Process database construction method for electric arc additive manufacturing deposition layer

Abstract

The embodiment of the invention provides a process database construction method for an electric arc additive manufacturing deposition layer. The method is characterized by comprising the following steps of: establishing corresponding marks and diameters according to the types of used molten wires; establishing a mark corresponding to a substrate material; establishing an electric arc additive heat source type and a process mode thereof; establishing a shielding gas type; inputting the width of a single-channel deposition layer; establishing a matched deposition layer morphology curve and a feature size thereof; and establishing related process parameters of an electric arc additive. Matching of the morphology and the size of an arc additive manufacturing deposition layer with the material and the state of the substrate, the type of an arc additive heat source and process mode parameters, a swing parameter, an arc starting / extinguishing parameter, the distance between the end face of a contact tube and the deposition layer, an interlayer temperature range, the initial temperature of the substrate and the flow velocity of protective gas is realized; the requirement for the width of the preset deposition layer is met, meanwhile, active control over the arc additive manufacturing forming quality is achieved, morphology change rules of the deposition layer can be predicted, the surface quality, forming precision and forming efficiency of an electric arc additive manufacturing formed part are improved, and the mechanical property of the formed part can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of arc additive manufacturing of aerospace structural parts, and relates to a process database construction method for arc additive manufacturing deposition layers. Background technique [0002] Arc Additive Manufacturing (Wire and Arc Additive Manufacture, WAAM) uses an arc as a heat source to manufacture dense metal components by layer-by-layer surfacing. Compared with the traditional manufacturing process, there is no need for molds, the overall manufacturing cycle is short, and the degree of flexibility is high. It can realize digital, intelligent and parallel manufacturing, and has a fast response to design. It is especially suitable for the manufacture of small batches and various products. ;Compared with laser, electron beam, and plasma as heat source additive manufacturing technology, WAAM technology has the advantages of high density of formed components, high deposition rate, high utilization rate ...

AI Technical Summary

Problems solved by technology

Although domestic and foreign scholars have made positive progress, the process parameter database of arc additive manufacturing deposition layer has not yet been established.

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