Additive manufacturing method based on zoned process optimization and compensation

By using additive manufacturing methods that optimize and compensate for zonal processes, the forming challenges of complex and delicate structures have been solved, achieving high-precision and low-defect manufacturing results. This method is adaptable to a variety of complex structures and broadens the application scenarios of metal additive manufacturing.

CN122184390BActive Publication Date: 2026-07-14HANGZHOU YIJIA 3D ADDITIVE TECH CO LTD +1
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Patent Information

Application Number
CN202610663161.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-05-14
Publication Date
2026-07-14
Estimated Expiration
2046-05-14

AI Technical Summary

Technical Problem

Existing additive manufacturing technologies suffer from several problems when manufacturing complex and delicate structures such as thin-walled structures with sharp corners, micro-gaps, transverse holes, and lattices. These problems include warping and slag buildup in overhanging areas, over-melting and deformation of thin-walled structures, loss of lattice features, lack of systematic optimization of process parameters, and inaccurate compensation. These issues make it difficult to meet the high-precision requirements of high-end manufacturing.

Method used

A method based on partitioned process optimization and compensation is adopted. By dividing the region differently, optimizing parameters, and offset compensation, the main region, the lower surface region, and the compensation region are identified respectively. The scanning strategy and parameters are configured in a targeted manner. Combined with energy density optimization, layer thickness reduction, powder particle size refinement, and preheating temperature adjustment, structural offset compensation is performed to avoid additional support structures.

Benefits of technology

It improves the forming accuracy and surface quality of complex and delicate structures, reduces material consumption and post-processing damage, shortens the production cycle, enhances process adaptability, reduces the risk of thermal stress deformation, and improves the mechanical properties and manufacturing efficiency of parts.

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Abstract

The application belongs to the technical field of additive manufacturing, and particularly relates to an additive manufacturing method based on partition process optimization and compensation, which comprises the following steps: S1, classifying parts and dividing different parts into different printing areas; S2, separately configuring process parameters for the lower surface area, layer by layer model slicing for the compensation area, and judging whether any model slice needs compensation; S3, separately printing multiple different areas based on respective process parameters; S4, performing structural bias compensation and optical compensation on the printed model based on the actual size of the part; and S5, detecting the upper surface of the part as a machining reference surface. The method of the application can meet the use requirements of high-end manufacturing for precision parts without additional support, not only reducing the consumption of metal powder, but also avoiding damage to the surface of the part in the support removal process, and improving manufacturing efficiency.
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