A process compensation method for a 300mm-thick Q960E steel continuous casting dynamic soft reduction when the soft reduction is not in place
By adjusting the casting machine speed, solid fraction, and electromagnetic stirring parameters, the solidification end of Q960E steel was moved forward during continuous casting, solving the problem of billet center segregation caused by insufficient dynamic light pressure, and achieving low-magnification segregation control of billets and improvement of steel plate quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SD STEEL RIZHAO CO LTD
- Filing Date
- 2026-04-14
- Publication Date
- 2026-07-17
AI Technical Summary
In the continuous casting process of Q960E ultra-high strength steel, inadequate dynamic light pressure results in poor segregation at the center of the billet, affecting the quality of the cut end face of the steel plate. Existing technologies have failed to effectively solve this problem by adjusting process parameters.
By adjusting the casting machine speed, solid fraction range, and electromagnetic stirring parameters, the solidification end of the billet is moved forward, and the dynamic light reduction range covers the solidification end, ensuring that the reduction amount meets the set value. The process compensation method is used to stably control the billet quality without stopping casting or the machine.
It effectively solved the problem of center segregation of the billet caused by insufficient pressing, improved the low magnification segregation level of the billet to C1.0 and above, significantly improved the pass rate of magnetic particle inspection of steel plate end face to over 99%, and avoided the risk of cutting cracks and inspection failure.
Smart Images
Figure CN122400531A_ABST