摘要:
An extruded filler wire for use in a hot wire process. The filler wire includes a first core component; and a second coating component coupled to at least a portion of the first core component, the second coating component having a different composition from the first component, where the wire has a cross-sectional area with the first and second components asymmetrically arranged about a center of the wire.
摘要:
A system and method is provided where a work piece is welded at high speeds with minimal porosity and spatter. In embodiments, the work piece is welded with an arc welding process to create a weld puddle and the weld puddle is irradiated by a energy beam downstream of the arc welding operation, such that high welding speeds are attained. The high energy heat source is positioned downstream of the welding operation to input energy into the weld puddle to change its shape or characteristics to optimize bead shape and/or bead quality.
摘要:
A method and system to start and/or stop a hot wire process. A hot wire system includes a filler wire feeder that includes a contact tube for holding a filler wire, a wire feed mechanism, a power supply for applying a heating current to the wire; and a controller coupled to the feed mechanism and the power supply. The controller is configured for regulating the heating current to the wire and locating the wire with respect to the workpiece for forming a molten puddle with an arc to initiate a hot wire process. The controller may also be configured to regulate the feed of the wire to the molten puddle and one of regulate and/or pulse the current to the wire so as to retract the wire out of the molten puddle in a stable manner when stopping the hot wire process.
摘要:
A system and method processes a structure comprising embedded material. The system includes a laser adapted to generate light and to irradiate an interaction region of the structure. The system further includes an optical system adapted to receive light from the interaction region and to generate a detection signal indicative of the presence of embedded material in the interaction region. The system further includes a controller operatively coupled to the laser and the optical system. The controller is adapted to receive the detection signal and to be responsive to the detection signal by selectively adjusting the laser.
摘要:
The present invention is a process and apparatus for producing nano-scale particles using the interaction between a laser beam and a liquid precursor solution. There are two embodiments. The first embodiment includes the use of a solid substrate during the laser-liquid interaction. In this embodiment the laser beam is directed at the solid substrate which is immersed in the liquid precursor solution and rotating. The second embodiment includes the use of a plasma during the laser-liquid interaction. In the second embodiment, a mixture of a liquid precursor and a carrier gas is injected into a laser beam. Injection of the mixture can be performed either perpendicular or parallel to the laser beam. The apparatus for injecting the liquid precursor and carrier gas into the laser beam includes a plasma nozzle designed to allow the laser beam to enter the plasma nozzle so that the laser beam may irradiate what is flowing through the plasma nozzle to create a plasma flow. The carrier gas allows for the formation of a plasma by its interaction with the laser beam. The liquid precursor is allowed to atomize into fine droplets. These fine droplets are exposed to the laser beam along with the plasma. The photon energy from laser beam and plasma energy induce the breaking of the molecular bond of the liquid precursor which results in the formation of ultra-fine elemental powders.
摘要:
A method irradiates an interaction region of an inhabitable structure with laser light to remove material from the structure. The method includes releasably affixing an anchoring mechanism to the structure by vacuum pressure. The method further includes releasably affixing the anchoring mechanism to a laser head configured to receive laser light from a laser generator, such that the laser head is in a drilling position relative to the interaction region. The method further includes receiving the laser light from the laser generator and directing the laser light to the interaction region of the structure. The method further includes confining the material and removing the material from the interaction region resulting from irradiating the structure with the laser light.
摘要:
A detection system is used during irradiation of an interaction region of a structure with laser light. The structure includes embedded material. The detection system includes means for receiving light emitted from the interaction region. The detection system further includes means for separating the received light into a spectrum of wavelengths. The detection system further includes means for analyzing at least a portion of the spectrum for indications of embedded material within the interaction region.
摘要:
A laser head is adapted to irradiate an interaction region of an inhabitable structure with laser light to remove material from the structure. The laser head includes a housing. The laser head further includes a connector coupled to the housing and optically coupled to a laser generator. The connector is adapted to transmit laser light from the laser generator. The laser head further includes at least one optical element contained in the housing and optically coupled to the connector. The optical element is adapted to receive laser light from the connector. The laser head further includes a containment plenum coupled to the housing. The containment plenum is optically coupled to the optical element to receive the laser light from the optical element. The containment plenum is adapted to confine the material and remove the material from the interaction region resulting from irradiating the structure with the laser light.
摘要:
A detection system is used during irradiation of an interaction region of a structure with laser light. The structure includes embedded material. The detection system includes a focusing lens positioned to receive light emitted from the interaction region. The detection system further includes an optical fiber optically coupled to the focusing lens to receive light from the focusing lens. The detection system further includes a spectrometer optically coupled to the optical fiber to receive light from the optical fiber. The spectrometer is adapted for analysis of the light for indications of the embedded material within the interaction region.
摘要:
The present invention is a process and apparatus for producing nano-scale particles using the interaction between a laser beam and a liquid precursor solution. There are two embodiments. The first embodiment includes the use of a solid substrate during the laser-liquid interaction. In this embodiment the laser beam is directed at the solid substrate which is immersed in the liquid precursor solution and rotating. The second embodiment includes the use of a plasma during the laser-liquid interaction. In the second embodiment, a mixture of a liquid precursor and a carrier gas is injected into a laser beam. Injection of the mixture can be performed either perpendicular or parallel to the laser beam. The apparatus for injecting the liquid precursor and carrier gas into the laser beam includes a plasma nozzle designed to allow the laser beam to enter the plasma nozzle so that the laser beam may irradiate what is flowing through the plasma nozzle to create a plasma flow. The carrier gas allows for the formation of a plasma by its interaction with the laser beam. The liquid precursor is allowed to atomize into fine droplets. These fine droplets are exposed to the laser beam along with the plasma. The photon energy from laser beam and plasma energy induce the breaking of the molecular bond of the liquid precursor which results in the formation of ultra-fine elemental powders.