METHOD TO PROCESS METAL PIECE BY LASER BEAM Russian patent published in 1995 - IPC

FIELD: optical industry. SUBSTANCE: metal piece is subject by a liquid and laser beam is focused on its surface. In doing so, fluoride containing organic dissolver mixed with at least one organic dissolver of other class with δ₁-δ<+-

0,61,2 J^-1/2 cm^-3/2 is the liquid to improve operating properties by increasing threshold of plasma formation by increasing threshold of plasma formation. Where δ₁ is a parameter of solubility characterizing specific energy of cohesion of fluoride containing organic dissolver, corresponding maximum value of plasma formation threshold; δ is the similar parameter of organic dissolver solubility. A dissolver forming azeotropic mixture with fluoride containing organic dissolver is used as organic dissolver of another class. The dissolvers are mixed to azeotropic ratio. EFFECT: higher efficiency. 3 cl, 2 tbl