Abstract: The invention concerns an apparatus and a method for laser processing. There is provided at least one first laser beam from at least one first optical feed fiber connected to at least one first laser device and at least one second laser beam from at least one second optical feed fiber connected to at least one second laser device. Said first and second laser beams are combined in a multi-core optical fiber. Said first core of said multi-core optical fiber has a circular cross-section, and said second core has an annular shape concentric to said first core. A composite laser beam comprising first and second output beams is directed from said multi-core optical fiber to a workpiece with overlapping elements to be welded.

Abstract: The temperature of a vaporizing device, e.g., the temperature of a heating element of the vaporizing device, may be controlled according to various aspects of the present disclosure. The vaporizing device may comprise a heating element, a power source, at least one sensor in electronic communication with the heating element and the power source, and a processor configured to control the temperature of the heating element. The method of controlling the temperature may comprise receiving a resistance measurement of the heating element from the at least one sensor, determining the temperature of the heating element based on the resistance measurement, and adjusting the amount of power supplied to the heating element based on the determined temperature of the heating element.

Abstract: An apparatus for preparing food having a heating device with hot plate, a filter device and a cover device, which is in operative connection with the filter device and has an upper side, an underside and side surfaces. The cover device, on the underside, has at least one entry opening of a flow channel for exhaust air, the flow channel being arranged in the interior of the cover device. The flow channel, on a first side surface, has an exit opening, wherein the exit opening can be positioned such that the exhaust air can flow via the exit opening into an entry opening of the filter device.

Abstract: A heater for a semiconductor processing chamber is disclosed that includes a ceramic body, and a resistive heating element embedded in the ceramic body, the resistive heating element disposed in a heater coil having an inner central sector and an outer central sector, the inner central sector having a plurality of first peaks and the outer central sector having a plurality of second peaks, wherein the number of first peaks is less than about fifty-six, and the number of second peaks is less than about eighty.

Abstract: A spot welding apparatus includes a spot welding gun and a welding gun control apparatus. The welding gun control apparatus includes a pressurizing force control part controlling the pressurizing force, a position control part controlling the position of at least one electrode, and a determination part determining whether or not the welding is performed in a normal state. The position control part controls an electrode drive motor so as to hold the electrodes, after the supply of the electric current is started, at positions when the initial pressurizing force is applied before the electric current is supplied. The determination part acquires the pressurizing force and determines whether or not the welding is performed in a normal state based on change tendency in the pressurizing force.

Abstract: A system and method for generating combustion aerosols from liquid fuel. The system includes a furnace with an inner heating tube having a heating tape wrapped thereabout. Further, the system includes a fuel line extending through an inlet end of the heating tube and into the heating tube, and a means for dripping the liquid fuel onto a plurality of different locations on an inner surface of the heating tube. The system further includes a power supply to power the heating tape to heat the inner heating tube to a temperature which can ignite the liquid fuel dripped onto the inner surface of the inner heating tube whereby there is an immediate combustion to form combustion products. Finally, the system includes an air line connected to the heating tube for directing compressed air through the inner heating tube to mix with the combustion products and transport the formed combustion aerosols out of an outlet end of the inner heating tube.

Abstract: A helmet has a helmet shell, a visor connected to the helmet shell, an electrical device attached to at least one of the helmet shell and the visor, and an electrical connector assembly. The electrical connector assembly has a flexible member having a first end magnetically connected to the helmet shell, which is electrically connected to the electrical device. The electrical connector assembly also has a connector connected to a second end of the flexible cord that is electrically connected to the electrical device via the flexible cord. The connector is adapted to connect to a power source.

Abstract: An electric induction furnace for melting and holding a reactive metal or alloy is provided with an upper furnace vessel, an induction coil positioned below the upper furnace vessel, and a melt-containing vessel positioned inside the induction coil with a gap between the outside surface of the melt-containing vessel and the inside surface of the induction coil that can be used to circulate a cooling fluid for cooling the wall of the melt-containing vessel to inhibit leakage of the reactive metal or alloy melt from the vessel. The melt-containing vessel can be integrated with a cooling system for cooling the melt-containing vessel. The melt-containing vessel, induction coil and cooling system can be provided as modular components to facilitate servicing of the melt-containing vessel, the induction coil and the cooling system.

Abstract: Reliable coupling of a high-power laser beam into a liquid-jet in a liquid-jet guided laser system can be achieved with high lifetime performance of the nozzle and the protection window, through setting the parameters of the liquid-jet guided laser system according to an optimum relationship that links the focus point of the laser, the focus cone angle, the laser beam energy distribution profile and the nozzle geometry.

Abstract: A thin-film heating device includes a base layer, a bus bar layer and an electrode layer. The base layer includes a polymeric resistive layer, including conductive filler, in contact with a polymeric dielectric layer. The polymeric resistive layer has a sheet resistance in a range of from about 0.5 ohm/square to about 2 Megaohm/square. The bus bar layer is adhered to the polymeric dielectric layer of the base layer. The bus bar layer includes a first patterned conductive material. The electrode layer includes a second patterned conductive material and is electrically connected to the bus bar layer.

