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8158906 |
Welding method and welding device
Conventional welding methods have the disadvantage of producing worse welded joints at the beginning of the process than in the later course of the method. The method in question uses an...
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8158907 |
Weld wire with enhanced slag removal
A low alloy or mild steel weld containing a slag-modifying additive selected from the group consisting of antimony, bismuth, germanium and compounds thereof; A weld wire for forming a low alloy or...
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8153934 |
Saw flux system for improved as-cast weld metal toughness
A granular flux having controlled amounts of titanium and boron to facilitate in the formation of a weld metal having a high toughness without requiring refinement of the weld metal by reheating...
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8119951 |
Weld wire with enhanced slag removal
A low alloy or mild steel weld containing a slag-modifying additive selected from the group consisting of antimony, bismuth, germanium and compounds thereof; A weld wire for forming a low alloy or...
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8101029 |
Weld metal of high-strength Cr-Mo steel
A weld metal of a high-strength Cr—Mo steel formed by shielded metal arc welding contains: 0.04 to 0.10% by mass C, 0.15 to 0.5% by mass Si, 0.5 to 1.0% by mass Mn, 2.00 to 3.25% by mass Cr, 0.9 t...
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8049131 |
Ultrahigh strength welded joint and ultrahigh strength welded steel pipe excellent in cold cracking resistance of weld metal, and methods for producing the same
The present invention, in a welded joint of steel sheets and a steel pipe body having a tensile strength of 800 MPa or more (over X100 in API Standards), provides: the welded joint of the steel...
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7989732 |
Method of AC welding using a flux cored electrode
A method of AC welding that includes the step of supplying AC current with a given waveform from a power source to an advancing electrode and workpiece. The AC current is used to melt the electrode...
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7915566 |
Weld filler, use of the weld filler and welding process
The invention relates to a weld filler and to a use of a weld filler which significantly improves the weldability of some nickel-based superalloys and includes the following constituents (in wt %):...
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7884305 |
Weld bead shape control
Disclosed are techniques and compositions for arc welding consumables such as electrodes that reduce the energy otherwise required for the welding. Particularly, the techniques and electrode...
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7786407 |
Process for capillary electric welding of low and high alloy steels, hardened or not, and bimetals, for the obtainment of a determined texture, without thermal treatment
Patent of Invention for PROCESS CAPILLARY ELECTRIC WELDING OF LOW AND HIGH ALLOY STEELS, HARDENED OR NOT, AND BI-METALS, FOR THE OBTAINMENT OF A DETERMINED TEXTURE, WITHOUT THERMAL TREATMENT, in...
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7755001 |
High Cr Ni-based alloy filler material and welding rod for shielded metal arc welding
The present invention provides a high Cr Ni-based alloy filler material of which weld cracking resistance can sufficiently be increased by suppressing generation of scales, and a welding rod for...
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7718914 |
Metal-protective gas-joint with changeable polarity
A method of gas-shielded metal arc joining using a consumable electrode having an alternating polarity (GMA-AC). A shielding gas containing argon is used to improve process stability and working...
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7518082 |
Method for arc welding of ductile cast iron
A method for joining components made from ductile cast iron and made from ductile cast iron and steel, by arc welding with fusible electrodes under a gas blanket. The gas blanket comprises, in...
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7498543 |
Method for joining or repairing metal surface parts
A method of joining or repairing metal surface structures. Joinder and/or repair of metal or metal-polymer laminate panels may be carried out using so-called “cold metal transfer” gas metal arc wel...
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7380384 |
Layout for shop window construction, as well as a window frame, glazed door and/or similar, composed of such a layout
A layout for shop window construction includes a dormant frame and an opening frame of a closed tubular section defining an internal volume, the opening or dormant frames appearing in the form of...
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7371994 |
Buried arc welding of integrally backed square butt joints
Buried arc welding is employed to fuse together a first component, a second component, and a third component or an underlying portion of the second component, the first and second components in...
