棒状燃料元件芯块与包壳紧密贴合的工艺方法
By using a spinning process with low current parameters and low feed speed, combined with forward and reverse motion parameters, a tight fit between the fuel element pellet and the cladding was achieved, solving the gap control and deformation problems in the existing technology, and improving manufacturing accuracy and thermal processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NUCLEAR POWER INSTITUTE OF CHINA
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, it is difficult to precisely control the gap between the fuel element pellet and the shell, which leads to deformation and coating thickness reduction during the tight bonding process, making it impossible to achieve a high-precision tight bonding between the pellet and the shell.
The spinning mechanism uses low current parameters and low feed speed to radially feed the spinning wheel assembly. Combined with forward and reverse motion parameters, the spinning mechanism achieves a tight fit between the core and the cladding. The feed amount is detected and adjusted by a diameter measuring mechanism to ensure the precision and stability of the spinning process.
It achieves precise gap control and tight fit between the fuel element pellet and the cladding, ensuring the manufacturing accuracy and thermal processing efficiency of the fuel element, preventing the cladding coating thickness from thinning, and improving the consistency and straightness of the outer diameter after spinning.
Smart Images
Figure CN121171677B_ABST