A method for synergistic control of shape and properties and surface treatment of metal additive manufacturing parts

By optimizing parameters through big data simulation systems and genetic algorithms, and combining multi-process processing, the problem of difficulty in coordinating the forming accuracy and internal performance of metal additive manufacturing parts has been solved, achieving high-precision and high-performance manufacturing of parts.

CN122299018APending Publication Date: 2026-06-30NANTONG JIASHENG PRECISION MANUFACTURING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANTONG JIASHENG PRECISION MANUFACTURING CO LTD
Filing Date
2026-03-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing metal additive manufacturing technologies, it is difficult to coordinate the forming accuracy and internal properties of the parts, resulting in large forming deviations, internal pores, and concentrated residual tensile stress, which affect the load-bearing capacity and dimensional accuracy of the parts.

Method used

By constructing a part simulation system using big data and combining it with genetic algorithm optimization, the optimal shape and property synergistic control parameters are obtained. Processes such as additive manufacturing, mechanical cutting, heat treatment, plasma electrolytic oxidation and polishing are used to form a dense ceramic oxide film, thereby improving the forming accuracy and internal properties of the parts.

Benefits of technology

It significantly improves the overall performance of the parts, eliminates residual tensile stress, refines surface grains, increases the surface hardness and corrosion resistance of the parts, ensures that the forming accuracy and internal mechanical properties of the parts meet the standards simultaneously, and improves the product qualification rate and production stability.

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Abstract

This invention discloses a method for synergistic control of shape and properties and surface treatment of metal additive manufacturing parts, relating to the field of metal part processing technology. The processing steps are as follows: S1, constructing a part simulation system based on big data, simulating parameters for the current part material and shape, and obtaining optimal shape and property synergistic control parameters; S2, using additive manufacturing equipment, melting and solidifying metal powder layer by layer based on the obtained shape and property synergistic control parameters to obtain a metal additive manufacturing part blank; S3, removing the support structure on the part blank by mechanical cutting, and grinding and smoothing the cut edges; placing the part after support removal in a heat treatment furnace. This invention utilizes the synergistic effect of a dense ceramic oxide film formed by plasma electrolytic oxidation and a laser impact shot peening modification layer to significantly improve the surface hardness, corrosion resistance, and wear resistance of the part; multi-process synergistic enhancement of part performance, closed-loop controllable process, wide adaptability, and improvement of product qualification rate and production stability.
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