A laser welding method using a laser welding jig having a plurality of pressing parts, includes a step of placing a second member on a first member; a step of pressing the second member with the plurality of pressing parts in a direction toward the first member to thereby form a gap between the first member and the second member at most 300 m; and a first welding step of laser-welding the first member and the second member by irradiating on a surface of the second member at a location between the pressing parts with laser light while conducting the step of pressing.

A method for monitoring the energy density of a laser beam using parameters of the laser beam including regularly applying the laser beam to a reference substrate and measuring, with each application, the resulting light intensity; identifying a change in the light intensity on the reference substrate between at least two measurements; and, when the change in the light intensity is higher than a predetermined threshold, determining the unstable parameter or parameters of the energy density of the laser beam.

Systems and methods for producing a textured pattern on a surface of a part using a laser. The part or laser may be rotated while forming the textured pattern to create a continuous textured pattern on a surface of a part. The continuous textured pattern may be substantially uniform over the entire pattern. A laser texturing system may also include an optical scanner. A first region of the surface of the part may be scanned using a first laser beam. One or more laser texturing parameters or a simulated geometric model may be created based on the scan of the first region. The textured pattern may be formed on the first region using a second laser beam. The textured pattern may be formed in accordance with the one or more laser texturing parameters or simulated geometric model.

Provided is a method of manufacturing a transfer molding roll having a fine periodic structure and a transfer molding roll, with which a continuous elongated pattern can be seamlessly formed on an object to be transferred, for example, a film. The method of manufacturing a transfer molding roll having a fine periodic structure includes: preparing a cylindrical metal base material (28); irradiating an outer circumferential surface (30) of the cylindrical metal base material with an ultrashort pulse laser; and forming a seamless circulating nano-periodic structure (34a, 34b, 34c) on the outer circumferential surface (30) of the cylindrical metal base material through irradiation of the ultrashort pulse laser to form a seamless circulating pattern (36, 38) configured to generate an optical interference color with the seamless circulating nano-periodic structure (34a, 34b, 34c).

A coated pane having a communication window, having: a. a base pane, b. a coating containing metal, c. a first grid plane and a second grid plane within the coating containing metal, wherein the first grid plane and the second grid plane have areas in which the coating is removed, in form of grid lines arranged in the manner of a mesh, the grid lines in the first grid plane on at least one long side transition into an open comb structure having teeth and the grid lines in the second grid plane on at least one long side transition into a closed comb structure, wherein the first grid plane is connected by means of at least one tooth of the open comb structure to the closed comb structure of the second grid plane.

A method of laser spot welding a workpiece stack-up (10) that includes at least two overlapping steel workpieces (12, 14, 150) is disclosed. The method includes directing a plurality of laser beams (24, 24, 24) at the top surface (20) of the workpiece stack-up to create a molten steel weld pool (92) that penetrates into the stack-up. The molten steel weld pool is then grown to penetrate further into the stack-up by increasing an overall combined irradiance of the laser beams while reducing the total projected sectional area (88) of the laser beams at a plane of the top surface of the workpiece stack-up. Increasing the overall combined irradiance of the laser beams may be accomplished by moving the focal points (66, 66, 66) of the laser beams closer to the top surface or by reducing the mean angle of incidence (86) of the laser beams so as to reduce the eccentricity of the individual projected sectional areas of the laser beams.

The present disclosure provides a method for preparing a superhydrophobic surface of an aluminum alloy through laser peening, including the following steps: coating a surface of the aluminum alloy as an absorption layer with an organic component-containing confinement layer to obtain a coated aluminum alloy, where the organic component-containing confinement layer is a mixed organic solution including 5 mL to 10 mL of perfluorooctyltriethoxysilane (FOTS), 100 mL to 200 mL of absolute ethanol, and 30 mL to 50 mL of distilled water; and subjecting a surface of the coated aluminum alloy to the laser peening to form the superhydrophobic surface.

Methods and compositions are provided for improving metal dusting corrosion, abrasion resistance and/or erosion resistance for various materials, preferably for applications relating to high-temperature reactors, including dense fluidized bed reactor components. In particular, cermets comprising (a) at least one ceramic phase selected from the group consisting of metal carbides, metal nitrides, metal borides, metal oxides, metal carbonitrides, and mixtures of thereof and (b) at least one metal alloy binder phase are provided. Ceramic phase materials include chromium carbide (Cr.sub.23C.sub.6). Metal alloy binder phase materials include ?-NiAl intermetallic alloys and Ni.sub.3Sn.sub.2 intermetallic alloys, as well as alloys that contain ?-Cr and/or ?-Ni.sub.3Al hard phases. Preferably, bimetallic materials are provided when the cermet compositions are applied using a laser, e.g., a laser cladding method such as high power direct diode (HPDD) laser, or by plasma-based methods such as plasma transfer arc (PTA) welding and powder plasma welding (PPW).

A laser ablation system comprises a volume configured to contain a workpiece and a carriage configured to move within the volume relative to a workpiece. The carriage comprises a clamping system, a laser enclosure, and a laser ablation work head within the laser enclosure. The clamping system is configured to clamp the workpiece and seal against a portion of the workpiece.

The invention relates to a method for welding between two metallic materials (2, 3) or for sintering of powder(s) (P), comprising the following steps: a/ fitting a solid plate (10), transparent at the emission wavelength(s) of a laser beam (F), between said laser (L) and at least one contact zone (4) between the metallic materials to be welded or at least one sintering zone of the powder(s); b/ emission of the laser beam, through the transparent plate, to perform welding of the materials in the contact zone(s) or sintering of powder(s) in the sintering zone(s).