Ultrasonic impact and deposition forming integrated device and technology for improving structure and performance of additive manufacturing metal component

Abstract

The invention provides an ultrasonic impact and deposition forming integrated device and technology for improving the structure and performance of an additive manufacturing metal component, and belongs to the field of metal material additive manufacturing. A deposition forming device and an ultrasonic impact tool head are coaxially assembled, the impact path can be synchronously changed along withany machining path, an annular ultrasonic micro-forging tool head carries out synchronous impact forging along with a deposition layer in the metal deposition process, on the basis that plastic deformation happens to the deposition layer, the novel integrated impact device can promote dynamic recrystallization happening in a high-temperature area above the recrystallization temperature, and therefore grains are refined, material defects are reduced, and residual stress is eliminated. Compared with an existing device, according to the integrated device, the acting depth and the impact effect can be greatly improved, meanwhile, complex workpiece forming path planning and the ultrasonic impact path can be combined into one, the machining procedure of the complex metal component is greatly simplified, and design and manufacturing of a high-end machining center for forging increasing and reducing composite manufacturing are facilitated.

Description

technical field [0001] The invention belongs to the field of metal additive manufacturing, and specifically relates to a new integrated device and technology of ultrasonic impact and deposition forming (laser fuse, arc fuse, laser melting powder) for improving the structure and performance of additively manufactured metal components, suitable for Laser coaxial fused wire deposition forming, laser coaxial powder feeding deposition forming, arc fused wire deposition forming, electron beam fused wire deposition forming and plasma deposition forming additive manufacturing. Background technique [0002] Additive manufacturing, also known as "3D printing technology", refers to the use of computer software to establish a three-dimensional model of parts, and to process discrete materials (powder, liquid, wire, etc.) A low-loss stacking processing technology. [0003] Metal and alloy materials are accompanied by complex non-equilibrium physical metallurgical processes in the rapid ...

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Problems solved by technology

[0009] The present invention proposes a new type of ultrasonic impact and deposition head integrated composite technology and device for improving the metal structure and performance of additive manufacturing, which is used to improve the plasticity and fatigue life of metal components, and solve the problem of thick, tree branches in the field of metal additive manufacturing. Crystal-based, microstructural defects, and workpieces with large residual stress are prone to deformation and cracking.

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