A welding head for a welding apparatus, the head comprising an outer face attachable to a welding device such as an electron beam gun or laser, an inner face sealable to a workpiece, and an outer sealing ring and an inner sealing ring situated within the inner face and disposed on either side of an evacuatable region, wherein the inner face has a teardrop-shaped profile. Outer and inner sealing rings can be inflatable or formed from different materials, the outer sealing ring being formed from a material with a Shore hardness of between 50 to 70 and the inner sealing ring being formed from a material with a Shore hardness of 20 to 40. A bridging seal can extend from within the inner sealing ring to the outer sealing ring.

An etching apparatus includes an etching unit including a laser oscillator configured to oscillate a laser beam for selectively etching a predetermined target etch layer included in a processing target having a multilayered structure, and a laser nozzle configured to selectively etch the target etch layer by irradiating the target etch layer with the laser beam, and a washing unit including a washing nozzle configured to remove a foreign substance attached to an etch surface of the target etch layer by spraying a washing material to the etch surface.

An example laser tool is configured to operate within a wellbore of a hydrocarbon-bearing rock formation. The laser tool includes one or more optical transmission media. The one or more optical transmission media are part of an optical path originating at a laser generator configured to generate a laser beam having an axis. The one or more optical transmission media are for passing the laser beam. The laser tool includes an optical element that is part of the optical path. The optical element is for receiving the laser beam from the one or more optical transmission media and for output to the hydrocarbon-bearing rock formation. The laser tool includes a color applicator head for discharging one or more coloring agents to a surface in the wellbore in a path of the laser beam.

A laser cutting head with movable mirrors may be used to move a beam, for example, to provide beam alignment and/or to provide different wobble patterns for cutting with different kerf widths. The laser cutting head includes a cutting nozzle for directing the laser beam together with a gas to a workpiece for cutting. The movable mirrors provide a wobbling movement of the beam within a relatively small field of view, for example, within an aperture of the cutting nozzle. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the cutting head such as a thermal condition proximate one of the mirrors.

An apparatus for transforming a preform into a container filled with liquid filling material includes a mold that forms a mold head, a sterilization system, a chamber that is common to a group of mold heads, an evacuation system that is connected to the chamber, and conduit lines, each of which connects a mold head to the chamber. The sterilization system sterilizes the interior of the preform while it is in sealing engagement with the mold head. The evacuation system creates a vacuum in the preform. Liquid filling material enters the preform under pressure and causes it to transform into a container.

An in-laser wire feeding device having an inductive auxiliary heating function, comprising a wire feeding pipeline and a laser path unit. The wire feeding pipeline comprises upper and lower wire feeding pipes, and a gap zone is formed between the upper and lower wire feeding pipes. The in-laser wire feeding device further comprises a connecting piece which is located on one side of the gap zone and links the upper wire feeding pipe with the lower wire feeding pipe, an inductive heating coil, and a power supply component. The inductive heating coil comprises a coil body and a connecting part. The center line of the coil body, the center line of the upper wire feeding pipe and the center line of the lower wire feeding pipe are collinear, and the inner wall of the coil body can avoid laser beams reflected downwards by a reflecting mirror.

According to the present application, a machining apparatus (10) for the laser machining of a workpiece (12) in a machining zone (13) is provided, having a first interface (14) for a machining laser source for generating a machining laser beam (15), a second interface (16) for a detector device (for detecting radiation (17) emitted by the machining zone (13); an outlet opening (18) for the machining laser beam (14); and first and second laser beam guiding devices (20, 22), wherein the first laser beam guiding device (20), 20a, 20b) is arranged and designed such that it guides the machining laser beam (14) to the second laser beam guiding device (22) and dynamically moves the machining laser beam (14), and the second laser beam guiding device (22) is arranged and designed such that it guides the dynamically moved machining laser beam (14) through the outlet opening (18) and at least partially guides the radiation (17) emitted by the machining zone (13) through the outlet opening to the second interface (16). Further provided is a method for the laser machining of a workpiece (12).

A hybrid welding device capable of reducing an influence of by-products such as spatters, plasma, plumes, and fume, and reducing contamination of a laser optical system and welding defects is provided. A laser head includes a laser nozzle that forms an optical path of a laser beam, a first rectifying plate that is arranged on a tip side of the laser nozzle so as not to interfere with the laser beam, a first air knife that injects compressed air along the first rectifying plate, a second rectifying plate that is arranged between the first rectifying plate and the welded portion so as not to interfere with the laser beam, and a second air knife that injects compressed air along the second rectifying plate. The first rectifying plate and the second rectifying plate have a shape elongated in a direction perpendicular to an optical axis of the laser beam and a welding direction. The second rectifying plate has a torch opening through which a tip of a welding torch can be inserted.

A feed head apparatus for laser additive manufacturing, comprising an optical housing configured to receive a laser beam and a feedstock therein, wherein the feedstock is for use in an additive manufacturing process that includes a build plate or other additive manufacturing work surface; a first reflective optic for receiving and reflecting the laser beam; and a second reflective optic for receiving laser light reflected by the first reflective optic, wherein the second reflective includes a first region of curvature for directing a portion of the laser light received from the first reflective optic onto the feedstock in a cylindrical configuration such that the feedstock and the cylinder of laser light are coaxial with regard to one another; and a second region of curvature for directing a portion of the laser light received from the first reflective optic onto the build or surface only in a ring-shaped configuration, wherein the ring of laser light surrounds the feedstock and the cylinder of laser light and is coaxial therewith.

A machining condition adjustment device adjusts settings of an ionizer so as to neutralize a charge carried by plasma generated during laser beam machining of a workpiece by a laser beam machining device, calculates an amount of charge per unit time that is to be radiated from the ionizer, based on the amount of charge carried by the plasma generated during the laser beam machining, and sets the ionizer to radiate the calculated amount of charge per unit time.