Workpiece hammering reinforcing device during metal additive manufacturing and application method thereof

Abstract

The invention discloses a hammering strengthening device for a workpiece in a metal additive manufacturing process and a method for using the same. The device comprises a hammering strengthening device body, a linear motion component, a motion adjusting component, a locking component, and a hammering execution component. Hammering adjustment bracket, data processing and measurement control unit and base, using linear moving parts and control process based on process and working condition data to achieve follow-up hammering of workpieces in the process of metal additive manufacturing. The invention also discloses a use method with the same idea as the device, and provides a preferred process control process, which is beneficial to improve the molding process and improve the quality of the workpiece on the basis of the existing additive manufacturing system. The beneficial effects of the present invention are also that the uniformity of the structure of the molded part is improved, the mechanical properties are improved while the plasticity is enhanced, the initiation of cracks is suppressed, the fatigue life of the molded part is increased, the flatness of the surface of the molded layer is improved, and the dimensional accuracy of the molded part is effectively improved .

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a hammer strengthening device for workpieces in the process of metal additive manufacturing and a method for using the same. Background technique [0002] In the additive manufacturing process, computer design software is used to make a 3D model of the workpiece, and then the 3D model is layered and sliced ​​in the computer to discretize the 3D model into a series of 2D layers, and path planning and parameter optimization are performed on each layer, and then Transform a 3D model into a solid workpiece by scanning layer by layer with an energy source and adding material layer by layer. [0003] However, in the existing metal additive manufacturing process, the molten metal melts and solidifies rapidly under a huge temperature gradient, and may be in local areas such as between layers inside the workpiece, between different overlapping lanes and lanes, e...

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Problems solved by technology

[0003] However, in the existing metal additive manufacturing process, the molten metal melts and solidifies rapidly under a huge temperature gradient, and may be in local areas such as between layers inside the workpiece, between different overlapping lanes and lanes, etc. Produce various special internal metallurgical defects; such as local lack of fusion, air gaps, entanglement and precipitation pores, cracks, and seriously affect the internal quality and mechanical properties of the formed workpiece

[0004] In the existing metal additive manufacturing process, the top interface of the molten pool is similar to an ellipsoid, the bottom interface of the molten pool is approximately horizontal, and the temperature of the molten pool in

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