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高温合金叶片类铸件电磁软接触成形过程研究
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TG249.9

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国家自然科学基金资助重大项目(59995440),国家重点基础研究发展规划资助项目(G2000067202-2)


Electromagnetic Soft contact Confinement and Directional Solidification of Near net Shape Blade Castings of Superalloys
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    摘要:

    传统高温合金叶片类铸件制备过程中,熔体长时间在陶瓷模壳材料中保温,易受其污染,而借助于交变电磁场与液态金属相互作用产生的电磁压力可使高温合金呈半悬浮状态,减少了熔体与磁模结晶器的接触面积和时间,能尽可能避免污染的产生。将该方法和定向凝固技术相结合,提出了1种实现高温合金复杂形状电磁软接触成形的定向凝固工艺,探讨了该工艺下不同结晶器材料、磁化套高度及其所加方位对线圈中磁感应强度的影响,并在实验室中成功制备出了2种近叶片形状的高温合金电磁软接触成形的定向凝固样件。

    Abstract:

    The superalloy melt is easily contaminated by the ceramic mold material because the melt is kept in it for long time for the traditional process. By the new electromagnetic soft contact confinement process, the superalloy melt is half suspended by electromagnetic pressure, so the contacting area and time between melt and magnetic mold decrease. Simultaneously, the contamination is decreased effectively. The new technique combines the electromangetic soft contact confinement with directional solidification process for manufacturing the near net shape turbine blade castings of superalloys. The effects of the magnetic mold material and the height and position of susceptor on the magnetic flux density distribution in the inductor were comprehensively investigated. In the experiment, two near net shape blade castings with directionally solidified microstucture are successfully obtained by the electromagnetic soft contact confinement process.

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李双明 张丰收 郝启堂 傅恒志 贾均 郭景杰.高温合金叶片类铸件电磁软接触成形过程研究[J].稀有金属材料与工程,2003,(6):443~446.[Li Shuangming, Zhang Fengshou, Hao Qitang, Fu Hengzhi, Jia Jun, Guo Jingjie. Electromagnetic Soft contact Confinement and Directional Solidification of Near net Shape Blade Castings of Superalloys[J]. Rare Metal Materials and Engineering,2003,(6):443~446.]
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  • 最后修改日期:2001-09-03
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