Concrete shape after a few days, the surface is a thin layer of massive fall off, tight get peeling bottom often have "rise sand" phenomenon.
混凝土成型几天后，表面薄薄的一层呈块状脱落，紧挨脱皮的底层通常还会有“起砂”的现象。
The said method can compound alloy layer with high quality and adjustable thickness on the surface of casting with different shape.
本方法可以在不同形状的铸件表面复合合金层，保证了铸件合金层质量，合金层的厚度可以调节，因而有很强的适应性。
Sacrificial layer process was proposed to protect the non-machined surface in this work and an experimental system was developed to shape overlay welded TC4 blades.
提出了牺牲层工艺保护非加工面，并建立实验系统，对堆焊修复后的TC4叶片进行电解修型。
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