Abstract: Systems, methods, and apparatus to preheat weld wire are disclosed. An example welding torch includes a first contact tip configured to conduct welding current to a consumable electrode, a second contact tip configured to conduct preheating current to the consumable electrode, and a plurality of liquid cooling assemblies configured to conduct the preheating current and to conduct the welding current to the consumable electrode.

Abstract: The invention relates to a device for heating a fluid (2), comprising a heating body (4) having a through passageway (6, 8) for the fluid and provided with at least one groove (14) on its outer surface; at least one electrical resistance (24) housed in the at least one groove (14) of the heating body. The device further comprises at least one closure plate (20) of the at least one groove (14) overlying the at least one resistance (24).

Abstract: It is a purpose of the present invention to provide a wire electrical discharge machining system allowing a wire electrical discharge machining device and a robot to operate in conjunction with each other with high efficiency. A wire electrical discharge machining system 1 includes wire electrical discharge machining devices 7, 11, and 15, and a robot unit 17 that mounts a workpiece on the wire electrical discharge machining device. The wire electrical discharge machining devices 7, 11, and 15 may each perform either rough machining with supported cores or finishing machining after the cores are removed. Subsequently, core processing may be performed by means of a corresponding dedicated apparatus. Also, the core processing may be performed by means of a single common apparatus.

Abstract: According to one embodiment, a welding or plasma cutting system is provided that includes a torch having a torch body. Located on or in the torch body are one or more status indicators that provide, for example, a status of a process parameter (e.g. current data, pressure data, etc.) and/or of an operating mode of the torches. Control circuitry coupled to the one or more status indicators is configured to activate the one or more status indicators prior to a carrying out of a welding or plasma cutting operation through use of the torch and to deactivate the one or more status indicators during a time when the welding or plasma cutting operation is being carried out by the torch. An associated method of operating the torch includes activating the one or more status indicators prior to a carrying out of a welding or plasma cutting operation by use of the torch, and during a time when the welding or plasma cutting operation is being carried out by use of the torch, deactivating the one or more status indicators.

Abstract: A welding or additive manufacturing wire drive system includes a first drive roll having a first annular groove, a second drive roll having a second annular groove, a first welding wire located between the drive rolls in the annular grooves, and a second welding wire located between the drive rolls in the annular grooves. A biasing member biases the first drive roll toward the second drive roll to force the first welding wire to contact the second welding wire. The first welding wire contacts each of a first sidewall portion of the first annular groove, a first sidewall portion of the second annular groove, and the second welding wire. The second welding wire contacts each of a second sidewall portion of the first annular groove, a second sidewall portion of the second annular groove, and the first welding wire. The drive rolls rotate in opposite directions thereby moving the welding wires through the wire drive system.

Abstract: A laser processing apparatus includes a light source, a laser head configured to emit a laser beam, a robot configured to move the laser head, and a control apparatus configured to control start and stop of generation of the laser beam and control operation of the robot. The control apparatus controls the light source to generate the laser beam when a first time has elapsed after causing the robot to start an operation of accelerating the laser head such that a movement speed of the laser head with respect to a processing target object reaches a constant target speed.

Abstract: A substrate processing system for processing a substrate within a processing chamber is provided and includes a source terminal, a substrate support, and a tuning circuit. The substrate support holds the substrate and includes first and second electrodes, which receive power from a power source via the source terminal. The tuning circuit is connected to the first electrode or the second electrode. The tuning circuit is allocated for tuning signals provided to the first electrode. The tuning circuit includes at least one of a first impedance set or a second impedance set. The first impedance set is serially connected between the first electrode and the power source and receives a first signal from the power source via the source terminal. The second impedance set is connected between an output of the power source and a reference terminal and receives the first signal from the power source via the source terminal.

Abstract: The invention relates to a method for monitoring the temperature of the sleeve part of a tool holder, which sleeve part is inserted into the induction coil of a contraction device, wherein the instantaneous inductance of the induction coil is measured during the inductive heating and the current supply to the induction coil is influenced if the instantaneous inductance approaches, reaches, or exceeds a specified value.

Abstract: A metallic member bonding device includes a pressurizing unit, a current supply unit, and a deformation suppressing unit. The pressurizing unit pressurizes a first metallic member toward a hole portion of a second metallic member to press the first metallic member therein. The current supply unit supplies a welding current between the first metallic member and the second metallic member. The deformation suppressing unit suppresses deformation of one of the first metallic member and the second metallic member, the one member having a constituent metallic material with at least one of a proof stress and a melting temperature lower than that of the other member, the deformation being in a direction of a cross section crossing a direction of the press-in. Then, the deformation suppressing unit is provided in a region covering at least a plastic flow range in the press-in direction.

Abstract: Methods for the gas-phase delivery of gases, such as process gases, from the gas phase of a multicomponent source liquid are provided. The methods are generally directed to the generation of process gases having mass flow rates which are proportional to the input power delivered to the multicomponent source liquid containers. The methods may be used to deliver process gases to critical process applications.