Abstract: An in-laser wire feeding device having an inductive auxiliary heating function, comprising a wire feeding pipeline and a laser path unit. The wire feeding pipeline comprises upper and lower wire feeding pipes, and a gap zone is formed between the upper and lower wire feeding pipes. The in-laser wire feeding device further comprises a connecting piece which is located on one side of the gap zone and links the upper wire feeding pipe with the lower wire feeding pipe, an inductive heating coil, and a power supply component. The inductive heating coil comprises a coil body and a connecting part. The center line of the coil body, the center line of the upper wire feeding pipe and the center line of the lower wire feeding pipe are collinear, and the inner wall of the coil body can avoid laser beams reflected downwards by a reflecting mirror.

Abstract: A method for synchronous powder-feeding space laser cladding and three-dimensional forming includes: dividing a three-dimensional solid into a plurality of forming units according to a form simplification and nozzle cladding scanning accessibility principle, and dividing each forming unit into a plurality of layers; employing a single-beam gas-carried power-feeding mode in a hollow annular laser; controlling a mechanical arm (7) to drive an in-laser powder-feeding nozzle (1) to move and scan along a predetermined trajectory in a filling area and a boundary area of the layer; and sequentially conducting cladding and stacking formation of the layer for the entire unit. A device includes an inside-laser powder-feeding nozzle (1), a laser generator (6), a mechanical arm (7), a control module (4), a transmission optical fiber (5), a gas-carried powder feeder (3) and a gas source (2).