METHOD FOR ADDITIVE WELDING AND MELTING MANUFACTURE OF THREE-DIMENSIONAL PRODUCTS AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC B23K31/00 B23K26/342 B23K37/02 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the method of additive manufacturing of three-dimensional products and installation for its implementation. Three-dimensional model of this product is created, divided in layers into calculated sections for the subsequent control of the process of layer-by-layer melting by a laser beam of the base material in the form of two wires of different refractoriness and diameters. First, the boundary layers of the product are formed by layer-by-layer welding with a laser beam of a more refractory wire and then fill the space between the boundary layers with a layer-by-layer melting with a laser beam of less refractory wire. Installation contains a structural support for maintaining the product during construction, the node supplying the base material to the construction zone and the laser node. Mentioned structural support is made in the form of a platform of refractory non-metal, placed in a sealed chamber with the possibility of rotation around its vertical axis and movement along it with the help of a positioner. Base material feed unit consists of a feeder for a more refractory wire, which can move along two mutually perpendicular horizontal axes, rotate around its vertical axis and rotate around the longitudinal axis of this device, as well as the feeder of a less refractory wire, which can move along two mutually perpendicular horizontal axes and rotate around its vertical axis. Laser unit consists of two laser optical heads mounted, respectively, on a feeder for a more refractory wire and on a feeder for a less refractory wire.

EFFECT: technical result consists in increasing the accuracy and purity of the surface of products of complex configuration, made by means of additive technology.

9 cl, 5 dwg, 1 tbl