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成分/性能连续变化梯度材料激光成形送粉系统设计

Keywords: 功能梯度材料,送粉系统,激光成形制造

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Abstract:

针对成分及性能连续变化功能梯度材料(以及功能零件)激光成形制造工艺对多粉末束流成分及送粉量需实时变化的难点,研制开发粉末输送量连续可变的四路联动送粉系统;阐述了该系统的机械设计及电气控制原理;通过Fe313合金粉末输送工艺试验,实现送粉量的多斜率线性函数连续变化;使用Ni25自熔合金粉末,采用6kWCO2激光器,进行熔覆工艺试验,获得了厚度连续变化的单道熔覆层.

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