A hard anodic oxidation technique of forge aluminum alloy LD7 for piston was studied. The prescription and parameters of the technique were set up.
对铝合金LD 7硬质阳极氧化工艺进行了研究，提出了适合ld 7铝合金的工艺配方与工艺参数。
This text expatiated the craft parameters, technique main points and matters needing attention of anodic oxidation and dye black for aluminium and its alloy.
本文主要阐述了铝及铝合金阳极氧化与染黑色工艺参数、技术要点及注意事项。
Pulse current technique was adopted in hard anodic oxidation of aluminum alloys.
提出将脉冲技术应用于铝合金硬质阳极氧化。
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