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7335849 |
Stud welding method
A method of welding a stud 15 to a base material 14, both made of magnesium or magnesium alloy, comprising; a first step of disposing the stud 15 having a projection 28 at an end portion thereof to...
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7244904 |
Metal-protective gas-joint with changeable polarity
A method of gas-shielded metal arc joining using a consumable electrode having an alternating polarity (GMA-AC). A shielding gas containing helium is used to improve process stability and working...
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7241971 |
Laser/arc hybrid welding process for ferritic steels
A method and an apparatus for a hybrid laser beam and electric arc welding process. A laser beam, an electric arc, a shielding gas and a consumable welding wire are used to create a weld on a steel...
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7241970 |
Ternary gas mixture which can be used in the braze welding of galvanized parts
A method of brazing galvanized metal parts such as those used for motor vehicle elements or container components. The parts are joined together to create a brazed joint by using at least one...
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7217905 |
Weld filler metal that reduces residual stress and distortion
A filler metal including not more than about 0.1% C, not more than about 1.0% Si; not more than about 0.8% Mn; from about 10.5% to about 13.0% Cr; from about 0.65% to about 4.0% Ni; from about 10(%...
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7208695 |
Welding shield gas and welding method
A welding shield gas comprising an inert gas and nitrogen gas, where the concentration of the nitrogen gas is 1 to 95 vol %; or comprising an inert gas and a helium gas, where the concentration of...
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7189941 |
Process for making heterogeneous joints under shielding gas
In joining heterogeneous materials that differ in their melting points, a shielding gas mixture with active gas content is utilized. In particular, the shielding gas mixture contains helium and...
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7087853 |
Method for joining porous metal structures and structure formed thereby
A method for joining weldable metal structures and compound structure formed using the method are disclosed herein. The method includes steps of abutting a first structure to a second structure...
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7075033 |
Low cost titanium welding method
Method of welding titanium using gas metal arc welding procedure where the shielding for the weld included torch shielding gas only and no trailing or backup shielding. The technique used here is a...
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7071438 |
Gas composition for arc welding
The disclosed invention is a composition and process for employing a shielding gas in arc welding. The disclosed composition includes oxygen in an amount between about 0.6% and about 1.9%, helium...
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7026576 |
Welding wire and welding method using the wire
A welding wire contains 0.025 mass % or less C, 1.3 mass % or less Si, 2.0 mass % or less Mn, 10 to 25 mass % Cr, 0.04 to 0.2 mass % N, Al and Ti in amounts (mass %) satisfying the relationship:...
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7015417 |
Workpiece welding process
A laser light L is emitted from a laser light source 6 to workpieces 1, 2, to form a laser molten weld pool 3, and immediately thereafter, an arc molten weld pool 4 is formed using an arc welding...
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6953508 |
High strength steel weld having improved resistance to cold cracking and a welding method
A welding method includes performing welding to form a weld metal consisting essentially of, in mass %, C: 0.01-0.15%,Si: 0.02-0.6%,Mn: 0.6-3.0%,Al: 0.004-0.08%,Ti: 0.003-0.03%,B: at most...
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6927361 |
Surface oxide weld penetration enhancement method and article
A method for welding iron-based or nickel-based superalloy assemblies into a unitary article. First, the assemblies are heated in an air atmosphere, at a rate suitable to minimize geometric...
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6906281 |
Method for laser welding of metal
A method of welding at least two metal sheets protected by a zinc coating that has a low vaporizing temperature. The metal sheets are placed on top of each other and a head of a welding machine is...
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6884963 |
Apparatus and method for welding duplex stainless steel
Arc welding of duplex stainless steel tubing is accomplished using a non-pulsed electric arc and a high refractory weld flux. Weld beads, uniform throughout their lengths, and having a duplex phase...
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6855913 |
Flux-cored wire formulation for welding
A weld wire having a core composition comprising a combination of graphite and a compound of potassium is disclosed. The combination of graphite and the compound of potassium in the core...
