前处理对微弧氧化铝镁合金尺寸的影响

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通过传统化学法和超声波清洗对高速动车电机C5M4铝镁合金端盖进行微弧氧化前处理,测量了端盖的尺寸变化,并研究了微弧氧化对端盖尺寸的影响。试验发现,微弧氧化后,端盖孔径变化在0.005~0.020mm之间,氧化膜厚度在0.005~0.014mm之间,说明微弧氧化对铝镁合金的尺寸影响不大。以传统的化学方法对端盖进行前处理,端盖孔径变化多在0.005~0.020mm内,部分在0.020~O.040mm之间,未能满足铝镁合金精密件对尺寸的要求。以超声波清洗技术对端盖进行前处理,端盖孔径变化则在0.005~0.01
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