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CHEN Ling, LIANG Si-zu, LIU Zheng-yi. Fracture Analysis of Fit Screws of a Tractor[J]. Materials and Mechanical Engineering, 2006, 30(4): 86-88.
Citation: CHEN Ling, LIANG Si-zu, LIU Zheng-yi. Fracture Analysis of Fit Screws of a Tractor[J]. Materials and Mechanical Engineering, 2006, 30(4): 86-88.
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Fracture Analysis of Fit Screws of a Tractor

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  • Received Date: March 27, 2005
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    • Abstract
  • The failure of fit screws used in a tractor was analyzed.A comprehensive study on composition,microstructure,fracture surfaces and cracks indicated that surface of screws underwent decarbonization,which led fatigue damnification at the root of the spiral burr and resulted in cracking.It is suggested to strictly control the quality of heat treatment to avoid decarbonization or substitute the screws with bolts or to use bigger screws.
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    • References (5)
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    GB/T 3098.1-2000,紧固机件机械性能 螺栓,螺钉,螺柱[S].
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    周永欣,吕振林,张 敏,等.30CrMo钢泵体开裂失效分析[J].机械工程材料,2004,28(9):52-54.
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    机械工程手册电机工程手册编辑委员会.机械工程手册:机械零部件设计卷[M].北京:机械工业出版社,1996.
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