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大尺寸燃气轮机叶片蜡模注射成型与尺寸精度控制

ZHOU Le-yao,WANG Dong-hong, LIU Shu-mei,SHUAI San-san,ZHAO Dai-ying, SHU Da

Foundry（2023）

Cited 0|Views8
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Abstract
应用蜡模注射成型数值模拟方法,分析了单晶涡轮叶片蜡模充填过程、体积收缩率与翘曲变形和熔接痕;建立了注蜡工艺参数与翘曲变形的响应面模型,并使用多岛遗传算法获得全局最优的工艺参数.工艺参数对翘曲变形的影响最大的是保压压力,其次是注射温度和保压时间,叶片蜡模的最优注蜡工艺参数为保压压力13.66 bar,注射温度 69.96℃,保压时间155.73 s,经试验验证,叶片蜡模尺寸精度达到CT4级别.
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