METHOD OF METAL PRODUCT MANUFACTURING BY LAYER-BY-LAYER LASER APPLICATION OF POWDER MATERIAL Russian patent published in 2015 - IPC B22F3/12 

FIELD: metallurgy.

SUBSTANCE: method involves the application of the first powder material and selective sintering in the specified sections of the layer. The first powder material is removed from non-sintered sections. To the space between the sintered sections of the layer of the first powder material there applied is a layer of the second powder material of the same thickness and it is selectively sintered in the same sections. The specified cycles are repeated till the full formation of a workpiece of the product. As the first powder material there used is a dielectric material forming (at sintering) a casting mould of the product being formed. As the second powder material there used is powder from a metal or an alloy of the product being formed. At application of the second powder material, the product being formed is used as an anode and between the product being formed and a laser nozzle electrode there excited is a pulse electric arc. After the full formation of the product workpiece its fusion and further crystallisation is performed in the formed casting mould.

EFFECT: improvement of the method.

11 cl, 3 dwg