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Dynamic Friction Wear of Mooring Chain in Marine Engineering

Yu Jibing(Naval Representatives Office of Jiujiang,Jiujiang 332000,Jiangxi,China)  
Impacting-sliding wear test facility is used to research wear characteristics of 22CrMnNiMo steel of mooring chain under impact load,wear pattern of material and surface of wear trace by means of SEM,EDS and electronic analytical balance.Wear-down decreases with the rise of impact load,but this does not last forever,and wear-down rises dramatically when it decrease to some extent.Plastic deformation of sample surface is development under impact-sliding effect,and materials are extruded through edge of wear trace.The loss of materials is produced by the repetitive process.The wear mechanism of 20CrMnNiMo steel under impact load is explained by delamination theory.
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