such as a water box, adapter plate etc., to which a copper plate is fixed. The component (1) is composed of at least two individual elements (2, 3, 4, 6, 7), consisting of different materials. The invention also relates to a method for producing a component for a continuous casting mould.

Abstract: A system and method for welding spliced vertical columns with an electroslag welding system. The system includes a welding fixture having opposing, paired and positionally adjustable welding shoes, run-off tabs, and sumps affixed at the junction of columns to be spliced. A distributed control electroslag welding system, welding torch, and consumable guide tube oscillator feed provide molten flux within the shoes filling from the sump to the run-off tab.

Abstract: The invention relates to a storage packet for welding flux, in the form of a bag (1) containing welding flux (5) and with at least one layer of thermo-welded polymer (3a, 3b) and at least one metal film (2), superimposed one on the other and a structure with flexible deformable walls forming said bag (1), characterized in that said bag (1) is hermetically sealed and pressured within the bag is less than atmospheric pressure. The invention further relates to a method for storage of welding flux in such packet.

Abstract: A method of welding two members together wherein welding material is melted in an electrically heated molten slag, and forms a pool of molten welding material beneath the molten slag. The end surfaces of the two members are in contact with the molten weld material and are melted to bond with the weld material.

Abstract: The invention is a consumable guide tube comprising a thin first elongated strip, a second elongated strip and a plurality of insulators. The thin first elongated strip has a front face and a back face and the front face has at least one longitudinal channel. The second elongated strip has a front face and a back face and the front face of the second elongated strip is configured to be coupled to the front face of the thin first elongated strip. The plurality of insulator modules are deposited on the back face of the thin first elongated strip and on the back face of the second elongated strip. Preferably, the thin first elongated strip is a low carbon cold rolled steel strip, and the second elongated strip is a low carbon hot rolled steel strip. The guide tube can also be configured to comprise two or more longitudinal channels.

Abstract: A system for butt welding expansion joint rails with an electroslag welding system. The electroslag welding system for butt welding the expansion joint rails comprises a control system. The method for butt welding the two expansion joint rails with the electroslag welding system comprises defining a weld cavity with a first expansion joint rail, a second expansion joint rail, a plurality of gland shoes, and a pair of butt shoes. The electroslag welding system can also be adapted to weld a expansion joint rail to a support beam. The method for welding the expansion joint rail to the support beam comprising placing the expansion joint rail on a horizontal axis, placing the support beam on a vertical axis and clamping a modular component system to the expansion joint rail.

Abstract: A method for producing metal ingots or billets, especially from steels and Ni- and Co-base alloys, by melting off consumable electrode in an electroconductive slag bath using alternating or direct current in a short, downwardly opening, water-cooled mould through which a current contact can be established with the slag bath. The melting current is introduced into the slag bath through the consumable electrode and through the mould in a controlled manner in terms of regulating the distribution of the current between the electrode and the mould; and is conducted back through the mould and the block and the base plate at option; the division of the currents being adjustable in a controlled manner. The proportion of the overall melting current delivered that is delivered via the consumable electrode can be chosen from between 0 and 100%.

Abstract: This invention relates to a method and apparatus for controlling the composition of a weld. More particularly it relates to welding using an electric circuit, thereby creating a weld puddle, and adding at least one filler that is electrically independent from the electric circuit to the weld puddle at a controllable rate to obtain a target weld composition. The filler can be added to the extent limited by practical weld puddle geometry and, thus, the method and apparatus also facilitate increased weld deposition rates.

Abstract: The invention is a consumable guide tube comprising a thin first elongated strip, a second elongated strip and a plurality of insulators. The thin first elongated strip has a front face and a back face and the front face has at least one longitudinal channel. The second elongated strip has a front face and a back face and the front face of the second elongated strip is configured to be coupled to the front face of the thin first elongated strip. The plurality of insulator modules are deposited on the back face of the thin first elongated strip and on the back face of the second elongated strip. Preferably, the thin first elongated strip is a low carbon cold rolled steel strip, and the second elongated strip is a low carbon hot rolled steel strip. The guide tube can also be configured to comprise two or more longitudinal channels.

Abstract: An object of the present invention is to provide a weld material which contains 8 to 13% Cr, and can be used with the GMA welding method, a GMA welding method which has superior arc stability and can provide a welded material having superior properties, and a welded structure; in order to attain this object, a weld material is provided, which contains in weight, 0.01 to 0.15% C, 0.1 to 0.6% Si, 0.1 to 2.0% Mn, 8 to 13% Cr, 0.1 to 1.5% Ni, 0.3 to 2.0% Mo, 0.05 to 0.5% V, 0.08 to 0.5% W, 0.5 to 5.0% Co, 0.1 to 0.5% Ta, ≦0.08 N, 0.01 to 0.1% REMs, and consisting of the balance Fe with inevitable impurities.