METHOD FOR RESURFACING MONOCRYSTALLINE COMPONENTS AND COMPONENTS OBTAINED THROUGH DIRECTIONAL CRYSTALLISATION Russian patent published in 2011 - IPC C30B13/08 C30B13/22 B23K26/34 F01D5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to technology of resurfacing monocrystalline metal component or metal component obtained through directional crystallisation, having thickness W_s less than 2 mm, in which a laser beam and a stream of metal powder of the same nature as the metal component are directed onto the component using a nozzle to obtain at least one layer of monocrystalline metal component or metal component subjected to directional crystallisation. The laser beam has power P and moves along the component at speed v. The laser beam and the stream of metal powder are directed onto the component coaxially and the ratio P/v is in a defined range. Supply of the power on the axis of the laser beam ensures high manoeuvrability of the nozzle and increases uniformity of the speed and melting for resurfacing. In case of resurfacing the component without pre-heating, the invention enables to significantly save time and simplify the process.

EFFECT: if pre-heating is used, the obtained components are more accurate.

11 cl, 5 dwg