METHOD OF LASER SURFACING OF COPPER-NICKEL ALLOYS ON DETAILS MADE OF ALUMINIUM BRONZE Russian patent published in 2009 - IPC B23K26/34 B23K26/32 B23K26/42 

FIELD: metallurgy.

SUBSTANCE: invention relates to laser surfacing process of corrosion protection coating and can be used in mechanical engineering at treatment of working surfaces of parts made of aluminium bronzes including details of ship reinforcement. Method includes delivery of metallic powder and simultaneous treatment of surface by laser ray with power radiant density 10⁴-10⁶ watt/cm² during 0.0005-2.0 s. Preliminary on part surface it is created intermediate layer of depth not less two diametres of laser ray by means of surface treatment by laser ray with power radiant density 10⁴-10⁶ watt/cm² and traverse speed 0.2-10.0 mm/s. During the process of overlaying welding depth of metal penetration is kept in the range not more 0.8 of intermediate layer depth.

EFFECT: providing of cracks absence in built-up material and fusion area at laser building-up on aluminium bronze of copper-nickel alloys with content of nickel more than 10%.

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