METHOD OF RECONDITIONING OF PART OF TITANIUM ALLOYS Russian patent published in 2014 - IPC B23K26/34 B23P6/04 

FIELD: process engineering.

SUBSTANCE: invention relates to reconditioning of parts from titanium alloys by laser buildup and can be used in machine building for repair of worn-out parts. Titanium-based powder material layer 4 is applied on flaw 1 of part 2 via nozzle 3. Flow particles of said powder 5 I fed directly in zone 6 of laser beam effects 7. Protective gas 8 is used to protect against oxidation. Said powder I fed to article coaxially with laser beam 7. Material particles 5 delivered to article feature high temperature resulted from interaction with laser beam 7 to remelt article material and powder to eliminate aid flaw. Buildup is made by 4800-500 W laser beam at radiation rate of 800-100 mm/min and powder flow rate of 45-51 g/min. Under these conditions article material melting is minimum but in amount sufficient for strong adhesion between powder and article material. Structural-phase transitions occurred in buildup zone allow an optimum distribution of compression stresses in fused zone and that of thermal effects.

EFFECT: higher strength.

1 dwg, 1 tbl