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Inconel铟镍合金是核电设备中燃料组件格架条带的常见原材料。为了提高核燃料组件格架条带产品的冲制质量,对铟镍合金板料冲压成形性能进行了研究。针对该材料价格昂贵和各向异性明显的特点,采用有限元方法进行分析。首先通过试验方法得到材料力学性能参数,再利用有限元模拟分析在变速变载条件下铟镍合金的成形性能。研究了冲压成形速度、速度模式、压边力大小和载荷模式对铟镍合金成形性能的影响。最后通过模具冲制试验结果分析验证了有限元模拟分析的正确性。结果表明:通过有限元数值模拟分析更加了解了铟镍合金板料冲制性能,并为格架条带冲制提供了工艺参数。
Inconel indium-nickel alloy is a common raw material for fuel assemblies in nuclear power equipment. In order to improve the punching quality of the stripe products of nuclear fuel assemblies, the stamping properties of indium-nickel alloy sheets were studied. Aiming at the characteristics of expensive material and obvious anisotropy, the finite element method is used to analyze the material. First, the mechanical properties of the material were obtained through the test method. The formability of indium-nickel alloy under variable speed loading conditions was analyzed by finite element simulation. The effects of forming speed, speed mode, blank holder force and load mode on the formability of indium-nickel alloy were studied. Finally, the correctness of the finite element analysis was verified by the analysis of die punching test results. The results show that the properties of indium - nickel alloy sheet are better understood by finite element numerical simulation and the technological parameters are provided for grid strip punching.