Patent application number | Description | Published |
20100061014 | Magnetic Reproducing Element Using Anomalous Hall Effect and Magnetic Head Using the Same - According to one embodiment, magnetic reproducing element for detecting a magnetic field from a magnetic recording medium comprises a sensor film including a perpendicular magnetization film having a magnetization easy axis in a direction perpendicular to a film plane, wherein magnetization in the sensor film tilts upward or downward in an element height direction from the magnetization easy axis while no magnetic field is applied from the magnetic recording medium, and change in anomalous Hall voltage generated in the sensor film is detected, thereby allowing the magnetic field applied from the magnetic recording medium to be detected. Other magnetic reproducing elements and magnetic heads employing magnetic reproducing elements are described as well. | 03-11-2010 |
20100142084 | MAGNETIC MEDIUM HAVING AN ARTIFICIAL PATTERN STRUCTURE USING A GRADIENT OF A MAGNETIZATION REVERSAL FIELD AND A METHOD OF USE THEREOF - To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for recording synchronization timing lag or tracking misregistration on the pattern dot. Each pattern dot has a structure in which a plurality of parts having different magnetization reversal fields are bonded with exchange interaction in the in-plane direction of a medium, substrate. The positional relationship between the parts having different magnetization reversal Fields is substantially coincident between the adjacent pattern dots, which are arranged to have a gradient of magnetization reversal field in a track direction or track transverse direction. Further, the recording is performed by adapting a gradient of recording magnetic field to the gradient of magnetization reversal field. Other methods and systems are described as well. | 06-10-2010 |
20100165500 | Thermal Energy Assisted Medium - In order to provide a thermal energy assisted medium capable of improving anti-sliding reliability over long periods of time in low flying head conditions, while also maintaining a high SNR, a unique medium is proposed. A soft magnetic layer is formed on a substrate, a soft magnetic layer is formed thereon via a non-magnetic intermediate layer, and an intermediate layer, a crystal oriented control intermediate layer, an artificial lattice intermediate layer having an artificial lattice film in which a first layer comprising Co and a second layer comprising Pt and Pd are laminated repeatedly to form a recording layer, and a cap layer and an lubricating layer are formed. The concentration of Pd comprising the second layer is from about 20 atomic % to about 40 atomic %. Other mediums and systems are also described. | 07-01-2010 |
20100302682 | Magnetic Recording Media Having Recording Regions and Separation Regions That Have Different Lattice Constants and Manufacturing Methods Thereof - According to one embodiment, a magnetic recording medium includes a magnetic recording layer formed above a substrate, the magnetic recording layer being comprised of an alloy having a crystal structure, recording tracks formed on the magnetic recording layer in nearly concentric circular shapes, wherein the recording tracks are comprised of a first alloy composition having a crystal structure, and track separation regions formed between the recording tracks on the magnetic recording layer, wherein the track separation regions are comprised of a second alloy composition having a crystal structure, the second alloy composition comprising the first alloy composition and a non-magnetic element, wherein a lattice constant of the second alloy composition is greater than a lattice constant of the first alloy composition. In other embodiments, methods of manufacturing magnetic recording media and systems using magnetic recording media are described. | 12-02-2010 |
Patent application number | Description | Published |
20090252955 | STEEL SHEET HAVING EXCELLENT WELDABILITY - Disclosed is a steel sheet, containing: Si: 0.20-2% (the term “%” herein means “mass %”, the same is true hereinbelow), Mn: 1-2.5%, a total mass of Si and Mn being 1.5% or more, and O: 0.002% or less (exclusive of 0%), C: 0.02-0.25%, P: 0.1% or less (exclusive of 0%), S: 0.05% or less (exclusive of 0%), Al—0.02-0.2%, and N: 0.0015-0.015%. The steel sheet of the invention can be advantageously used for forming wide beads even in high-speed arc welding of 100 cm/min or higher. | 10-08-2009 |
20090261085 | PURE AR GAS SHIELDED WELDING MIG FLUX-CORED WIRE AND MIG ARC WELDING METHOD - A pure Ar-MIG welding wire for welding steel according to the present invention is formed of a flux-cored wire. The flux-cored wire is formed in the manner that a formation formed by welding a carbon steel hoop into a pipe shape or a seamless pipe is used as an outer sheath, the outer sheath is filled with a flux, and a wire drawing process is performed. The flux accounts for 7 to 27 mass % of the total wire mass. The wire contains graphite in the amount of 0.16 to 2.00 mass % on the basis of the total wire mass and iron powder in the amount of 20 mass % on the basis of the total flux mass. According to the construction, neither expensive metal resource nor a greenhouse effect gas is used, slag and fume generation is inhibited, and a weld joint having a high static tensile strength and fatigue strength can be obtained. | 10-22-2009 |
