Multi-material variable-stiffness structural efficient collaborative additive manufacturing method

Abstract

The invention discloses a multi-material variable-stiffness structural efficient collaborative additive manufacturing method, and belongs to the technical field of composite additive manufacturing. The method comprises the steps that firstly, a part structure is divided into a lightweight part with a complex pore structure and a solid part required to be rapidly machined and manufactured, a selective laser melting technology is used for preparing the lightweight part, the lightweight part is subjected to surface treatment, and finally, the arc additive manufacturing technology is used on the lightweight part to prepare the solid part. According to the method, a part in the complex shape can be rapidly prepared, the part machining period can be shortened, the production cost is reduced, themethod fully exerts the advantages of the selective laser melting forming technology and the arc additive manufacturing technology, the additive manufacturing level of large parts and multi-materialparts can be improved, and the new direction and field can be developed for additive manufacturing development.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a multi-material, variable stiffness structure efficient and collaborative additive manufacturing method. Background technique [0002] Selected area laser melting molding technology is a kind of additive manufacturing technology. Using laser as the heat source, the metal powder bed is scanned layer by layer according to the path planned in the 3D model. The scanned metal powder is melted and solidified to achieve metallurgical bonding. Finally, the metal parts designed by the model are obtained. Arc additive manufacturing technology is an advanced additive manufacturing technology that uses electric arc as the heat source and adopts the principle of layer-by-layer cladding to deposit molten wire layer by layer, and gradually form metal parts from line-surface-body according to the three-dimensional digital model. . [0003] The selective laser melting molding te...

AI Technical Summary

Problems solved by technology

[0003] The selective laser melting molding technology can realize the preparation of parts with complex structures such as porous lattices. The prepared samples have fine structures and smooth surfaces, but the molding efficiency is low and the cost is high. It is difficult to prepare large structures with variable stiffness. components

[0004] Arc additive manufacturing technology can realize the preparation of larger structural parts, which has the advantages of high molding efficiency and low cost, but it is difficult to form complex structures such as porous lattices in arc additive manufacturing.

Images