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1580results about "High frequency current welding apparatus" patented technology

Welding Job Sequencer

A semi-automatic welding work cell, including a welding job sequencer that automatically selects a welding schedule for use by an operator in the semi-automatic welding work cell. The automatic selection may be by way of elapsed time, a detection of welding operations, a detection of the amount of welding wire supplied for the welding operation, or a detection of the amount of energy supplied for the welding operation.
Owner:LINCOLN GLOBAL INC

Ultrasonic impact machining of body surfaces to correct defects and strengthen work surfaces

Metallic workpieces of diverse shapes having work surfaces which are deformed at the surface and adjacent sub-surface layers by surface impact from ultrasonic transducers employing freely axially moving impacting elements propelled and energized by a transducer oscillating surface vibrating periodically at an ultrasonic frequency. The impacting elements are propelled in a random aperiodic and controlled impact mode at different phases of the periodic oscillation cycles. The transducer may be portable and provides a series of mechanically interconnected stages having mechanical resonances harmonically related as a multiple of the primary ultrasonic frequency and have matched stage resistances under instantaneous loading when the impact elements are driven by the transducer oscillating surface into the surface of the workpiece. This mode of operation produces Q-factor amplification of the input ultrasonic power oscillator energy at the impact needles and high propulsion velocities making it possible to machine metallic workpiece bodies to greater depths for compressing the metal to increase compressive strength of the workpiece work surfaces to substantially the ultimate material strength. The impact machining is done at ambient temperatures.
Owner:PROGRESS RAIL SERVICES

Method for operating a heating device of an electric heating appliance having a plurality of heating devices

In an operating method for a hob having a plurality of heating elements, an operating action for a heating element, such as heating with an additional region on the cooktop or invoking a parboiling step, is selected in an initial step by providing input to a general input sensor element that is not associated with any specific heating element. In a subsequent step, the selected operating action is allocated or associated with a specific heating element by operating a cooking element specific sensor element, for example when setting the power level for that heating element. Therefore, sensor elements can be provided with an advantageous multiple-use effect for general operating actions. Furthermore, the operating sequence permits simple and convenient operation.
Owner:E G O ELEKTRO GERAETEBAU GMBH

Inductive self-soldering printed circuit board

A new apparatus for inductively soldering surface-mount, straddle-mount and through-hole type electronic components into a self-soldering PCB (printed circuit board) in an automated fashion utilizing localized Electromagnetic Induction Heating (E.I.H.). Current manufacture technology for packaging electronic components depends on the reflow and wave soldering processes. Both processes heat up to relatively high temperatures the entire assembly, namely its PCB and all the electronic components being soldered into it. Such harsh high-temperature environment frequently causes components damage resulting in rejects and / or demanding rework. With this invention reflow oven and / or wave soldering equipment is not required. During a soldering operation only the leads and pads being soldered are heated but neither the body of said electronic components nor the dielectric material forming said self-soldering PCB and its interconnecting traces are heated. Because of this selectively localized inductive heating, the invention permits to reduce cost and improve the quality and reliability of manufactured products. The invention consumes about 200 times less energy than the reflow and wave soldering processes. This invention can readily be utilized to complement and / or supplement the reflow and wave soldering processes by providing selective inductive self-soldering of odd-form and / or heat-sensitive components. The invention also allows in-process, and in-situ, testing of soldered joints quality thus permitting rework before final assembly of a self-soldering PCB is completed. This invention also provides for a useful inductive de-soldering apparatus.
Owner:TRUCCO HORACIO ANDRES

Bus bar and battery module including the same

A battery module includes a plurality of secondary batteries, each of the secondary batteries having a first terminal and a second terminal comprising different metals; and a plurality of bus bars, each of the bus bars including a first connecting portion comprising a first metal and connected to the first terminal of one of the secondary batteries, and a first end portion, and a second connecting portion comprising a second metal different from the first metal and connected to the second terminal of another one of the secondary batteries adjacent to the one secondary battery, and a second end portion, wherein the first end portion is connected to the second end portion by a weld.
Owner:ROBERT BOSCH GMBH +1

Ultrasonic impact methods for treatment of welded structures

This invention provides methods of treatment for work products of materials such as steel, bronze, plastic, etc. and particularly welded steel bodies by pulse impact energy, preferably ultrasonic, to relax fatigue and aging and extend expectant life. The treatment may occur (a) at original production, (b) during the active life period for maintenance or (c) after failure in a repair stage. The ultrasonic treatment improves the work product strength. In welded products residual stress patterns near the weld sites are relaxed and micro-stress defects such as voids and unusual grain boundaries are reduced. The basic method steps are non-destructive in nature, inducing interior pulse compression waves with ultrasonic transducers and accessory tools impacting an external product surface with enough impulse energy to heat and temporarily plasticize the metal interior and relax stresses. The nature of the work product interior structure being treated is determined by sensing the mechanical movement at the impact surface of the work body to produce feedback frequency and phase signals responsive to input impact signals. These signals automatically conform driving pulse energy frequency and phase to the input transducers to match the mechanical resonance frequency of the working transducers and increase efficiency of energy transfer. Such feedback signals also are available for automated procedures which can improve product quality and consistency.
Owner:PROGRESS RAIL SERVICES
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