8 results about "Laser peening" patented technology

The application provides a laser shot forming system and method for measuring and planning integration, comprising a laser scanning forming module, an in-situ measurement module and a process planning module; the in-situ measurement module is used for measuring the geometric surface profile of a forming workpiece in-situ, and transmitting the surface profile data to the process planning module; the process planning module calculates the deviation from a target surface profile according to the geometric surface profile obtained by the in-situ measurement module, and plans a process scheme for laser shot forming; and the laser scanning forming module realizes laser shot forming of the workpiece according to the planned process scheme for laser shot forming. The system and method form a closed-loop process flow of in-situ measurement, process planning and laser shot forming, and realize the integrated laser shot precise forming of a large workpiece in the mode of "measurement-planning-forming".

This application discloses a composite shot peening strengthening method for aerospace load-bearing structural components. The method includes dividing the shape-dependent regions or areas with high tensile stress distribution of the aerospace load-bearing structural components into regions and designing composite shot peening paths; designing process parameters for CNC mechanical microparticle shot peening and laser shot peening; performing CNC mechanical microparticle shot peening and laser shot peening; and finally, inspecting the shot peening strengthening quality of the aerospace load-bearing structural components. This application provides a composite shot peening strengthening method for aerospace load-bearing structural components, which can achieve composite shot peening strengthening of aerospace load-bearing structural components, increasing the residual compressive stress layer on the surface of the structural components while reducing surface roughness, effectively and quickly realizing composite shot peening strengthening of load-bearing structural components.

The present invention addresses a problem in which a metal is easily corroded by rust when water is used as a plasma confinement layer in a laser peening method utilized as a metal surface modification method.　This laser processing method comprises a step of applying or affixing a gel-like substance to a processing region of an object to be processed, and a step of repeatedly irradiating the processing region with a laser. Because the laser processing method allows use of a gel-like substance containing no water as the plasma confinement layer, corrosion of the metal, which is the object to be processed, due to rust can be avoided. The gel-like substance is suitably used as a physical gel.

A soft magnetic alloy ribbon is made of a Fe-based soft magnetic alloy and includes a first laser peening trace row and a second laser peening trace row each of which includes a plurality of laser peening traces in a row in a first direction and which are arranged adjacent to each other in a second direction intersecting the first direction, and a domain wall extending in a third direction, in which D0<D1 where a straight line at an equal separation distance from the first laser peening trace row and the second laser peening trace row is defined as a central line, a straight line which has a first distance where a distance from the first laser peening trace row is shorter than the separation distance is defined as a first reference line, a width of the domain wall at a position intersecting the central line is defined as D0, and a width of the domain wall at a position intersecting the first reference line is defined as D1.

This invention discloses a method, device, terminal equipment, and storage medium for preventing tooth breakage based on laser peening, belonging to the field of gear surface strengthening technology. The method involves: acquiring the pulsed laser parameters and impact path of the gear to be treated during laser peening; providing an energy absorption layer at the root of the gear tooth, which is covered by a constraint layer; generating a laser scanning command based on the pulsed laser parameters and impact path, and sending the laser scanning command to a laser generator to control the laser beam to scan, so that the laser beam penetrates the constraint layer and irradiates the energy absorption layer; after being irradiated, the energy absorption layer absorbs laser energy to form plasma, and the plasma generates an inwardly propagating shock wave under the constraint of the constraint layer, inducing plastic deformation at the gear tooth root position and forming a residual stress layer on the surface of the gear tooth root. Therefore, by implementing this invention, the problem of insufficient depth of the residual compressive stress layer on the tooth root surface in the prior art can be solved.

This invention relates to a method for preparing an arc-shaped water-collecting surface using laser shot peening assisted by a pressurized gas environment. The method includes placing a sealed reaction chamber in a first pressurized gas environment, irradiating the surface of an aluminum plate with a high-energy short-pulse laser under the influence of this environment to prepare a hydrophilic arc-shaped water-collecting region, discharging the gas from the sealed reaction chamber, injecting He gas to maintain this for ten minutes, and then placing the sealed reaction chamber in a second pressurized gas environment. Under the influence of this second pressurized gas environment, irradiating the surface of the aluminum plate with a low-energy short-pulse laser to prepare an arc-shaped superhydrophobic region. This process is repeated alternately. This method facilitates the formation of a denser micro / nano structure on the surface of the aluminum alloy, enabling in-situ generation of carbon / oxygen-based reinforcing phases and further improving the mechanical properties of the aluminum alloy water-collecting surface.

This invention discloses a GH4169 high-temperature alloy component and its laser shot peening-cladding repair and application. The process includes pretreatment of the GH4169 high-temperature alloy substrate surface to be repaired; impact strengthening of the repaired area using laser shot peening; and subsequent material deposition repair using laser cladding in the pretreated area to obtain a cladding repair layer. Under the thermal cycling effect of laser cladding, the high-density lattice defects pre-placed by laser shot peening act as heterogeneous nucleation cores, promoting the formation of fine equiaxed grain bands at the substrate / cladding layer interface and creating a gradient microstructure of fine-grained to coarse-grained to fine-grained in the heat-affected zone. This invention significantly improves the substrate / cladding layer interface microstructure, reduces grain coarsening in the heat-affected zone, mitigates the adverse effects of residual tensile stress, and enhances the load-bearing capacity of the repaired area. The resulting repaired component exhibits higher microhardness and tensile strength, making it suitable for life-extending repair of aero-engine blades, casings, seals, and other critical GH4169 high-temperature alloy components.

This invention relates to an ion implantation process for wear-resistant surface modification of high-strength and tough titanium alloy plates, belonging to the field of alloy surface treatment technology. The process includes: surface pretreatment of TC4 titanium alloy plates, deposition of a yttrium-containing Ti-Y composite coating using magnetron sputtering, laser peening of the coating, and boron ion implantation. This invention achieves a composite modified layer on the titanium alloy surface with a gradient transition in hardness and toughness through Ti-Y coating toughening, laser peening to construct diffusion channels and residual compressive stress fields, and boron ion implantation to form an ultra-hard TiB / TiB2 phase. This effectively solves the problems of shallow ion implantation depth and brittle, easily peeling hardened layers in traditional methods, significantly improving wear resistance while maintaining the toughness of the matrix.