Auxiliary wire filling GMA additive manufacturing device and method for gradient material manufacturing

Abstract

The invention discloses an auxiliary wire filling GMA additive manufacturing device and method for gradient material manufacturing. The device comprises a GMAW arc welding power source, a wire feeder, a GMAW welding gun, two wire guiding nozzles and two auxiliary wire filling wire feeders. The wire feeder is used for conveying a consumable electrode welding wire, and a feeding hose of the wire feeder is connected with the GMAW welding gun. The GMAW welding gun is vertically arranged over a molten bath and used for guiding the consumable electrode welding wire into the molten bath, and the generated arc is located between the consumable electrode welding wire and the molten bath. The two auxiliary wire filling wire feeders are used for conveying homogenous filling welding wires and heterogeneous filling welding wires, and feeding hoses of the two auxiliary filling wire feeders are connected with the two wire guiding nozzles correspondingly. The two wire guiding nozzles are fixed to the front end of the GMAW welding gun and used for guiding the homogenous filling welding wires and the heterogeneous filling welding wires to be fed into the molten bath. The auxiliary wire filling GMA additive manufacturing device and method solve the problem that in the traditional GMA additive manufacturing process, heat accumulation of a formed part is serious, and continuous component adjustment cannot be achieved.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency arc additive manufacturing, and relates to a GMA additive manufacturing device and method, in particular to an auxiliary wire-filling GMA additive manufacturing device and method for gradient material manufacturing. Background technique [0002] Gas metal arc (GMA) additive manufacturing is a metal material additive manufacturing process. This process uses a welding arc as a heat source and a metal welding wire as a filling material. Low, high deposition efficiency, high material utilization, excellent mechanical properties of the formed workpiece and other advantages. [0003] However, the traditional GMA additive manufacturing process has irrationality in energy distribution. While the deposition current heats and melts the wire, it also creates excessive heat input into the formed part. During the layer-by-layer cladding process, the formed part has experienced multiple heating, and t...

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Problems solved by technology

[0006] In order to solve the problem of serious heat accumulation of formed parts caused by the irrational energy distribution in the traditional GMA additive manufacturing process, and the types of processing materials are limited, the composition of the deposition path can only be changed by changing the welding wire, and the composition cannot be realized. For the problem of continuous adjustment, the present invention provides an auxiliary wire-filling GMA additive manufacturing device and method for the manufacture of gradient materials

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