METHOD FOR LASER IMPACT PROCESSING OF METAL WORKPIECE Russian patent published in 2025 - IPC B23K26/356 C21D7/06 

FIELD: performing operations.

SUBSTANCE: invention relates to thermal metal processing and can be used for surface hardening and increasing wear resistance of metal parts of machines and tools by means of laser processing. Method includes placing a workpiece on a substrate and a flat element above the workpiece with the formation of a gap between it and the substrate, forming a layer of light-absorbing material on the surface of the workpiece, having the possibility of absorbing laser radiation, creating a stream of light-transmitting transparent liquid flowing along the working surface of the substrate, including the processed surface of the workpiece, and filling the entire gap between the substrate and the flat element, the layer of light-absorbing material covering the surface of the workpiece is irradiated through the layer of light-transmitting transparent liquid with pulsed laser radiation with a given energy and a given diameter of the laser spot. At that, the workpiece is placed on the grounded substrate in the recess corresponding to the workpiece dimensions, flush with the substrate surface, wherein for coating surface of workpiece using electroconductive light-absorbing material, and as said flat element, a high-voltage electrode is used, to which, as well as to the substrate, a high-voltage pulse generator is connected, including a high-voltage source, a storage capacitor and a switching element, wherein by means of said generator nanosecond high-voltage pulses are supplied to the high-voltage electrode, initiating the corresponding electric discharges in the layer of said liquid, which are supplied by means of a synchronization unit connected to the laser and to the said switching element, synchronized with simultaneous supply of laser radiation pulses.

EFFECT: use of the invention allows to expand the technological capabilities of the metal processing method.

4 cl, 3 dwg