20110114606 | HARDFACING MIG-ARC WELDING WIRE AND HARDFACING MIG-ARC WELDING PROCESS - A wire is adopted to hardfacing MIG-arc welding using a pure argon gas as a shielding gas. The wire is a flux-cored wire prepared through drawing a steel hoop or steel pipe as a sheath in which a flux is filled. The flux contains, based on the total mass of the wire, C: 0.12 to 5.00 percent by mass, Si: 0.50 to 3.00 percent by mass, Mn: 0.30 to 20.00 percent by mass, P: 0.050 percent by mass or less, S: 0.050 percent by mass or less, and at least one of TiO | 05-19-2011 |
20110253679 | HIGH-CURRENT-DENSITY GAS-SHIELDED ARC WELDING - Disclosed is a method for performing gas-shielded pulsed arc welding at high current densities with a flux-cored wire as an electrode wire. The pulsed arc welding is carried out by passing a pulsed current so that a pulse peak current density during a pulse peak time Tp is 400 to 950 A/mm | 10-20-2011 |
20110259853 | CONSUMABLE-ELECTRODE GAS-SHIELD ARC WELDING METHOD AND CONSUMABLE-ELECTRODE GAS-SHIELD ARC WELDING SYSTEM - In consumable-electrode gas-shield arc welding, carbon dioxide gas is used as shield gas; the molten pool is formed using a pulsed arc as a leading electrode arc transferring one droplet per cycle by alternately outputting, in each cycle, pulses of two different pulse waveforms of which a pulse peak current level and/or a pulse width per period differ; the conductively heated filler wire is inserted into the molten pool as a trailing electrode; the distance between a tip of the filler wire inserted into the molten pool and a conductive point of the filler wire is set within a range of 200×10 | 10-27-2011 |
20120003035 | FILLET WELD JOINT AND METHOD FOR GAS SHIELDED ARC WELDING - A fillet weld joint of steel having high fatigue strength by improving stress concentration without excessively relying on imparting a compressive residual stress to a toe part by welding materials, free of cracking, and excellent in the toughness, and a method for gas shielded arc welding for obtaining the fillet weld joint are provided. In the fillet weld joint, a martensitic transformation starting temperature (Ms point) of a weld metal is 400° C. or above and 550° C. or below, a value obtained by dividing a toe radius ρ of a toe part of welding by a sheet thickness t of a base metal (ρ/t) is 0.25 or above, an expression below | 01-05-2012 |
20120055903 | FLUX-CORED WELDING WIRE AND METHOD FOR ARC OVERLAY WELDING USING THE SAME - To provide a flux-cored welding wire and a method for arc overlay welding attaining excellent weldability and low dilution ratio and obtaining a weld bead excellent in corrosion resistance in overlay welding using the flux-cored welding wire having an advantage of high deposition rate and deposition efficiency. The flux-cored welding wire for gas shielded arc welding including flux filled up in an outer sheath and using pure Ar as a shielding gas contains, as percentage to the total mass of the flux-cored welding wire, C: 0.20 mass % or below, Si: 15.00 mass % or below, Mn: 20.00 mass % or below, P: 0.0500 mass % or below, S: 0.0500 mass % or below, and Cr: 15.0-50.0 mass %, with the remainder being Fe and inevitable impurities. | 03-08-2012 |
20120125903 | WELDING TORCH, WELDING TIP, AND WELDING ROBOT - A welding torch includes a tip connection body, a holding member, a fixing member, and a welding tip. The holding member is displaceable in the axial direction of the tip connection. The fixing member fixes the welding tip in place in the axial direction of the welding tip when the fixing member is in contact with a smaller diameter portion, and the fixing member releases the welding tip when the fixing member is in contact with a larger diameter portion. | 05-24-2012 |
20120285932 | WELDING TORCH - A welding torch includes: a first tip body to which a welding wire, gas, and current having passed through a torch body is supplied; a first tip provided at a distal end of the first tip body to supply electric current having passed through the first tip body to the welding wire; an insulating bushing provided inside the nozzle, on the outer periphery of the first tip body; a second tip body to which electric current from a power source is supplied; and a second tip provided at the distal end of the second tip body to supply the current having passed through the second tip body to the welding wire. The first tip and the second tip are axially arranged at a predetermined distance and supply electric current to the welding wire. | 11-15-2012 |
