A pulse electromagnetic field partition residual stress regulation method for a whole process of titanium alloy part manufacturing

By using a pulsed electromagnetic field zonal control method, the problem of uneven residual stress distribution during the manufacturing process of titanium alloy parts was solved, achieving precise control throughout the entire process and improving manufacturing accuracy and service performance of parts.

CN122452247APending Publication Date: 2026-07-24SICHUAN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Filing Date
2026-05-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the current manufacturing process of titanium alloy parts, the uneven distribution of residual stress leads to warping deformation, dimensional deviations, reduced fatigue life, and cracking failure. Existing control methods cannot provide differentiated treatment for different spatial zones and are not coupled with the entire manufacturing process. Relying on experience and trial and error results in low accuracy and poor stability.

Method used

The residual stress control method using pulsed electromagnetic field partitioning is adopted. By acquiring manufacturing process information, spatial partitioning is performed and stress control priorities are defined. A residual stress evolution model is constructed, and pulsed electromagnetic field parameters are adaptively matched. Combined with simulation prediction and closed-loop feedback correction, precise control of the entire process is achieved.

Benefits of technology

It enables precise control of different spatial partitions throughout the entire process of titanium alloy parts manufacturing, improving manufacturing accuracy and production efficiency, reducing energy consumption, simplifying the process flow, and enhancing the dimensional stability and service reliability of the parts.

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Abstract

This invention discloses a pulsed electromagnetic field-based method for controlling residual stress in the entire manufacturing process of titanium alloy components. Belonging to the technical field of residual stress control in titanium alloy parts, the method includes: dividing the entire manufacturing process of titanium alloy components into manufacturing stages; spatially partitioning the titanium alloy components and defining stress control priorities; constructing a residual stress evolution model coupling the manufacturing stages and spatial partitions; adaptively matching pulsed electromagnetic field control parameters based on the prediction results of the residual stress evolution simulation model; and then implementing pulsed electromagnetic field loading on each spatial partition and performing feedback correction of the pulsed electromagnetic field control parameters. This invention can achieve precise control of residual stress in different regions of complex components without changing the overall structure of the component, improving dimensional stability and service reliability. It is applicable to the manufacturing process of complex components such as aerospace structural parts, thin-walled parts, and high-precision molds.
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