Seal the surface material: Structure pottery or exceeding two kinds alloy materials of hard surface.
密封面材料：结构陶瓷或超硬表面合金材料二种。
The effects of material composition, working surface treatment and microstructure on wear resistance of powder hot-forging flow oil-seal ring were studied.
研究了粉末热锻浮动油封密封环的材质、表面处理、显微组织对其耐磨性的影响。
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