摘要
由于耐磨铸铁价格便宜，具有良好的耐磨性和减震性，因此用耐磨铸铁代替较贵的硅黄铜作为采金船下滚筒瓦衬材料，耐磨铸铁瓦衬能使用2～3个生产周期，每个生产周期可节省经营费5350．00元，提高了采金船的经济效益．
Wear resistant cast iron is used to replace the more expensive silzin as the lower cylinder bush of a dredger because of its low cost，good wear resistance and shock absorption. It can be used for 2 to 3 production perlds, save 5350 RMB Yuan operation cost for each period and arise the economic profit of the dredger,
关键词
采金船
下滚筒
瓦衬
耐磨铸铁
dredger,lower cylinder,bush,wear resistant cast iron
