Added material manufacturing method under vibration condition

Abstract

The invention proposes an added material manufacturing method under a vibration condition. In an arc wire feeding added material manufacturing or laser powder feeding melting added material manufacturing process, mechanical vibration with a certain frequency is synchronously introduced, so that parts are located in a micro vibrating state; and the mechanical vibration acts on a micro liquid-state molten bath formed in the added material manufacturing process to refine grains, so that the structure becomes more uniform, and such phenomenon as air holes, inclusions and incomplete fusion is reduced or even eliminated. Meanwhile, the vibration acts on metal just condensed, so that the stress generated by vibration and residual stress generated in the added material manufacturing process are superposed to generate local plastic deformation to achieve the purpose of reducing residual stress and deformation of added material manufacturing parts, and the added material manufacturing parts under vibration condition are more excellent in performances.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and more specifically is a method suitable for arc wire feeding additive manufacturing and laser powder feeding melting additive manufacturing. The platform is vibrated by an exciter installed on the additive manufacturing platform, In this way, the additive manufacturing forming is completed synchronously during the vibration process. Background technique [0002] Laser powder feeding melting additive manufacturing and arc wire feeding additive manufacturing are a new type of manufacturing technology based on the principle of layer-by-layer accumulation of discrete materials, and based on the product's 3D CAD model, by adding filling materials to accumulate product prototypes or parts layer by layer . Laser powder-fed melting additive manufacturing uses metal powder as the filling material, and arc wire-feeding additive manufacturing uses metal wire as the filling material. Both methods ca...

AI Technical Summary

Problems solved by technology

Larger internal stress will cause deformation, which will affect the processing accuracy of the parts. When the internal stress is too large, it will even cause the parts to crack and be scrapped.

[0006] To sum up, if the control is not proper, defects such as pores, inclusions, deformation and cracking will occur during the additive manufacturing process.

Images