Abstract: A laser processing head (100) comprises a first-level nozzle (110) and a second-level nozzle (120) that communicate with each other, wherein the second-level nozzle (120) is arranged downstream of the first-level nozzle (110); an inner diameter of the second-level nozzle (120) gradually decreases in a laser transmission direction, and minimum inner diameter of the first-level nozzle (110) is larger than the inner diameter of a tail end of the second-level nozzle (120). The laser processing head (100) solves the contradiction between high energy density laser and the system reliability through gradual coupling. Also provided are a laser processing system and a laser processing method.

Abstract: A microwave heating apparatus and a method for heating/browning a piece of food by means of microwaves are provided. The microwave heating apparatus comprises a cavity arranged to receive, in a substantially horizontal browning region, a piece of food to be browned. The microwave heating apparatus further comprises a microwave source for generating microwaves and a rotatable antenna arranged at the cavity bottom for supplying the generated microwaves. The antenna is configured to produce at least one radiating lobe pointing towards the browning region such that the intersection between the radiating lobe and the browning region forms a hot spot, thereby forming a ring-shaped heating pattern in the browning region under rotation of the antenna. The present invention is advantageous in that a microwave heating apparatus with an improved crisp function is provided.

Abstract: A method for controlling a wire electrical discharge machining process, wherein the method comprises the following steps: dividing a workpiece height HWP into a number NS of vertical sections S of the workpiece, setting a defined observation period TM, NDTM, with each discharge Di, determining a discharge position of each discharge, counting the number of discharges determining any numbers of discharges and adjusting at least one process parameter.

Abstract: A wafer holder includes a mounting table that has a mounting surface for a workpiece at a top, a supporting member that supports the mounting table from a lower side, a first cylindrical member one end of which is joined hermetically to a lower surface of the mounting table, and a second cylindrical member that is provided inside the first cylindrical member and one end of which is joined hermetically to the lower surface of the mounting table.

Abstract: A method for the preparation of steel sheets for fabricating a welded steel blank is provided. The method includes procuring at least two pre-coated steel sheets, each having a pre-coating of an intermetallic alloy layer, topped by a layer of aluminum metal or aluminum alloy or aluminum-based alloy. The sheets have a principal face, an opposite principal face, and at least one secondary face. The sheets are positioned so a gap between 0.02 and 2 mm exists between the secondary faces. The secondary faces face each other. The positioning of the first and second sheets defines a median plane perpendicular to the principal faces. Layers of metal alloy are removed by melting and vaporization simultaneously on the principal faces, in a peripheral zone of the sheets, the peripheral zones being the zones of the principal faces closest in relation to the median plane.

Abstract: A semiconductor wafer held by a holding part in a chamber is irradiated and heated with halogen light emitted from a plurality of halogen lamps. A cylindrical louver and an annular light-shielding member, both made of opaque quartz, are provided between the halogen lamps and the semiconductor wafer. The outer diameter of the light-shielding member is smaller than the inner diameter of the louver. Light emitted from the halogen lamps and passing through a clearance between the inner wall surface of the louver and the outer circumference of the light-shielding member is applied to a peripheral portion of the semiconductor wafer where a temperature drop is likely to occur. On the other hand, light travelling toward an overheat region that has a higher temperature than the other region and appears in the surface of the semiconductor wafer when only a louver is installed is blocked off by the light-shielding member.

Abstract: This invention relates to a portable, ruggedized, impact resistant appliance for brewing a beverage having a water tank system, a water delivery system, a brewing system, electronics capable of brewing a beverage, and a user interface for controlling said electronics.

Abstract: A portable induction heating tool includes a housing which includes a base having a support surface. The support surface defines a recess facing away from the housing. The recess is at least partially defined by a wall projecting from the support surface. A work coil is within the housing and secured to the base in a location aligned with the recess. The portable induction heating tool includes electronic circuitry which is configured to provide oscillating electrical energy to the work coil, thereby generating an oscillating magnetic field projecting away from the base. The electronic circuitry is also configured to detect a quantity of energy consumed by the work coil and to limit the quantity of energy to a predetermined quantity.

Abstract: A method for determining a reference focal position of a laser beam for processing a plate-like member, the method comprising producing at least two incisions in the plate-like member with the laser beam set at different focal positions, irradiating the plate-like member with the laser beam, detecting edges of the incisions by measuring one or more parameters relating to the irradiation of the plate-like member, and establishing a width of the at least two incisions using the detected one or more parameters.

Abstract: This disclosure provides a system, method, and resulting workpiece combining liquid guided laser and electrical discharge machining to create a common feature. The workpiece is positioned in a liquid guided laser cutting path and machined by the liquid guided laser device to create an intermediate feature in the workpiece. The work piece is then positioned in an electrical discharge machining (EDM) device so that an electrode of the EDM device is operatively positioned proximate the intermediate feature and machined using the EDM device to modify the intermediate feature in the workpiece to create the finished common feature in the workpiece.

