A welding process for a double-layered profiled metal product

CN122353074APending Publication Date: 2026-07-10CHAOZHOU NESTE TECH CO LTD
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Patent Information

Application Number
CN202610742179.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-27
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In existing technologies, laser welding of double-layer irregular metal products has problems such as poor arc transition section formation, poor weld consistency, and stress concentration. In particular, the heat dissipation differences caused by curvature changes and the differences in multi-dimensional working conditions have not been effectively controlled.

Method used

The system employs laser full-circle welding combined with multi-parameter collaborative adaptive control of the arc transition section. Through real-time curvature detection and multi-parameter linkage, it achieves closed-loop control of weld formation detection and stress relief, including real-time detection of arc angle curvature, dynamic matching of laser parameters, shielding gas parameters, and molten pool compensation parameters.

Benefits of technology

It effectively solves defects such as over-melting, undercut, and lack of fusion in the arc transition section, improves welding quality and production efficiency, and adapts to the welding needs of complex structures.

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Abstract

This invention relates to the field of metal processing, and more particularly to a welding process for double-layer irregularly shaped metal products. It includes the following steps: S1: Stacking, positioning, and pre-fixing; S2: Laser full-circle welding and multi-parameter collaborative adaptive control; S3: Weld formation inspection and post-processing linkage; S4: Simultaneous forming and stress treatment: An arc-shaped abrasive blade is used to perform conformal rotational grinding on the arc-shaped transition section, while an ultrasonic probe is used to adhere to the laser weld seam via a flexible coupling device to simultaneously perform ultrasonic stress elimination, achieving integrated and simultaneous completion of weld formation and residual stress elimination; S5: Finished product inspection. Through laser full-circle welding, multi-parameter collaborative adaptive control of the arc-shaped transition section, and simultaneous completion of post-weld grinding and stress elimination, this welding process overcomes the inherent defects of existing technologies and improves welding quality and production efficiency.
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Citation Information

Patent Citations

  • A method for controlling weld formation based on spatial circular arc trajectory arc oscillation coupled with welding parameter tracking

    CN114101869B

  • A high-strength welding method for arc-shaped surface accessories

    CN118543936B