20120312795 | TWO-ELECTRODE WELDING METHOD - In a two-electrode welding method of the present invention, a leading electrode is used to perform gas-shielded arc welding and a trailing electrode is an energized filler. A trailing electrode wire protrudes from a guide lead or guide tip and is energized from an energizing tip. The distance between a welding surface and the energizing tip is 100 mm or more and 1500 mm or less. The distance between electrodes is 10 mm or less. The electric current of the leading electrode is 250 A or more, and the electric current of the trailing electrode is 10 A or more and 50% or less of the electric current of the leading electrode. The feeding speed of the trailing electrode wire is 20% or more and 50% or less of the feeding speed of the leading electrode wire. | 12-13-2012 |
20130008003 | WELDING TIP REPLACEMENT APPARATUS, WELDING TIP REPLACEMENT SYSTEM, AND METHOD FOR REPLACING WELDING TIP - A welding tip replacement apparatus is used for a welding torch that includes a tubular tip connection body, a tubular retaining member fitted over the tip connection body, and a tubular welding tip fitted within the tip connection body, the welding torch being configured such that displacing the retaining member toward the proximal end of the tip connection body along the axis of the tip connection body causes the welding tip axially fastened to the tip connection body to be released. The apparatus includes a first grasping mechanism grasping the retaining member, a second grasping mechanism grasping the welding tip protruding from the retaining member in a direction away from the distal end of the tip connection body, a first driving mechanism driving the first grasping mechanism axially, and a second driving mechanism driving the second grasping mechanism axially. | 01-10-2013 |
20130161303 | FLUX-CORED WELDING WIRE FOR CARBON STEEL AND PROCESS FOR ARC WELDING - Arc welding is performed with a flux-cored welding wire using pure Ar shielding gas with a pulsed current having a peak current of 340 to 540 A and a peak current time of 0.7 to 2.5 ms as a welding current, in which the wire includes a carbon-steel sheath and contains, on a mass percent basis, 0.02% to 0.15% C, 0.30% to 1.50% Si, 0.70% to 2.30% Mn, 0.010% to 0.100% S, 0.01% to 0.18% Ti, 0.030% or less P, and 0.15% or less Cr, with respect to the total mass of the wire, in which the wire has a flux content of 10.0% to 30.0%, the flux has a S content of 0.030% to 0.600%, and the wire satisfies [S | 06-27-2013 |
20130233833 | TANDEM GAS-SHIELDED ARC WELDING METHOD - In a tandem gas-shielded arc welding method, carbon dioxide is used as a shielding gas for a leading electrode formed by a solid wire, an argon-carbon dioxide gas mixture containing at least 60% by volume of argon gas is used as a shielding gas for a trailing electrode formed by a solid wire or a flux-cored wire, both the leading electrode and the trailing electrode have a reverse polarity, the leading electrode satisfies the relationships “5.00≦(I·V·10 | 09-12-2013 |
20130240488 | FLUX-CORED WIRE AND GAS-SHIELDED ARC WELDING METHOD USING THE SAME - There is provided a flux-cored wire containing flux within a stainless steel or mild steel outer cover for use in stainless steel welding and gas-shielded arc welding using a shielding gas. The flux-cored wire contains, based on the total mass of the flux-cored wire, predetermined amounts of C, Si, Mn, P, S, Cr, Ti, and O. The remainder are Fe and incidental impurities. The shielding gas is pure Ar gas. | 09-19-2013 |
20140116999 | ARC WELDING APPARATUS, CONSTANT VOLTAGE CHARACTERISTIC WELDING POWER SOURCE, AND METHOD FOR PERFORMING ARC WELDING - An arc welding apparatus includes a lifting motor. A speed adjustment circuit controls the lifting motor such that the rising speed of the welder decreases if a current of the welding power source is smaller than a set value, or increases if the value of the current is larger than the set value. A voltage adjustment circuit controls the welding power source such that the voltage increases if the number of times that the voltage falls below a determination voltage is larger than a set number of times or if periods for which the voltage remains below the determination voltage are longer than a set time, or decreases if the number of times that the voltage falls below a determination voltage is smaller than a set number of times or if periods for which the voltage remains below the determination voltage is shorter than a set time. | 05-01-2014 |
20150027995 | SOLID WIRE, AND GAS-SHIELDED ARC WELDING METHOD USING SAME - A solid wire is for gas-shielded arc welding, using a shielding gas, and for galvanized steel sheet welding. The solid wire comprises, to the mass of the whole of the solid wire, predetermined amount of C, Si, Mn, P, S, O, and Cr, with the balance consisting Fe and inevitable impurities. The solid wire satisfies “1.0≦(percentage by mass of Si+that by mass of Mn)/{100(that by mass of S+that by mass of O}≦4.0” and “0.50≦percentage by mass of Mn/that by mass of Si≦2.00”. The shielding gas is an Ar gas comprising 25 to 40% of CO | 01-29-2015 |