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6835913 |
Hardsurfacing welding wire and process
A welding wire comprising a flux core having a core composition alloyed with a combination of alloying elements is described. The alloying elements comprise Cr and N, wherein the flux core...
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6825442 |
Tailor welded blank for fluid forming operation
A tailor welded blank for use in a fluid-forming operation includes a first sheet element having a physical characteristic with a first value and a second sheet element having the physical...
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6753504 |
Method for welding together two parts which are exposed to different temperatures, and turbomachine produced using a method of this type
In a method for welding together two parts (12, 13), especially of a turbomachine, which are exposed to different temperatures, of which the first part (12) consists of a steel and the second part...
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6730876 |
Highly ductile reduced imperfection weld for ductile iron and method for producing same
The art has experienced difficulty obtaining “sound” welds with high-nickel welds above the second pass. Particular problems are tension anomalies and sub-optimal interweld pass fusion at hig...
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6713722 |
Rotor and method for welding an element of a rotor
A method of forming a rotor comprises the step of welding a rotor element. The weld metal comprises: from 0.04 to 0.1% carbon, from 0 to 0.5% silicon, from 0.1 to 0.6% manganese, from 0 to 0.01%...
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6610962 |
Method for producing a crack resistant weld
A welding method that enables the joining of at least two dissimilar, metallic alloys to form a weld that is free of cracks is disclosed. The method incorporates a pure (99.00% minimum by weight)...
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6608284 |
Weld wire with enhanced slag removal
A metal core weld wire for producing weld deposits with improved removability of slag islands comprising a steel sheath and a core, a core composition disposed in the core, the core composition...
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6600126 |
Shell with a shell body and a process for the preparation of radially protruding guiding means on a shell body
Guiding means being arranged on a surface area of a shell are made of high purity nickel by build-up welding. This avoids a drag-in of copper into a gun barrel foreseen for the launch of a shell. A...
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6596971 |
Process for the MIG welding of nickel and nickel alloys with a shielding gas based on argon and CO2
Process for the MIG welding of nickel and nickel alloys, with the use of a gas shield for at least part of the welding zone, in which process the gas shield is a gas mixture containing from 0.05%...
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6586700 |
Process for the MIG welding of aluminum and its alloys with a shielding gas of the Ar/He/O2 type
For MIG welding, either in a spray mode without current modulation or in a pulsed mode, of aluminum and aluminum alloys, with the use of a gas shield for at least part of the welding zone, the gas...
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6583387 |
Heating apparatus for a welding operation and method therefor
A heating apparatus and method for pre-weld heat treating, welding and post-weld heat treating a superalloy article in a single enclosure while avoiding oxidation of the article. The enclosure is...
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6565678 |
Weld metals with superior low temperature toughness for joining high strength, low alloy steels
Weld metals suitable for joining high strength, low alloy steels are provided. These weld metals have microstructures of acicular ferrite interspersed in a hard constituent, such as lath...
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6541735 |
Bearing shaft assembly having a crack resistant weld
A welding method that enables the joining of at least two dissimilar, metallic alloys to form a weld that is free of cracks is disclosed. The method incorporates a pure (99.00% minimum by weight)...
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6538234 |
Gas shielded arc welding method
Gas shielded arc welding is performed using gas nozzle 10 which includes a straight portion 14 that permits the shielding gas flows from orifices 18 to flow parallel to the axial direction and a...
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6521867 |
Flux-cored wire for gas-flow-shielded welding
A flux-cored wire for welding shielded by a flow of gas, in particular of the rutile or slag-free type, composed of an outer metal sheath and a central core comprising filling elements, and an MAG...
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6495790 |
Plasma arc keyhole welding stability and quality through titanium nitride additions
A method for reducing or eliminating sagging in plasma arc keyhole welds adds a fluxing agent to the weld. The fluxing agent may be titanium nitride and/or titanium carbonitride. The fluxing agent...
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6465755 |
Manufacture of repair material and articles repaired with the material
A process for the manufacture of repair material. The repair material is ductile and readily mechanically deformed and can be used in the repair of turbine components. The process comprises...
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