A laser synchronous processing method and device of additive-semi-solid strengthening-subtractive

By collecting the temperature and width of the semi-solid region of the material in real time, calculating the real-time viscosity using a viscosity derivation model, and dynamically adjusting the laser parameters, the three processes are synchronized in time and space. This solves the problems of process sequence separation and insufficient parameter adjustment in existing technologies, and improves the efficiency and accuracy of laser composite processing.

CN122142343APending Publication Date: 2026-06-05JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Filing Date
2026-01-20
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing laser composite processing technology suffers from process sequence separation, making it impossible to achieve continuous and seamless integration of additive, semi-solid strengthening, and subtractive processing. This results in low processing efficiency, missed optimal strengthening opportunities, and a lack of quantitative basis for adjusting various process parameters based on the real-time state of the material. Consequently, the coordination is poor, and the system integration and intelligence levels are insufficient, making it difficult to cope with complex paths and dynamic changes, thus limiting processing accuracy and stability.

Method used

By collecting the temperature and width of the semi-solid region of the material in real time, calculating the real-time viscosity using a viscosity derivation model, and dynamically adjusting the pulsed laser strengthening and subtraction parameters, the three processes are synchronized in time and space. Combined with the built-in collaborative controller, the parameters are adaptively linked to ensure the stability and consistency of the processing.

Benefits of technology

It achieves seamless synergy between additive manufacturing, semi-solid strengthening, and laser subtraction, improving processing efficiency and the overall mechanical properties of parts, refining the internal grain structure, and improving the service life and processing accuracy of parts.

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Abstract

The application discloses a kind of additive-semi-solid strengthening-subtractive laser synchronous processing method and device, comprising: the first time required for target material to be cooled from molten state to semi-solid and the second time required for target material to be cooled from semi-solid to completely solid are obtained;According to the preset relative motion speed of processing path, the first time and the second time, the first spacing between continuous laser additive head and pulsed laser strengthening head and the second spacing between pulsed laser strengthening head and pulsed laser subtractive head are calculated and set respectively;In the process of processing, the real-time temperature and real-time width of semi-solid zone when the molten pool area formed by continuous laser additive head moves to the position under pulsed laser strengthening head are collected in real time;Based on the real-time temperature and real-time width of semi-solid zone, the real-time viscosity of semi-solid zone is calculated through the built-in viscosity derivation model.The method and device of the application improve the processing efficiency, mechanical properties and process consistency of parts.
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Citation Information

Patent Citations

  • Full-laser additive and subtractive composite manufacturing method and full-laser additive and subtractive composite manufacturing device

    CN119609158A