METHOD OF LASER CUTTING OF METALS OR ALLOYS Russian patent published in 2013 - IPC B23K26/38 

FIELD: process engineering.

SUBSTANCE: invention relates to metal or alloy laser cutting and may be used in various branches of machine building, medicine, etc. Plotted is calibration curve of metal or alloy fraction sprayed by laser radiation at definite power level trapped by fluid, in fact, translucent for laser beam and dependent upon depth of engraved metal or alloy surface in fluid. Then metal to be cut is dipped in fluid to depth defined by said calibration curve. Metal or alloy is penetrated in line of cutting by laser beam. Said laser beam is translated and, at a tone, rotated with radius R. Said radius and angular rotation speed ω are defined from relationship R=d/2-r, mcm and ω>V/2r, kHz, where: D is width of laser beam cutting width, mcm; r is laser beam radius, mcm; V is translation speed, m/s.

EFFECT: higher quality, no harmful effects to environments.

8 cl, 3 dwg