一种磁场耦合振荡激光固氮增韧镍系低温钢焊缝的方法
By combining alternating magnetic fields with oscillating lasers, the welding of nickel-based ultra-low temperature steel under nitrogen protection was controlled, which solved the problem of insufficient nitrogen solid solution, achieved uniform and toughened weld structure, and improved ultra-low temperature toughness and welding efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUZHOU UNIV
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing filler wire-free oscillating laser coupled magnetic field composite welding technology has difficulty achieving in-situ solid solution of nitrogen in nickel-based cryogenic steel welding, resulting in a single martensite variant in the weld, a low proportion of large-angle grain boundaries, insufficient cryogenic toughness, and the process has strict requirements on joint precision, making it unable to adapt to assembly deviations.
Welding is performed under a nitrogen protective atmosphere by combining alternating magnetic field and oscillating laser. Through the coordinated control of dual energy fields, the solid solution and phase transformation of nitrogen are precisely controlled, promoting the formation of large-angle grain boundaries and achieving uniformity and toughness of the weld structure.
It effectively suppresses nitrogen escape, achieves uniform solid solution of nitrogen in the weld, increases the proportion of large-angle grain boundaries, improves the ultra-low temperature impact toughness and service stability of the weld, reduces costs and improves welding efficiency.
Smart Images
Figure CN122400801A_ABST