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6250zc chai you ji qu zhou duan lie yuan yin fen xi
Author(s): 
Pages: 1-4
Year: Issue:  5
Journal: Wuhan Shipbuilding

Keyword:  疲劳断裂残余拉应力魏氏组织柴油机曲轴孔口油孔疲劳裂纹裂纹源销轴划痕;
Abstract: 本文对作为拖轮主机的6250ZC 柴油机曲轴断轴进行分析,指出曲轴为扭转疲劳断裂,引起疲劳断裂的原因为油孔部位存在脆弱的魏氏组织;油孔边缘因涂钼引起的残余拉应力以及油孔壁轴向的划痕。这三个原因常常是生产及检验中忽视和不易发现的,值得引起注意。
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