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The electroforming of Ni-Mn alloy for the thin-wall revolving part was carried out with a device that could be used to electroform a revolving part. By way of using a conformal anode, the selection of the suitable conditions of electroforming, and adding of an additive to the electrolyte, the pores of the electroformed layers were fully eliminated, the deposition distribution of the layers was greatly improved, the rough phenomenon of the surface was controlled, and the internal stress in the layers was little.