Abstract: A laser beam directed is moved relative to a workpiece to weld along a weld seam and form a weld pool in the area surrounding the laser beam. The weld pool has a characteristic oscillation frequency fco, and a laser power is modulated with a modulation frequency f and a modulation amplitude ?=1?Pmin/Pmax, where Pmin is minimal and Pmax is maximal laser power during a modulation period. For a normalized characteristic oscillation frequency ?co and a normalized modulation frequency ?, ??2.2*?co, with ?=f·df/?, where ? is the feed rate of the laser beam, and df is diameter of a beam focal spot. Also, ?co=f,cotest·df,cotest/vcotest, where fcotest is a measured characteristic oscillation frequency, df,cotest the diameter of the beam focal spot, and vcotest is the feed rate of laser beam, all during a test measurement without modulation of the laser power.

Abstract: An electric water heater appliance is provided herein. The electric water heater appliance may include a tank, an electric heating element, and a temperature sensor. The tank may define an interior volume extending from a top portion to a bottom portion. The interior volume may define a volume height along a vertical direction between the bottom portion and the top portion. The electric heating element may be operable to heat water within the interior volume. The temperature sensor may be attached to the tank above the electric heating element. A sensor gap may be defined along the vertical direction between the electric heating element and the temperature sensor.

Abstract: A kitchen machine to improve the operation, safety, ergonomics, and versatility. The kitchen machine consists essentially of: a machine body (1) inside which there is a main engine (3) with adjustable operation in both directions, and a control panel (2) through which the user interacts with the kitchen machine and is directly connected to the entire set of electronic components (4) intended to control and manage the machine operation.

Abstract: A method and apparatus for providing welding type power includes a phase shifted double forward converter having a first and second converter with a controller and an output rectifier. The output rectifier has at least one cathode current path that creates a cathode magnetic field when current flows in the cathode current path. The output rectifier also has at least one anode current path that creates an anode magnetic field when current flows in the anode current path. The cathode current path is disposed and oriented and the anode current path is disposed and oriented such that the cathode magnetic field acts to at least partially cancel the anode magnetic field.

Abstract: An apparatus for cooked food includes a spatula assembly defining a plate having a plate first end portion, a plate second end portion, a plate cooking surface and a plate non-cooking surface. The plate first end portion is pivotally in attachment with a spatula assembly cross member of the spatula assembly. The plate is configured to move between a plate upper position and a plate lower position. The apparatus further includes a movable wiper assembly defining an elongated body having a movable wiper cleaning surface along the elongated body. The movable wiper assembly is positioned proximate to the plate and configured to have the movable wiper cleaning surface move across the plate cooking surface when plate is in the plate lower position.

Abstract: A method for printing a three-dimensional (3D) article is provided by the present disclosure. The method includes induction heating, by an induction head assembly, a magnetic material to form an alloy melt. The induction head assembly includes a nozzle and an induction heater that heats the magnetic material. The method further includes including the alloy melt from the nozzle onto a base, and tracing a predetermined pattern on the base with the alloy melt to form a three-dimensional article.

Abstract: A meat aging chamber suitable for residential or portable use is provided. An aging apparatus comprises a refrigerated aging cabinet having a climate created by environmental apparatus. A server in a cloud resource communicates with a control circuit in the aging apparatus and with a portable interactive device. In a setup mode the portable interactive device communicates with a control circuit in the aging apparatus via a communications interface to identify the user to the control circuit. In an operating mode the communications interface enables communication between the cloud resource and the control circuit. A sensor module provides current values to the cloud resource for controlling operation in accordance with a software program embodying the aging protocol. The cloud resource can inform the smartphone of aging progress and alarm conditions. Physical features enable embodying the functions of a commercial aging chamber in a residential sized unit.

Abstract: A plurality of flash lamps that irradiate a semiconductor wafer with flash light are arrayed in a plane. The array of the plurality of flash lamps is divided into two zones: a central zone including a region opposed to a central portion of the semiconductor wafer to be treated, and a peripheral zone outside the central zone. During flash light irradiation, an emission time of a flash lamp belonging to the peripheral zone is set to be longer than an emission time of a flash lamp belonging to the central zone. Thus, a greater amount of flash light is applied to the peripheral portion of the semiconductor wafer, where a temperature drop is relatively likely to occur, than to the central portion thereof, thus preventing a relative temperature drop in the peripheral portion of the semiconductor wafer during flash heating.

Abstract: By optimizing equipment and processing, magnetic domain miniaturization efficiency can be increased, workability can be improved, and processing ability can be increased through same.

Abstract: A system and method depositing metal to form a three-dimensional (3D) part on a substrate. A wire is moved relative to a location on the substrate while a laser heats a proximal end of the wire at the location using a laser beam. The laser causes the wire and substrate to reach a melting point of the wire to fuse the wire at the location on the substrate. The wire can be preheated by passing a current through the wire.