A method for stripping ceramic from a component includes applying a liquid to a ceramic coating of an outer surface of the component. The method also includes directing a plurality of laser pulses at the ceramic coating with the applied liquid in order to spall the ceramic coating from the component.

In one embodiment, a laser peening apparatus includes an output unit (41) configured to output laser light (6); a light-guide unit (31) configured to guide the outputted laser light (6); a condenser lens (42) configured to condense the guided laser light (6); an irradiation nozzle (32) configured to radiate the condensed laser light (6); a focus-change unit (50) configured to change a focal position of the laser light (6) based on distance from an irradiation target (4, 5) of the laser light (6) to the irradiation nozzle (32); and a control unit (66) configured to apply laser peening by radiating the laser light (6) toward the irradiation target (4, 5) which is in contact with water.

Provided are ceramic cutting methods and equipment: a beam irradiation unit for irradiating a beam of a wavelength absorbed by a pattern formed on an upper surface of a ceramic and partially absorbed by the ceramic; a coolant spraying unit for spraying a coolant onto the ceramic irradiated with the beam, wherein the pattern is removed by heating and cooling the ceramic , and is cut by reducing thermal damage by using the stress caused by the recrystallization of an upper layer or all of the ceramic or the stress generated by the thermal expansion and contraction of the upper layer or the entire ceramic, thereby recrystallizing the ceramic by heating and cooling the ceramic , or cutting the ceramic by heating until the ceramic melts, and cooling to apply thermal stress to the inside of the ceramic, followed by an additional separation process of a ceramic material without loss.

Reliable coupling of a high-power laser beam into a liquid-jet in a liquid-jet guided laser system can be achieved with high lifetime performance of the nozzle and the protection window, through setting the parameters of the liquid-jet guided laser system according to an optimum relationship that links the focus point of the laser, the focus cone angle, the laser beam energy distribution profile and the nozzle geometry.

A method for producing a diffusion cooling hole extending between a wall having a first wall surface and a second wall surface includes forming a cooling hole inlet at the first wall surface, forming a cooling hole outlet at the second wall surface, forming a metering section downstream from the inlet and forming a multi-lobed diffusing section between the metering section and the outlet. The inlet, outlet, metering section and multi-lobed diffusing section are formed by laser drilling, particle beam machining, fluid jet guided laser machining, mechanical machining, masking and combinations thereof.

A method for producing a diffusion cooling hole extending between a wall having a first wall surface and a second wall surface includes forming a cooling hole inlet at the first wall surface, forming a cooling hole outlet at the second wall surface, forming a metering section downstream from the inlet and forming a multi-lobed diffusing section between the metering section and the outlet. The inlet, outlet, metering section and multi-lobed diffusing section are formed by laser drilling, particle beam machining, fluid jet guided laser machining, mechanical machining, masking and combinations thereof.

A method and device for laser cladding by independently heating the cladding material and the surface of the workpiece consist in formation of the series of parallel annular laser beams, possibly different wavelengths, with an adjustable distribution of laser radiation power across the annular beams. The annular beams are transformed into a series of conical beams which are separately focused along a single optical axis, along which the cladding material is fed. The device can be supplemented with a cylindrical mirror for the multipass laser radiation through the stream of cladding material with the possibility of the laser radiation return to the laser resonator.

A method and device for laser cladding by independently heating the cladding material and the surface of the workpiece consist in formation of the series of parallel annular laser beams, possibly different wavelengths, with an adjustable distribution of laser radiation power across the annular beams. The annular beams are transformed into a series of conical beams which are separately focused along a single optical axis, along which the cladding material is fed. The device can be supplemented with a cylindrical mirror for the multipass laser radiation through the stream of cladding material with the possibility of the laser radiation return to the laser resonator.

An apparatus for introducing a parting agent into a hollow workpiece before or during processing of the hollow workpiece by using a laser processing machine, includes an introduction section with a nozzle for dispensing the parting agent and a centering element which is disposed on the introduction section and serves for centering the introduction section within the hollow workpiece. A loading station, a system and a method are also provided.

An apparatus for introducing a parting agent into a hollow workpiece before or during processing of the hollow workpiece by using a laser processing machine, includes an introduction section with a nozzle for dispensing the parting agent and a centering element which is disposed on the introduction section and serves for centering the introduction section within the hollow workpiece. A loading station, a system and a method are also provided.